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GE Hydran M2-X, Instruction Manual

The GE Hydran M2-X is a cutting-edge device that monitors transformer health. Ensure you get the best out of this product by downloading the free Instruction Manual from our website. This comprehensive manual provides valuable insights and troubleshooting tips to maximize your Hydran M2-X experience.

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Page 91 

Hydran* M2-X Instruction Manual 

 

 

MA-029 

Rev. 1.0,  

30-Jul-18

 

 

4.3.10.5

 

Analog Output Cable (If Used) 

Proceed as follows: 
1.

 

Run the cable through a conduit, from the Hydran M2-X to the SCADA system. 

2.

 

Verify all wires are identified at both ends. 

3.

 

Connect the wires to the corresponding I/O terminal block of the Hydran M2-
X.  For wiring details, see Section D-3. 

4.

 

Connect the other end of the cable to the SCADA system. 

4.3.10.6

 

AC Power Supply Cable 

 

Turn  off  the  electric  power  power  at  the  switch  or 
circuit  breaker  provided  for  disconnection  before 
making any electrical connections, and ensure a proper 
ground  connection  is  made  before  connecting  the 
power  supply.    Failure  to  do  so  can  result  in  property 
damage, personal injury and/or death. 

Note: The external ac power supply range is 110 Vac ± 15 % or 230 Vac ± 15 %, and 
from 47 to 63 Hz. 

Proceed as follows: 
1.

 

Run the cable through a conduit, from the Hydran M2-X to the power source. 

 

The  first  temporary  plug  (see  item  1  in  Figure  2-6  must  be 

removed  and  replaced  with  a  watertight  fitting  to  connect 
the ac power supply cable. 

2.

 

Remove the plastic cover from the ac power supply terminal block.  

3.

 

Connect the wires to the ac power supply terminal block of the Hydran M2-X.  
For wiring details, see Section D-7. 

4.

 

Connect the other end of the cable to the power source.  An external circuit 
breaker must be installed on the ac source and labeled accordingly, 
complying with the applicable regulations. 

Note:  Fuses or an external circuit breaker must be installed and duly identified near 
the Hydran M2-X, in accordance with the IEC* 947-1 and 947-3 standards, the local 
building codes or the current edition of the National Electrical Code. 

5.

 

Power up the Hydran M2-X. 

6.

 

Verify the display is lit. 

Note:  The earth/ground terminal (E/G) must be connected to the power source ground 
(green wire) or directly to the transformer tank.  For special considerations regarding 
grounding, see the note at the beginning of Section 4.3.8. 

 

Never perform high-voltage tests (mega-ohm measurements 

using a Megger instrument) on cables connected to a Hydran 
M2-X.    Never  apply  high  voltages  to  the  Hydran  M2-X 
terminals,  as  they  are  equipped  with  surge  protection 
devices that could be damaged by Megger tests.

 

WARNING 

CAUTION 

CAUTION 

Summary of Contents for Hydran M2-X

Page 1: ...s Lissue Industrial Estate East Lissue Walk Lisburn BT28 2LU United Kingdom Tel 44 0 28 9262 2915 Fax 44 0 28 9262 2202 Email ge4service ge com Web www gegridsolutions com md htm Hydran M2 X Transformer Gas Monitoring System Instruction Manual ...

Page 2: ...uction to the Hydran M2 X 22 2 1 Overview 22 2 1 1 Gas Detection 23 2 1 2 Moisture Detection 23 2 1 3 Optional I O Interfaces 24 2 1 4 Backward Compatibility with Hydran Products 24 2 1 5 Possible Configurations 25 2 1 6 Other Features 25 2 2 External Components 25 2 3 Electronic Card Cage 27 2 3 1 Front Keypad and Display 27 2 3 2 Right Side Terminal Blocks 28 2 3 3 Left Side Terminal Blocks 29 2...

Page 3: ...y Setup 44 3 2 7 Comm Setup 45 3 2 8 Readings Setup 47 3 2 9 I O Setup 48 3 3 Alarms Menu 50 3 3 1 Current Alarms 50 3 3 2 Alarms Setup 50 3 3 3 Alarm History 55 3 4 View Readings Menu 56 3 4 1 Actual Readings 56 3 4 2 View History Data 57 3 4 3 Date Time 59 3 5 Test Menu 59 3 5 1 Sensor Test 59 3 5 2 Relay Test 60 3 6 Service Menu 61 3 6 1 Sensors Parameters 61 3 6 2 Install New Sensor 63 3 6 3 S...

Page 4: ...Verifying the Standard TDM Signal If Used 71 4 2 8 Verifying the Analog Input s If Used 71 4 2 9 Verifying the Analog Output s If Used 71 4 2 10 Verifying the RS 232 Communications If Used 72 4 2 11 Conclusion 72 4 3 Installation 73 4 3 1 Overview 73 4 3 2 Verifying the Serial Numbers 77 4 3 3 Preparing the Valve 79 4 3 4 Separating the Sensor from the Hydran M2 X 79 4 3 5 Installing the Sensor on...

Page 5: ...on 96 4 5 Commissioning 97 5 Communications and Networking 98 5 1 Network Configuration Overview 98 5 1 1 Local Communications with a Laptop Computer 99 5 1 2 Remote Communications with a Host Computer via Modem 99 5 1 3 Remote Ethernet Communications With a Host Computer via Copper Wires or Fibre Optic 101 5 1 4 Hydran Host Communication Protocol 101 5 2 Installing a Network 102 5 2 1 Installing ...

Page 6: ...n 120 7 1 Operating Methods 120 7 1 1 Periodic Visual Monitoring 120 7 1 2 Alarm Monitoring 121 7 1 3 Analog Outputs Monitoring 121 7 1 4 Combined Alarm and Analog Outputs Monitoring 122 7 1 5 Local Monitoring With a Laptop Computer 122 7 1 6 Remote Monitoring With a Host Computer 123 7 2 Data Reading 123 7 2 1 Direct Data Reading 123 7 2 2 History Files Data Reading 124 8 Troubleshooting 125 8 1 ...

Page 7: ... 8 3 Hydran M2 X and Hydran 201Ci Controller s Analog Outputs at Zero 131 8 4 Alarms 132 8 4 1 Intermittent Gas Alarms 132 8 4 2 An Alarm Relay does not Reset even if the Alarm Condition has Disappeared 132 8 4 3 Irregular Gas Readings 132 8 4 4 Inaccurate Gas Readings 133 8 4 5 Moisture Reading of the Hydran M2 X does not correspond with that of a Validation Method 133 8 4 6 Moisture Readings Rem...

Page 8: ...dix C Functional Block Diagram 165 Appendix D External Connections 166 D 1 TDM and RS 485 Network Link Terminal Block 166 D 2 Analog Input Terminal Block 170 D 3 Analog Output Terminal Blocks 172 D 4 4 20 mA 174 D 5 Limitations 174 D 6 Converting Current to Voltage 175 D 7 AC Power Supply Terminal Block and External Ground Lug 175 D 8 Alarm Contacts Terminal Block 177 Appendix E Installing I O Mod...

Page 9: ...urposes only Reproduction in whole or in part to create working hardware or software for other than GE products is strictly prohibited except as permitted by written license agreement with GE Trademark Notices GE Hydran and are trademarks and service marks of General Electric Company Access Microsoft and Windows are trademarks or registered trademarks of Microsoft Corporation in the United States ...

Page 10: ... et ou au Hydran M2 X et pourrait entraîner des dommages à la propriété des blessures corporelles et ou la mort L installation et l entretien du Hydran M2 X doivent être effectués par du personnel qualifié seulement Veuillez aviser l opérateur du poste avant l entretien Travailler à l intérieur du Hydran M2 X peut déclencher des alarmes non voulues en raison de changements à des paramètres d arrêt...

Page 11: ...rameteränderungen Spannungsabschaltung Neubooten des Systems oder elektrostatischer Entladung unerwartete Alarme auslösen Für eine maximale Entfernung von 15 m von der Spannungsquelle verwenden Sie ein 2 08 mM2 X Kabel 14 AWG und ein Überstromschutz IT in Italian ATTENZIONE Tutte le procedure del presente manuale dovranno essere eseguite in totale conformità Qualsiasi deviazione dallo stesso manua...

Page 12: ...meterändringar för larm tack vare driver avstängning systemomstart eller elektrostatisk urladdning För ett maximalt avstånd på 15 m från kraftuttaget använd 2 08 mM2 X kabel 14 AWG och ett överströmsskydd Safety Symbols Description Description of safety symbols used on the Hydran M2 X device Refer to the Instruction Manual to prevent injury or damage to equipment Hazardous voltages may be present ...

Page 13: ... is already familiar with these subjects However forms of water in oil are summarized in Section 2 1 2 To simplify the text the following expressions are used Supervisory control and data acquisition SCADA is used to identify the numerous devices control panel alarm panel retransmission unit display terminal data recorder external detection device etc on which can be connected the Hydran M2 X Sens...

Page 14: ...s warranted for ninety 90 days from delivery GE represents and warrants that any software and firmware covered by this manual is free from functional deficiencies If any functional deficiencies are discovered and are reported to GE within the Warranty Period GE agrees to use due diligence to correct such deficiencies within 30 days after receipt of such notification Upon receiving such notice GE m...

Page 15: ...actors as applicable Repair or modification pursuant to GE s instructions or approval The Buyer shall keep proper records of operation and maintenance during the applicable Warranty Period These records shall be kept in the form of log sheets and copies shall be submitted to GE upon its request in connection with a warranty claim by the Buyer GE does not warrant any products or services of others ...

Page 16: ...aint or solvent voids the warranty 1 Do not remove the plastic cap from the sensor s threaded extremity until the sensor is installed on the valve see Figure 1 1 This cap protects the threads and the sensor from debris and sharp objects If the sensor is unmounted place immediately the cap onto its threads Figure 1 1 Plastic Cap Must Remain in Place Until the Sensor Is Installed on the Valve WARNIN...

Page 17: ...he warranty Figure 1 2 Do Not Touch the Sensor s Membrane with a Finger or an Object 3 Do not block the sensor s breathing hole or puncture the breathing hole s membrane see Figure 1 3 Located above the sensor s connector this opening provides oxygen to the gas detector inside the sensor Blocking this opening or puncturing its membrane damages the sensor permanently thus voiding the warranty Figur...

Page 18: ...ran M2 X s see Section 4 3 1 2 Figure 1 4 Do Not Install the Hydran M2 X at an Angle Vertically or Using an Elbow 5 Do not install the Hydran M2 X on elbows or fitting boxes see Figure 1 5 Elbows may cause turbulence that can affect the accuracy of gas level readings Figure 1 5 Do Not Install the Hydran M2 X on an Elbow or a Fitting Box 6 Do not install the Hydran M2 X on the inlet side of the rad...

Page 19: ...an M2 X on the Inlet Side of the Radiator Pump 7 Do not subject the Hydran M2 X or its sensor to high pressure water streams see Figure 1 7 High pressure streams used to clean transformers may cause serious damage Figure 1 7 Do Not Subject the Hydran M2 X or Its Sensor to High Pressure Water Streams ...

Page 20: ...ll the sensor Galvanized fittings pipes reducing bushing rings etc may react with the oil consequently resulting in higher readings of gas level Similarly do not use galvanized fittings on transformer valves used for oil sampling 11 Do not separate the Hydran M2 X s from their respective sensor The Hydran M2 X is set at the factory for a specific sensor To verify if the sensor and Hydran M2 X are ...

Page 21: ... 30 Jul 18 so can result in property damage personal injury and or death 12 The surface of the base plate can be hot Heating for the dynamic oil sampling system Section 2 5 is achieved using heating resistors mounted on the internal side of the base plate ...

Page 22: ...e and for the early detection of incipient faults in trans formers or any other oil filled electrical equipment The Hydran M2 X consists of a Type NEMA 4X enclosure Figure 2 1 easily installed on one of the valves of the equipment to be monitored Figure 2 1 Hydran M2 X s Enclosure The Hydran M2 X s user interface Figure 2 2 consists of an eight key membrane keypad and a 128 x 64 pixels backlit liq...

Page 23: ...vironment to perform the same tasks 2 1 1 Gas Detection The Hydran M2 X s sensor is equipped with a gas detector that is sensitive to the four gases that are the primary indicators of incipient faults in oil filled electrical equipment Hydrogen H2 Carbon monoxide CO Ethylene C2H4 Acetylene C2H2 Note The gas detector measures a composite value of the above dissolved gases in oil For information on ...

Page 24: ...n page 28 2 1 4 Backward Compatibility with Hydran Products General Electric s Hydran products line also includes the Hydran 201Ti Intelligent Transmitter H201Ti and the Hydran 201Ci Controllers a generic term that encompasses the three Hydran Controllers Hydran 201Ci C Communications Controller H201Ci C Hydran 201Ci 1 One Channel Controller H201Ci 1 Hydran 201Ci 4 Four Channel Controller H201Ci 4...

Page 25: ...mimonthly automatic sensor test and state report Dynamic oil sampling a pumpless sampling system using thermal convection cycles Terminal blocks to connect the following items ac power supply Five alarm contacts four are configurable and one is assigned to system fault alarm conditions TDM signal for backward compatibility with Hydran 201Ci controllers gas reading Optional I O interfaces Input and...

Page 26: ...ction and ensure accurate gas readings For details see Section 2 5 The surface of the base plate can be hot Heating for the dynamic oil sampling system see Section 2 5 is achieved using heating resistors mounted on the internal side of the base plate 5 Membrane vent Air penetrates through the watertight membrane vent and inside the Hydran M2 X The gas detector requires air to function properly 6 C...

Page 27: ...r has a window to see the display The display along with the keypad is located on the front of the electronic card cage To access the display and keypad the cover must be removed For more information on the display and keypad see Chapter 4 Figure 2 4 Interior of the Hydran M2 X 2 3 Electronic Card Cage The user interface display and keypad terminal blocks fuse holder and connectors are all mounted...

Page 28: ...used to connect the following signals from left to right for wiring details see Section D 1 Terminals 1 to 4 Standard TDM time division multiplexing signal This TDM signal is provided for backward compatibility with the Hydran 201Ti see the Hydran 201i System Instruction Manual This TDM signal transmits two pieces of information The percentage of gas level where 100 is 2 000 ppm for the standard m...

Page 29: ...lug must be removed and replaced with a watertight fitting to connect the ac power supply cable see Section 4 3 10 6 2 AC power supply terminal block The power supply is connected to the three terminals at the top of this terminal block The three terminals at the bottom are connected to the three wires of the line filter located inside the electronic card cage For wiring details see Section D 7 No...

Page 30: ...pecifications see Section 9 3 should you need to replace the battery see Appendix G 2 3 4 2 Internal Real Time Clock An internal real time clock RTC provides a calendar and a permanent clock unless the battery is disconnected The clock uses a crystal oscillator as its time base its 0 01 accuracy four minutes per month is independent of the ac power supply frequency The calendar accounts automatica...

Page 31: ...ran M2 X s nonvolatile memory is used to retain the following data Setup Temperature Setup Service Sensor Param View Readings View History View Sensor Card History 2 4 Hydran M2 X Sensor Never touch the gas detector or moisture sensor inside the Hydran M2 X sensor Touching them may damage the Hydran M2 X sensor and void the warranty 2 4 1 Overview The Hydran M2 X sensor is composed of a permeable ...

Page 32: ...e watertight membrane vent see item 5 in Figure 2 3 and inside the Hydran M2 X and the breathing hole allows the air to reach the gas detector inside the sensor The gas detector requires air to work properly 8 Twist and lock mechanism This twist and lock feature is no longer used to attach the Hydran M2 X enclosure and the sensor together This has been replaced by a clamp mechanism Refer to Figure...

Page 33: ...d when the sensor temperature is outside the operating limits For more information see Section 3 3 2 6 and Section 6 3 2 5 Heater Plate Dynamic Oil Sampling System The Dynamic Oil Sampling DOS system uses controlled heating and passive cooling to stimulate oil movement in front of the sensor to ensure a representative sample is supplied to the sensor at all times Heating is achieved using heating ...

Page 34: ...s of a 128 x 64 pixels backlit liquid crystal display LCD and an eight key membrane keypad The display requires no manual contrast adjustment and is equipped with temperature compensation The backlight display allows easy reading of the display at night When the Hydran M2 X is closed the display remains visible through a window in the cover The figure below shows a typical screen Figure 3 2 Typica...

Page 35: ...ific function is always assigned to the same context key The Table below shows examples of common context keys in the Main Display mode see Section 3 1 2 3 Key Name Key Location Function Main Menu Middle Return to the top level of the Main Menu Enter Right Enter a submenu Change Right Change the value of a parameter Ackn Right Acknowledge an alarm Cancel Left Return to the previous value Accept Ri...

Page 36: ...rs and commands Third priority Main Display mode see Section 3 1 2 3 In this mode the Hydran M2 X displays up to four screens of messages Gas readings and trends Moisture readings and averages Readings of the optional analog inputs present only if one or more analog inputs are installed List of active alarms Note The Hydran M2 X automatically returns to the Main Display mode if the keypad is not u...

Page 37: ...see Section 3 1 2 3 When an alarm condition disappears the corresponding message is removed from the Main Display mode screen 3 1 2 2 Menu Navigation Mode In the Menu Navigation mode the keypad is used to access the Main Menu s options parameters and commands The Main Menu gives access to all Hydran M2 X s parameters and commands To access the Main Menu from the Main Display mode press the Main Me...

Page 38: ...lated information for more information see Section 3 2 8 2 RH Level The relative humidity in percentage Average The relative humidity average in percentage PPM H2O Level The moisture level in ppm Average The average moisture level in ppm Sensor Temp The temperature of the sensor in C Figure 3 5 Screen 2 of Main Display Mode Moisture Readings Screen Screen 3 see following page displays the readings...

Page 39: ...tion is still present Figure 3 7 Screen4 of Main Display Mode Active Alarms Screen 3 1 3 Changing the Value of a Parameter Proceed as follows to change the value of a parameter 1 Navigate to the desired parameter and press the Change context key There are two possibilities For numeric parameters a screen similar to the one shown in Figure 3 8 is displayed This screen indicates the following inform...

Page 40: ...roll in ascending or descending order through the list of available characters See Table 3 1 Press the Delete context key to eliminate this digit from the value Note Press and hold the Up or Down arrow keys for more than one second to accelerate the rate of increase or decrease 4 Repeat the last step for each digit or character you wish to change To add digits or characters press the Right key pas...

Page 41: ...Change is not displayed this item cannot be changed 3 1 4 Scrolling Indicators The Hydran M2 X s display can show up to seven lines of text at a time if a screen contains more lines scrolling indicators are displayed in the bottom right corner Indicates there is at least one item below the displayed items Press the Down arrow until these items are displayed Indicates there is at least one item abo...

Page 42: ...sswords should be disclosed to authorized personnel only particularly password No 2 The passwords are common to all Hydran M2 X s and cannot be changed When the Hydran M2 X requests a password one of the two following messages is displayed Password 1 1247 Password 2 1247 Use the Up or Down keys to increment or decrement the displayed value and press the Enter context key to accept the value The us...

Page 43: ...tain to the operation of the Hydran M2 X s heater plate and dynamic oil sampling system Temp Set Point Set point of the sensor temperature average target temperature of the heater plate The default value is 35 C Temp SP Modulation Temperature variation around the Temp Set Point For example if Temp Set Point is set to the recommended temperature of 35 C 95 F and Temp SP Modulation to 10 C 18 F the ...

Page 44: ...logging rate of 60 minutes provides a capacity of 198 days A logging rate of 360 minutes 6 hours provides a capacity of 1 190 days 40 months Long Term 1 2 3 and 4 One to four Long Term recordings can be set during one day To disable a parameter set it to 00 00 Long Term 1 cannot be turned off Long Term 2 3 and 4 however can each be turned off The logging times must be set in chronological order Lo...

Page 45: ...software The Comm Setup function is used to Set the network and Hydran M2 X s identification number Set the communication baud rate and other communication parameters 3 2 7 1 Identification Power Station ID Power station s identification number ranging from 1 to 9999 All Hydran M2 X s belonging to a local network must share the same power station identification number This number is used when acce...

Page 46: ...in a local network must be set to an identification number between 1 and 5 inclusively Table 3 3 Setting Example for Identification Numbers Both identification numbers must be identical to those assigned to the same Hydran M2 X s and power station in the Perception software Note The identification numbers of each Hydran M2 X must be kept on record for reference The identification number of at leas...

Page 47: ... M2 X s in the RS 485 local network If Disabled the laptop computer can only communicate with the Hydran M2 X to which it is connected Modem Dial String When an alarm condition is detected and the Call on Alarm mode is selected the Hydran M2 X will send the Modem Dial String to the modem The default string sent is ATDS0 For information on how to change an alphanumeric parameter see Section 3 1 3 T...

Page 48: ...o set the frequency at which the signal is sampled The readings are updated immediately after each sample An Input Calibration To calibrate the analog input signal Configuration Identification Input Name This name is used to indicate the actual reading see above Input Short Name This name is used as the first part of an option name in Alarms Alarms Setup in Setup Alarms Setup and in Setup I O Setu...

Page 49: ...output see Section 2 3 2 and Section K 1 Analog Mode To set the operation mode of the analog output The three Force x modes are used only to test the operation of the Hydran M2 X Table 3 4 shows the electrical current generated for each mode Type of Output Operation Mode Force 0 Force 50 Force 100 4 20 mA 4 00 0 10 mA 12 00 0 20 mA 20 00 0 40 mA Table 3 4 Electrical Current Generated by the Analog...

Page 50: ...ch displayed screen corresponds to one alarm condition If two or more alarm conditions are present the Hydran M2 X scrolls through the screens each one being displayed for five seconds A screen example is shown below Figure 3 11 Example of Current Alarms Each screen contains the following information The name of the parameter responsible for the alarm Alarm Status The status of this alarm which ca...

Page 51: ...e of the hourly trend period see parameter Hourly Tr Period in Setup Reading Setup Gas Reading Setup in Section 3 2 8 1 Alarm Hi Relay Relay activated when a gas hourly trend High alarm condition is detected Alarm Hi Hi Relay Relay activated when a gas hourly trend High High alarm condition is detected Hydran Daily Trend Alarm Gives access to the daily trend High and High High alarm parameters Ala...

Page 52: ...condition is detected RH Hourly Average Alarm Gives access to the relative humidity average High and High High alarm parameters Alarm Hi SP Set point of the relative humidity average High alarm condition Alarm Hi Hi SP Set point of the relative humidity average High High alarm condition Alarm Delay Alarm delay for both set points T his delay is calculated using parameter RH Average in Setup Readin...

Page 53: ...elay activated when a sensor temperature High High alarm condition is detected Base Plate Temp Alarm Gives access to the base plate temperature Low Low Low High and High High alarm parameters Alarm Low Low SP Set point of the base plate temperature Low Low alarm condition Alarm Low SP Set point of the base plate temperature Low alarm condition Alarm Hi SP Set point of the base plate temperature Hi...

Page 54: ...m condition is detected Note Do not adjust without consulting the General Electric Customer Service the coordinates can be found at the bottom of page 9 A battery alarm is triggered if the voltage of the battery is below the Low or Low Low set point for a period of time longer than the delay For details see Section 6 3 2 3 Note Appendix I presents the list of all alarm messages that can appear in ...

Page 55: ...f the High High alarm condition Alarm Delay Alarm delay for all set points Alarm L L Relay Relay activated when a Low Low alarm condition is detected Alarm Low Relay Relay activated when a Low alarm condition is detected Alarm Hi Relay Relay activated when a High alarm condition is detected Alarm Hi Hi Relay Relay activated when a High High alarm condition is detected 3 3 2 6 System Fault Trigger ...

Page 56: ...end in ppm x hours Parameter Hourly Tr Period in Setup Readings Setup Gas Reading Setup specifies the period used to calculate this trend see Section 3 2 8 1 Gas Daily Tr Actual gas daily trend in ppm x days Parameter Daily Tr Period in Setup Readings Setup Gas Reading Setup specifies the period used to calculate this trend see Section 3 2 8 1 Sensor Temp Actual temperature of the sensor in C Gas ...

Page 57: ...me of the semimonthly automatic sensor test The maintenance procedure in Section 9 shows how the data of the history files can be used 3 4 2 1 Short Term History The Short Term History function gives access to the Short Term history file From 1 to 360 minutes adjustable see parameter Short Term Rate in Setup History Setup History Log Rate see Section 3 2 6 1 the date and time plus several values a...

Page 58: ...e oldest one in a first in first out method Navigation in this file is performed as in the Short Term history file The values recorded in the Long Term history file are also identical See Section 3 4 2 1 3 4 2 3 Event History The Event History function gives access to the Events history file When an event occurs the date and time of occurrence an event message and several values are stored in this...

Page 59: ...lues recorded in the Service history file are the same as the ones recorded in the Short Term file See Section 3 4 2 1 3 4 2 5 Alarm History Navigation in this file is performed as in the Short Term history file The values recorded in the Service history file are the same as the ones recorded in the Short Term file See Section 3 4 2 1 3 4 3 Date Time This function is identical to the one in Setup ...

Page 60: ...Replace Sensor Alarm Sensor Test results outside optimal operating range Sensor must be replaced Cable Open Cable disconnected misconnected or defective Cable Short Sensor Cable misconnected or short circuited Sensor Not Installed Unable to perform the test Install Sensor Table 3 5 Messages that can be Displayed Following a Sensor Test Note The Hydran M2 X is equipped with a provisional alarm call...

Page 61: ...ulation also requires these ten parameters from B to A6 These ten parameters characterize the behavior of the gas sensor by modeling its response according to the temperature The values of these ten parameters are stored in the Hydran M2 X s nonvolatile memory see Section 2 3 4 3 Gas Param CkSum Checksum of the above values This value is added to the list to avoid erroneous values from being enter...

Page 62: ...rs from C1 to C10 These ten parameters characterize the behavior of the moisture sensor by modeling its response according to the temperature The values of these ten parameters are stored in the Hydran M2 X s nonvolatile memory see Section 2 3 4 3 H2O Param CkSum Checksum of the above values This value is added to the list to avoid erroneous values from being entered Note The Hydran M2 X uses the ...

Page 63: ...3 6 1 2 except that New H2O Sensor allows to change the values of the moisture sensor parameters Enter the new value of each parameter and press the Change context key The sensor is then immediately tested and the result Good or else is displayed after a few seconds For details see Section 3 5 1 Do not change these values unless you are installing a new sensor 3 6 3 Sensor Test The H2 Sensor Test ...

Page 64: ... as IO 1 IO 3 Same as IO 1 IO 4 Same as IO 1 Sensor Card 1 Currently this port is used by the H2 H2O B P Temp card which is an interface for the gas sensor moisture sensor and heater plate temperature signals Sensor Card 2 There is currently no such card Sensor Card 3 There is currently no such card 3 6 5 2 Detected Config This function is identical to Current Config See Section 3 6 5 1 3 6 6 Serv...

Page 65: ...oftware Sensor Card 1 Version number of the sensor card 1 software Sensor Card 2 Version number of the sensor card 2 software Sensor Card 3 Version number of the sensor card 3 software 3 6 8 Sensor Card Status The Sens Card Status function indicates which sensor card is detected by the Hydran M2 X A card can be Ok present or Not Present ...

Page 66: ...ote Keep the packing material for storage or further shipment of the Hydran M2 X 4 1 2 Shipping List This Section lists all items included in the shipment of a Hydran M2 X If any item is missing contact the General Electric Customer Service the coordinates can be found at the bottom of page 9 1 One pre assembled Hydran M2 X including Cover Sensor with protective plastic cap Electronic card cage wi...

Page 67: ... card cage for any visual damage bump scratch or others 5 Ensure the serial numbers of the following Hydran M2 X s components correspond to those indicated on the Test Certificate and Data Sheet for an example see Figure 3 12 and the shipping box Serial number of the sensor located under the sensor s connector see item 5 in Figure 2 7 Serial number of the Hydran M2 X located on the heater plate No...

Page 68: ...rior to Installation It is strongly recommended to verify the operation of all Hydran M2 X s before installation in the field for the installation procedure see Section 4 3 Verification confirms that no damage occurred during shipping and allows the user to become familiar with the Hydran M2 X Note It is highly recommended that the parameters of each Hydran M2 X identification number power station...

Page 69: ...on Press the Main Menu context key The Main Menu should be displayed Click the Down arrow key two times to highlight Setup and press the Enter context key Try each arrow key and verify if the cursor moves in the corresponding direction 10 Make a shadow over the Hydran M2 X s display and verify the backlighting is functioning The display should be readable under all ambient lighting conditions 4 2 ...

Page 70: ...To identify each terminal see Section D 8 1 Access Test Relay Test 2 Simulate an alarm by setting parameter Relay 1 Mode to Force On Make sure The NO contact of this relay is closed The NC contact of this relay is open The state of the other alarm contacts has not changed 3 Perform the same test for relays 2 3 and 4 4 Simulate an alarm due to system fault conditions by setting parameter SysOK Rela...

Page 71: ...An Input Setup and select the analog input interface to verify In the screen that is now displayed proceed as follows Set the calibrator to 4 mA IO State should display 0 0 0 1 The line below IO State should display the minimum reading value defined during the configuration Set the calibrator to 20 mA IO State should display 100 0 0 1 The line below IO State should display the maximum reading valu...

Page 72: ...e 4 20 mA supply voltage 6 Disconnect the digital multimeter Note If the output current does not correspond to one of the three above values calibrate this analog output 4 2 10 Verifying the RS 232 Communications If Used This verification procedure requires Perception software 1 With the supplied RS 232 cable connect the Hydran M2 X to a laptop computer through their DB 9 connector 2 Access Setup ...

Page 73: ...ch step Appendix B provides a checklist for the entire installation procedure It is strongly recommended to verify the operation of all Hydran M2 X s before installation in the field The verification also allows the user to become familiar with the Hydran M2 X see Section 4 2 Note It is strongly recommended that the parameters of each Hydran M2 X identification number power station identification ...

Page 74: ...estriction between the Hydran and the main body of oil there is a good circulation of oil flowing towards the Hydran Figure 4 1 illustrates some typical valve locations that can be found on a transformer These locations vary between transformers but there are some valve locations on a transformer where the oil circulation is much better due to the nature of a transformer s operation The circulatio...

Page 75: ...er impede the oil flow Note A minimum distance of 12 in between the ground and the valve is required so that the Hydran enclosure and cables can be properly installed Location C Main Tank Some transformers are equipped with a valve that is mounted towards the middle portion of the transformer main tank This location offers good oil circulation and is easily accessible for installation and taking o...

Page 76: ...re in diameter The total distance between the Hydran M2 X and the mounting point of the valve must not exceed six times the nominal diameter of the valve 230 mm 9 in for a 38 mm 1 5 in valve see Figure A 7 6 Ensure there is enough clearance above and below the Hydran M2 X to separate it from its sensor For more information see Section A 2 1 7 The Hydran M2 X must always be easily accessible 8 The ...

Page 77: ... 381 mm adjustable wrench with smooth non marring 3 5 8 in approximately 92 mm jaws An adjustable wrench can also be used Never use a wrench with jagged jaws The following material is also required 1 2 in approximately 12 7 mm NPT cable fittings PG 13 or M2 X0 with locknuts and sealing gaskets Cable ties Conduits Cables for details see Appendix D at page 166 Note One cable fitting conduit and cabl...

Page 78: ...in and 5 32 in standard Hex Allen L Keys Spanner wrench Roll of PTFE tape TO BE SUPPLIED BY THE INSTALLER 3 mm 1 8 in Slotted Screwdriver 2 Phillips Screwdriver Adjustable Pliers or Wrench Wire Stripper Wire Cutter Bucket and Rags Adjustable Wrench with smooth non marking jaws Figure 4 2 Tools Required for the Installation ...

Page 79: ...hat secures the Hydran M2 X and its sensor together Figure 4 3 Separating the Sensor from the Hydran M2 X 2 Remove the sensor clamp using the spanner wrench 3 Carefully pull the sensor a few centimeters from the enclosure A cable connects the sensor to the electronic card cage 4 Disconnect the connector located at the back of the sensor see Figure 4 3 5 Rotate the connector anticlockwise approxima...

Page 80: ...dran M2 X Figure 4 4 Disconnecting the Sensor Cable 6 Inspect the membrane inside the sensor by looking at it its surface must be flat without cut or tear a small curl is normal 7 Store all parts including the sensor in a box and in a safe place until ready for installation CAUTION 1 Rotate sensor connector anti clockwise approximately 1 8 turn 2 Pull connector from sensor ...

Page 81: ... with solvent 2 Wrap PTFE tape on the adaptor s threads Use only PTFE tape to seal the adapter s threads Wrap at least four to five layers of tape around the threads 3 Screw the adaptor onto the valve and tighten it using an adjustable wrench Never use a wrench with jagged jaws 4 Wrap PTFE tape on the sensor s threads See Figure 4 5 Use only PTFE tape to seal the sensor s threads Wrap at least fou...

Page 82: ...ve 8 Tighten the sensor using an adjustable wrench Do not use excessive force when tightening the sensor onto the valve Note If the sensor is installed horizontally ensure the bleed screw is on top at the 12 o clock position See Figure 4 7 on the next page 9 Ensure the O ring is in place on the sensor flange 1 Install clamp around sensor 2 Install sensor on valve 3 Tighten using adjustable wrench ...

Page 83: ...key fully close the sensor s bleed screw and then open it 1 8 of a turn 2 Slowly open partially the transformer valve until oil leaks out of the sensor s sampling port 3 Wait until there are no more air bubbles present in the oil and shut the bleed screw tightly 4 Open the valve completely 5 Wipe all traces of oil from the sensor Do not use any solvent 6 Inspect the sensor for oil leaks 7 Tighten ...

Page 84: ...ccumulated inside the transformer valve 4 3 7 Installing the Hydran M2 X on the Sensor Proceed as follows see Figure 4 9 on the next page 1 Push the sensor cable connector into the sensor connector 2 Rotate the connector clockwise approximately 1 8 of a turn 3 Position the enclosure and push the Hydran M2 X onto the sensor 1 Loosen bleed screw 2 Slowly open valve 3 Purge air from sensor collect oi...

Page 85: ...Page 85 Hydran M2 X Instruction Manual MA 029 Rev 1 0 30 Jul 18 Ensure the sensor cable is not squeezed between the sensor and the enclosure Squeezing the cable may damage it CAUTION ...

Page 86: ...the transformer ground grid Improper grounding could cause erratic operation and damage the electronic circuit Note If for operating consideration a non grounded installation is required contact the General Electric Customer Service the coordinates can be found at the bottom of page 9 1 Insert the sensor cable connector into the sensor connector 2 Rotate connector clockwise approximately 1 8 turn ...

Page 87: ...against magnetic fields Flexible rather than rigid conduits should be used near the Hydran M2 X to ease installation and servicing Proceed as follows 1 Remove the cover s four retaining screws using the supplied Allen key See Figure 4 11 on the next page 2 Pull the cover 3 Remove the cap from the desired conduit fittings Install the necessary watertight conduit fittings See Figure 4 12 All conduit...

Page 88: ...ure 2 6 Hydran M2 X s left side when facing the display ac power supply cable Alarm contacts cable connected to a SCADA system Hydran M2 X s right side Input cable of the RS 485 link connected to another Hydran M2 X Output cable of the RS 485 link connected to another Hydran M2 X or to a Hydran 2901Ci C controller Up to four optional cables for I O analog inputs and or outputs 5 Ground the conduit...

Page 89: ...trands in the terminal strands that touch two terminals will cause problems Strip each wire to a maximum of 8 mm before installing it Do not leave trims of metallic strands inside the Hydran M2 X s enclosure The first temporary plug see item 1 in Figure 2 6 must be removed and replaced with a watertight fitting to connect the ac power supply cable Section 4 3 10 6 1 Mount the required watertight c...

Page 90: ... Note The TDM is used with the Hydran 201Ci 1 or Hydran 201Ci 4 Controller to display remotely the gas level and the status of alarm relays 1 and 2 There is no display of the water level or the status of alarm relays 3 and 4 Proceed as follows 1 Run the TDM cable shielded triad through a conduit from the Hydran M2 X to the Hydran 201Ci 1 or Hydran 201Ci 4 Controller 2 Verify all wires are identifi...

Page 91: ...tight fitting to connect the ac power supply cable 2 Remove the plastic cover from the ac power supply terminal block 3 Connect the wires to the ac power supply terminal block of the Hydran M2 X For wiring details see Section D 7 4 Connect the other end of the cable to the power source An external circuit breaker must be installed on the ac source and labeled accordingly complying with the applica...

Page 92: ...re running on the host or laptop computer It is recommended to use the Perception software because it makes the configuration task much easier See the Perception Software Manual The parameter configuration detailed in the following pages is written for those who are using the Hydran M2 X s display and keypad To set up the communication channel prior to the use of the Perception software see Sectio...

Page 93: ... 3 2 2 Verify and set as required all parameters 4 Access Alarms Alarms Setup Temp Alarm Setup see Section 3 3 2 3 Verify and set as required all parameters 5 Access Alarms Alarms Setup Battery Alarm Setup see Section 3 3 2 4 Verify and set as required all parameters 6 Access Alarms Alarms Setup Analog Input Alarm Setup see Section 3 3 2 5 Verify and set as required all parameters 7 Access Alarms ...

Page 94: ...rameter screen is now displayed 4 Make sure Input Range is set to 4 20 mA Note Analog input interfaces are calibrated at the factory for a 0 20 mA range However when parameter Input Range is set to 4 20 mA the interface automatically adapts to this range 5 In the parameter screen scroll down the list of parameters and select option Configuration The Configuration screen is now displayed 6 Select I...

Page 95: ...3 1 Access Test Relay Test see Section 3 5 2 2 Verify and set as required the operation mode of each relay 3 Verify the relay status is properly monitored by the SCADA or annunciator system 4 4 11 Verifying the Sensor Parameters 1 Access Service Sensor Param Gas Sensor Param see Section 3 6 1 1 2 Make sure the displayed serial number the ten parameters B M N S and A1 to A6 and the checksum all cor...

Page 96: ...ran PPM Period B to 24 hours For details on trend computations and reset see Section 6 2 5 4 4 4 14 Conclusion If the configuration has been performed locally at the Hydran M2 X using Perception software 1 Access Setup Comm Setup see Section 3 2 7 2 2 Disconnect the RS 232 link from the Hydran M2 X s DB 9 connector 3 Put the Hydran M2 X s cover back in place see Figure 4 13 on the page below Ensur...

Page 97: ...he network A general description of the installation transformer number power station number etc The installation of the Hydran M2 X is now completed If properly installed and maintained the Hydran M2 X provides many years of trouble free service Note Proper adjustment of trend alarm requires an observation period of trend behavior to determine the optimal setting See Section 6 2 5 4 CAUTION Gaske...

Page 98: ...Xs LED transmitters for fiber optic are classified as IEC 60825 1 Accessible Emission Limit AEL Class 1 Class 1 devices are considered eye safe to the unaided eye Do not view directly with optical instruments In a network the Perception software can communicate with each Hydran M2 X individually because each one is identified by a unique identification number Monitor ID parameter set by the user s...

Page 99: ...e used for permanent connection to a computer Note The maximum distance for an RS 232 local link is 7 5 m 25 ft Figure 5 2 Local Communications with a Laptop Computer 5 1 2 Remote Communications with a Host Computer via Modem For remote communications a single Hydran M2 X or a network of Hydran M2 X s can be linked through a modem to the host computer running the Perception software To do this the...

Page 100: ... to one of the following modes Call on Alarm and Answer Only For more information see parameter Comm Mode in Setup Comm Setup see Section 3 2 7 2 5 1 2 2 Sequence of Events in the Call on Alarm Mode The sequence of events in the Call on Alarm mode is as follows 1 An alarm condition is detected 2 The Hydran M2 X sends to the Hayes compatible modem the command indicated in the Setup Comm Setup Modem...

Page 101: ...net communications a single Hydran M2 X or a network of Hydran M2 X s can be linked directly to the host computer see Figure 5 4 below running the Perception software To do this one Hydran M2 X in the daisy chain must be linked to the host computer using an Ethernet cable to the Ethernet port or a fiber optic cable to the fiber optic port In the case of fiber optic the Rx and Tx connections on the...

Page 102: ...aisy chain Note For notes and procedures regarding conduits see Section 4 3 9 The total maximum length for all RS 485 cables in a network is 1 200 m 4 000 ft 2 Ground each conduit at the extremity at which the RS 485 cable is connected to the RS 485 In terminals See the Figure below A conduit is grounded by connecting it to terminal 12 of the RS 485 terminal block Figure 5 5 Grounding the RS 485 C...

Page 103: ... X in the network 1 Power up the Hydran M2 X 2 Ensure it is operational no alarm condition detected 3 Access Setup Comm Setup Identification see Section 3 2 7 1 4 Set as required both identification numbers Power Station ID and Monitor ID 5 Press Esc and access the communication baud rate and the other communication parameters see Section 3 2 7 2 Set as required the following communication paramet...

Page 104: ...at the Hydran M2 X is connected to the appropriate serial port on the laptop computer and that it has the proper ID and baud rate Confirm good communications in the Relays Analog window of the Perception software change the Relay Mode of each relay from Force Off to Force On and back this should toggle the state of the Hydran M2 X s alarm relays 2 After the test in the Hydran M2 X Host software se...

Page 105: ...g A supervisory link cable connected to a Hydran 201Ci 1 or Hydran 201Ci 4 Controller requires a cable with three twisted pairs and overall shield A supervisory link cable connected to a Hydran 201Ci C Controller requires a cable with two twisted pairs and overall shield 1 Run the supervisory link cable through a conduit from the first or last Hydran M2 X in the daisy chain to the Hydran 201Ci Con...

Page 106: ...should always be used in conjunction with other available information to decide if the monitored equipment should be removed from service This Chapter contains examples of how to set the gas alarm parameters of the Hydran M2 X The values used are fictitious and do not correspond to any standard General Electric Canada does not suggest nor recommend specific alarm set points for gases or moisture I...

Page 107: ...High Gas hourly trend Gas daily trend Moisture level High High High Moisture average Relative humidity Relative humidity average Analog inputa Low Low Low High High High Sensor temperaturea Low Low Low High High High Base plate temperaturea Low Low Low High High High Battery voltage Low Low Low Sensor and connections Cableb short Replace sensor now Cableb open Table 6 1 Alarm Conditions Monitored ...

Page 108: ...n M2 X drops to zero and the NO fail alarm contact opens 5 A message is recorded in the Events history file Alarm messages are thus stored in memory The Events file can contain up to 500 messages Each message comes with a set of relevant parameters gas and moisture levels trends etc and is identified with the recording date and time For details see Section 3 4 2 6 2 Gas and Moisture Alarm Conditio...

Page 109: ...s calculated based on the relative humidity RH and the temperature see Section K 2 Moisture H2O ppm hourly average This value is calculated based on the moisture level readings obtained during a period of time ranging from 1 to 170 hours The average moisture level is updated every five seconds 6 2 2 High and High High Conditions The High and High High alarm conditions are defined as follows High a...

Page 110: ...tion see Section 6 5 6 2 4 Setting the High Alarm Condition Before setting the gas or moisture level High alarm condition the gas and moisture level readings should be monitored over a minimum period of two weeks A simple method to monitor this value is to consult the Hydran M2 X s history files using its keypad see Section 3 4 2 Follow these rules Adjust the High set point above the highest readi...

Page 111: ...and if the gas level reading starts increasing at the rate of 50 ppm per month twice the concern rate it will take two months before the gas level High alarm condition is detected and the investigation of the possible causes of the increase begins If the daily trend High alarm condition is used and its alarm set point adjusted to 25 ppm its period to 30 days and its alarm delay to 33 of the period...

Page 112: ...riod If the user changes the hourly or daily trend period the corresponding trend reading is reset to 0 0 ppm period 6 2 5 3 Guidelines for the Periods of Gas Trends Here are a few guidelines on how to set the hourly and daily trend periods The hourly trend period should be long enough to filter out reading fluctuations caused by short term changes in ambient conditions and transformer operation T...

Page 113: ...tory and the user s field experience are the most important criteria for alarm condition settings If existing records of previous dissolved gas analysis DGA for the equipment monitored should be used to help determine alarm condition settings in general and especially for the daily trend 4 Trend alarm delays should be set according to each trend period see guidelines in Section 3 2 8 1 For example...

Page 114: ...e The alarm set point adjustment has priority over the relay triggering In other words the state of the relay is not changed if the alarm set point is adjusted to Off Some of the system fault conditions have High and High High alarm set points and an alarm delay These conditions are therefore detected the same way as the gas or moisture High and High High alarms the alarm due to system fault condi...

Page 115: ...parameters pertaining to these alarm conditions are presented in Table 6 6 6 6 below The heater plate temperature is measured using two thermistors in the heater plate Descriptiona Priority Alarm Set Pointc Fault Triggerd Low Low base plate temperature High Alarm Lo Lo SP B P Temp L Low Alr Low base plate temperature Alarm Low SP B P Temp Low Alarm High base plate temperatureb Alarm Hi SP B P Temp...

Page 116: ...ed in the Service history file The test can also be forced manually in Test Sensor Test H2 Sensor Test see Section 3 5 1 but this result is not recorded The parameters pertaining to the sensor operation and connections alarm conditions are presented in Table 6 8 below Descriptiona Priority Alarm Set Pointc Fault Triggerd Replace Sensor Alarm Very high None Hyd Rep Sen Alr Cableb short Hyd C Short ...

Page 117: ...ons as follows Relay 1 to gas High alarm conditions Relay 2 to gas High High alarm conditions Relay 3 to moisture High alarm conditions Relay 4 to moisture High High alarm conditions Relay 5 to system fault conditions this relay cannot be reassigned Note Several conditions can be assigned to one alarm relay 6 5 1 Alarm Contacts Each relay has A normally open NO contact A normally closed NC contact...

Page 118: ...t Table 6 10 Possible States of All Relays a On normal no alarm Off alarm The state of each relay can be determined as follows By displaying each relay state on the Hydran M2 X s display By verifying the state of the alarm contacts on the corresponding terminal block 6 5 3 Operation Modes of the Alarm Relays The mode of each alarm relay is set using the corresponding Relay x Mode parameter in Setu...

Page 119: ...delay and if the alarm has been acknowledged by the user using the Hydran M2 X s keypad or using Perception software 6 5 3 3 Normal and Latch Modes In the Normal and Latch modes Alarm relays 1 to 4 are energized when an alarm condition is detected The system fault relay 5 however is de energized when an alarm condition is detected The system fault relay is thus energized NO contacts closed and NC ...

Page 120: ...ollowing routine must be an integral part of the on site station inspection Periodic visual reading once or twice a day of the gas and moisture level on the display of the Hydran M2 Xs On site verification of alarms messages on the display of the Hydran M2 X s For details on the alarms see Section 3 1 2 1 and Section 3 2 1 Manual logging of above results Only basic training to the station s person...

Page 121: ...everity of this alarm A site inspection is required to perform the alarm evaluation 7 1 3 Analog Outputs Monitoring The analog outputs monitoring gas and moisture level monitoring via the analog output solves the disadvantages of the alarm monitoring method as follows Connecting the Hydran M2 X s optional analog outputs to a SCADA system The Hydran M2 X has analog outputs that allow you to monitor...

Page 122: ...uired is high For each Hydran M2 X a minimum of seven pairs of wires is required to connect the analog outputs and the four sets of alarm contacts To receive this information four digital inputs and two analog inputs must be available in the SCADA system for each Hydran M2 X 7 1 5 Local Monitoring With a Laptop Computer The local monitoring with a laptop computer method consists of connecting a la...

Page 123: ...a modem connection or an Ethernet network See Chapter 5 Remote monitoring offers the same features and benefits as local monitoring plus Each power station can have its own independent network The station can be entirely automated unmanned A remote computer could monitor several stations from one location 7 2 Data Reading Data gas and moisture level hourly and daily trends alarm messages etc can b...

Page 124: ... event happens alarm triggering parameter modification by the user etc and at fixed configurable logging rates History files can be read as follows With the Hydran M2 X Simply access the History submenu with the Hydran M2 X s keypad For details see Section 3 4 2 With the Perception software The Hydran M2 X s history files can be accessed easily using the Perception software Simply download the his...

Page 125: ...ges that can be displayed due to system fault conditions 8 1 1 Battery L Low Alarm Alarm type Due to system fault conditions Non abbreviated description Low Low battery voltage Alarm message on the Perception software Battery Low Low Priority Average Parameter s involved Batt LL SysOK Relay FaultTrig submenu see Section 3 2 3 Batt Alr LL alarm set point Service VoltPile submenu see Section 3 3 2 3...

Page 126: ...plate above the Alarm Hi SP alarm set point 8 1 4 B P Temp Low Alarm Alarm type Due to system fault conditions Non abbreviated description Low base plate temperature Alarm message on the Perception software Base Plate Temp Low Priority High Alarm cause s Temperature of the base plate below the Alarm Low SP alarm set point 8 1 5 B P Tmp C Open Alarm Alarm type Due to system fault conditions Non abb...

Page 127: ...connections is the one causing the alarm Verify if the HeaterTemp value in the extended Temperature submenu displays 75 C If so the heater plate thermistor cable or a connector in the chain of connections is the one causing the alarm If the two above temperature readings are correct execute the Force Sensor Test command in the Service submenu If the result is different than Good the sensor cable i...

Page 128: ...Alarm cause s The sensor sensitivity has dropped significantly or the sensor is not functioning Replace the sensor as soon as possible Note The Hydran M2 X s sensor is verified twice a month the first and fifteenth days of the month at midnight the relevant parameters are recorded in the Service history file This test can also be performed manually using the Force Sensor Test command in the Servic...

Page 129: ...ee Section 3 2 3 Alarm Hi SP alarm set point Temperature submenu see Section 3 3 2 1 TempoAlr Delay Temperature submenu see Section 3 3 2 1 Alarm cause s Temperature of the sensor above the Alarm Hi SP alarm set point Although the sensor is not affected by the temperature monitor its temperature regularly 8 1 13 S Temp Low Alarm Alarm type Due to system fault conditions Non abbreviated description...

Page 130: ...one install the finned high temperature adaptor shown in Figure A 6 This adaptor is available at General Electric 8 2 RS 232 and RS 485 Communications 8 2 1 No Communication when the Host or Laptop Computer is Connected Directly or by Modem to the Hydran M2 X s DB 9 Connector 1 Ensure the Hydran M2 X s CommChannel parameter communication channel Communication submenu see Section 3 2 7 is set to H2...

Page 131: ...Communication between the Host Computer and the Network of Hydran 201Ci Systems 1 Connect the host computer to each Hydran 201Ci Controller and perform the tests listed in Section 8 2 2 2 Verify all RS 485 network link cables 3 Disconnect all RS 485 link cables and rebuild the network one H201Ci Controller at a time 8 3 Hydran M2 X and Hydran 201Ci Controller s Analog Outputs at Zero 1 If the H201...

Page 132: ...e disappeared to cancel the alarm 4 Verify the relay s contacts and the circuit by setting the corresponding RelayMode parameter to Force On and Force Off in the Hydran M2 X s Relays Analog submenu 8 4 3 Irregular Gas Readings 1 Ensure the valve on which the Hydran M2 X is installed is fully open 2 Confirm the valve type is acceptable full bore gate or ball no restriction between valve and tank Re...

Page 133: ... Service SensorCal Data submenu see Section 3 6 1 1 5 Execute the Hydran M2 X s Force Sensor Test command Relays Analog submenu to test the sensor operation 6 Verify the parameters pertaining to the sensor temperature Temperature submenu 7 Consult the General Electric Customer Service the coordinates can be found at the bottom of page 9 to optimize the value of the parameters and the location of t...

Page 134: ...ogarithmically with the temperature For a constant water concentration ppm the moisture drops rapidly as the oil temperature rises For example in a relatively dry transformer 1 moisture in the paper a 15 C 27 F variation between day and night can produce a variation in moisture of 2 to 3 this effect is stronger in a wet transformer The oil warming causes a reduction of its moisture thus resulting ...

Page 135: ...scribed in this Chapter may not apply depending on the option s installed Please advise the station operator prior to maintenance Working inside the Hydran M2 X may trigger unwanted alarms due to parameter changes power shutdown system rebooting or electro static discharge The Hydran M2 X requires very little maintenance 9 1 Cleaning the Enclosure Exterior Do not remove the cover to prevent electr...

Page 136: ...mes too weak an alarm message will be displayed and broadcast In this case the battery has to be replaced as soon as possible The replacement of the battery must be executed by trained service personnel only Refer to Appendix G for the procedure 9 3 1 Battery Specification For Hydran M2 X units built as from 2013 S N 13xxxxxxxx the battery specifications are the following GE part number 18670 Batt...

Page 137: ...ts before 2012 Low Low alarm 3 05V or 2 45V for units before 2012 When the Low alarm is generated the battery must be replaced within a period of three months When the Low Low alarm is generated the battery must be replaced immediately 9 4 Periodic Maintenance The person in charge of maintenance must already be familiar with the Hydran M2 X to Use and set the Hydran M2 X s parameters with its keyp...

Page 138: ...d in the Service history file 9 4 1 History Files Verification Frequency Annually or on alarm In addition to the annual or on alarm verification the user must also read and save regularly the Hydran M2 X s history files using the Perception software If the data is read from the Hydran M2 X follow the instructions in Section 3 4 2 The data can be collected using the host or laptop computer running ...

Page 139: ...ory The DGA results include the concentrations in parts per million ppm of the following gases Hydrogen H2 Carbon monoxide CO Acetylene C2H2 Ethylene C2H4 Methane CH4 Ethane C2H6 Carbon dioxide CO2 Nitrogen N2 Oxygen O2 The Hydran M2 X gives a composite reading of the first four gases in the above list in other words the gases generated by transformer incipient faults This reading can be compared ...

Page 140: ... the Hydran M2 X may trigger unwanted alarms due to parameter changes power shutdown system rebooting or electro static discharge The surface of the base plate can be hot Heating for the dynamic oil sampling system Section 2 5 is achieved using heating resistors mounted on the internal side of the base plate 9 5 1 Visual Inspection Read all warnings and recommendations in Chapter 1 before handling...

Page 141: ...rify the date and time in Setup Date Time 3 Verify the parameters in Setup Temp Setup 4 Verify the parameters in Setup History Setup History Log Rate 5 Verify the parameters in Setup Comm Setup these parameters can only be accessed using the Hydran M2 X s keypad 6 Verify all parameters in Setup Readings Setup 7 Verify all parameters in Setup I O Setup 8 Verify the operation mode of the five relays...

Page 142: ...5 7 Sensor Tests The Hydran M2 X s sensor test is automatically performed twice a month the first and fifteenth days of the month at midnight The results are recorded in the Service history file 9 5 8 RS 232 Communications Verification Follow the procedure described in Section 5 2 3 3 Note Skip this step if a laptop is used for the present verification process 9 5 9 RS 485 Communications Verificat...

Page 143: ...be decommissioned 5 Verify there is no AC or DC voltage on the mains supply terminals of the unit 6 Verify there is no AC or DC voltage on the cables connected to the analog inputs analog outputs or and digital inputs if present 7 Verify there is no AC or DC voltage on the cables connected to the alarm relays 8 Verify there is no AC or DC voltage on the cable connected to the RS 485 terminals 9 If...

Page 144: ...c enclosure 5 Disconnect the sensor cable from the sensor Rotate the connector anticlockwise approximately 1 8 of a turn then carefully pull it from the sensor Refer to Figure 4 4 6 Using the 5 32 in Allen key carefully open the bleed screw on the sensor about 1 8 of a turn 7 Unscrew the sensor from the valve using an adjustable wrench It is recommended not to use a wrench with jagged jaws as thes...

Page 145: ...s conditions bubbling temperature and aging rate and detection of incipient faults in oil filled electrical equipment ANALYTICAL PERFORMANCE Principle Gas Vacuum resistant gas permeable membrane and combustible gas detector Moisture Thin film capacitive sensor Sampling Method Flooded port with 1 5 in NPT male threads Measurement Gas 25 2 000 ppm volume volume H2 equivalent Range Moisture 0 100 RH ...

Page 146: ...ware Real time operating system menu driven interface Functions Gas level hourly trend and daily trend readings Gas level and gas trends alarms Moisture level and moisture average alarms Alarms due to system fault conditions History data logging Short Term Long Term Events and Service Periodic sensor test Calibration configuration and self test Networking Remote embedded software upgrading Display...

Page 147: ...contacts internal wetting 24 VDC 2 000 V RMS isolation Part Number 17464 MISCELLANEOUS Enclosure Type NEMA 4X IP56 Cast aluminum powder pint white External dimensions 315 mm long x 219 mm wide x 196 mm high 12 4 x 8 63 x 7 72 in For details see Section A 2 1 Electronic Modules Totally encased CPU and I O electronics Sensor Heating Heater plate to maintain sensor between 15 and 65 C 59 and 149 F in...

Page 148: ...mperature 40 to 55 C 40 to 131 F Relative humidity 95 RH non condensing Altitude up to 2 000 m 6 500 feet Storage Temperature 5 to 45 C 41 to 113 F Storage period should not exceed six months Note General Electric has made every reasonable attempt to ensure the completeness and accuracy of these technical specifications However the information contained in these technical specifications is subject...

Page 149: ...Page 149 Hydran M2 X Instruction Manual MA 029 Rev 1 0 30 Jul 18 A 2 Dimensions A 2 1 Enclosure Dimensions Figure A 1 Dimensions of the Hydran M2 X Enclosure Front View ...

Page 150: ...Hydran M2 X Instruction Manual Page 150 MA 029 Rev 1 0 30 Jul 18 Figure A 2 Dimensions of the Hydran M2 X Enclosure Top View Figure A 3 Bottom Clearance ...

Page 151: ...tion Manual MA 029 Rev 1 0 30 Jul 18 A 2 2 Optional Adaptors Dimensions Figure A 4 Dimensions of the 2in NPT Reducing Bushing Optional Part Number 16296 Figure A 5 Dimensions of the 1in to 1 5in Adaptor Optional Part Number 16480 ...

Page 152: ...Hydran M2 X Instruction Manual Page 152 MA 029 Rev 1 0 30 Jul 18 Figure A 6 Dimensions of the 1 5in NPT Finned High Temperature Adapter Optional Part Number 16290 ...

Page 153: ...ge 153 Hydran M2 X Instruction Manual MA 029 Rev 1 0 30 Jul 18 A 2 3 Maximum Dimensions Figure A 7 Maximum Distance for Valves 1 5in or More in Diameter Figure A 8 Maximum Distance for 1in Diameter Valves ...

Page 154: ...owing serial numbers correspond to those indicated on the Test Certificate and Data Sheet and the shipping box Serial number of the sensor located under the sensor s connector Serial number of the Hydran M2 X located on the heater plate 4 3 3 Preparing the Valve 79 1 Wipe the outside of the valve 2 Clean the valve s threads 3 Dispose of the collected oil according to the company regulations 4 3 4 ...

Page 155: ... flange 4 3 6 Opening the Valve and Purging Air from the Sensor 83 1 Close the sensor s bleed screw and then open it 1 8 of a turn 2 Slowly open partially the transformer valve 3 When there are no more air bubbles in the oil shut the bleed screw 4 Open the valve completely 5 Wipe all traces of oil from the sensor 6 Inspect the sensor for oil leaks 7 Tighten the bleed screw 8 Dispose of the collect...

Page 156: ...89 4 3 10 2 Alarm Cable if Used 90 1 Run the cable through a conduit 2 Verify all wires are identified at both ends 3 Connect the wires to the alarm contacts terminal block 4 Connect the other end of the cable to the SCADA system 4 3 10 3 Standard TDM Signal Optional 90 1 Run the cable through a conduit 2 Verify all wires are identified at both ends 3 Connect the wires to the TDM RS 485 terminal b...

Page 157: ... of the cable to the power source 4 3 11 Verifying the Hydran M2 X Operation 92 1 Fasten the cover with the four screws 2 Verify all cable entry points to ensure they are watertight 3 Verify the heating plate is warm 4 4 Configuring the Hydran M2 X 92 4 4 1 Setting the Date and Time 92 1 Set Current Date 2 Set Current Time 4 4 2 Setting the Parameters of the History Files 93 1 Set Short Term Rate ...

Page 158: ...l Page 158 MA 029 Rev 1 0 30 Jul 18 2 Set the Gas Level Alarm parameters log values in Table B 1 3 Set the Gas Hourly Trend Alarm parameters log values in Table B 1 4 Set the Gas Daily Trend Alarm parameters log values in Table B 1 ...

Page 159: ...log values in Table B 2 6 Set the H2O PPM Alarm parameters log values in Table B 2 7 Set the H2O RH Average Alarm parameters log values in Table B 2 Parameter Name H2O RH Alarm H2O PPM Alarm H2O RH Average Alarm H2O PPM Average Alarm Alarm Hi SP RH ppm RH ppm Alarm Hi Hi SP RH ppm RH ppm Alarm Delay Alarm Hi Relay 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Alarm Hi Hi Relay 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Ta...

Page 160: ...larm Delay to _________ minutes 12 If input modules are installed set the Analog Input Alarm Setup parameters log values in Table B 4 13 Set the Sys Fault Trigger parameters 4 4 4 Verifying the Battery Voltage 93 4 4 5 Setting the Dynamic Oil Sampling System Parameters 93 1 Set Temp Set Point to _________ C 2 Set Temp SP Modulation to _________ C 3 Set Temp Mod Period to _________ minutes 4 4 6 Se...

Page 161: ...m Low Relay 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Alarm Hi Relay 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Alarm Hi Hi Relay 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Table B 4 Logging the Values of the Analog Input Alarm Setup Parameters 4 4 7 Configuring the Analog Input s If Used 94 1 Configure the optional analog input s log values in Table B 5 2 Check the optional analog input s Parameter Name 1 2 3 4 Sample Rate Inpu...

Page 162: ... Set Relay 4 Mode to Normal Latch Force On Force Off 4 4 11 Verifying the Sensor Parameters 95 1 Gas detector parameters correspond to those on Test Certificate 2 Moisture sensor parameters correspond to those on Test Certificate 4 4 12 Logging Values of the Service Data 95 Parameter Value Parameter Value Service L Service V Service I Service U Service A Service F Table B 6 Logging the Values of t...

Page 163: ... communication parameters Set DB9 Baud Rate to _________ bps Set 485 Baud Rate to _________ bps identical for all Hydran M2 X s Set Comm Mode to Answer Only or Call on Alarm Set RS232 RS485 to Disabled 5 2 3 Installing and Configuring a Laptop Computer 103 5 2 3 1 Connecting a Laptop Computer 103 1 Remove the cover of any Hydran M2 X in the network 2 Connect the RS 232 cable to the Hydran M2 X 3 C...

Page 164: ...onnecting a Hydran M2 X to the Hydran 201i Controller 105 1 Run the supervisory link cable through a conduit from the first or last Hydran M2 X in the daisy chain 2 Ensure all wires are identified 3 Connect the wires to the Hydran M2 X s termination block 4 Connect the other end of the cable to the Hydran 201Ci Controller ...

Page 165: ...Page 165 Hydran M2 X Instruction Manual MA 029 Rev 1 0 30 Jul 18 Appendix C Functional Block Diagram Figure C 1 Functional Block Diagram of the Hydran M2 X ...

Page 166: ...e right side of the electronic card cage see Figure D 1 Figure D 1 General Wiring of the RS 485 Terminal Block The RS 485 link requires instrumentation grade or armored cables shielded triad Table D 1 on the next page describes the connections for the TDM and RS 485 network link terminal block To RS 485 In of other Hydran M2 X or Hydran 201Ci From RS 485 Out of other Hydran M2 X ...

Page 167: ...5 Out shieldb 9 RS 485 In common a From RS 485 Out terminals of other Hydran M2 X 10 RS 485 In 11 RS 485 In 12 RS 485 In shieldc Table D 1 Connections for the TDM and RS 485 Network Link Terminal Block a The RS 485 link is not electrically isolated The Hydran M2 X s from a single network thus share the same ground reference common b The shield at this terminal is internally connected to ground thr...

Page 168: ... M2 X and a Hydran 201Ci 1 Controller Note The Hydran 201Ci 1 Controller can only display the gas level measured by the Hydran M2 X not the moisture level Note Use the same wiring to connect the optional TDM terminal block to a Hydran 201Ci Controller If the RS 485 link is already connected to the controller as shown in the above figures connect only the optional TDM terminal block as directed ...

Page 169: ...the Supervisory Link between a Hydran M2 X and a Hydran 201Ci C Controller Figure D 5 Wiring of the Supervisory Link between a Hydran M2 X and a Hydran 201Ci 4 Controller Note The Hydran 201Ci 1 Controller can only display the gas level measured by the Hydran M2 X not the moisture level ...

Page 170: ...xternal Comments 1 Power External sensor typically a top oil temperature or load current sensor a 4 20 mA general purpose input 1 500V rms isolation level 2 4 20 mA analog input 3 4 20 mA analog input 4 Shield Table D 2 Connections for the Analog Input Terminal Block a Magnetic mount temperature and current sensors are available at General Electric See Figure D 8 to Figure D 10 on the following pa...

Page 171: ...29 Rev 1 0 30 Jul 18 Figure D 7 General Wiring of the Analog Input Terminal Block Figure D 8 Wiring of Self Powered Analog Inputs Note This optional Analog Input board can be installed at any of the four I O locations Active 2 wire 4 20mA Sensor ...

Page 172: ... Wire Loop Powered Analog Inputs Figure D 10 Wiring of Three Wire Loop Powered Analog Inputs D 3 Analog Output Terminal Blocks These terminal blocks are located on the right side of the electronic card cage see Figure D 11 2 wire 4 20mA Loop powered Sensor 3 wire 4 20mA Loop powered Sensor ...

Page 173: ...al Wiring of the Analog Output Terminal Block The recommended cable is individually twisted and shielded pairs of copper multi stranded wires with a shield a steel armor and a PVC overall jacket Note This optional Analog Output board can be installed at any of the four I O locations ...

Page 174: ...alog Output Terminal Block a Use one shielded pair 100 cover twisted 18 AWG 0 93 mM2 X b The CFG terminal is only used by General Electric to test the analog output card to ensure it gives a good voltage Figure D 12 Wiring of the 4 20 mA Analog Output Terminal Block D 5 Limitations In a current loop any length of cable and number of devices can be connected in series provided that the following co...

Page 175: ...corder input Note Do not exceed 300 Ω see Section D 5 on the previous page D 7 AC Power Supply Terminal Block and External Ground Lug The ac power supply terminal block is located on the left side of the electronic card cage Figure D 13 below The connections are described in Table D 4 on the next page The ac cable must have multi stranded copper wires an inner shield a steel armor and an overall P...

Page 176: ...y Enclosure ground Earth Unless otherwise required by the application local regulations the ground wire from the power supply cable must not be connected to this terminal Use external ground lug insteada Table D 4 Connections for the AC Power Supply Terminal Block 1 Connect a ground wire to the external terminal lug Use a 10 6 AWG approximately 5 3 13 3 mM2 X copper wire Not connecting the ground ...

Page 177: ...d on the left side of the electronic card cage see Figure D 15 on the next page The connections are described in Table D 5 Figure D 14 Wiring of the Alarm Contacts Terminal Block The recommended alarm cable has multi stranded copper 600 V multi conductors as well as an inner shield a steel armor and a PVC overall jacket Five 5 alarm relays Software configurable SPDT Form C contacts 1 Normally Open...

Page 178: ...High alarms 8 Common 9 NC 10 4 NO User configurable normally assigned to moisture High High alarms 11 Common 12 NC 13 5 NO Not configurable used only for alarms due to system fault conditions NO is closed if system is OK NC is open if system fails 14 Common 15 NC Table D 5 Connections for the Alarm Contacts Terminal Block a Designed for 16 14 AWG 1 37 2 03 mM2 X wires b Electric specifications for...

Page 179: ... J14 4 Remove the four screws holding in place the controller board 5 Remove the two screws holding in place the I O assembly and remove the I O assembly from the electronic card cage See Figure E 2 on the next page 6 Secure each I O interface in one of the four locations using the following parts Two screws PAN 6 32 5 16 SS Phillips part number 16423 Two washers flat 6 ID 0 143 OD 0 267 SS part n...

Page 180: ... the cover plate of the electronic card cage See Figure E 1 E 3 above 11 Put back the Hydran M2 X cover 12 Put back and tighten the four screws holding the cover in place See Figure 4 11 The hardware installation of the I O interface s is now complete See the following sections to verify the I O interface s that have just been installed Analog input Section 4 2 8 Analog output Section 4 2 9 ...

Page 181: ...s follows 1 Ensure you have the CB APP file which contains the upgrade for the controller board program It can be found in the following folder of the installation CD drive letter HM2 X Firmware Control Board x yz where x yz is the version number 2 Verify the version number of the controller board program currently running To do so access Main Menu Service Software Version using the Hydran M2 X s ...

Page 182: ...m Files Hydran M2 X The HM2 X Downloader for Boot Mode screen shown in Figure F 1 below is now displayed Proceed as follows In Comm port select the appropriate COM port In Baud rate select the same baud rate as in step 6 Click Browse to locate the CB APP file Click Download to start the program upgrade Figure F 1 Upgrading the Embedded Program Using BootDownloader exe 7 The Hydran M2 X now display...

Page 183: ...nd then resumes normal operation Ensure the upgrade process has been successful by verifying the version number of the controller board program To do so access Main Menu Service Software Version using the Hydran M2 X s keypad Note If the communication link is broken during the upgrade process start the procedure again from the beginning ...

Page 184: ...ult parameter values have not been changed 1 Because some Hydran M2 X s parameters are lost see above when the battery is disconnected they must be recorded There are two methods Use the Perception software For connection details see Chapter 5 for details on the software see the Perception Manual History files are transferred automatically as soon as the communication is established between the Pe...

Page 185: ...ons on the disposal or recycling of batteries This product contains a battery that cannot be disposed of as unsorted municipal waste in the European Union See the product documentation for specific battery information The battery is marked with this symbol which may include lettering to indicate cadmium Cd lead Pb or mercury Hg For proper recycling return the battery to your supplier or to a desig...

Page 186: ...dification of the battery voltage alarm s delay BaudRate c Modification of the transmission rate bits per second CableOpen OFF Open cable alarm turned off CableOpen ON Open cable alarm turned on CableShort OFF Short circuit cable alarm turned off CableShort ON Short circuit cable alarm turned on CommMode chg Modification of the communication mode Date Time chg Modification of the date and or time ...

Page 187: ...igh High alarm s set point GasAlr L chg Modification of the gas level Low alarm s set point GasAlr L OFF Gas level Low alarm turned off GasAlr L ON Gas level Low alarm turned on GasAlr LL chg Modification of the gas level Low Low alarm s set point GasAlr LL OFF Gas level Low Low alarm turned off GasAlr LL ON Gas level Low Low alarm turned on GasDelay chg Modification of a gas level alarms delay H2...

Page 188: ... Hourly trend Low Low alarm turned off HourAlr LL ON Hourly trend Low Low alarm turned on HourDelay chg Modification of the hourly trend alarm s delay HourAcqRate chg Modification of the hourly trend period InternalErr 0 Internal error No 0 InternalErr 1 Internal error No 1 InternalErr 2 Internal error No 2 InternalErr 3 Internal error No 3 InternalErr 4 Internal error No 4 InternalErr 5 Internal ...

Page 189: ...or temperature High High alarm s set point STempAlr HH ON Sensor temperature High High alarm turned on STempAlr L chg Modification of the sensor temperature Low alarm s set point STempAlr L ON Sensor temperature Low alarm turned on STempAlr LL chg Modification of the sensor temperature Low Low alarm s set point STempAlr LL ON Sensor temperature Low Low alarm turned on STempDelay chg Modification o...

Page 190: ... RH Level Hi Alarm RH Hi Alarm H2O RH Level High RH Level Hi Hi Alarm RH Hi Hi Alarm H2O RH Level High High H2O PPM Level Hi Alarm H2O PPM Hi Alarm H2O PPM Level High H2O PPM Level Hi Hi Alarm H2O PPM Hi Hi Alarm H2O PPM Level High High RH Hourly Average Hi Alarm RH Avg Hi Alarm HighH2O RH Hourly Average RH Hourly Average Hi Hi Alarm RH Avg Hi Hi Alr H2O RH Hourly Average High High H2O PPM Hourly ...

Page 191: ...fined 1 Low Low Alarm IO 1 LL Alr IO 1 Low Low An User Defined 1 Low Alarm IO 1 L Alr IO 1 Low An User Defined 1 Hi Alarm IO 1 H Alr IO 1 High An User Defined 1 Hi Hi Alarm IO 1 HH Alr IO 1 High High An User Defined 2 Low Low Alarm IO 2 LL Alr IO 2 Low Low An User Defined 2 Low Alarm IO 2 L Alr IO 2 Low An User Defined 2 Hi Alarm IO 2 H Alr IO 2 High An User Defined 2 Hi Hi Alarm IO 2 HH Alr IO 2 ...

Page 192: ...Defined 4 Hi Hi Alarm IO 4 HH Alr IO 4 High High Hydran Sensor Cable Open Alarm Gas C Open Alarm H2 Sensor Test Cable Open Hydran Sensor Cable Short Alarm Gas C Short Alarm H2 Sensor Test Cable Short Hydran Replace Sensor Now Alarm Gas Sens Bad Alr H2 Sensor Test Bad Sensor Card 1 Comm Error Alarm S Card Comm Err Alr Sensor Comm Failure Table I 1 Alarm Messages on the Hydran M2 X Display and on th...

Page 193: ...hould fill the syringe If not slowly pull the syringe s plunger 5 When the syringe is full shut off the bleed screw 6 Close the stopcock valve of the syringe 7 Withdraw the syringe 8 Empty the syringe ensure all air bubbles are purged from the syringe This first extraction allows oil to wet the inner walls of the syringe with liquid to assure better accuracy of sampling 9 Repeat steps 2 to 7 to ex...

Page 194: ... Example For a 4 8 mA current the level of gases in oil is 100 ppm Likewise if the display reads 250 ppm then the current value is 6 0 mA K 2 Moisture Level and Relative Humidity Converting to ppm Concentration The relative saturation RS often called the relative humidity RH is expressed in units of percent It is the concentration of the water dissolved in the oil PPM relative to the solubility or...

Page 195: ...sponsibility to determine his own Equation 3 based on the nature of the specific transformer oil in order to ensure the accuracy of the computed PPM values Otherwise caution should be exercised when comparing the displayed PPM value with a laboratory s Karl Fischer result As an example Table K 12 on the next page and Figure K 13 on the next page show the water solubility or often called saturation...

Page 196: ... the relative saturation of water in the oil which gives the following information Relative saturation of the oil at the operation temperature Temperature at which the water will saturate and condense in the oil Estimation of the water percentage in the paper insulation system For instance in the calculation of the moisture content in the insulating paper the relative saturation is more significan...

Page 197: ...tion below Figure L 1 Hydran 201Ci C Communications Controller L 2 Vibration Absorbing Rubber Pads The vibration absorbing rubber pads Figure L 2 on the next page are used to protect the Hydran 201Ci Controllers against vibrations These pads can be ordered separately or with the Hydran M2 X The H201Ci C is built into a heated Type NEMA 4X enclosure approximately 20 x 30 x 12 cm 8 x 12 x 4 75 in Th...

Page 198: ...Hydran M2 X Instruction Manual Page 198 MA 029 Rev 1 0 30 Jul 18 Figure L 2 Vibration Absorbing Rubber Pads Vibration absorbing rubber pads ...

Page 199: ...sc Read Only Memory CE Conformité Européenne European Conformity CH4 Methane gas C2H2 Acetylene gas C2H4 Ethylene gas C2H6 Ethane gas CO Carbon monoxide gas CO2 Carbon dioxide gas COM COMmunication port on a PC Combustible Gas Fault gas in the dielectric oil of a transformer CPU Central Processing Unit CSA Canadian Standards Association CT Current Transformer D A or DAC Digital to Analog Converter...

Page 200: ...by device GE General Electric GND GrouND Earth GUI Graphical User Interface H or Hi High alarm H2 Hydrogen gas HH or Hi Hi High High alarm History File This include Short Term Long Term Events and Service data that are stored in the Hydran M2 X s memory HMI Human Machine Interface H2O Water Host Computer Computer connected remotely to a Hydran M2 X or a network of Hydran M2 X s Hourly Trend Variat...

Page 201: ...es LAN Local Area Network LCD Liquid Crystal Display LED Light Emitting Diode LL or Lo Lo Low Low alarm Local Network Local network of Hydran M2 X units or Hydran 201i systems using RS 485 link Local Site User location where the data of the remote site is being analyzed mA milli Ampere mAdc milli Ampere Direct Current Main Menu Menu that gives access to the most frequently used operation parameter...

Page 202: ...of measurement values that an instrument is capable of reading RAS Remote Access Service RDBMS Relational Data Base Management System Real Time Pertaining to a system or operating mode under which computation is performed during the actual time when an external process occurs Remote A connection with Hydran M2 X unit s using a modem or Ethernet connection through a distant host computer Repeatabil...

Page 203: ...uOrethyleNe TM TradeMark TUV Technischer Überwachungs Verein Technical Inspection Association User Person operating the device Hydran M2 X User Friendly An interface application easy to use User Interface Means provided to interface with a device display keypad push button etc µV Microvolt V Volt VA Volt Ampere Vac Volt Alternating Current Vdc Volt Direct Current VDE Verein Deutscher Elektrotechni...

Page 204: ...l Estate East Lissue Walk Lisburn BT28 2LU United Kingdom Tel 44 28 9262 2915 Fax 44 28 9262 2202 Email ge4service ge com Web www gegridsolutions com md htm Customer Service Center 24 hours a day 365 days a year Tel 1 800 361 3652 United States and Canada Tel 1 514 420 7460 worldwide Email ge4service ge com ...

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