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HZJB-II Single Phase Relay Protection Tester is a portable field testing equipment with excellent performance; Elegance and polished appearance with aluminum alloy chassis and PC panel, within the ARM chip control, LCD screen display voltage and current output stopwatch, it could output a full isolation way for adjustable AC/DC voltage, and AC/DC current and a way for adjustable DC voltage; the output loop with double overload protection with large output capacity ,small volume, light weight, high reliability ,It Suitable for field calibration and test for various relay.link:https://www.beijing-huazheng.com/relay-protection-tester/hzjb-ii-single-phase-protection-relay-test.html