Qualitrol OTIWTI AKM345 GEN3 Instruction Manual Download Page 6 | Manualshive

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QUALITROL AKM345 GEN3 OTIWTI

TM

Instruction Manual

40-08847-00-Rev001

www.qualitrolcorp.com

Page 6 of 34

1.

List of Abbreviations/Acronyms

Abbreviation/Acronym

Expansion

AKM345

Qualitrol Product Family of Oil and Winding
Temperature Indicators

GEN3

Third Generation Product

OTI

Oil Temperature Indicator

WTI

Winding Temperature Indicator

MBO

Magnetic Blow-Out Contact

WHS

Winding Hottest Spot

OTIWTI

Qualitrol Trademarked Oil and Winding
Temperature Indicators

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Summary of Contents for OTIWTI AKM345 GEN3

Page 1: ...QUALITROL AKM345 GEN3 OTIWTITM OTIWTI AKM Type 34 Oil Temperature Indicator OTIWTI AKM Type 35 Winding Temperature Indicator Document ID 40 08847 00 Rev001...

Page 2: ...ied is provided Qualitrol disclaims any responsibility or liability for any direct or indirect damages resulting from the use of the information in this manual or products described in it Mention of a...

Page 3: ...and transformer monitoring and protection devices used by electric utilities and OEM manufacturing companies It is the global leader in sales and installations of transformer asset protection equipme...

Page 4: ...ns 9 3 1 Environmental 10 3 2 Electrical 10 3 3 Mechanical 10 3 4 SCADA 11 4 Safety 11 4 1 General Warnings 11 4 2 Capillary Routing 12 4 3 Switch Wiring 12 4 4 Electrical Connection 12 4 5 Power Conn...

Page 5: ...he Internal 5 Amp CT Option TD50 5AMP 27 7 2 1 Background 27 7 2 2 Setting the Matching Resistance 27 7 3 Dual Gradient option TD50 X2 TD76 X2 29 7 3 1 Background 29 7 3 2 Wiring Recommendations 29 7...

Page 6: ...cronyms Abbreviation Acronym Expansion AKM345 Qualitrol Product Family of Oil and Winding Temperature Indicators GEN3 Third Generation Product OTI Oil Temperature Indicator WTI Winding Temperature Ind...

Page 7: ...rs of all classes The GEN3 is a world class robust feature packed temperature indicator designed and manufactured for long and trouble free operation in all conditions The AKM345 GEN3 OTIWTITM is a re...

Page 8: ...to 100 C o note the minimum volume of water or oil should be 5 liters Stir the contents of the oil water bath to ensure even temperature distribution and check that the temperature of the bath is 100...

Page 9: ...put The AKM345 GEN3 OTIWTITM can be equipped with various remote outputs for connecting to a SCADA or monitoring system Powered outputs include a 4 20mA 2 x 4 20mA or 4 20mA 0 5VDC outputs These outpu...

Page 10: ...dard Switch Rating 250V ac 15A resistive or 7ms inductive Standard Switch Rating 125V dc 0 75A resistive 0 4A 7ms inductive Standard Switch Rating 250V dc 0 3A resistive 0 2A 7ms inductive MBO Switch...

Page 11: ...1 80 to 110 of rated Optional Power Supply Dielectric Isolation MAINS port 2000 Vac to Ground for 60 seconds Optional Power Supply fusing Internal 5 x 20 mm T2A 250V Optional Power Supply environmenta...

Page 12: ...For installations that are switching voltages higher than 24V the AKM345 GEN3 must be grounded to the transformer or control cabinet using 1 5mm2 4mm2 copper wire 16AWG 10AWG with a ring terminal and...

Page 13: ...or possible damage from transport or handling Do not carry the instrument by the capillary Do not twist the capillary when unwinding it or bend too sharply The minimum bend radius is 38mm 1 5 Clamp it...

Page 14: ...QUALITROL AKM345 GEN3 OTIWTITM Instruction Manual 40 08847 00 Rev001 www qualitrolcorp com Page 14 of 34 5 1 1 1 Mounting Styles and Dimensions 5 1 1 1 1 Standard Mount 5 1 1 1 2 Universal Mount...

Page 15: ...5 1 2 1 Pocket Well Installation The AKM345 GEN3 probe is designed to be installed in a pocket well The pocket well can be of dry type or oil filled NOTE If using an oil filled well be sure to leave...

Page 16: ...QUALITROL AKM345 GEN3 OTIWTITM Instruction Manual 40 08847 00 Rev001 www qualitrolcorp com Page 16 of 34 5 1 2 2 Probe Types...

Page 17: ...o be removed unless the unit is being mounted in a cabinet or under a rain sun shield 5 2 1 Opening and propping Perform the following steps to open and prop open the front cover Step 1 Loosen the two...

Page 18: ...er perform the following instructions Step 1 Loosen two of the top M5 captive screws DO NOT remove screws from hinge Step 2 While holding the lid loosen two of the bottom M5 captive screws to release...

Page 19: ...be provided with M20 and M25 cable glands as needed for the other features specified i e of switches remote outputs etc and blanking plugs in unused positions When specified with all cable glands fit...

Page 20: ...ry matching resistance applicable to TD50 TD76 and TD50 5A 56 57 secondary matching resistance applicable to TD50 X2 and TD76 X2 NOTE terminal block arrangement may differ depending on other options s...

Page 21: ...74 Output 2 75 Output Screen NOTE terminal block arrangement may differ depending on other options selected but terminal designation will remain the same Powered Remote Output Wiring Example An additi...

Page 22: ...us communication can only be specified with a powered remote output Further information is available in section 9 of this manual The wiring for the RS 485 Modbus is designated as follows 81 RxTx Groun...

Page 23: ...the same setpoint as this can reduce device accuracy 6 1 Switch Setpoint Adjustment The procedure for adjusting each switch setpoint is as follows Step 1 Open the unit as noted in section 5 2 1 Step 2...

Page 24: ...h scale plate fully clockwise At this point the differential will be set at 5 C When turned fully counterclockwise the differential is set at 25 C Step 3 Pull down the test lever located on the right...

Page 25: ...probe to measure top oil temperature an internal heating element to provide the winding temperature bias a matching resistance to adjust the current supplied to the heating element and the current pro...

Page 26: ...in Ohms using the CT current and temperature gradient as inputs to the graph Take note of this value Step 4 Connect a multi meter set to measure resistance to terminals 5 5 inside the Winding Temperat...

Page 27: ...Method A Step 1 Calculate the Is in Amps from your BCT at 100 transformer load Use the Is from the BCT as an input to the internal in the W KM 5 and al ulate the output urrent using a ratio of 5 to 2...

Page 28: ...fore disconnecting the ammeter and jumper the secondary leads must always be connected in circuit or shorted when the CT is powered Step 5 Using the measured secondary current re calculate the desired...

Page 29: ...ining the heater current Switching between the heater currents is performed externally from the WTI 7 3 2 Wiring Recommendations The potentiometers are wired to the 56 and 57 terminal block positions...

Page 30: ...matching resistance current output is connected to terminals 5 5 on the AKM345 GEN3 Use the below Guideline for Adjustment of Heating Current with External Matching Unit to determine the magnitude of...

Page 31: ...maximum of 100 temperature out of range events Each event is comprised of 4 MODBUS registers The event start Address is 30004 The client can read maximum 25 events in a single MODBUS query The buffer...

Page 32: ...er temperature 30006 30007 R 32bit unsigned int Alarm Record 1 Trigger time Epoch Time in UTC 30512 R Alarm Record 128 Number and Type LSB Alarm number 1 to 8 MSB Alarm Type 0 Under Temp Alarm 1 Over...

Page 33: ...Slave ID 40003 R W 16Bit unsigned int Modbus Parity 40004 R W 32Bit unsigned int Modbus baud rate LSB Note Device will set the new baud rate after the MSB register is written Writing Only LSB register...

Page 34: ...ot done If the temperature value goes 2 C or more down below the dial lower range the application will display temperature as 999 C If the temperature value goes 2 C or more above the dial upper range...

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