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Understand The Wiring Problem Of Varistor

Dongguan Weiqing Electronics Co.,Ltd | Updated: Jan 30, 2019
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红包扫雷10元10包那个数最多the varistor is a voltage limiting type protection device. using the non-linear characteristics of the varistor, when an overvoltage occurs between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, thereby protecting the latter circuit. the main parameters of the varistor are: varistor voltage, current capacity, junction capacitance, response time and so on.


Connect the varistor to the circuit with a thick enough cable. Recommended size of the cable. Note: The grounding wire should be 5.5 mm2 or more. The connecting wire should be as short as possible and straight, because the inrush current will add to the inductance of the connecting wire. The voltage increases the voltage across the protected device.

varistor flow rate ≤600a (600~2500)a (2500~4000)a (4000~20k)a.

Wire cross-sectional area ≥ 0.3 mm2 ≥ 0.5 mm2 ≥ 0.8 mm2 ≥ 2 mm2.


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