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Vanguard TRM-20 / TRM-40 Transformer Resistance Meters

TRM-20 / TRM-40

TRM-20 / TRM-40 Transformer Resistance Meters

The TRM-20 and TRM-40 are Vanguard Instruments' third generation transformer winding resistance meters. The TRM line is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or.

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M2K engineers testing a distribution transformer with Vanguard instruments at Energypac

Overview

The TRM-20 and TRM-40 are Vanguard Instruments' third generation transformer winding resistance meters. The TRM line is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.

the equivalent resistance value at any temperature value. This useful feature allows the user to compare the field readings against the factory

A special test mode allows the TRM to collect data automatically for up to 90 minutes at a 60-second sampling interval (10, 15, 20, and 30 second sampling rates are also available. Duration will vary accordingly). Test data is recorded

Key capabilities

  • Auto discharge circuit for operator safety
  • Demagnetizes transformer after test
  • Selectable test current from 1A to 20A
  • Computer control via RS-232C, USB,
  • Built-in 2.5" wide thermal printer

Specification

Indicative specification for Vanguard TRM-20 / TRM-40 Transformer Resistance Meters

Indicative specification for guidance. Confirm the current manufacturer datasheet for the configuration being quoted.

Typical applications

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