High Voltage Electrical Test Ensures Power Distribution Equipment Safety
Shanghai DEMIKS Electric Power Technology supplies integrated withstand voltage test bench with withstand voltage test, power-on test and loop resistance test functions for TBEA electrical switch-gear. High voltage electrical performance testing verifies insulation and switching performance of medium & high voltage switch-gear to guarantee stable grid operation.
With rapid development of smart power grids, high-voltage electrical switch-gear acts as core equipment of power distribution systems. Strict electrical performance inspection is mandatory before factory delivery. Hidden risks including insulation failure and poor contact may lead to short circuit, discharge and severe power accidents once defective switch-gear is put into service. High voltage electrical testing is an indispensable quality checkpoint for switch-gear manufacturing.
TBEA is a leading power transmission & transformation equipment manufacturer in China. At TBEA Southern Smart Grid Technology Yunji 5G Industrial Park, medium and high voltage electrical switch-gear is mass-produced. To strictly control product quality, TBEA adopts the complete set withstand voltage test bench developed and manufactured by Shanghai Demiks Electric Power Technology Co., Ltd., to carry out full electrical performance inspection of electrical switch-gear.
This mobile integrated high voltage test device combines withstand voltage test, power-on test and loop resistance test in one single unit. It completes the whole factory acceptance test of switch-gear without multiple separate instruments and repeated wiring, greatly saving testing time and fitting mass production assembly lines.
- Withstand voltage test: Evaluate insulation strength of switch-gear, check insulation performance of materials and clear insulation weak points to prevent breakdown discharge under high voltage;
- Power-on test: Simulate actual live working conditions, test secondary circuits, protection relays, indicator lights and interlock mechanism to verify reliable logic action;
- Loop resistance test: Measure contact resistance of circuit breakers and disconnectors, detect poor contact and avoid overheating damage under heavy current load.
Inside TBEA manufacturing workshop, technicians connect multi-core test cables from Demiks withstand voltage test bench to switch-gear units, run full electrical performance tests and record data. Only switch-gear passing all high voltage test items can be delivered to end customers.
Hidden defects like insulation degradation, bad contact and wrong secondary wiring cannot be found by visual inspection. Professional high voltage electrical testing equipment is required to detect these hazards. Skipping electrical tests may send faulty switchgear into power grid systems, causing blackout and safety risks. The complete withstand voltage test bench serves as a professional diagnostic tool, finding potential faults at factory stage to secure reliability of power distribution equipment.
Shanghai Demiks Electric Power Technology specializes in R&D and production of high voltage power test instruments. Customizable complete set withstand voltage test benches are widely used for factory tests of switch-gear and ring main units, complying with GB standards. We provide stable one-stop electrical testing solutions for electrical equipment manufacturers worldwide.
