Portable Surge Arrester Monitor Calibrator DC 1500V 1800V Inrush 50A-100A 0.001mA Resolution 0.5% Accuracy | XHJS401A

The Portable Surge Arrester Monitor Calibrator is a dedicated field instrument developed to address the demands of DC-type arrester monitors used in power systems, such as the Model JCQ(WZ)-16 series. It is mainly dedicated to the calibration work of 1000kV-class arrester monitors, verifying the measurement accuracy and action counting performance of on-line monitors so that the leakage current and action data reported by the monitors remain reliable during routine operation. With its compact and portable design, the calibrator enables on-site verification without removing the monitor from service, which greatly improves the efficiency of preventive maintenance before the thunderstorm season.

The calibrator works by injecting a standard sine wave current signal into the current loop of the on-line arrester monitor, and comparing the value displayed by the monitor with the known output of the calibrator to verify measurement accuracy. For the action counter, the calibrator generates an instantaneous inrush current of 50A to 100A together with a DC inrush voltage of 1500V or 1800V, which triggers the counting mechanism of the monitor, and the action count is verified in a cyclic 1-2 second rhythm. Because the output current range is customizable from 0-5mA to 30mA, one instrument can calibrate monitors of different models and rated currents. The whole verification process can be carried out on site with the built-in battery, which makes the calibrator especially suitable for thunderstorm-season pre-checks and annual preventive maintenance of 1000kV-class arrester monitors.

It is used to verify the measurement accuracy and action counting performance of DC-type on-line arrester monitors such as the JCQ(WZ)-16 series, and is mainly dedicated to the calibration work of 1000kV-class arrester monitors in power systems.

It is designed for DC-type arrester monitors, and the output current can be customized in the ranges of 0-5mA, 10mA and 30mA, so monitors with different rated leakage current levels can be calibrated with the same instrument.

The calibrator injects an instantaneous inrush current of 50A to 100A together with a DC inrush voltage of 1500V or 1800V to trigger the counting mechanism, and verifies the action count in a cyclic measurement mode of 1-2 seconds per action.

Yes. The calibrator is powered by a built-in 10.4Ah 12V battery, so the whole verification process can be completed on site without external power, which is highly convenient for field maintenance teams.

It provides a current accuracy of 0.5% plus or minus 3 digits with a resolution of 0.001mA, and the standard sine wave output at 55Hz ensures high stability and repeatability of the measured data.