TRM-20 Winding Resistance Meter

11 250,00 € tax incl.
  • Auto-discharge circuit for operator safety
  • Demagnetizes transformer after test
  • Selectable test current from 1A to 20A
  • RS-232C, USB, and Bluetooth computer interfaces
  • Built-in thermal printer

    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.

    The TRM-20 features dual resistance-reading input channels that can measure two winding resistances simultaneously (primary and secondary windings of a transformer). It can provide a fast and stable reading of very large transformers by utilizing a 60Vdc power supply. The TRM-20 is capable of outputting a selectable test current from 1A to 20A.

    Since the TRM-20 can accurately measure resistance values from 1 micro-ohm to 500 Ohms, it can be used as micro-ohm meters to measure EHV circuit breaker contact resistance, or for any low resistance measuring application. The TRM-20 can automatically demagnetize the inductive device under test, eliminating the manual task of demagnetizing the transformer core after a resistance test.

TYPE Special-purpose test equipment, portable, micro-ohmmeter
CONTROL Heavy duty keypad: 10 number keys, 6 function keys
SIZE 16.8" wide by 12.6" high by 12.5" deep
WEIGHT Less than 30lbs.
Dual resistance reading channels
RESISTANCE RANGE 1 micro-ohm to 500 ohms
ACCURACY 1-19,999 micro-ohm: ± 0.5% of Reading, ± 1Count
20-999 milliohms: ± 1.0% of Reading, ± 1Count
1-500 ohms: ± 2.0% of Reading, ± 1Count
CURRENT RANGE Auto Ranging, 40 Amperes Max
DISPLAY Backlit LCD, 4 lines by 20 characters
MEMORY Store 48 records in Flash EEPROM, up to 63 readings per record
COMPUTER INTERFACE RS-232C permits test record downloading and diagnostics
PC SOFTWARE Windows® 95/98/2000/NT/XP - based software included
PRINTER Thermal Printer, 2.5-inch
CABLES 3 sets of 50' Test Cables, Ground Cable, Power Cord and Cable Bag
OPERATING POWER 85 to 132 V ac / 200-240 V ac, 50/60 Hz
ENVIRONMENT Operating: -10ºC to 50ºC (15º to +122º F)
Storage: -30ºC to 70ºC (-22º to +158º F)
OPTIONS Shipping Case
WARRANTY One Year Parts & Labor, Post Warranty Service Contract Available

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