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NR4400 series zinc oxide arrester characteristic tester
Used to test AC characteristics such as the resistive leakage current of zinc oxide arresters. The NR4400 series zinc oxide arrester characteristic tester has successfully solved the problem of data offset caused by phase-to-phase interference in the field test. It can detect the AC characteristics of the arrester in both live operation and power failure detection. It is in the power system prevention test. The essential instrument.
◆ Good stability and repeatability: In the field test of 500kV power station, the resistance current value jumps only ±1uA. Due to the extensive use of various high-precision, low-temperature coefficient components inside the instrument, the test data has excellent repeatability, which provides a good basis for the longitudinal comparison of historical data;
◆ Anti-interphase interference: This instrument adopts special anti-interference measures, which can effectively eliminate the interphase interference between phase B and phase A and C, and successfully solve the problem of on-site resistive current A phase is too large and C phase is too small;
◆ Anti-harmonic interference: The use of sophisticated mathematical models including Fourier's algorithm can effectively eliminate the influence of grid harmonics on the test results;
◆ Complete test items, resistive current, capacitive current, full leakage current, phase angle, resistive current peak value, full current peak value, third harmonic current, fifth harmonic current, fundamental active power consumption, harmonic active power It is easy to operate and carry around.
◆ Test items and test scope:
(1) Leakage full current: 0～10mA (2) Resistive current: 0～10mA
(3) Capacitive current: 0～10mA (4) Phase angle: 0～360 degrees
(5) Peak value of resistive current: 0～15mA (6) Peak value of full current: 0～15mA
(7) Third harmonic current: 0～10mA (8) Fifth harmonic current: 0～10mA
(9) Fundamental active power consumption: 0～9999W (10) Harmonic active power consumption: 0～9999W
◆ Reference voltage input range: AC20V～120V
◆ Phase correction angle input range: 0～360 degrees
◆ Test accuracy: +(2%+1 words)
◆ Dimensions: 350 mm *280 mm *160 mm
◆ Instrument weight: 4 kg
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