JP2021013254A5 - - Google Patents

Description

Hereinafter, embodiments of the switchgear disclosed in the present application will be described with reference to the drawings. In each figure, the same reference numerals indicate the same or corresponding parts.

Next, the interlock module 53 will be described. FIG. 3A is a perspective view from above showing the appearance of the box body 53a for accommodating the interlock module 53, and FIG. 3B is a front view showing the configuration of the interlock module 53. 3C is a right side view showing the configuration of the interlock module 53, FIG. 3B is a view showing a cross section in the XX direction in FIG. 3B, and FIG. 3D is a left side view showing the configuration of the interlock module 53. In FIGS. 3B, 3C, and 3D, some of the parts housed inside the box are shown by broken lines. Further, the box body 53a for accommodating each component constituting the interlock module 53 shown in FIG. 3A is fastened to the inside of the right side portion of the housing 10 as shown in FIG. 2A by using, for example, a screw hole on the right side portion. It will be fixed.

Claims (9)

In the housing and in the housing,
A circuit breaker chamber having a circuit breaker that moves between the connection position and the disconnector position and can be electrically connected to and disconnected from the bus-side conductor and the load-side conductor.
A grounding switch that grounds or ungrounds the load-side conductor,
A switchgear including a control device room in which a control device for controlling the opening / closing operation of the circuit breaker is housed.
An operation shaft that extends the side of the circuit breaker from the grounding switch toward the front and is erected to operate the grounding or ungrounding operation of the grounding switch by rotating around an axis.
It is provided with an interlock module which is arranged on the side of the circuit breaker in the circuit breaker room and has an operation shaft handle insertion portion for inserting an operation shaft handle which is connected to the operation shaft to perform a rotation operation of the operation shaft. ,
The interlock module is
It has a shutter provided in the operation shaft handle insertion portion and a key operation unit capable of opening and closing the shutter.
The key operation unit is operated by a key that fixes the circuit breaker to the disconnecting position, and the key cannot be removed from the key operation unit while the grounding switchgear is grounded. The switchgear according to claim 1, wherein the key operation unit has a first stopper that is engaged with the shutter, and the first stopper is engaged and disengaged by operating the key. The switchgear according to claim 1 or 2, wherein the key operation unit includes a lock mechanism that restrains the operation of the key in conjunction with the rotational operation of the operation shaft. The interlock module is
A switch that enables the shutter to be opened by a switch operation based on a signal from the control equipment room is further provided.
The switchgear according to any one of claims 1 to 3, wherein the shutter opening operation is performed by both the key operation unit and the switch. A second stopper is engaged with the shutter, an electric solenoid switch for sucking a pin connected to the second stopper is operated by the switch, and the engagement of the second stopper is disengaged. The switchgear according to 4. The switch gear according to any one of claims 1 to 5, wherein the grounding switch has a grounding detector for detecting whether the grounding switch is in a grounded or ungrounded state. The switchgear according to any one of claims 1 to 5, wherein the interlock module has a display unit for displaying whether the grounding switchgear is in a grounded or ungrounded state. A plurality of the circuit breaker chambers, the grounding switch corresponding to the circuit breaker in each circuit breaker chamber, the operation shaft, and the interlock module are provided.
The key operation unit of each interlock module is operated by a key that fixes each disconnector at the disconnecting position, and the key cannot be removed from the key operation unit while the grounding switch is grounded. The switch gear according to any one of claims 1 to 7. The plurality of circuit breaker chambers, the grounding switch corresponding to the circuit breaker in each circuit breaker chamber, the operation shaft and the interlock module, and the plurality of circuit breakers are keys fixed to the disconnector positions, respectively. A key change operation unit having a second key that can be extracted by inserting all the keys.
The switchgear according to any one of claims 1 to 7, wherein the key operation unit of each interlock module is operated by the second key.