Undervoltage delay tripping a circuit

Posted on Mar 28, 2007

Undervoltage release is long-term work, when the power supply voltage drop in the operating voltage range when the release is released, and directly led to the tripping axle rotation, cut off the breaker.

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Undervoltage release Instantaneous tripping points and tripping delay two species. Which reached the undervoltage delay trip there two ways kinds: one is the electronic trip unit (see Figure 6-81); the other one is the resistive capacitive delay release, the line shown in Figure 6-84 FIG. FIG, Q is undervoltage release coil. Adjustment capacitor C and a resistor Ri, the parameter value of R2, can change the delay time.

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