Leakage protection of the main technical parameters are there?

Update date:2018-01-05 Source:MAXGE

The main action performance parameters are: rated leakage action current, rated leakage action time, rated leakage current does not act. Other parameters are: power frequency, rated voltage, rated current.


① rated leakage operating current under the conditions specified, so that leakage current protection device. For example, 30mA protector, when the access current value reaches 30mA, the protector that action disconnect the power.


② rated leakage action time refers to the sudden application of rated leakage action current, to the protection circuit is cut off until the time. For example, 30mA × 0.1s protector, from the current value reaches 30mA, the main contact separation time of not more than 0.1s. The company is located in:


③ rated leakage current does not act under the conditions specified, the leakage current protection device does not act, generally should choose the leakage current value of the current one-half. For example, the leakage current of 30mA leakage protection device, the current value reaches 15mA below, the protection should not act, otherwise the sensitivity is too high, easy to malfunction, affecting the normal operation of electrical equipment.


④ other parameters such as: power frequency, rated voltage, rated current, etc., the selection of leakage protector should be used with the line and electrical equipment to adapt. Leakage protector operating voltage to adapt to fluctuations in the normal power grid rated voltage, if the fluctuations are too large, will affect the normal operation of the protector, especially electronic products, power supply voltage is lower than the rated voltage protection device will refuse to operate. Leakage protector rated current, but also with the loop in the actual current, if the actual operating current is greater than the rated current of the protector, resulting in overload and the protector malfunction.

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