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Vanguard Instruments TRM-20

20A Winding Resistance Meter with Auto Demagnetization

Part NumberIncluded Options
Rent/Lease   Buy Used
VAN-TRM-20/CASE/Transit Case
MSRP: $9,950     Our USED Price: Call     
Catalog Description

Vanguard Instruments TRM-20

 VAN-TRM-20 20A Winding Resistance Meter with Auto Demagnetization

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
2,000 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.

RESISTANCE READING RANGE: 1 micro-ohm to 500 Ohms

ACCURACY: 1 19,999 micro-ohms: +/-0.5% reading, 1 count
20 999 milliohms: +/-1% reading, 1 count
1 -2000 Ohms: +/-1.5% reading, 1 count

TEST CURRENT: 1-20A in 1A increments
TEST VOLTAGE: 60 Vdc charging, 18V DC max during measurement
RESISTANCE CHANNELS: Two static resistance reading channels
PRINTER: Built-in 2.5" wide thermal printer
INTERNAL DATA STORAGE: 100 test records. Each record can contain up to 99
EXTERNAL DATA STORAGE: Up to 999 test records on external USB Flash drive.
LengthWidthHeightShip Wt 
17 " 21 " 9 " 97 lb  
N/A Currently not available for sale used
Need Configuration Assistance? Call our experienced Sales Staff.