Welcome to KESTAR

Electrical events, such as lightning, can couple into metallic conductors and cause damage from the excessive system voltages and currents (surges) generated. Surge protective devices (SPD) are used to mitigate these coupled surges in both High Voltage (HV) and Low Voltage (LV) power systems and communication systems. An Surge protective device has a non-linear voltage-current characteristic that reduces voltages exceeding the normal safe system levels by a rapid increase in conducted current. Kestar produces various surge protective device. Warmly welcome you to contact us.

 

Company Profile

Kestar Electronic Co., Ltd.

Kestar Electronic Co., Ltd. was established in 1984.At president, it has developed into a large protecting parts manufacturer which specialized on both developing and producing all series metal oxide varistors, SPD surge protector and lighting protection products. It became a leader in the same field.

The main voltage sense components are: MYG general varistor, MYL lighting protection varistor, MYE high load varistor, MYP silver element of high energy varistor......

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Metal Oxide Varistor (MOV) are voltage  dependent symmetrical resistors intended to protect equipment from transient voltages resulting from lightning strikes. This component is located near the ac supply input and before the bridge rectifier. The use of MOV not only reduces the chance of electrical damage buut also improves equipment reliability. Metal oxide varistor have many types of colors and to test it you can use an analog meter set to X 10 K ohm and it should show no reading on both ways. If you got any readings then it had developed a short circuit.