When using a zinc oxide arrester tester, procurement personnel often report a situation: testing resistive current and monitoring discharge tubes require separate instruments. In traditional solutions, arrester resistive current testing and discharge tube trigger voltage and response time detection are often completed by different devices, requiring crews to carry multiple instruments to the site, time-consuming wiring switching, and scattered data recording. The YS-8901 integrates resistive current measurement and discharge tube parameter detection functions into one main unit, reducing the number of on-site devices.
This tester is designed for key parameters of zinc oxide arrester valve discs and discharge tubes. The initial operating voltage U1mA measurement range covers 10–2000V, suitable for valve disc detection of arresters at common voltage levels. Under conditions where the full current is greater than 100μA, the current measurement accuracy can typically reach ±5% of reading ±1 digit, providing reference data for procurement acceptance and daily operation and maintenance. The varistor measurement function can assist in judging valve disc aging or moisture trends. It should be noted that this accuracy specification is based on specified environmental conditions, and actual use should follow the requirements of the manual.
Procurement personnel can confirm based on usage scenarios: if the crew is mainly responsible for distribution arrester inspection, attention should be paid to whether the U1mA range covers the valve disc under test; if discharge tube sampling inspection is involved, it is necessary to confirm that the instrument has trigger voltage and response time measurement functions. The YS-8901 is suitable for routine tests in substations, distribution rooms, and arrester manufacturing enterprises. For the specific interface type, power supply method, and storage function of the instrument, it is recommended to refer to the technical agreement at the time of ordering.
The instrument should be used within the temperature and humidity range specified in the manual, and the reliability of the test line connections should be checked before testing. When measuring discharge tube parameters, pay attention to distinguishing the trigger voltage polarity requirements. When not in use for a long time, it is recommended to power it on regularly for inspection and send it for calibration according to the metrology cycle to ensure the reference value of the measurement data. Arrester parameters differ among manufacturers and batches, and the criteria should be comprehensively determined in combination with historical data and relevant standards.
