JPH0670407U - Control center - Google Patents

Abstract

(57) [Summary] [Purpose] Providing a control center that enables operation tests without disconnecting external cables. A secondary disconnection portion is formed by a fixed contactor 19 provided in a cable processing chamber 1 of a control center and an output conductor 18 which comes into contact with and separates from the contactor 19 by inserting and removing a control unit. Is rotatably attached to the case 24 of the unit.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a control center (low voltage multi-stage stack, closed switchboard).

[0002]

[Prior art]

 FIG. 2 is a front view of the control center, 1 is a cable processing chamber, 2 is a unit, 3 is a terminal chamber, and a main circuit for connecting an external cable and a control circuit terminal block are attached. 4 is a base. Fig. 3 is a single wire connection diagram of the unit 2, 5 is a power supply busbar, 6 is a primary disconnector, 7 is a circuit breaker, 8 is an electromagnetic switch, 9 is a thermal relay, 10 is a secondary disconnector, 11 is an internal Wiring or internal cable, 12 is a terminal block provided inside the terminal chamber 3, 13 is an external cable, 14 is an electric motor, 15 is a transformer for control power supply, 16 is for opening and closing the electromagnetic switch 8. It is a control switch.

FIG. 4 is a plan cross-sectional view of the cable processing chamber 1 and the unit 2. Reference numeral 17 denotes a contactor provided in the unit 2 and a power supply busbar 5 vertically provided to form a primary disconnection section 6. Reference numeral 18 is an output conductor of the unit 2 and the three phases are collectively molded and fixed to the unit 2. Reference numeral 19 is a fixed contact fixed in the cable processing chamber 1, and three phases are collectively molded. The output conductor 18 and the contact 19 form a secondary disconnection section 10. 20 is the door of the cable processing chamber, and 21 is the door of the unit 2.

When the unit 2 is inserted, the door 20 of the cable processing chamber 1 is opened, and when the unit 2 is inserted, the contactor 17 provided in the unit 2 is inserted into the power source bus bar 5 and connected at the primary disconnecting section 6. At the secondary disconnection portion, the output conductor 18 fixed to the unit 2 is inserted and connected to the fixed contact 19 fixed to the cable processing chamber 1.

[0005]

[Problems to be solved by the device]

 An operation test of the control center is performed prior to the trial run of the equipment, and the external cable 13 is disconnected at the terminal block 12 from the viewpoint of safety at that time. Therefore, it takes a lot of time to disconnect and connect the external cable 13.

An object of the present invention is to provide a control center capable of performing an operation test without disconnecting an external cable.

[0007]

[Means for Solving the Problems]

 Means for solving the above-mentioned problems in the present invention is to enable rotation of an output conductor of a unit, which comes into contact with and separates from a fixed contact provided in a cable processing chamber, in a control center incorporating a plurality of units. Is.

[0008]

[Action]

 When the unit is inserted and removed, the output conductor of the unit is connected to the fixed contact provided in the cable processing chamber when the unit is inserted, and the output conductor and the fixed contact are separated when the unit is pulled out. During the operation test of the control center, the connection with the contact is disconnected by rotating the output conductor.

[0009]

【Example】

 The present invention will be described below based on an embodiment shown in the drawings.

The same parts as those in FIGS. 2 to 4 are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a plan view of an essential part showing an embodiment of the present invention, in which 22 is a mold part in which the output conductors 18 of the unit 2 are collectively molded for three phases, and 23 is a handle provided in the mold part 22. Reference numeral 24 is a case of the unit 2, 25 is a hinge having one end fixed to the case 24 and the mold part 22 attached to the other end, and 26 is a small screw for fixing the mold part 22 to the case 24. Reference numeral 27 denotes a molded portion in which the fixed contacts 19 are collectively molded for three phases, and 28 is a fixed plate in the cable processing chamber 1, to which the molded portion 27 is fixed. The output conductor 18 and the fixed contact 19 form the secondary disconnection section 10 in FIG. Reference numeral 11 is an internal wiring connected to the terminal block 12 in FIG.

The mold portion 22 is always fixed to the case 24 with the machine screw 26. The unit 2 is inserted and removed in exactly the same manner as described in the conventional art. That is, when the unit 2 is inserted, the output conductor 18 fixed to the case 24 of the unit 2 by the molded portion 22 and the machine screw 26 at the secondary disconnection portion is fixed to the fixed plate 28 in the cable processing chamber 1 by the molded portion 27. It is inserted and connected to the fixed contactor 19 which is fixed via the above. On the contrary, when the unit 2 is pulled out, the connection between the output conductor 18 and the fixed contact 19 is disconnected.

During the operation test of the control center, if the small screw 26 is removed and the handle 23 is pulled toward the front, the output conductor 18 rotates together with the mold part 22 around the axis of the hinge 25 as shown by the chain double-dashed line. The connection with the fixed contact 19 is disconnected.

[0013]

[Effect of device]

 As described above, the control center according to the present invention makes it possible to rotate the output conductor of the unit that comes in contact with and separates from the fixed contact provided in the cable processing chamber, and rotates the output conductor during the operation test of the control center. It can be easily installed in the existing control center because it disconnects the connection with the fixed contact by moving it, and it also eliminates the need for external cable attachment / detachment work on the terminal block, thus improving the test efficiency at the equipment installation site. It has a practical effect of improving.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing an embodiment of the present invention.

[Figure 2] Front view of the control center

[Fig. 3] Single line diagram of control center unit

FIG. 4 is a plan view of a main part of a conventional example.

[Explanation of symbols]

 1 ... Cable processing chamber 2 ... Unit 18 ... Output conductor 19 ... Fixed contact

Claims (1)

[Scope of utility model registration request] 1. A control center in which a plurality of units are incorporated, wherein an output conductor of the unit that comes in contact with and separates from a fixed contact provided in a cable processing chamber is rotatable.