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Transformer winding resistance ohmmeters

Transformer insulation resistance deterioration is one of the most common causes of transformer failure: a failing transformer is a costly replacement in an electrical system with the potential for a long downtime. If you fail to maintain your transformer with regular insulation resistance testing (as can be carried out by the Transformer Ohmmeter (MTO) series of transformer test equipment) then it’s likely to fail before reaching its maximum operating life. Adiradh Energy offering Transformer  winding resistance ohmmeters models MTO250,MTO210, MTO106  ,MTO300,MTO330 and LTC335 in India

MTO250 – 50 A Transformer Ohmmeter

MTO250 Transformer ohmmeter is a line-operated, field-portable instrument designed specifically to measure the resistance of all types of magnetic windings safely and accurately. It tests transformers, shunt reactors, rotating machine windings and performs low resistance measurements on connections, contacts and control circuits. The dual set of potential inputs enables the resistance measurement of either two primary, two secondary windings, or of a primary plus a secondary winding simultaneously. Transformer  winding resistance ohmmeters  have dual reading, dual injection characteristic, is a highly efficient method of completing tests in a timely manner.

50 A TRANSFORMER OHMMETER

MTO250-50 A TRANSFORMER OHMMETER

MTO250 Features

  • Capable of testing transformers up to 1000 MVA
  • DC test current up to 50 A maximum
  • Integrated demagnetisation feature
  • Computer control and internal data storage
  • Validates proper operation of on-load tap-changers
  • Protected against accidental current lead disconnection (through potential leads)

Transformer  winding resistance ohmmeter MTO250 Typical applications

MTO250 Transformer Ohmmeter in India  is used to:n  Perform field testing of CT, PT, power transformer windings and their associated tap changers, and motors/generators.n  Verify factory winding resistance test results.n  Perform factory heat run tests.n  Diagnose and pinpoint problems such as the presence of defects in transformers, such as loose connections, and poor tap changer operation.n  To validate proper “make-before-break” operation of  load tap-changers (LTC).

Features and benefits of Transformer  winding resistance ohmmeter MTO250

  • 50 amp test current reduces test time on high current secondary windings by up to 10 times when compared to traditional 10A units.
  • Internal data storage with nine internal sets (groups) of results, allowing for easier organization while in the field.
  • Two channel digital displays allows for testing two windings at a time, improving traditional test time by 50% or more.
  • Computer-aided test form guides operator through connections and tests for all single- and three-phase transformers via PC control or data download.
  • Checks the contact and timing health of on-load tap changers.
  • Patented universal kelvin clamps, with 4 in. (100 mm) adjustable jaws are available, eliminating the need for multiple types of lead clips. Each kelvin clamp also includes banana plugs for use of external probes for testing on terminal blocks.
  • Built-in safety discharge circuit safely discharges the specimen when test is completed, if lead accidentally disconnects, or if power is lost.
  • Automated “heat run” testing and report via PowerDB software.

Adiradh energy offering  Transformer  winding resistance ohmmeters MTO250 in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City ; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for Transformer Winding resistance meter 50A Megger MTO250 in India Download

MTO210 Transformer ohmmeter

MTO210 transformer ohmmeter is a line-operated, field-portable instrument designed specifically to measure the dc resistance of all types of magnetic windings safely and accurately. It can test transformers and rotating machine windings and perform low-current resistance measurements on connections, contacts and control circuits. The Transformer Ohmmeter is extremely useful when testing the windings and contact resistance of tap-changers with “make-before-break” contacts and voltage regulators. Transformer  winding resistance ohmmeter action will check for pitted or misaligned contacts as the instrument will give an indication if either condition occurs.

TRANSFORMER OHMMETER

MTO210 TRANSFORMER OHMMETER

MTO210 Features

  • Direct 2-channel digital reading (1 µΩ to 2000 Ω)
  • DC test current up to 10 A maximum
  • 25% measurement accuracy
  • Integrated demagnetization feature
  • Tests operation of on-load tap-changers
  • Very fast auto safety discharge circuit

Transformer  winding resistance ohmmeter MTO210 Applications

  • To verify factory test readings.
  • As part of a regular maintenance program.
  • To help locate the presence of defects in transformers, such as loose connections.
  • To check the “make-before-break” operation of on-load tap-changers.

Transformer  winding resistance ohmmeter MTO210 Features and benefits

  • Direct 2-channel digital reading allows for testing two windings at a time.
  • Very fast discharge time.
  • High-contrast, large alphanumeric displays can be seen in bright sunlight.
  • User-selectable maximum current range ensures protection of small transformers.
  • Beacon drive circuit is provided for use with optional beacon strobe light.
  • Built-in demagnetization circuitry allows the operator to de-magnetize the transformer core upon completion of resistance testing, or as a stand-alone feature before SFRA testing or when the transformer is put back in service.
  • The MTO210 in India allows for test of transformers with on-load tap-changers and provides a “break-before-make” indicator, in the event of any discontinuity.
  • For those users who choose to create an external interlock safety perimeter, a safety interlock circuit is
  • Remote trigger switch is also provided for testing transformers with tap-changers.
  • Internal flash memory allows for mass storage of dataset records, for later recall, printing, and analysis.
  • Ruggedized clamps, with 4 inch (100 mm) jaws, are provided eliminating the need for bushing adapters.
  • Kelvin clamps/cables (optional) for easy connection to the transformer
  • Compatible with PowerDB software package.
  • Built-in discharge circuit safely discharges the specimen when test is completed, if lead accidentally disconnects,  or if power is lost.
  • Output RS232 serial port is provided for optional printing of results and/or data analysis on a PC.
  • Detachable lid for ease of use.
  • Unit can be operated while in transit case.
  • Leads can stay connected while in transit case

Adiradh energy offering  Transformer  winding resistance ohmmeters MTO210 in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City ; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for Transformer Ohmmeter 10A Megger MTO210 in India Download

MTO106-Transformer Ohmmeter 

MTO106 transformer ohmmeter is an easy-to-use, line-operated instrument specifically designed for safe and accurate field measurement of winding resistance in smaller transmission and distribution transformers. It has dual channels with a measurement range and accuracy suited to provide accurate information about the vast majority of power transformers, reactors and instrument transformers. The test current can be manually set in five different ranges to fit transformers of various sizes.Transformer  winding resistance ohmmeter is exceedingly simple to use, which minimises the need to train users. It has a single selector switch for test current and a single button to activate the test cycle.

TRANSFORMER OHMMETER

MTO106-TRANSFORMER OHMMETER

Transformer  winding resistance ohmmeter MTO106 Features

  • Entry level transformer ohmmeter
  • 2 channels with max 6 A current output
  • ±0.25% measurement accuracy
  • 48 V test voltage for fast saturation of transformers
  • Multimeter type operation, intuitive and fast
  • Safety through automatic, passive discharge circuitry
  • True portability – compact size and low weight

Transformer  winding resistance ohmmeter MTO106 Applications

MTO106 in India  is mainly intended for field measurements of smaller  transmission and distribution transformers:

  • To verify factory test readings
  • As part of a regular maintenance program
  • To help locate the presence of defects in transformers such as increased contact resistance in terminal connections and tap  changers
  • The instrument can also be used for general resistance measurements including: control wiring, voltage regulators, motors, generators and  all types of connections.

Adiradh energy offering  Transformer  winding resistance ohmmeters MTO106  in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City ; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for Transformer Ohmmeter 6A Megger MTO106 in India Download

MTO300 and MTO330 Automated six-winding transformer ohmmeter

MTO 300 series delivers full eight-terminal/six-winding resistance measurement capability. It is designed to save time for the user by testing all normal 6 windings without having to disconnect and reconnect leads during testing. The MTO3xx series also shares the Megger TTR300 series lead set. Users who test both turns ratio and winding resistance can save time and money since only one lead set is needed to connect to the transformer. MTO3XX series in india consists of two models MTP300 via remote controlled via Laptop and MTO330A is equipped with an industrial grade, 12-in. touch controller.

AUTOMATED SIX-WINDING TRANSFORMER OHMMETER

MTO300 and MTO330 AUTOMATED SIX-WINDING TRANSFORMER OHMMETER

Transformer  winding resistance ohmmeter MTO300 and MTO330 Features

  • Automated 8-terminal/6-winding measurement capability
  • Simultaneous win
  • ding magnetization
  • Tests operation of on-load tap-changers
  • Built-in auto-demagnetization feature
  • Automatic discharge
  • Power DB software (MTO330)

Transformer  winding resistance ohmmeter MTO300 and MTO330 Applications

  • Verify factory test readings.
  • Help locate the presence of defects in transformers such as increased contact resistance in terminal connections and tap-changers.
  • Check the operation of on-load tap changers

Transformer  winding resistance ohmmeter MTO300and MTO330 Features and benefits

  • Faster testing with one-time connection principle, measures all phases and windings without disconnecting or reconnecting
  • One clamp per designated bushing” concept significantly reduces chance of operator error in making lead set connections.
  • Automated eight-terminal/six-winding measurement capability saves time and eliminates the need for external jumper cables.
  • Interchangeable lead set with the Megger TTR300 series of 3-phase turns ratio instruments saves time and money.
  • DC test current up to 10 A.
  • Built-in discharge circuit safely discharges the specimen when test is completed, if lead accidentally disconnects, or if power is lost.
  • Built-in demagnetization circuitry allows the operator to de-magnetize the transformer core upon completion of resistance testing, or as a stand-alone feature before SFRA testing or when
  • the transformer is put back in service.
  • Custom PowerDB form for production heat-run (interval) testing. PowerDB software allows for data analysis and trending while in the field without the use of an external computer.
  • The user can easily recall transformer set ups from a custom-settings menu with PowerDB.
  • PC interface via USB for remote control operation and downloading of test results for ease of use

Adiradh energy offering  Transformer  winding resistance ohmmeters  MTO300 and MTO330 in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City ; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for Transformer  winding resistance ohmmeters  MTO300 and MTO330 Download

LTC135 Load Tap Changer Testing Power supply

LTC135 is an accessory for circuit breaker analyzers to test Load Tap Changers where it delivers test currents for the measurements.The load tap changer is the only moving part connected to the transformer windings. Taking a transformer off the system to investigate an internal problem with a tap changer is an expensive exercise; therefore it is in every utility’s interest to carry out condition assessments of their tap changers to help detect developing faults at an early stage.LTC135 is designed to be used together with the following Megger  Instruments: ▪EGIL ▪TM1600/MA61 ▪ TM1700 series▪TM1800 Together with the circuit-breaker analyzer (CBA) it becomes a a test setup for performing dynamic measurements on load tap-changers. The unit can also be used for winding resistance measurements and other applications where a constant DC current test signal is requested.

Load Tap Changer Testing Power Supply

LTC135 Load Tap Changer Testing Power Supply

LTC135 features

  • Winding Resistance Measurement
  • Dynamic Resistance Measurement▪
  • Switch sequence timing
  • Transition/resistor measurement

Adiradh energy offering  Load tap changer  testing power supply LTC335 in India; Hyderabad; Visakhapatnam; Vijayawada; Chennai; Puducherry; Trichy; Coimbatore; Hosur; Bangalore; Hubli; Mysore; Cochin; Kolkata; Pune; Goa; Mumbai; Thane; Kanpur; Jaipur; Nagpur; Delhi; Noida; Gurugam; Bhopal; Vadodara; Ahmedabad; Chandigarh; Chandigarh; Tata Nagar; Raipur; Rudrapur;; Durgapur; Kharagpur; Raigarh; Bhilai;Angul; Haldia; Jabalpur; Indore; Jamshedpur; Rajahmundry; Bokaro Steel City; Salem; Kochi; Rourkela; Ahmedabad ;Jamnagar; Bharuch; Sri City ; Nashik; Haridwar; Mathura; Aurangabad; Bhubaneswar and other cities

Brochure for Load Tap Changer Testing Power Supply LTC135 Download