The metal oxide arrester tester is used for the measurement and analysis of metal oxide arrester [MOA] leakage. It is mainly used for measuring the resistive current to analyze the degree of zinc oxide aging and damp. The field charged test shall conform to Electric Power Industry Standard of the People's Republic of China DL474.5-92 Guide for Insulation Test on Site - Lightning Arrester Tests. The metal oxide arrester tester can be also used for factory and acceptance tests.
Zinc oxide arrester tester Technical Indexes:
Range of reference voltage input (peak): 10V-200V
Measurement range of full leakage current (peak): 100uA-10mA
Measurement range of resistive current (peak): 100uA-10mA
Measurement range of capacitive current (peak): 100uA-10mA
Measurement range of angle: 0·-90·
Power consumption: 4W
System measurement accuracy: ± (reading´5% + 5 words) (not more than 2mA for harmonic current)
AC power supply: AC 220V ±10%#65292;50Hz ±1%
Precautions:
1. When measure the reference voltage from PT or the measuring end of the testing transformer, carefully check wiring to avoid the PT secondary or test voltage short circuit.
2. Be careful not to wrongly connect the current and voltage sampling lines in the connecting process.
3. In the laboratory experiment, the high voltage power supply cannot use the series excitation testing transformer.
