| 摘要 |
An electromagnetic operating device includes: a fixed core (6); a movable core (7) movably configured with respect to the fixed core (6); an electromagnetic coil (9) which moves the movable core (7) by excitation to open or close a vacuum switch (1) coupled to the movable core (7); and a driving power supply (21) that supplies electric power to the electromagnetic coil (9). In the electromagnetic operating device, the driving power supply (21) comprises two types of power supplies: a capacitor power supply (24) serving as a power supply which is for performing opening/closing operation in a normal time with respect to the vacuum switch (1); and a DC power supply (26) which is for performing opening/closing operation in an emergency. The capacitor power supply (24) which is for performing opening/closing operation in the normal time includes: capacitors (22a, 22b) that store electric power to be supplied to the electromagnetic coil (9); and a control board (23) which controls a current to be supplied from the capacitors (22a, 22b) to the electromagnetic coil (9) in response to an open-contact or close-contact command to the vacuum switch (1). Then, the DC power supply (26) which is for performing opening/closing operation in the emergency is to directly supply DC electric power to the electromagnetic coil (9). |
