CN206099824U - High -voltage switch and integrative cabinet of solid -state soft start - Google Patents

Abstract

The utility model provides a high -voltage switch and integrative cabinet of solid -state soft start is connected high -pressure silicon controlled rectifier set up high voltage circuit breaker on the circuit with high voltage power supply line connection end after, leads to current transformer again and sets up the high -voltage motor link with the zero sequence transformer end, a bypass contactor is connected after establishing the high -pressure silicon controlled rectifier front end circuit of circuit polyphone to the display, sets up high voltage arrester behind the high -pressure silicon controlled rectifier rear end circuit of contacting again for the control of high pressure incoming telegram. When using after the installation, can start to the high -voltage motor provides sufficient reactive power, makes the stability that the motor starts does not influence network current.

Description

High-voltage switch gear and solid-state soft start integrated cabinet

Technical field

The utility model is related to a kind of motor starting device, and specifically a kind of high-voltage switch gear is with solid-state soft start integrally Cabinet.

Background technology

When high-voltage motor starts, larger electric current and voltage is needed, this high-power start electric current, voltage fully rely on electricity Net is supported, thereby result in power network current, voltage it is unstable, directly affect the safety of other electricity consumption facilities and normal operation, it is special It is not that powerful high-voltage motor starts can more cause electrical network to power unstable.

The content of the invention

The purpose of this utility model is to solve above-mentioned problem, there is provided a kind of high-voltage switch gear and solid-state soft start one Body cabinet, can allow high-voltage motor starting current to be stablized, and not affect the normal operation of electrical network and other appliances.

The utility model includes display, and the technical scheme for being adopted is：In the circuit with high-voltage power-line connection end Connect high-voltage thyristor after upper setting primary cut-out, then lead to current transformer and high-voltage motor is finally set with ZCT Connection end；The display for monitoring of sending a telegram here for high pressure to set and connect bypass contactor after the circuit of circuit series winding high-voltage thyristor front end, Contact again and high-voltage arrester is set after high-voltage thyristor back end of line.

The utility model with have following significant advantage effect：By above-mentioned technical proposal, as a result of high-voltage switch gear The science combination that cabinet and solid-state soft-start cabinet unite two into one, when running after installation, can assign in the integrated protection of high-voltage thyristor To stepless controlled output voltage, electronic function smooth starting or stopping are made, allow motor start-up not interfere with electrical network and other are used The stable operation of electric facility, thus solves present motor start-up power and crosses conference impact electrical network and other electricity consumption facilities shakinesses Fixed problem, design science is simple, makes motor and electrical network and other electricity consumption facility operation reliability.

Description of the drawings

With reference to the accompanying drawings and examples the utility model is described in further detail.

Fig. 1 is the utility model structural representation.

Specific embodiment

Shown in Fig. 1：It is being connected high-voltage thyristor after setting primary cut-out 2 with the circuit of high-voltage power-line connection end 1 3, then lead to current transformer 4 with the last setting high-voltage motor connection end 6 of ZCT 5；For the aobvious of high pressure incoming call monitoring Show device 7 to set after the circuit series winding front end circuit of high-voltage thyristor 3 and connect bypass contactor 8, then high-voltage thyristor back end of line of contacting High-voltage arrester 9 is set afterwards.

Operation principle of the present utility model is：After power supply connection is powered to be started, the controllable silicon 3 for being connected is capable of automatic changing The alternating current input voltage magnitude of threephase asynchronous, thus reaching the virtual value of alternating current makes constant current start by the change of certain slope Change curve to start, after the completion of startup, three-phase bypass contactor automatic pick, motor normally runs immediately.

In the utility model, high-voltage thyristor 3 can play the integrated protection effect for providing power supply, can reach stepless control Output voltage, makes motor smoothly start or stop, and bypass contactor 8 can be played after motor start-up is finished and bypass high pressure Silicon controlled is acted on.

Claims (1)

1. a kind of high-voltage switch gear and solid-state soft start integrated cabinet, including display（7）, it is characterised in that：With high-voltage power-line Connection end（1）Circuit on primary cut-out is set（2）After connect high-voltage thyristor（3）, then lead to current transformer（4）With zero Sequence transformer（5）High-voltage motor connection end is finally set（6）；For the display of high pressure incoming call monitoring（7）If circuit series winding is high Pressure controllable silicon（3）Connect bypass contactor after the circuit of front end（8）, then high voltage lightning-protection is set after high-voltage thyristor back end of line of contacting Device（9）.