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CB Watch 3 User Manual

v6.3 - May 2019

Page 54 of 100

Setting Alarms

Notice:

It is the customer’s responsibility to decide whether to set alarms or not and to

decide what thresholds to set alarms at, as this will depend on the customer’s

operational priorities and risk philosophy. However, here are some guidelines that may
prove helpful in deciding what threshold values to use:

Alarm summary

This table summarises all the alarms that can be set in terms of contact wear monitoring.

Figure 82

–

Contact wear alarm summary

Threshold values

Arcing time

In the absence of any other value, a maximum arcing time of one complete power cycle
should be set (20ms for 50Hz in Europe/Asia, 17ms for 60Hz in NAM). This gives two
chances for the arc to be extinguished when the current crosses the zero point.

Contact wear

Contact electrical wear thresholds T1 and T2 should be entered in accordance with the

arcing contact manufacturer’s recommendations and based on

the operational planning

lead-time required to purchase new ones and go replace them:

-

T1 - approaching contact wear limit - for example 120 KA

2

s

-

T2 - contacts need to be replaced - for example 150 KA

2

s

When installing on an already operational CB, we may need to enter during setup an
estimate of the cumulative electrical wear to date. This is very tricky to do and should be
avoided if possible as an incorrect guess may lead to an incorrect assumption as to the
status of the contacts:

However, if the number of operations already performed is small and the history is
known from the relays and fault recorders, you can rebuild the history and calculate the
starting contact wear value.

As a last resort, a rough estimation can be made using a formula along these lines:

Multiplying the (standard line current x 2) squared, by the standard arcing time

The factor 2x is there to take into account that an estimated 1 in 10 operation will have
been under extreme fault current 10x greater than normal. An even greater factor may
be used (more conservative in terms of contact wear) depending on the operational
history of the CB.

Min Alarm Max Alarm

Digital

Relay

Arcing time, per pole

No

Yes

Yes

Yes

Cumulative contact wear, per pole

No

Yes, 2x

Yes

Yes

Data obtained from CBW3

Thresholds

Alarms available

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Содержание CB Watch 3

Страница 1: ...CBW3 User Manual v6 3 May 2019 GE Grid Solutions CB Watch 3 Circuit Breaker Monitoring System User Manual ...

Страница 2: ...available Without Travel Sensor 17 Additional Functionalities With Travel Sensor 26 Timing Compensation 31 Setting Alarms 33 SF6 GAS MONITORING 36 General Description 36 Gas Measurements 38 Setting Alarms 47 CONTACT WEAR MONITORING 49 General Description 49 Interrupted Current 49 Arcing Time 50 Arcing contact wear 52 Setting Alarms 54 CONTROL CIRCUIT MONITORING 56 General description 56 DC Supply ...

Страница 3: ...ms 88 GENERIC ANALOGUE CHANNEL MONITORING 90 General Description 90 Configuration 90 Alarms 91 DRY CONTACT RELAY ALARMS 92 General Description 92 Available alarm relays 92 Alarm assignment to each relay 93 Clearing alarms 94 DIGITAL COMMUNICATION 95 Protocols 95 REMOTE ASSISTANCE 96 Assistance File 96 Product System Files 96 TECHNICAL SPECIFICATION 98 Measurements 98 Contact Copyright Details 100 ...

Страница 4: ...ncy alarm 19 Figure 22 Setting operation counter alarms 19 Figure 23 Auxiliary contact timing 20 Figure 24 Auxiliary contact opening and closing graphs 20 Figure 25 Auxiliary contacts switching threshold 20 Figure 26 Monitoring the auxiliary contacts 20 Figure 27 Operating time measurement 21 Figure 28 Last operation measurements 22 Figure 29 Operating time discordances 23 Figure 30 Entry of key d...

Страница 5: ...before and during interruption 49 Figure 75 Interrupted current value 50 Figure 76 Stored interrupted current curve 50 Figure 77 Separation offset input 51 Figure 78 Opening operation timing diagram 51 Figure 79 Arcing time 51 Figure 80 Max arcing time threshold 51 Figure 81 Max arcing time threshold 52 Figure 82 Contact electrical wear cumulative value 52 Figure 83 Initial electrical wear setting...

Страница 6: ... alarms 70 Figure 119 Number of pumps setup 71 Figure 120 Pump run time 71 Figure 121 Pump data in last 24hr 72 Figure 122 Historical pump data graphs 72 Figure 123 Pump operations alarm thresholds 73 Figure 124 Pump run time initial value 73 Figure 125 Pump operation alarms 73 Figure 126 Pump motor current 73 Figure 127 Drop down list of previous archives 74 Figure 128 Maximum inrush current 74 F...

Страница 7: ...alogue channels display 90 Figure 153 Spare analogue channels alarm thresholds 91 Figure 154 Spare analogue channels alarms 91 Figure 155 Alarm colour coding 92 Figure 156 Gas alarm assignments 93 Figure 157 Alarm sections for each monitoring function 93 Figure 158 Clearing gas related alarms 94 Figure 159 Clearing operations related alarms 94 Figure 160 Protocols available 95 Figure 161 Generatin...

Страница 8: ...e CBW3 and how they can be used to monitor a high voltage circuit breaker All outputted information is detailed as well as all the possible alarms that can be set Communication and system settings are also covered Please refer to the CBWatch3 Installation Manual for information on the various modules and sensors comprising the CBW3 system It provides all the necessary information to install and co...

Страница 9: ... Manual Figure 1 CBW3 Modules 1 Power supply 5 AI8 2 Module 2 ProWatch Module 6 AI8 3 Module 3 DI16 Module 7 RTD8 Module 4 AI8 1 Module 8 DO16 Module Sensors Depending on your CBW3 configuration various sensors are connected to the modules either directly or through terminal blocs These sensors acquire the data from the circuit breaker so that it can be received by the corresponding I O modules an...

Страница 10: ...nd the curves graphs recorded in memory TCP IP configuration Before you can access the CBW3 s HMI you must first configure your network adapter accordingly Open Network Connections by clicking the Start button and then clicking Control Panel In the search box type adapter and then under Network and Sharing Center click View network connections And then click change adapter settings Figure 3 Networ...

Страница 11: ...he CBW3 you will need to set your network adapter to another address on that network for example 192 168 5 30 The last number 30 could be between 1 and 254 with the exception of 22 which is the CBW3 address To do that select Use the following IP address and enter The IP address 192 168 5 30 The sub net mask 255 255 255 0 and then click OK You can leave the DNS server settings blank Figure 5 Networ...

Страница 12: ...le actually work Please contact GE to acquire a correct and tested SFP module Figure 7 Connection to the CBW3 Alternatively connect onto or VPN into the same network as the one the CBW3 is on Launch any Internet browser for example Google Chrome or Mozilla Firefox but preferably not Internet Explorer which is old and has compatibility issues and enter the CBW3 s IP address in the address line 192 ...

Страница 13: ...tion advanced page Please disregard the unsafe warning and proceed anyway to the IP address that you know It is possible to save the IP address into your browser and tell it that it is trusted so that the message will no re appear the next time You will then get to the CBW3 welcome page which will ask you for authentication Figure 10 HMI CBW3 log in ...

Страница 14: ...pervisor Only parameters for setting alarms are adjustable It is possible to download parameters file 3 Username specialist Default password specialist All of the parameters relative to the application are adjustable In particular all those required for setting up the system Language Once you have access to the HMI of the CBW3 the language tab enables you to select the language that the HMI will u...

Страница 15: ...ons being used you would select the System section first and then the Product info tab HMI System Product Info Figure 13 CBW3 product information Also in this user manual we will often as in the example above mask part of the page displayed with a blue screen in order to focus attention on the relevant part of the page When changing any setting in the HMI please note that before the adjustment of ...

Страница 16: ... latest version Please refer to an older version of the User Manual if there are discrepancies with what is described here Changing Passwords Passwords can be changed for each username access level by Logging in at the desired access level Going to the System Product Info page Entering the current password for that access level Entering twice the new password that you want to set Pressing change H...

Страница 17: ...irst is by far the most common Functionalities available Without Travel Sensor Number of operations For each pole the following information is recorded date and time of the last opening and closing operation time elapsed since the corresponding previous close open operation cumulative number of opening and closing operations performed HMI Measurements Last opening results or Last closing results F...

Страница 18: ... contact is OFF when circuit breaker is CLOSED and vice versa HMI Measurements Sensors Figure 19 Auxiliary contact status In an IPO CB if the 52a or 52b contacts do not show the same value for all 3 poles for longer than the pole discrepancy timeout set then a Pole discrepancy alarm is raised This alarm can serve as a reminder of a temporary phase imbalance in an IPO CB and that the situation shou...

Страница 19: ...f operation that has occurred using the following rules If the system sees a Closing operation first it will check for another Opening operation during the sampling time If it does not see one then it declares a simple Closing operation C If it does see one then it declares a Closing Opening operations CO If the system sees an Opening operation first it will check for another Closing operation dur...

Страница 20: ...e for each pole HMI Measurements Operations Charts Opening and Closing Figure 24 Auxiliary contact opening and closing graphs An Aux contacts timeout maximum threshold value can be entered during setup under HMI Settings Operations Monitoring Figure 25 Auxiliary contacts switching threshold An alarm is raised if after an operation request has been detected the 52a 52b contacts do not switch status...

Страница 21: ...ing is made of The date and time of the appearance of the close command on the control circuit The Reaction time t1 between the appearance of the close command and the moment where the circuit breaker leaves the open position and the 52b auxiliary contact changes status The Operation time t2 between the appearance of the close command and the moment where the circuit breaker arrives in the closed ...

Страница 22: ...iming are compared for each pole and any differences are highlighted The discordances are the timing differences pole to pole A B A C C B The maximum discordance is also recorded also referred to as discrepancy There will always be small differences pole to pole but these should be kept small as high values may lead to large voltage spikes being generated that could potentially damage network and ...

Страница 23: ...able speed calculations the system requires two key distances to be entered during setup measured in mm from the fully open position which is 0mm In this example O Start of open position location of 52b sensor 15mm here C Start of close position location of 52a sensor 120mm here HMI Settings Opening and Settings Closing Figure 30 Entry of key distances The distance C O in this example 120 15 105mm...

Страница 24: ...mum t2 pole to pole discrepancy Minimum and maximum Travel time t2 t1 per pole Maximum t2 t1 pole to pole discrepancy Minimum contact separation speed per pole Closing Minimum and maximum Reaction time t1 per pole Maximum t1 pole to pole discrepancy Minimum and maximum Operation time t2 per pole Maximum t2 pole to pole discrepancy Minimum and maximum Travel time t2 t1 per pole Maximum t2 t1 pole t...

Страница 25: ...if for any of the poles the measured calculated value during an opening or closing operation is found to be beyond the thresholds set i e below the minimum value or above the maximum value set HMI Settings Operations Monitoring Figure 33 Alarms related to operation timing ...

Страница 26: ...34 Entry of distances Using the travel sensor information Because we have a travel sensor we get real time information on the position of the contacts during opening and closing operations As the sensor passes one of the pre defined position setup in the section above then the system records the time and uses this value for calculations For each opening operation and for each of the poles a record...

Страница 27: ...0 Operation Graphs A distance vs time graph is recorded during each operation and stored HMI Measurements Operations charts Opening Figure 35 Operation graphs for opening HMI Measurements Operations charts Closing Figure 36 Operation graph for closing ...

Страница 28: ...nitoring the auxiliary contacts Since the travel sensor displacement limits min and max in mm for the physical open and closed positions have been entered with tolerances in the setup an alarm is then raised if the travel sensor position is not within these limits HMI Measurements Alarms Figure 38 Monitoring the auxiliary contacts Close position alarm Despite what 52a auxiliary sensor indicates tr...

Страница 29: ...asured values The maximum travel point reached during the operation The final resting position at the end of the operation as measured by the travel sensor and shown on the travel curve Figure 39 Monitoring the overtravel HMI Measurements Last opening results and Last closing results Figure 40 Displaying overtravel An alarm threshold can be entered for the maximum overtravel ...

Страница 30: ... HMI Settings Operations monitoring Figure 41 Overtravel threshold An alarm is raised if during an opening or closing operation the overtravel value measured exceeds the Max overtravel threshold entered HMI Measurements Alarms Figure 42 Overtravel alarm ...

Страница 31: ... circuit breaker and therefore should be compensated for before triggering an alarm to avoid false alarms These compensations can be activated or not both for opening and closing operations depending on the availability of the necessary compensation information The information required is detailed below and requires filling in a table during setup Data for compensation should be made available fro...

Страница 32: ...first example Figure 44 Two examples of operating time temperature compensation values Voltage compensation The control line voltage compensation depends on the actual DC voltage being supplied to the coil when the command is sent compared to the nominal DC voltage It requires the presence of the DC voltage measurement sensor to provide the measured DC voltage information required The coil voltage...

Страница 33: ... pole No Yes Yes Opening reaction time t1 per pole Yes Yes Yes Yes Opening operation time t2 per pole Yes Yes Yes Yes Opening travel time t2 t1 per pole Yes Yes Yes Yes Opening reaction time t1 discordance No Yes Yes Yes Opening operation time t2 discordance No Yes Yes Yes Opening travel time t2 t1 discordance No Yes Yes Yes Opening contact separation speed per pole Yes No Yes Yes Closing reaction...

Страница 34: ... and touching speed Contact separation speed distance travelled opening travel time Contact touching speed distance travelled closing travel time Required data with travel sensor present When a travel sensor is present and used the following distances in mm are required by the system The timing is measured when the travel sensor reaches these positions A Open position Always 0mm as we start measur...

Страница 35: ...results The minimum values are the important ones Opening Closing Reaction time discordance Opening Closing Operation time discordance Opening Closing Travel time discordance Data is usually available from the CB User Manual A typical discordance threshold value would be 3 5ms but it depends on the CB type and state Opening contact separation speed per pole Data is usually available from the User ...

Страница 36: ...tect any gas leak early so as to reduce cost avoid penalties and save the environment Measurement principle Because gas pressure varies with temperature see figure below pressure values cannot be compared over time unless they are temperature compensated The variation of pressure with temperature is linear in the range of service 25oC to 50oC Comparisons are therefore made using either pressure no...

Страница 37: ...alarms In case the system loses communication with the gas sensor for example if the cable has been cut and therefore there is no answer from the digital sensor then the sensor power supply is turned off and on again to reset the communication protocol and ensure that it is not a communication error A counter is kept of the number of no answer The reset procedure may be repeated 3 times before the...

Страница 38: ... may not be accurate The value is not displayed in the HMI and is replaced by a instead Gas Measurements Gas pressure temperature density It is possible to visualise the following gas information in the HMI either for one of three separate tanks depending on the number of sensors installed HMI Measurements Gas Figure 49 Gas measurements The following information is available Pressure gas pressure ...

Страница 39: ...re Gas pressure alarms Since all the nameplate values are usually given as gas pressures at 20oC it is against this value that thresholds for alarms are entered 3 standard thresholds are available Threshold 1 nearly too low when the pressure falls below this threshold the CB is still capable of fulfilling its function but a gas refill action is required to prevent threshold 2 being reached Thresho...

Страница 40: ...mperature the liquefaction pressure is very high and is not a problem but the curve drops rapidly so that the liquefaction pressure gets closer to our operating pressure range when the temperature falls below freezing Therefore if the gas temperature falls below 3oC 37 4oF the liquefaction pressure for the gas or gas mixture at 20oC is displayed so that it can be compared to the current gas pressu...

Страница 41: ...tinuously displayed in the HMI HMI Measurements Gas Figure 55 Gas moisture level The moisture level is indicated in ppmv parts per million by volume This is the units most commonly used and quoted in the IEC standard 62271 1 This value represents one million times the ratio of the volume of moisture water vapor present in the gas to the total volume of the gas including water vapor An alarm can be...

Страница 42: ...long term time horizon Figure 58 Linear gas pressure extrapolation Short term extrapolated pressure at 20 C future value computed using linear regression and a history of 2 5x the short term horizon Long term extrapolated pressure at 20 C future value computed using linear regression and a history of 2 5x the long term horizon Note when there are not enough data points recorded to date to calculat...

Страница 43: ...reliable detection of relatively rapid leaks is carried out by comparing the measured extrapolated pressures of the three volumes taken two by two HMI Measurements Gas Figure 60 Forecasted gas pressure values Gas leak rates Whenever there is a leak in the gas system this manifests itself as a drop in the gas pressure Short term pressure leak rate in pressure unit per hour Long term pressure leak r...

Страница 44: ...reshold 1 nearly too low that has been set This means that the gas pressure level will be below threshold 1 within the long term horizon that has been set The short term alarm is raised if the extrapolated gas pressure at 20oC is calculated to drop below the gas threshold 2 too low lock out that has been set This means that the gas pressure level will be below threshold 2 within the short term hor...

Страница 45: ...ity Gas pressure at 20oC Gas temperature The long term selection displays the history of Gas density Gas pressure at 20oC Gas temperature Gas moisture You can adjust the time span on all the graph s X axis narrow down the time span to focus on a period by selecting highlighting it with your mouse HMI Measurements Gas Short term Figure 65 Short term gas graphs ...

Страница 46: ...CB Watch 3 User Manual v6 3 May 2019 Page 46 of 100 HMI Measurements Gas Long term Figure 66 Long term gas graphs ...

Страница 47: ... table summarises all the alarms that can be set in terms of SF6 gas monitoring Required data The data required to set alarm thresholds is readily available from the CB user s manual or from the CB s name plate Figure 67 Gas level data Min Alarm Max Alarm Digital Relay Gas pressure at 20 C Yes 2x Yes Yes Yes Gas liquefaction risk Yes No Yes Yes Gas moisture level No Yes Yes Yes Gas short term extr...

Страница 48: ... any gas leak is detected as early as possible so that it can be fixed before too much gas is lost then the warning level threshold T1 above should be set to show T1 A small decrease below nominal pressure to alert that there is a leak closer to nominal and further away from the warning level of the density meter In terms of tolerances min max values for each threshold we would suggest using from ...

Страница 49: ...nt The arcing time is measured and used to highlight any increase showing degradation in the current interruption performance and possibly even a non interruption If we measure the current interrupted square it and multiply it by the arcing time we get the I2T measure of the energy that the contact has been subjected to By keeping a cumulative total of this energy throughout the life of the contac...

Страница 50: ...gure 71 Stored interrupted current curve Arcing Time Arcing time measurement During an open operation we are particularly interested in the Arcing time To calculate that we need to know when the arcing starts as we know that it finishes when the interrupted current CTs show a measured value of zero When there is a travel sensor present we can determine exactly when the arcing contacts have physica...

Страница 51: ...gure 73 Opening operation timing diagram Using either of these two methods the arcing time can be calculated and shown for each operation HMI Measurements last opening results Figure 74 Arcing time Arcing time alarm To receive a warning when the breaker is not interrupting the arc fast enough and the arcing time is too long an alarm can be set against a maximum threshold HMI Settings Opening Figur...

Страница 52: ...i t 2dt The function above is set by default to f Irms 1 for all Irms values The calculated value above represents the electrical deterioration for the operation under consideration It is then added to the cumulative figure to obtain the total electrical wear per phase that the contact has endured so far Cumulative electrical contact wear Electrical contact wear per operation The cumulative electr...

Страница 53: ...Threshold 2 an alarm level contacts need to be replaced HMI Settings Opening Figure 79 Opening electrical wear thresholds Any alarm raised can be seen in the HMI HMI Measurements Alarms Figure 80 Arcing contact electrical wear alarms Non linear contact wear To account for the case where the electrical wear is not linear higher wear at lower currents for examples the function above can be modified ...

Страница 54: ...d go replace them T1 approaching contact wear limit for example 120 KA2s T2 contacts need to be replaced for example 150 KA2s When installing on an already operational CB we may need to enter during setup an estimate of the cumulative electrical wear to date This is very tricky to do and should be avoided if possible as an incorrect guess may lead to an incorrect assumption as to the status of the...

Страница 55: ...6 3 May 2019 Page 55 of 100 If not monitored If this function is not being monitored and no sensors are present then the threshold values should be set as such to avoid any erroneous alarm Figure 83 Contact wear alarm summary ...

Страница 56: ...xplained in section 4 4 3 This can occur when the DC power is supplied by substation batteries not in optimal shape and when several operations are taking place at the same time With the appropriate sensor installed the CBW3 can continually monitor DC voltage source 1 and DC voltage source 2 if present that supply the coil circuit voltage The values are displayed in the HMI HMI Measurement Sensors...

Страница 57: ... coil Any partial reduction in the number of turns reducing the ability of the coil to trip the latch will change the impedance of the coil and will be detected through a resulting increase in the current used and a lengthening of the time to reach actuation level A small degradation of the coil can therefore be detected before it becomes problematic and the coil becomes open circuit preventing th...

Страница 58: ...o show a higher current and a longer coil charge Figure 89 Change in coil charge Please note that in some protection schemes both the opening 1 and backup opening 2 relays are fired simultaneously rather than only if the other one fails to open the breaker In this case it is impossible to predict which of the relay will operate which pole of the circuit breaker The CBW3 system determines which sig...

Страница 59: ...charts opening or closing Figure 90 Graph of coil current during opening or closing operation The current curves from the last operations are stored so the user can review and compare any previously saved curve using the drop down menu Figure 91 Drop down list of previous archives ...

Страница 60: ... 92 Maximum mean current threshold settings The resulting alarms are displayed in the HMI HMI Measurements Alarms Figure 93 Coil charge alarms Coil Charge Alarm Alarms thresholds can be set during setup on Minimum and maximum coil charge when opening Minimum and maximum coil charge when closing HMI Settings Analog channels Figure 94 Coil charge threshold settings The resulting alarms are displayed...

Страница 61: ...le some modern relays already provide this functionality by continually checking the continuity of the control circuit including the coil this is not always the case especially in older sub stations with older relays With the appropriate sensors installed the TCW continuity monitoring sensor injects a small current in the control line at either side of each coil below the level needed to actuate t...

Страница 62: ...ld be used as the minimum alarm level High level alarm is much less of a concern and can be effectively de activated by using a very high threshold like 500V If this function is not being monitored and no sensor is present then the values should be set as such to avoid any erroneous alarm HMI Settings Analogue channels Figure 98 DC voltage default settings Min Alarm Max Alarm Digital Relay Coil ci...

Страница 63: ...be set as such to avoid any erroneous alarm HMI Settings Analogue channels Figure 100 Coil current and charge default settings Coil charge By looking at the historical data we can determine the minimum and maximum values of the coil currents recorded and the time the coil is energised which should be roughly equal to the reaction time measured We can use them as shown in the table below to calcula...

Страница 64: ...sed as the coils are either open circuit or not and the TCW sensor acts as a relay If this function is not being monitored and no sensor is present then ensure that the system is set as such to avoid any erroneous alarm HMI Settings Operations Monitoring Figure 102 Coil continuity default setting ...

Страница 65: ...tored in a tank to enable several operations The pump motor starts whenever the pressure in the storage tank falls below a certain level When the required pressure is built up again then a contact is triggered and stops the pump motor A single pump and some valves are used to generate the pressure in 3 separate tanks in an IPO CB The pump motor is usually quite large and takes much longer to resto...

Страница 66: ...are the spring rewind times recorded after each closing operation with a minimum and maximum duration threshold An alarm is triggered if the value recorded falls outside these limits Any shortening of the time may indicate a partially broken spring and any lengthening may indicate additional friction or a problem with the motor itself An alarm can also be set when for the cumulative spring rewind ...

Страница 67: ...g more torque or a problem with the motor itself Both the mean average motor current and the maximum motor current peak inrush current are recorded and displayed in the HMI HMI Measurements Last closing results Figure 108 Spring rewind motor current data Rewind current alarm An alarm can be set on the maximum inrush current value of the motor by setting a Max threshold value HMI Settings Analog ch...

Страница 68: ...he HMI and stored for future comparison HMI Measurement Operations charts Spring Via the HMI the user is also able to display the previous curves saved in the CBW3 Figure 111 Drop down list of previous archives In addition the following historical graphs are also available History of mean current value measured History of maximum current value measured History of spring rewinding time measured His...

Страница 69: ...100 These graphs enable users to quickly compare the latest value obtained to historical values previously recorded and graphically visualise any change deviation HMI Measurements Operations charts Spring Figure 112 Operation charts for spring rewind ...

Страница 70: ...sm alarms Alarm thresholds Spring rewind time Data is usually available from the User Manual A possible value could be 25s but it depends on the CB type Cumulative spring rewind motor run time Data is usually available from the motor s maintenance manual A possible value could be 12 000 min 200 hr but it depends on the motor type Peak spring rewind motor current Data is usually available from the ...

Страница 71: ...ressor is needing more time to restore the desired pressure a possible indication of pump problem But the results can be affected if the CB is operated at the same time as the compressor is trying to restore pressure The cumulated pump run time is also displayed so that maintenance of the pump s can be performed when the prescribed number of run time hours has been reached Because the pump motor o...

Страница 72: ...e following graphs are shown to ease the comparison and graphically detect anomalies History of the number of pump operations in the last 24 hours History of the number of CB operations in the last 24 hours History of the total pump run time in the last 24 hours HMI Measurements Pump Figure 117 Historical pump data graphs ...

Страница 73: ...stalling in a retrofit situation the initial value for the pump compressor run time can be entered HMI Settings Pump Figure 119 Pump run time initial value The various alarms can be seen in the HMI HMI Measurements Alarms Figure 120 Pump operation alarms Pump motor current Using a CT the CBW3 is able to measure the initial inrush current used by the compressor pump motor s in order to notice any c...

Страница 74: ...nt is displayed in the HMI HMI Measurements Pump Figure 123 Maximum inrush current Pump motor current alarm An alarm can be set on the maximum inrush current value of the pump motor by setting the Max threshold value HMI Settings Analog channels Figure 124 Pump motor inrush current maximum threshold setting The alarm is displayed when the threshold has been reached HMI Measurement Alarms Figure 12...

Страница 75: ... which of the generic channels 1 to 4 are relevant to display in the pump page HMI Measurement Settings Pump Figure 126 Display of generic channels As an example if we connect the sensors that give us the above mentioned information to generic channels 2 and 3 and we select these 2 channels to be displayed as part of the pump data then we would see the following information in the HMI HMI Measurem...

Страница 76: ...f days so this should be considered Depending on how often the breaker is supposed to operate more than 2 or 3 pump starts per day should be flagged Pump run time 24h Depending on how long the pump cycle takes typically 15 20minutes the pump run time should not exceed 60 minutes per day Cumulative pump motor run time Data is usually available from the motor s maintenance manual A possible value co...

Страница 77: ...CB Watch 3 User Manual v6 3 May 2019 Page 77 of 100 ...

Страница 78: ...f 100 CB OPERATION GRAPHS HMI Graphs Operation Graphs We have already seen that you can view various operation graphs in the web HMI 9 1 1 1 Opening Operation Graphs HMI Measurements Operations charts Opening Figure 129 Operation graphs for opening ...

Страница 79: ...ual v6 3 May 2019 Page 79 of 100 9 1 1 2 Closing Operation Graphs HMI Measurements Operations charts Closing Figure 130 Operation charts for closing Note that the content will depend on the presence of the related sensors ...

Страница 80: ...CB Watch 3 User Manual v6 3 May 2019 Page 80 of 100 9 1 1 3 Spring Rewind Graphs HMI Measurements Operations charts Spring Figure 131 Operation charts for spring rewind ...

Страница 81: ...CB Watch 3 User Manual v6 3 May 2019 Page 81 of 100 9 1 1 4 Pump Motor Graphs HMI Measurements Operations charts Pump Figure 132 Operation charts for pump motor ...

Страница 82: ... A total of 50 graphs is stored in memory over all operation types and the oldest is replaced by the most recent when the buffer memory is full Graph scaling The scale on the graphs can be changed by selecting an area on the graph with the mouse as shown below The scaling will automatically expand Figure 134 Scaling graphs To return to the original scaling position the cursor on one of the points ...

Страница 83: ...types of files open for opening operation data clos for closing operation data sprg for spring rewind data pump for pump operation data Each file shows the date at which the operation occurred and the data was recorded Visualising COMTRADE Files To visualise the file content you will need to Download both the corresponding files cfg and dat into the same location Use a COMTRADE file reader softwar...

Страница 84: ...CB Watch 3 User Manual v6 3 May 2019 Page 84 of 100 Figure 136 Visualising a COMTRADE file ...

Страница 85: ...ent 3x Drive cabinets 1x control cabinet and 3x tank heaters could be a possible use of the 8 sensors By default the temperatures are displayed in degrees centigrade but degrees Fahrenheit can be selected to display in instead HMI Settings Aux temperatures Figure 137 Number of PT100 sensors Each temperature sensor can be given a name to make it easier to identify what temperature is being measured...

Страница 86: ...y mounted away from direct sunlight an underneath the breaker the temperature sensor built into the gas sensor is used as the ambient temperature reference If there are 3x gas sensors then the average of the 3 measurements is used Provided there is a source the information is continuously displayed in the HMI HMI Measurements Sensors Figure 140 Ambient temperature The outside ambient temperature i...

Страница 87: ...stead of using an indirect measurement heater current the CBW3 prefers to monitor the end result of keeping the correct cabinet temperature We are therefore interested in setting a minimum and maximum threshold for the temperature in the cabinet An alarm will be raised if Measured value Maximum threshold Measured value Minimum threshold HMI Settings Aux temperatures Figure 142 Thresholds for measu...

Страница 88: ...nes that may prove helpful in deciding what threshold values to use Alarm summary This table summarises all the alarms that can be set for monitoring the hydraulic pneumatic energy storage mechanism Figure 145 Spring energy storage mechanism alarms Alarm thresholds Ambient temperature Warning alarms could be set if the outside ambient temperature falls very low 45oC or very high 45oC so that any a...

Страница 89: ...equired a very low minimum threshold 100oC and a very high maximum threshold 100oC should be set to ensure that no alarm is ever triggered Relative cabinet temperature To avoid condensation it is usually accepted that the inside of a cabinet should not be much colder than the outside temperature A delta negative of 10oC could be set to warn that the heater is letting the difference in temperature ...

Страница 90: ... Barometric pressure Configuration The name of the value being measured by each channel can be configured by the user to reflect the value monitored The units of the value being measured can also be configured by the user This is done through the HMI The user can also specify in which COMTRADE file the data recorded will be added to Open Close Spring Pump or even Open Close Open Close Spring rewin...

Страница 91: ...gue channels alarm thresholds Any alarm triggered can be seen in the HMI HMI Measurements Alarms Figure 149 Spare analogue channels alarms Alarm summary Data obtained from CBW3 Min Alarm Max Alarm Any analogue sensor voltage or current output 1 Yes Yes Any analogue sensor voltage or current output 2 Yes Yes Any analogue sensor voltage or current output 3 Yes Yes Any analogue sensor voltage or curr...

Страница 92: ...ital protocols are most often used it is available for connection to older SCADA systems Available alarm relays Two dry contact alarm relays K1 and K2 are provided as standard on the base ProWatch module The K2 output is used to provide the state of the CBW3 It is the result of the system s own self checking function It can inform the maintenance service and or supervision system of an internal ma...

Страница 93: ...of the relevant previous sections This example shows the matrix for the gas alarms shown in the example in Figure 150 above HMI Settings Alarms Gas Figure 151 Gas alarm assignments Each monitoring function has its own alarms that can be assigned in a similar manner to one of the 16 relays or K1 by selecting them in the appropriate table in the alarm setup section Each function has its own section ...

Страница 94: ... stay active based on the value recorded during the last operation They can however be cleared manually by Selecting the Clear alarms relay assignment Pressing the Set button There are two alarm clearing buttons One for all the gas related alarms HMI Settings Alarms Gas Figure 153 Clearing gas related alarms One for all the operations related alarms HMI Settings Alarms Operations Figure 154 Cleari...

Страница 95: ... of your system one or several digital communication protocols may be available from Modbus DNP3 IEC 61850 Ed2 The protocols enabled in the configuration are displayed with a tick in HMI System Network Figure 155 Protocols available Please refer to the specific documentation of that protocol for further information ...

Страница 96: ...tom of the page you will find the button to generate the assistance file Press it and wait about 20 seconds for the file to appear underneath HMI System Downloads Figure 157 Remote assistance file The tar file is time and date stamped and can be downloaded by double clicking on it This is the file you need to send to GE if you are asked for the Assistance file Product System Files If we have to ma...

Страница 97: ...CB Watch 3 User Manual v6 3 May 2019 Page 97 of 100 Choose the file by browsing to the location on your laptop Upload the file by pressing the Send button Repeat for the other file if required ...

Страница 98: ...alues 1 per minute Long Term gas data last 500 values 1 per day Operations measurement Feature Value Time horizon Operation 0 3 seconds Motor current 12 seconds Refresh frequency every 400 micro seconds Analogue measurements Accuracy 0 1 of measuring range A D conversion 16 bit Time Accuracy 1 milli second Temperature Accuracy 0 1 deg C PT100 3 wire Data storage Operation data last 50 operations P...

Страница 99: ...CB Watch 3 User Manual v6 3 May 2019 Page 99 of 100 ...

Страница 100: ...ns com Customer Service Centre 24 hours a day 365 days a year T 1 800 361 3652 United States and Canada T 1 514 420 7460 worldwide ge4service ge com GE the GE monogram CB Watch are trademarks of the General Electric Company GE reserves the right to make changes to specifications of products described at any time without notice and without obligation to notify any person of such changes Copyright G...

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