Vanguard Instruments | A Doble company
TRM-203/TRM-403 (20A / 40A, 3 Channels, Transformer resistance meters with auto-demagnetization capability)
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- TRM-203/TRM-403
- : 20A / 40A, 3 Channels, Transformer resistance meters with auto-demagnetization capability
The TRM-203 and TRM-403 are three phase transformer winding resistance meters 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-203 and TRM-403 can provide a fast and stable reading of very large transformers by utilizing a 60Vdc power supply.
The TRM-203 is capable of outputting a selectable test current from 1A to 20A while the TRM-403‘s test current is selectable from 1A to 40A.
Since both units can accurately measure resistance from 1 micro-ohm to 500 Ohms (up to 2000 Ohms for the TRM-203), they can be used as micro-ohm meters to measure EHV circuit breaker contact resistance, or for any low resistance measuring application.
Documentation
- Model TRM-203/TRM-403 User Manual
- Download PDF(4KB)*
- Model TRM-203/TRM-403 Data Sheet
- Download PDF(756KB)*
