Consult experts: anti-jump relay voltage coil and current coil at the same time whether the power or at the same time power failure? Is there in addition to the current voltage coil, whether there are other coils?
Anti-jump relay only current, voltage two coils. The current start coil is connected in series with the trip circuit, and the voltage self-holding coil is connected to the closing circuit by its own normally open contact, and its normally closed contact string is in the closing circuit. If the closing time in the short circuit fault, the current coil first start, its normally open contact closed, the voltage coil at this time action, since the maintenance. Its normally closed contact open, closing circuit will not be locked because the control switch and again in the fault. When the control switch is turned off, the voltage coil is released. Normally closed contact reset, play a role in anti-jump.
Anti-jump relay, is to prevent jumping relay, it is an intermediate relay, there are two coils, one is the voltage coil, one is the current coil, this relay in the oil switch circuit breaker control circuit is widely used;
The voltage coil of the anti-jump relay is connected in parallel with the coil of the closing contactor in the control circuit, and its normally closed contact is connected in series in the closing circuit in the control circuit;
Anti-jump relay current coil in series in the control loop in the trip circuit, the normally open contact with the anti-jump relay voltage coil in series;
How it works: When the oil switch circuit breaker is operated, the oil switch is closed and the oil switch of the tripping circuit in series is closed in the control circuit after the universal switch is closed to the closing position. After the oil switch is closed The current coil of the coil anti-jump relay has a current flow, and its series is closed in the voltage coil loop normally open (this contact is off the power delay); the oil switch is automatically tripped immediately after closing for some reason , The oil switch is connected in series with the normally closed auxiliary contact of the closing circuit in the control circuit. At this time, the voltage coil of the anti-jump relay has the voltage through, and the anti-jump relay connected in series in the closing circuit is disconnected and cut off Closing circuit, to prevent the oil switch again closing, effectively protect the oil switch, to avoid the expansion of the accident.
