Comparison chart: equipment for measuring the transformer turns ratio

Amperis Products offers a wide range of equipment for measuring the transformer turns ratio, covering various features as the number of phases, accessories, memory, etc... It will be easy for you to find an equipment suitable for your needs.

All our ATRT and TRI-PHASE devices can perform the turns ratio test according to the method defined by ANSI / IEEE C57.12.90. The measurement range is from 0.8 to 15000 with a high precision, and it can measure the excitation current as well.

Below a summary-table comparing the features:

		ATRT 01 S2	ATRT 01B S2	ATRT 03	ATRT 03A	ATRT 03B	TRI-PHASE
Phase No.	Single-phase	√	√
	Three-phase			√	√	√
	True three-phase						√
Measurement	Turns-ratio	√	√	√	√	√	√
	Excitation current	√	√	√	√	√	√
	Phase angle			√	√	√	√
Input power	100-240V 50/60Hz Input	√	√	√		√	√
	85-264Vac / 110-370 Vdc / 12Vdc Inputs				√
	Rechargeable battery		√		√
Built-in 4.5-inch thermal printer				√	√		√
Transformer identification	67 transformer types defined by ANSI, CEI/IEC, and Australian Std.			√	√	√
Transformer identification	130 transformer types defined by ANSI, CEI/IEC, and Australian Std.						√
Data storage	USB flash drive interface, up to 999 records			√	√	√	√
	Internal test record storage, up to 200 records			√	√	√
	Internal test record storage, up to 112 records						√
	Internal test plans storage, up to 128 records			√	√	√	√
LTC output				OP	OP	OP	√
Computer interfaces	RS-232C	√	√	√	√	√	√
Computer interfaces	USB						√