Transformer Loss Parameter Tester
Recommended by Darui Electric
Main Indicators of Transformer Loss Parameter (500V) Tester
1. Input Characteristics
Voltage measurement range: 0～750V wide range.
Current measurement range: 0～80A, all internal automatic range switching.
2. Accuracy
Voltage, current, ±0.2%
Power: ±0.5% (CosΦ＞0.1), ±1.0% (0.02＜CosΦ＜0.1)
3. Operating temperature: -10℃～+40℃
4. Insulation: (1) Insulation resistance between voltage/current input terminals and the case ≥100M?.
(2) The working power input terminal withstands a power frequency of 2kV (effective value) for 1 minute test against the case.
5. Dimensions: 38cm×28cm×15cm
6. Weight: 3kg
Technical Parameters of Transformer Loss Parameter (500V) Tester
■ Voltage (V): Range 500V ± (0.25% of reading + 0.25% of range)
■ Current (A): Range 80A ± (0.25% of reading + 0.25% of range)
■ Power (W): ± (0.25% of reading + 0.25% of range)
■ Power factor: Range 0~1, accuracy ±5 digits
■ Frequency: 40~60Hz, 0.05%
■ Measurement accuracy: 0.5 class
■ Power supply: AC 220V±10%, 50Hz±2%
■ Total power consumption: less than 25W
Precautions
1. Do not touch the metal parts of the test leads during measurement to avoid electric shock.
2. The measurement wiring must be strictly followed according to the manual, otherwise the consequences will be borne by the user.
3. Before testing, carefully check whether the set parameters are correct.
4. Use a power outlet with a ground wire.
5. Do not work under overvoltage or overcurrent conditions.
6. During short-circuit test, the short-circuit on the non-energized side must be good, otherwise it will affect the test results.
7. When performing short-circuit test, if the high-voltage or medium-voltage side bushing is equipped with a ring-type current transformer, the secondary of the current transformer must be short-circuited before the test.
8. The test wiring must be carried out with the tested line grounded to prevent electric shock from induced voltage. All short-circuit, grounding, and lead wires should have sufficient cross-section and must be connected securely. The test organization should be rigorous, and communication should be smooth to ensure the safe and smooth progress of the test work.
Features
1. Uses a 240×128 dot matrix LCD to display three-phase voltage, current, low-voltage side voltage, power, power factor and other parameters simultaneously.
2. Can measure no-load current, no-load loss, short-circuit voltage, and short-circuit loss of various types of transformers.
3. Wide linear range, good reading repeatability, and stable performance.
4. Ensures accurate measurement of power factor from 0.000 to 1.000, especially suitable for detection of low power factor loads.
5. Convenient latching ensures simultaneity of measurement data and ease of operation.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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