CN204103329U - Side-installed shifting type high-tension switch cabinet voltage mutual inducer trolley - Google Patents

Abstract

The utility model provides a side mounted and removable high voltage switch cabinet voltage transformer handcart, which includes a vehicle frame, the voltage transformer is installed at the bottom of the vehicle frame, and A, B, C three-phase conductors and three-phase conductors are arranged above the voltage transformer. Insulators, including plum blossom contacts of each phase, contact arms, terminal blocks, insulators, fuses, and arresters; the insulators are fixed laterally on the rear side plate of the frame; the arrester is installed laterally on the rear side plate, at the bottom of the arrester Install the lightning arrester grounding bar and fix it with the rear side plate of the frame; install the transformer grounding bar at the outlet end inside the voltage transformer; the grounding contact fixed on the frame is used to achieve grounding connection with the switch cabinet body; The outer side of the contact arm is covered with an insulating sleeve, and the insulating cover is installed on the wiring board, and the fuse is shielded to achieve phase-to-phase insulation; the control transformer is mounted on the rear side plate of the frame. The handcart has a compact structure, which is conducive to the miniaturization of the side-mounted and removable high-voltage switchgear.

Description

Side-mounted removable high-voltage switchgear voltage transformer handcart

technical field

The utility model relates to a side mounted and removable high voltage switch cabinet voltage transformer handcart, which belongs to the technical field of high voltage electrical appliances.

Background technique

In the side-mounted removable high-voltage switchgear, the removable parts refer to the circuit breaker handcart and other auxiliary handcarts. As removable parts, the circuit breaker handcart and other auxiliary handcarts can be moved out of the cabinet during power outage maintenance. Voltage transformers, surge arresters, control transformers, sensors and other electrical components are installed on the voltage transformer handcart, and are electrically connected to the main busbar of the switch cabinet through the contact arm and plum blossom contact to complete the composition of a specific primary scheme.

At present, the known side-mounted and removable high-voltage switchgear voltage transformer handcart is too large in size, and the installation of electrical components is single, and it is difficult to realize the combination of multiple components, which affects the realization of the miniaturization of the switchgear.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art and provide a miniaturized lateral arrangement, that is, the three phases of A, B, and C are arranged in the right, middle, and left directions, and voltage transformers and control devices are installed on the frame. Transformers, fuses, lightning arresters, contact arms, plum blossom contacts, insulating covers, insulating sleeves and other components are used to realize the voltage transformer scheme of the auxiliary handcart in the side-mounted and removable high-voltage switchgear. The technical scheme that the utility model adopts is:

A side-mounted and removable high-voltage switch cabinet voltage transformer handcart, including a frame, the voltage transformer is installed at the bottom of the frame, and A, B, C three-phase conductors and insulators are arranged above the voltage transformer, including each Phase plum blossom contacts, contact arms, terminal boards, insulators, fuses, lightning arresters;

The uppermost plum blossom contact is connected to the contact arm below it, and the lower end of the contact arm is connected to the insulator through the terminal board, and the insulator is fixed laterally on the rear side plate of the frame; the upper end of the fuse is connected to the terminal board; the lightning arrester is installed laterally On the rear side plate, the lightning arrester grounding bar is installed at the bottom of the arrester and fixed with the rear side plate of the frame; the transformer grounding bar is installed at the outlet end inside the voltage transformer; the grounding contact fixed on the frame is used for Realize grounding connection with the switch cabinet body;

There is an insulating sleeve on the outer side of the contact arm, and the insulating cover is installed on the wiring board, and the fuse is shielded to achieve phase-to-phase insulation;

The control transformer is side-mounted on the rear side plate of the vehicle frame.

Further, a secondary plug, a wire harness tube and a turning head are installed outside the vehicle frame, and the secondary side of the voltage transformer and the control transformer are connected to the secondary plug through the turning head and the wire harness tube with wires.

Further, the ground contact is fixed on the right end plate of the vehicle frame.

Further, wheels are installed at the bottom of the vehicle frame.

Further, a handle is installed on the outside of the vehicle frame.

The utility model has the advantages that: the utility model has a compact structure and layout, and the location arrangement of each device is reasonable, so that the volume of the voltage transformer handcart is small, and it is beneficial to realize the miniaturization of the side-mounted and removable high-voltage switchgear.

Description of drawings

Fig. 1 is the structural composition schematic diagram of the present utility model.

Fig. 2 is the right side view of Fig. 1 .

Fig. 3 is an electrical diagram of a scheme of the utility model.

Detailed ways

Below in conjunction with specific accompanying drawing and embodiment the utility model is further described.

The side mounted and removable high-voltage switchgear voltage transformer handcart proposed by the utility model includes a vehicle frame 1, which is mainly composed of a left end plate 22, a front curved plate 13, a right end plate 18 and a rear side plate 23. .

The three-phase five-column voltage transformer 15 is installed on the bottom of the vehicle frame 1, and the three-phase conductors and insulators of A, B, and C are arranged above the voltage transformer 15, including plum blossom contacts 5, contact arms 4, and terminal blocks of each phase. 21. Insulator 20, fuse 3, arrester 19;

The uppermost plum blossom contact 5 is connected to the contact arm 4 below it, and the lower end of the contact arm 4 is connected to the insulator 20 through the L-shaped terminal board 21, and the insulator 20 is laterally fixed on the rear side plate 23 of the vehicle frame 1; the fuse 3 The upper end of the arrester is connected to the terminal board 21; the arrester 19 is installed laterally, and the arrester grounding bar 2 is installed at the bottom of the arrester 19 and fixed with the rear side plate 23 of the vehicle frame 1; the transformer is installed at the outlet end of the voltage transformer 15 The ground bar 14; the ground contact 17 fixed on the vehicle frame 1 is used to realize ground connection with the switch cabinet; the ground contact 17 can be optionally fixed on the right end plate 18.

The outer side of the contact arm 4 is covered with an insulating sleeve 6, and the insulating cover 7 is installed on the terminal board 21, and the fuse 3 is shielded to achieve phase-to-phase insulation; in order to clearly show the internal structure of the three phases A, B, and C in Figure 1 Insulating sleeve 6 and insulating cover 7 are only drawn on phase B.

The control transformer 8 is side mounted on the rear side plate 23 of the vehicle frame 1, and can be installed on the upper left side of the vehicle frame 1 specifically. The control transformer 8 provides control power for the entire primary system used in the switchgear, and solves the power supply problem of the primary system economically and conveniently.

On the left end plate 22 outside the vehicle frame 1, a secondary plug 9, a wire harness tube 10 and a turning head 11 are installed to realize the connection of the voltage transformer 15, the secondary side of the control transformer 8 and the cabinet control and monitoring circuit. The voltage transformer 15 and the secondary side of the control transformer 8 are connected to the secondary plug 9 through the turning head 11 and the harness tube 10 with wires.

In order to facilitate the pushing and pulling of the handcart, wheels 16 are installed at the bottom of the vehicle frame 1, and a handle 12 is installed outside the vehicle frame 1 left lower part.

The primary wiring of voltage transformer 15, fuse 3, lightning arrester 19 and control transformer 8 is shown in Fig. 3 .

When in use, manually push the handcart of the voltage transformer to the test position of the switchgear, and send the handcart to the working position through the lifting mechanism of the switchgear to realize the electrical connection of the primary system of the switchgear and the handcart of the voltage transformer.

Claims (5)

1. A side-mounted and removable high-voltage switchgear voltage transformer handcart, comprising a frame (1), characterized in that: Potential transformer (15) is installed on vehicle frame (1) bottom, is provided with A, B, C three-phase conductor and insulator above voltage transformer (15), comprises plum blossom contact (5) of each phase, contact arm ( 4), terminal block (21), insulator (20), fuse (3), arrester (19); The uppermost plum blossom contact (5) is connected to the contact arm (4) below it, and the lower end of the contact arm (4) is connected to the insulator (20) through the wiring board (21), and the insulator (20) is laterally fixed on the vehicle frame (1 ) on the rear side plate (23); the upper end of the fuse (3) is connected on the terminal block (21); the lightning arrester (19) is installed laterally on the rear side plate (23), and installed Lightning arrester ground bar (2) is fixed together with the rear side plate (23) of vehicle frame (1); Transformer ground bar (14) is installed at the outlet end of voltage transformer 15 inner side; Fixed on the vehicle frame (1) The grounding contact (17) is used to realize grounding connection with the switchgear cabinet body; The outer side of the contact arm (4) is covered with an insulating sleeve (6), the insulating cover (7) is installed on the terminal block (21), and the fuse (3) is shielded to achieve phase-to-phase insulation; Control transformer (8) side is installed on the rear side plate (23) of vehicle frame (1). 2. The side-mounted and removable high-voltage switchgear voltage transformer handcart as claimed in claim 1, characterized in that: Secondary plug (9), wire harness pipe (10) and turning head (11) are installed on vehicle frame (1) outside, and the secondary side of potential transformer (15) and control transformer (8) passes through turning head ( 11). Connect the wire harness tube (10) to the secondary plug (9). 3. The side-mounted and removable high-voltage switchgear voltage transformer handcart as claimed in claim 1, characterized in that: The ground contact (17) is fixed on the right end plate (18) of the vehicle frame (1). 4. The side-mounted and removable high-voltage switchgear voltage transformer handcart as claimed in claim 1, characterized in that: Wheels (16) are installed at the bottom of the vehicle frame (1). 5. The side-mounted and removable high-voltage switchgear voltage transformer handcart as claimed in claim 1, characterized in that: Handle (12) is housed on vehicle frame (1) outside.