Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of transformer on-load tap-changer tester in China. If you're going to wholesale durable transformer on-load tap-changer tester, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
The Transformer On-load Tap-changer Tester (model: NRB562C) functions as a transformer oltc test set, tap changer analyzer, oltc dynamic resistance tester, OLTC Tester, On-load Tap Changer Analyzer, Tap-changer Tester, OLTC Analyzer, Transformer Tap Changer Test Set, and On-load Tap Changer Measurement Device. It supports testing with or without windings, automatically displays transition resistance and time after completion.
Product Parameters
|
Parameter |
Specification |
|
Time range |
0～450 ms |
|
Time resolution |
≤0.1ms |
|
Time accuracy |
≤±(0.1% reading + 1 word) |
|
Resistance range (400mA) |
0.5～40 Ω |
|
Resistance range (1A) |
0.2～20 Ω |
|
Resistance accuracy |
≤±(5% + 0.1Ω) |
|
Power supply |
AC220V |
|
Storage capacity |
1000 groups |
Product Advantages
Color large-screen display shows waveforms and data clearly. U disk storage plus RS232/Bluetooth enables computer/tablet interconnection. Anti-impact and overvoltage protection circuits ensure safety. Power noise filter provides excellent anti-interference. Permanent clock eliminates repeated date/time input.
Main Applications
The Transformer On-load Tap-changer Tester (model: NRB562C) is used for transformer OLTC factory testing, field commissioning, preventive maintenance, fault diagnosis, and transition resistance/ transition time verification in power substations.
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Frequently Asked Questions (FAQ)
Q: What should I do if the test waveform is chaotic and automatic data seems inaccurate?
A: Press the "Modify" button to enter manual adjustment mode. Use cursor keys to adjust four cursor positions on the waveform for each phase, then press "Confirmed" to save the adjusted data.
Q: How do I test a Y-type winding without a neutral point?
A: Set connection mode to "Y without neutral point". Connect yellow/green/black test leads to A/B/C bushings to test A/B phases. Then connect red test lead to C phase and black to A or B phase to test C phase data separately.
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