■ Functional features
▲ three-phase short circuit impedance measurement: display three-phase voltage, current, power; Short circuit impedance (Zk), short circuit reactance (Xk), short circuit inductance (Lk), short circuit impedance voltage (Zke), automatically calculate the transformer converted to rated temperature, rated current impedance voltage percentage, and the error percentage with the nameplate impedance.
▲ Single-phase short-circuit impedance measurement: in addition to measuring single-phase transformer short-circuit impedance, and the percentage of impedance error of the nameplate, but also measuring transformer impedance, reactance, resistance, inductance values, convenient for users to compare data.
▲ Zero sequence impedance measurement: zero sequence impedance measurement is suitable for high voltage side star wiring with neutral point transformer, instrument can record zero sequence impedance, zero sequence reactance, zero sequence inductance, impedance Angle, zero sequence resistance.
▲ Load loss test: with three-phase transformer low voltage equivalent load test function, compare each single phase of the load current, load loss changes and symmetry to judge the performance of the transformer.
▲ No-load loss test: three-phase transformer no-load test function, through the analysis and comparison of the no-load loss of each phase, observe the no-load loss in the distribution of each phase iron core, found that there are no local defects in the winding and iron core magnetic circuit, determine whether the structure of the transformer core is loose. It is an auxiliary method to judge whether the product is qualified or not, and also an effective method to find faults.
▲ In the instrument allowed within the measurement range can be directly measured, beyond the measurement range can be connected to the external voltage transformer, the instrument can set the external voltage transformer ratio, directly display the applied voltage value.
▲ The instrument adopts large screen color high resolution touch LCD, Chinese menu, Chinese prompt, easy to operate.
▲ The instrument is equipped with 232 interface, can be expanded function, own printer, can print display data.
▲ Built-in power-off memory, can store 500 groups of measurement data, with U disk interface for accessing test data.
■ Technical parameters
▲ Basic range
Voltage input: measuring range measurement error: 1 v ~ 660 v + (reading by 0.2% plus or minus 0.05% (range)
Current input: 1 ma ~ 110 a measuring range measurement error: plus or minus (reading by 0.2% plus or minus 0.05% (range)
Power: cos Φ > 0.1 measurement error: plus or minus (reading by 0.5% plus or minus 0.05% (range)
0.02 < cos Φ < 0.1 measurement error: plus or minus (reading by 1.0% plus or minus 0.05% (range)
Accuracy of frequency measurement: 45 ~ 65 (Hz) : + / - 0.003 Hz
Phase measurement: 0.00° ~ 360° Accuracy: ±0.1°
Short circuit impedance: 0 ~ 100% measurement accuracy: ±0.5
Instrument display: 5 digits
▲ Expand the range
The voltage and current can be expanded to any value required by the transformer, and other parameters can be adjusted automatically according to the transformer's multiplier
