benlong 
AC contactor comprehensive test machine
AC contactor comprehensive test machine performs contact gap/over‑travel, synchronization, Hi‑Pot (2.5kV), pick‑up/release, over/undervoltage tests in one automated station. Quick‑change tooling (
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ATS aging test bench
Benlong ATS aging test bench for automatic transfer switches (16A–3200A, PC/CB class). Programmable load/no‑load cycles up to 10,000+, multi‑station parallel test, IEC 60947‑6‑1 compliant. Real‑time monitoring of transfer delay, contact resistance, temperature. Ideal for certification labs and QC.
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Auxiliary and Signal Contact test bench
Auxiliary and signal contact test bench for RCBO/MCB. Tests dual‑mode logic (Auxiliary & Alarm), contact resistance (
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Electric meter aging test bench
Three‑phase electric meter aging test bench with ZN‑D3000 precision power source. High‑density vertical rack (up to 96 positions), real‑time register monitoring, communication testing (RS485/optical), automatic protection, data logging. Reduces infant mortality, ensures 15‑year service life. IEC/ANSI compliant.
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Electric meter manual calibration bench
Custom three‑phase energy meter manual calibration bench. Automated basic error, creeping, start, harmonic simulation (2‑21), influence quantity tests. Multi‑position (4‑16), 0.05% accuracy, DLMS/COSEM/Modbus. Non‑standard design tailored to your meter form factor.
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Magnetic ring current test bench
Automatic magnetic ring current test bench with HIOKI tester (15‑50mA). Fully automated feeding, wire connection, test, and 10‑bin sorting (9 pass + 1 NG). 20,000 pcs/8h, OEE data, bilingual HMI. Ideal for RCCB/RCBO magnetic core grading.
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