Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of transformer ratio tester in China. If you're going to wholesale durable transformer ratio tester, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
The transformer ratio tester (model: NRB300) functions as a transformer turns ratio test set, transformer ratio test kit, Transformer Ratio and Phase Angle Tester, Three-Phase Transformer Turns Ratio Tester, and Transformer Ratio Test Set. It features fully automatic measurement without requiring any parameter settings for three-phase ratio, winding wiring, and group label testing.
Product Parameters
|
Parameter |
Specification |
|
Ratio range |
0.8～10000 |
|
Accuracy 0.8−1000 |
0.1% |
|
Accuracy (1000-2000) |
0.2% |
|
Accuracy (2000-10000) |
0.5% |
|
Test voltage |
AC20V～230V |
|
Operating temperature |
-10℃～40℃ |
|
Humidity |
10%～85% |
|
Weight |
6kg |
Product Advantages
Fully automatic measurement requires only one button press. Automatic tracking of on-load tap positions eliminates repeated parameter input. Quantitative overload and over-voltage protection ensure safety. Built-in power-down memory stores 160 records with micro-printer. RS-232 interface enables computer communication.
Main Applications
The transformer ratio tester (model: NRB300) is used for three-phase and single-phase transformer ratio testing, winding connection verification, group label identification, on-load tap-changer position tracking, and PT (voltage transformer) testing in manufacturing and field commissioning.
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Frequently Asked Questions (FAQ)
Q: How do I test a transformer with an unknown connection group?
A: Use the "3Φ Auto Test" or "Vector ID" function. No parameters need to be set. The instrument automatically measures ratio, determines winding connection, and identifies the group label.
Q: Can this tester measure Z-type (ZN) transformers?
A: Yes. Select "Z-type" mode in the menu for ZN/y or ZN/d connections. Standard mode is for Y/y, Y/d, D/y, and D/d transformers.
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