Abstract:
Recloser apparatuses, methods and systems are disclosed. In one embodiment a recloser includes a vacuum interrupter coupled with first and second electrical terminals. A driving structure is coupled with the vacuum interrupter. An electromagnetic actuator is coupled with the driving structure and is moveable to a first position to open the vacuum interrupter and to a second position to close the vacuum interrupter. A mechanical openig/closing mechanism includes a handle and a mechanical connection driving structure. The handle is moveable to move the vacuum interrupter to the first position and the second position. A control circuit is provided in communication with the electromagnetic actuator and is operable to actuate the electromagnetic actuator to move the vacuum interrupter between the first position and the second position.
Abstract:
Energy Efficient Electromagnetic Contactor (EEEC) according to preferred embodiments of the present disclosure may include a lower body casing L, upper body casing U1, U2, U3, U4 or U5, a plurality of fixed contacts 11, 12 and 13, each of the fixed contacts having terminal end and a contact end, a plurality of movable contacts 34 and 35, each of the movable contacts being associated with a different one of the fixed contacts for making an electrical connection at a contact point with the contact end of the associated fixed contact, movable contacts support, bobbin coil, stationary iron core, movable iron core, bobbin, conical returning spring, driving member/latching member heart shaped driving pin operating mechanism and in another preferred embodiments electromagnetic protraction - retraction operating mechanism. The object of the invention is to provide an electromagnetic contactor which enables switching ON or switching OFF the contactor using a power supply for a short period and to keep the contactor in ON state no continuous power is required and also even when the power gets OFF the closed contacts of the electromagnetic contactor will not open and changed its state when the operating coil 4 is energized again for a short moment resulting in to conservation of energy, improved reliability, economical in cost and space and low maintenance. In another embodiment the electromagnetic protraction-retraction operating mechanism is used for operation of the EEEC. Some embodiments to provide interlocking mechanism in which change of state of the EEEC from energised state to de-energised state is possible only when lever arms Z1c and Z2b of electromagnetic armature lifter Z1 and pull type actuator solenoid Z2 is attracted by energisation of coil Z1g and Z2a respectively.
Abstract:
A thermal gauge for circuit breaker useful for indicating operating conditions, such as in a miniature circuit breaker, has a thermal transducer thermally connected to the current path of the circuit breaker such that heat transfer causes the transducer to give a visible display of heat, latch engagement, or current draw within the breaker directly through a window in the face of the circuit breaker.