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Transformer Winding Resistance Meters

       

TRM-40

Transformer Winding Resistance Meter

  
       
Part Number(s)
9061-UC
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The TRM-40 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-40 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.
  • Auto-discharge circuit for operator safety
  • Demagnetizes transformer after test
  • Selectable test current from 1A to 40A
  • RS-232C, USB, and Bluetooth computer interfaces
  • Built-in thermal printer
       

TRM-20

Transformer Winding Resistance Meter

  
       
Part Number(s)
9007-UC
View Full Specs

The TRM-20 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-20 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.
  • Auto-discharge circuit for operator safety
  • Demagnetizes transformer after test
  • Selectable test current from 1A to 25A
  • RS-232C, USB, and Bluetooth computer interfaces
  • Built-in thermal printer
       

TRM-203

Transformer Resistance Meter

  
       
Part Number(s)
9060-UC
View Full Specs

The TRM-203 is a  three phase transformer winding resistance meter that allows the user to connect all test cables to the transformer bushings. The unit will then measure the transformer resistance value for each of the phases without the need to disconnect and reconnect cables for each phase. The TRM-203 can provide a fast and stable reading of very large transformers by utilizing a 60Vdc power supply. It is capable of outputting a selectable test current from 1A to 25A.
  • Perform three phase test on a transformer without the need to switch cables
  • Can provide individual Delta winding resistance values
  • Can provide individual Wye (with no neutral) winding resistance values
  • Demagnetize transformer after test
  • Selectable test current from 1A to 25A
  • Computer control via RS-232C, USB, or Bluetooth interface
  • Built-in 2.5" wide thermal printer
       

TRM-403

Transformer Resistance Meter

  
       
Part Number(s)
9006-UC
View Full Specs

The TRM-403 is a  three phase transformer winding resistance meter that allow the user to connect all test cables to the transformer bushings. The unit will then measure the transformer resistance value for each of the phases without the need to disconnect and reconnect cables for each phase. The TRM-403 can provide a fast and stable reading of very large transformers by utilizing a 60Vdc power supply. It is capable of outputting a selectable test current from 1A to 40A.
  • Perform three phase test on a transformer without the need to switch cables
  • Can provide individual Delta winding resistance values
  • Can provide individual Wye (with no neutral) winding resistance values
  • Demagnetize transformer after test
  • Selectable test current from 1A to 40A
  • Computer control via RS-232C, USB, or Bluetooth interface
  • Built-in 2.5" wide thermal printer
       

TSB

Trip Saver Box

  
       
Part Number(s)
9062-UC
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The Vanguard TSB can be used with a Vanguard ATRT-03 or TRF series turns ratio tester to perform transformer turns ratio tests using the same cable set provided with the TRM-203/403. Using the TSB, there is no need to connect and reconnect cables from the transformer after the initial connections are made. The user can conveniently perform resistance tests using the TRM-203/403 and turns ratio tests using an ATRT-03 or TRF instrument without having to make trips to the transformer to connect and disconnect cables.
       

WRM-10P S2

Winding Resistance Ohmmeter

  
       
Part Number(s)
9137-UC [110V]
9138-UC [220V]
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The WRM-10P S2 is Vanguard's second generation lightweight winding resistance meter designed to accurately measure the winding resistance of highly inductive power transformers. The unit’s dual resistance-reading input channels can measure two winding resistances simultaneously, and four-wire (Kelvin) connections provide high accuracy and require no lead compensation. The WRM-10P S2 provides stable resistance readings of very large transformers by utilizing a 36Vdc power supply capable of outputting up to 10 Amperes.
  • Auto discharge circuit for operator safety
  • Auto current ranging from 10 mA to 10 A
  • Digital resistance reading from 1 micro-ohm to 2,000 ohms
  • Stores 100 records (up to 64 readings each)
  • Built in 2.5" wide thermal printer
  • Weighs less than 28 lbs.