Related Manuals for Qualitrol OTIWTI AKM345 GEN3
Summary of Contents for Qualitrol OTIWTI AKM345 GEN3
- Page 1 QUALITROL AKM345 GEN3 OTIWTI OTIWTI™ AKM Type 34 Oil Temperature Indicator OTIWTI™ AKM Type 35 Winding Temperature Indicator Document ID: 40-08847-00-Rev001...
- Page 2 In case of conflict between the English version and another language version, the English version takes precedence. ©2021 QUALITROL® Company LLC, an ISO 9001 system certified company. All rights reserved. Information subject to change without notice. All trademarks are properties of their respective companies, as noted herein. 40-08847-00-Rev001.
- Page 3 QUALITROL® manufactures substation 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 equipment, fault recorders, and fault locators. Established in 1945, QUALITROL® produces different types of products on demand, customized to meet unique requirements.
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Page 4: Table Of Contents
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 Table of Contents List of Abbreviations/Acronyms ......................... 6 Introduction ............................... 7 QUALITROL AKM345 GEN3 OTIWTI ......................7 Operation ..............................8 Calibration Check ............................8 Winding Simulation ............................ 8 Switches ..............................8 Remote Output ............................9 MODBUS .............................. - Page 5 QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.3.4 Power ............................... 20 5.3.5 Remote Output ..........................21 5.3.6 Modbus ............................22 Switch Setting ..............................23 Switch Setpoint Adjustment ........................23 Adjustable Differential (option) ....................... 24 Winding Temperature Simulation ........................25 Adjusting the Internal Matching Resistance – TD50 & TD76 ..............26 Using the Internal 5 Amp CT Option –...
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Page 6: List Of Abbreviations/Acronyms
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 1. List of Abbreviations/Acronyms Abbreviation/Acronym Expansion Qualitrol Product Family of Oil and Winding AKM345 Temperature Indicators GEN3 Third Generation Product Oil Temperature Indicator Winding Temperature Indicator Magnetic Blow-Out Contact Winding Hottest Spot Qualitrol... -
Page 7: Introduction
Instruction Manual 40-08847-00-Rev001 2. Introduction 2.1 QUALITROL AKM345 GEN3 OTIWTI The Qualitrol AKM345 GEN3 OTIWTI is the future of oil and winding temperature indication for transformers 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. -
Page 8: Operation
Read the temperature on the device thermometer after 15 minutes If the difference between the temperature indicated by the AKM345 unit and the temperature of the bath is greater than 5°C we recommend contacting Qualitrol for further assistance 2.4 Winding Simulation... -
Page 9: Remote Output
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 The AKM345 GEN3 OTIWTI can be equipped with 2, 4, or 6 Form C contact switches. These switches can be used for alarming and control of cooling equipment. Each switch is independently adjustable across the dial range. Switching accuracy is ±3% of the dial range. -
Page 10: Environmental
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 3.1 Environmental Storage Temperature -50°C to 80°C Ambient Operating Temperature -40°C to 70°C; Optional for -60°C Enclosure protection IP66 General Requirements Per IEC 60076-22-1, section 7.8 Overvoltage category, Pollution degree, Class Category III, Pollution degree 2, Insulation Class 1 3.2 Electrical... -
Page 11: Scada
4. Safety 4.1 General Warnings Operation outside of the intended use shall not be the responsibility of Qualitrol. Refer to the installation manual for mounting details, and adjustment of the switches. DO NOT APPLY HEAT TO THE THERMOMETER SENSOR BULB AT TEMPERATURES WHICH EXCEED THE MAXIMUM RANGE OF THE DIAL. -
Page 12: Capillary Routing
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 4.2 Capillary Routing The capillary tube used on the AKM345 GEN3 is made from a soft copper to allow easy routing of the capillary. If the capillary is kinked or crushed, the unit will be damaged. -
Page 13: Power Connection
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 4.5 Power Connection • Mains GROUND wiring to housing is shown as above in Grounding Terminal figure above, “Neutral” may be above ground potential. • User shall supply a 5 or 10A double pole (or double fuse) time delay overcurrent protector at the MAINS source. - Page 14 QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.1.1.1 Mounting Styles and Dimensions 5.1.1.1.1 Standard Mount 5.1.1.1.2 Universal Mount www.qualitrolcorp.com Page 14 of 34...
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Page 15: Installing The Probe
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.1.1.1.3 Seismic Mount 5.1.2 Installing the Probe 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 15% excess volume after probe is inserted for thermal expansion. - Page 16 QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.1.2.2 Probe Types www.qualitrolcorp.com Page 16 of 34...
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Page 17: Front Cover
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.2 Front Cover The AKM345 GEN3 features a new cover design that allows for the cover to be propped open or removed for ease of access and installation. The cover should not need to be removed unless the unit is being mounted in a cabinet or under a rain/sun shield. -
Page 18: Cover Removal
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.2.2 Cover Removal To remove the front cover, 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 the lid from the enclosure base. -
Page 19: Electrical Connection
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.3 Electrical Connection 5.3.1 Cable Glands The unit can be specified to come equipped with cable glands as required, with all cable glands fitted, or with blanking plugs instead of cable glands. When specified with cable glands as required, the unit will be provided with M20 and M25 cable glands as needed for the other features specified. -
Page 20: Matching Resistance
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.3.3 Matching Resistance To utilize the internal matching resistance of the AKM345 GEN3, you must connect your bushing CT directly to the unit. The CT input for the AKM345 GEN3 is designated on the terminal blocks as follows: •... -
Page 21: Remote Output
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.3.5 Remote Output The AKM345 GEN3 can be equipped with powered outputs: 4-20mA, 2 x 4-20mA, or 4-20mA & 0-5VDC. These outputs are scaled evenly across the specified dial range. The wiring for these remote outputs is designated as follows: •... -
Page 22: Modbus
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 5.3.6 Modbus The AKM345 GEN3 can be specified to include RS-485 Modbus communication. Modbus communication can only be specified with a powered remote output. Further information is available in section 9 of this manual. -
Page 23: Switch Setting
As an option, the switches can be specified for high DC current applications or with gold contacts for intrinsic environments. Qualitrol does not recommend setting more than 2 switches at the same setpoint, as this can reduce device accuracy. 6.1 Switch Setpoint Adjustment... -
Page 24: Adjustable Differential (Option)
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 6.2 Adjustable Differential (option) An option on the AKM345 GEN3 is to have adjustable switching differentials. The procedure for adjusting the switching differential is as follows: Step 1) Adjust the alarm set point as described above. -
Page 25: Winding Temperature Simulation
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 7. Winding Temperature Simulation The AKM345 GEN3 contains a method to simulate the temperature of a winding by indirect measurement referred to as thermal image. This is a frequently used simulation method that measures top oil temperature and biases the winding temperature indicator reading proportional to transformer load to indicate winding temperature. -
Page 26: Adjusting The Internal Matching Resistance - Td50 & Td76
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 7.1 Adjusting the Internal Matching Resistance – TD50 & TD76 The procedure for adjusting the TD50 or TD76 internal matching resistance is as follows: Step 1) Check or calculate the secondary current (I ) in Amps from your bushing current transformer (BCT) at 100 % transformer load. -
Page 27: Using The Internal 5 Amp Ct Option - Td50(5Amp)
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 7.2 Using the Internal 5 Amp CT Option – TD50(5AMP) 7.2.1 Background The AKM345 GEN3 TD50(5AMP) option allows for the input of up to 5 Amp winding temperature simulation current without the expense or additional wiring required by an external matching unit. It is available with up to 6 switches with some limitations on additional features. - Page 28 QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 Step 3) Jumper between one pin of the " " onne tor and one pin of the “ ” onne tor and onne t an ammeter between the remaining two pins, as shown.
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Page 29: Dual Gradient (Option) - Td50(X2) & Td76(X2)
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 7.3 Dual Gradient (option) – TD50(X2) & TD76(X2) 7.3.1 Background The AKM345 GEN3 dual gradient option allows for setting two separate winding simulations in the same Winding Temperature Indicator (WTI). The CT input is provided with two independently adjustable potentiometers for determining the heater current. -
Page 30: External Matching Units
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 7.4 External Matching Units When an internal matching resistance is not specified, there is the option to use a 1A or 5A external matching resistance unit depending on the magnitude of the current from the bushing current transformer. -
Page 31: Modbus Communications (Option)
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 8. MODBUS Communications (option) The AKM345 GEN3 has an option to include RS-485 Modbus communication. This section describes how to implement and utilize the functions of the MODBUS protocol. 8.1 MODBUS Default Configurations The default configuration for MODBUS is as follows: •... -
Page 32: Input Registers
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 8.3.2 Input Registers Function Code: 04 Type Operations Register Notes (R/W) 30001 16bit unsigned int Alarm Count (Total alarms triggered till date) 30002, 30003 float Transformer Temperature Alarm Record Number Type LSB: Alarm... -
Page 33: Holding Registers
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 Alarm Status 10002 Discrete Value=1 Alarm Value=0 if Alarm is OFF Alarm Status 10008 Discrete Value=1 Alarm Value=0 if Alarm is OFF 8.3.4 Holding Registers Function Code: 03, 06, 16 Operations Register Type... -
Page 34: Modbus Notes
QUALITROL AKM345 GEN3 OTIWTI Instruction Manual 40-08847-00-Rev001 [ Note: Device will set the new system time after the MSB register is written. Writing Only LSB register will not change the system time in the device. ] 40024 16Bit unsigned int Reserved 8.3.5...