Insulation resistance tester is suitable for insulation testing in the maintenance, repair, test and verification of various electrical equipment. The insulation resistance dividing line is uniform and clear for accurate reading. Easy to operate and carry. Low power consumption, battery powered, long service time. Has the function of battery capacity check.
What happens when electrical insulation fails?
Electrical insulation is not just the plastic polymer material that wraps the wire. It is a complete system consisting of cable insulation, casing insulators, tube space, motors and general equipment. Mechanical pressure, contamination, and temperature changes can all cause these components to deteriorate over time, allowing currents to leak out. Current leakage may cause the following problems:
1, when the current through the insulation layer generates heat, will make the insulation layer deterioration, until the insulation failure, and will form a fire hazard.
2, the leakage current must be returned to the source, it will flow through any available conductor, line pipe, pipe, water or earth back to the source. This unfavorable current creates a dangerous voltage.
3, leakage current is not efficient. The leakage of electrical current through the insulation layer does not drive the motor, emit light or heat, but still produces consumption.
4, leakage current will cause overcurrent protection device trip, so that the motor and transformer overheating. The result is poor electrical insulation that causes equipment to malfunction and production lines to shut down. Now, no plant can withstand an unplanned shutdown. "Customers need to diagnose faults quickly. No one wants to lose production time, and many customers are eager to know whether they need to repair their equipment or simply replace it."
Role of insulation resistance tester:
By testing the insulation resistance of different components in the system (transformers, switchgear, wires, motors), technicians can isolate and repair faulty components. Technicians use tests to verify high insulation resistance between conductors and ground or adjacent conductors. Two common examples are testing the insulation between the motor winding and the motor base, and checking the resistance between the phase conductor and the lap wire/cage. Before powering up the system, use insulation tests to verify that it is sound and can improve system performance; Insulation testing can uncover manufacturing process problems and equipment defects that would not normally be detected until the equipment fails. In the European Union, the test is mandatory, even for civilian systems.
Wuhan Xinshengneng Technology Co., Ltd. is a professional insulation resistance equipment manufacturers, the production of products, models, cost-effective products, welcome to call 0312-3188565 consultation!
