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贵州开关柜浅谈高低压开关柜使用
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贵州开关柜浅谈高低压开关柜使用

发布日期:2018-01-19 作者:贵州开关柜 点击:

贵州开关柜浅谈高低压开关柜使用

贵州森时达电力电气有限公司Discussion on the use of high and low voltage switchgear in Guizhou switchgear

贵州开关柜

贵州开关柜介绍开关柜的基础知识

The basic knowledge of switch cabinet is introduced in Guizhou switchgear


在我国高压开关柜的GB3906和DL404标准中,对开关柜的技术要求已有详细规定,请参阅相关专业书籍,较为重要和实用的几个项为:

In the GB3906 and DL404 standards of high voltage switchgear, the technical requirements of switchgear have been specified in detail。 Please refer to the related professional books。


1) 对相间及相对地的绝缘距离的要求

1) requirements for interphase and relative insulation distance


2) 对防凝露的爬电距离的要求

2) requirements for the creepage distance of anti condensation


3) 对防护等级的要求:

3) requirements for the level of protection:


为防止人体接近高压开关柜的高压带电部分或触及运动部分,以及防止固体异物进入壳内,IEC标准统一了IP防护代码,防护等级的第四位字母表示电器设备对雨水的防护能力;由于户

In order to prevent the body from approaching the high voltage live part or touching the moving part of the high voltage switchgear and prevent the solid foreign matter from entering the shell, the IEC standard unifies the IP protection code, and the protection grade fourth bit letter indicates the electrical equipment's ability to protect the rainwater.


内柜体无防雨要求,也无须分级,故统用"X"表示。外表面通常可以做到IP3X级,有必要时也可做到IP4X级。内隔板防护要求可稍低,从IP0X到IP3X都有。

There is no rainproof requirement in the inner cabinet, and no classification is necessary。 Therefore, "X" is used。 The outer surface is usually IP3X, and IP4X is also possible when necessary。 Internal baffle protection requirements can be slightly lower, from IP0X to IP3X。


4) 对五防联锁功能的要求

4) requirements for the five interlocking function


五防联锁对防止误操作,减少人为事故,提高运行可靠性起到很大的作用。五防功能,指的是可以防止五种类型的电气误操作。 这五种防误操作功能是:

Five anti interlocking to prevent misoperation, reduce human accidents, improve operation reliability plays a great role. Five anti - function, refers to the five types of electrical misoperation can be prevented. The five anti misoperation functions are:


a) 防止误分、误合断路器。

A) prevent misdivision and misalignment of circuit breakers.


b) 防止带负荷合上或分断隔离开关(或隔离插头)。

B) prevent with load closing or separating isolation switches (or isolating plugs).


c) 防止带电操合接地开关或挂接地线--此功能涉及系统人为短路接地或人身生命安全,故定为强制性联锁。它要求:①当断路器或上下隔离开关处于合位时,接地开关绝不能被操合;

贵州森时达电力电气有限公司C) prevent live grounding switch or grounding wire - this function involves the system artificial short circuit ground or personal life safety, so it is mandatory interlock。 It requires: (1) when the circuit breaker or the upper and lower isolation switches are in position, the grounding switches can never be operated in。


②只有当接地开关合闸之后,柜体的后门和下前门才能被打开,才可能挂夹临时性接地线。这通常采用机械联锁方式,使得a.隔离开关处于打开位置接地开关才能操台;b.随之前、后门才能

Only when the grounding switch is closed, the rear door and the lower front door of the cabinet can be opened, and the temporary grounding wire may be hung. This is usually used in mechanical interlocking, making the A. isolation switch in the open position to operate the platform; B. with the front and back door.


开启挂接临时接地线。作为辅助措施,可在前、后门上加设高压带电显示装置作警示。

Open the temporary grounding wire. As an auxiliary measure, a high voltage charged display device can be added to the front and back doors as a warning.


d) 防止带有临时接地线或接地开关合闹时送电--此项也是强制性的,目的是保证系统和人身的安全。

D) prevention of power delivery with temporary grounding wires or grounding switches - this is also mandatory, with the aim of ensuring the safety of the system and the body.


e) 防止误入带电间隔--亦是强制性的,以保人身安全。

E) it is also mandatory to protect the personal safety of the person.


归纳起来,实施五防功能方面,有非强制性的(a项)和强制性的(b、c、d、e项);有主动性防御和被动性防御。被动防御指采用高压带电显示装置,只是提示性的,不够可靠。主动防御

Summed up, the implementation of the five defense functions, there are non mandatory (a) and mandatory (B, C, D, e); active defense and passive defense。  Passive defense refers to the use of a high voltage live display device, which is only suggestive and not reliable。 Active defense


贵州森时达电力电气有限公司大致可分三类:①采用机械联锁装置,用机械零部件来传动并产生约束,可靠性最高(除非零件损坏、断裂),宜优先推荐使用;②采用翻牌(插头)和机械程序销,可靠性稍逊,因锁与匙之间

It can be roughly divided into three kinds: (1) using mechanical interlocking device to drive and generate constraints with mechanical parts, and the highest reliability (unless parts are damaged or fractured) should be recommended first; secondly, the use of flop (plug) and mechanical program pin is slightly less reliable, because between lock and spoon.


并非绝对-一对应;③采用电气联锁,可靠性又差一些,因为电磁锁和导线都有损坏的可能,而且也需电源供电(须与继保回路电源分开),但优点是可以长距离传送。

It is not absolute one-to-one correspondence. Thirdly, the electrical interlock is not reliable, because the electromagnetic locks and conductors are all damaged, and they need power supply (separated from the relay circuit power supply), but the advantages are long distance transmission.


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