| 摘要 |
A circuit protection device comprises a housing consisting of a base and an upper cover. The device also comprises a clapboard, a circuit board, an AC power source path, a synchrotrans unit, a synchronous control switch, a tripping and resetting mechanism, a ground fault detection drive unit and a test and reset switch, to perform a function of ground fault protection, and to switch synchronously on or off the AC power path. The device has a manual mechanical tripping function and a manual electrical reset function, ensuring that the AC power supply connecting to the load circuit can be switched off forcibly by means of manual way in case that the circuit protection device is malfunction or the load circuit is failure, and performing the circuit protection function test at the time of resetting, and so that preventing the device from being reset in case that the circuit protection device is not energized, or the circuit protection device is failure, or the AC power supply is reversely connected with load terminals. It can ensure that the socket terminals cannot be energized in case the AC power supply is connected reversely from the load terminals. |
| 主权项 |
1. A circuit protection device, comprising a housing consisting of a base (14) and an upper cover (10), characterized in that, the circuit protection device, comprises a clapboard (3), a circuit board (84), an AC power source path (502), a synchrotrans unit (501), a synchronous control switch (500), a tripping and resetting mechanism (515), a ground fault detection drive unit (509), and a test and reset switch (92), wherein:
the AC power source path (502), comprises power terminals (42), load terminals (48), socket terminals (20), a main power switch (221), and a synchrotrans switch (514), wherein: the power terminals (42) are used to input AC power source, the load terminals (48) and the socket terminals (20) are used to connect with loads, the main power switch (221) is used to connect or disconnect to the electrical path between the power terminals (42) and the load terminals (48) and the socket terminals (20), the synchrotrans switch (514) is used to connect the socket terminals (20) with the load terminals (48) or the power terminals (42); the tripping and reset mechanism (515), comprises a reset button (25), a reset link (26), a tripping button (32), a tripping push rod (34), a raiser (68) and a latch unit (90), wherein, the raiser (68) is fixed between the clapboard (3) and the circuit board (84), the latch unit (90) comprising a latch pin (72) and a tripping coil (76), by changing relative positions between the latch pin (72), the reset link (26), and the raiser (68), the raiser (68) is controlled to move up and down, making the main power switch (211), the synchronous control switch (500) and the test and reset switch (92) switch on or off; the ground fault detection drive unit (509), located on the circuit board (84), detecting a ground fault current in the AC power supply path (502), and driving the tripping coil (76), so to change the relative positions between the latch pin (72), the reset link (26), and the raiser (68); the test and reset switch (92), used for testing the ground fault protection function of the circuit protection device, when the test and reset switch (92) is switched on, a ground fault current is generated in the AC power source path (502), and the ground fault detection drive circuit (509) outputs a tripping signal; the clapboard (3), fixed between the base (14) and the upper cover (10), used for fixing socket terminals (20), and positioning the main power switch (221) and the raiser (68); the circuit board (84), fixed on the base (14), used for fixing the test and reset switch (92), the synchronous control switch (500) and the latch unit (90); the synchronous control switch (500), used for controlling the synchrotrans unit (501) to operate; the synchrotrans unit (501), fixed on the latch unit (90), used for pulling the synchrotrans switch (514) to act. |
