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XGN66A-12 indoor box-type metal sealed switchgear 12kv 11kv10kV box type fixed m预装式变电站(35KV欧变)
Xgn66-12 box fixed metal closed switch equipment {switch cabinet for short), used for receiving and distributing electric energy in 3.6kv, 7.2kv and 12kV three-phase ac 50Hz series, especially suitable for frequent operation, its bus system is single bus (and can derive single bus with bypass and double bus structure).The switch cabinet conforms to the requirements of national standard GB 3906-2006 "3.6kv-40.5kv ac metal enclosed switch equipment and control equipment" and international standard iec62271-200:2003, and has two "five prevention" blocking functions.

The main switch of this switch adopts zn28a-12 series or zn12-12 series vacuum circuit breaker with CD17A electromagnetic operating mechanism and CT198 spring operating mechanism, and the isolation switch adopts gn30-12 rotary isolation switch and cn22-10 large current isolation switch series.

     

 XGN66-12 箱型固定式金属封闭开关设备{简称开关柜), 用于3.6、 7.2、 12kV三相交流50Hz系列中作为接受与分配电能之用,特别适合于频繁操作的场合, 其母线系统为单母线(并可派生出单母带旁路和双母线结构)。本开关柜符合国家标准GB 3906-2006 《 3.6kV-40.5kV 交流金属封闭开关设备和控制设备》 及国际标准IEC62271-200:2003的要求, 并且有两部提出的 “五防” 闭锁功能。
      本开关的主开关采用ZN28A-12系列或ZN12-12系列真空断路器配用CD17A电磁操动机构和CT198弹簧操作机构, 隔离开关采用GN30-12旋转式隔离开关、 CN22-10大电流隔离开关系列产品。

 

Xgn66-12 box type fixed metal closed switch equipment, cabinet body frame is welded by Angle steel, cabinet is divided into circuit breaker room, bus room, cable room, electrical break room, etc.

Delta circuit breaker room at the bottom of the cabinet put oneself in another's position before, the rotation of the circuit breaker are connected by a rod and the operating mechanism, on the circuit breaker terminal connected with the isolating switch, circuit breaker under terminals connected with the isolating switch, circuit breaker under the terminals connected to the current five sensor, circuit breaker room also is equipped with pressure relief channel, if the internal arc occurs, the gas will pressure release through the exhaust passage.

The bus room in the upper part of the cabinet, in order to reduce the height of the cabinet, the bus is arranged in crystal form, with 7350N bending strength of porcelain insulator support, the bus and the isolation switch terminal connection, between two adjacent cabinet bus room can be isolated.

△ cable room in the cabinet bottom of the rear, cable room stanchion insulator can be equipped with voltage monitoring device, cable fixed in the bracket, for the main wiring for connection scheme, this room is the connection cable room.The relay room is in front of the upper part of the cabinet.Indoor installation of various relays, indoor terminal row bracket, the door can be installed indicators, signal components and other secondary components, the top can also be arranged secondary small bus.

The operating mechanism of the circuit breaker is located on the left side of the front, above which is the operation and interlock mechanism of the disconnecting switch.Switch cabinet is double-sided maintenance, front maintenance of secondary components of relay, maintenance of operating mechanism, mechanical interlocks and transmission parts, maintenance of circuit breakers.Rear maintenance main bus and cable terminal, in the circuit breaker room and cable room are equipped with lights.The lower part of the front door is provided with grounding copper busbar parallel to the width of the cabinet, and its section is 4 × 40mm2o

 

1. Mechanical interlock: in order to prevent the separation switch with load separation, to prevent the wrong separation of circuit breakers, to prevent the error of the electrified interval;Electric closing grounding switch: the switch cabinet is equipped with corresponding mechanical interlocks, and the operating principle of mechanical interlocks is as follows:

 

2. Power failure operation (operation - maintenance)

Switch cabinet in the working position, that is, the upper and lower isolation switch, circuit breaker in the closing state, the front and back doors have been locked, and in the electrified operation, at this time the small handle in the working position.Circuit breaker points after the brake first, then the small handle to the "breaking closure" position, then cannot switch circuit breaker, insert the operating handle isolation operation under the hole from the top down, to isolate break-brake position, to handle, insert the isolation operation on the hole from the top down, to isolate break-brake position, to handle, insert the earthing switch is held hole meat, push from the bottom up, make the earth switch in the closing position, can be opened the front door, first remove the keys to open the back door, behind door outage is complete, maintenance staff to circuit breaker and cable room for maintenance and repair.

XGN2-12 箱型固定式金属封闭开关设备,柜体骨架由角钢焊接而成,柜内分为断路器室、母线室、 电缆室、 断电器室等,室与室之间用钢板隔开。
△断路器室在柜体前下部,断路器的转动由拉杆与操动机构连接,断路器上接线端子与上隔离开关连接,断路器下接线端子与上隔离开关连接,断路器下接线端子与电流五感器连接,断路器室还设有压力释放通道,若内部电弧发生时, 气体可通过排气通道将压力释放。
△母线室在柜体后上部,为了减小柜体高度,母线呈晶形排列,以7350N抗弯强度的瓷质绝缘子支撑,母线与上隔离开关接线端子相连接, 相邻两柜母线室之间可隔离。
△电缆室在柜体下部的后方 , 电缆室支柱绝缘子可设有电压监视装置,电缆固定在支架上, 对于主接线为联络方案时,本室则为联络电缆室。继电器室在柜体上部前方。室内安装各种继电器等,室内有端子排支架,门上可安装指示仪表、信号元件等二次元件,顶部还可布置二次小母线。
△断路器的操动机构装在正面左边位置,其上方为隔离开关的操作及联锁机构。开关柜为双面维护,前面检修继电器的二次元件,维护操动机构,机械联锁及传动部分,检修断路器。后面维修主母线和电缆终端,在断路器室和电缆室均有照明灯。前门的下方设有与柜宽方向平行的接地铜母线,其截面为 4 × 40mm2o

1. 机械联锁:为了防止带负荷分合隔离开关,防止误分误合断路器, 防止误入带电间隔;防止带电合接地开关:防止带接地刀合闸,开关柜采用相应的机械联锁,机械联锁的动作原理如下:

2.停电操作(运行-检修)
开关柜处于工作位置,即上下隔离开关、 断路器处于合闸状态,前后门己锁好,并处于带电运行之中,这时的小手柄处于工作位置。先将断路器分闸后,再将小手柄扳到 “分断闭锁” 位置,这时断路器不能合闸,将操作手柄插入下隔离的操作孔内从上往下拉,拉到隔离分闸位置,将手柄拿下,再插入上隔离操作孔内从上往下拉,拉到上隔离分闸位置,再将手柄拿下,插入接地开关操孔肉,从下向上推,使接地开关处于合闸位置,可先打开前门,取出门后边钥匙打开后门,停电操作完毕,检修人员对断路器及电缆室进行维护和检修。

Ambient temperature: upper limit +40℃, lower limit -25℃;

Altitude: altitude within 1000m;

Delta relative temperature: daily average value is no more than 95%, monthly average value is no more than 90%;

Earthquake intensity: less than 8 degrees.

Ambient: no fire, explosion hazard, contamination level below level 3, chemical damage, or violent shaking.

△ 环境温度:上限+40℃,下限-25℃;
△ 海拔高度:海拔高度不超过 1000m;
△ 相对温度:日平均值不大于 95%,月平均值不大于90%;
△地震烈度:不超过8度。
△周围环境:没有火灾、 爆炸危险和污染等级不超过3级、 化学腐蚀及剧烈震动的场所。

XGN66-12

no

item

unit

data

1

rated voltage

Kv

3.67.212

2

Rated current

A

6301250/1600/2000/3150

3

Rated short circuit breaking current

KA

16/20/31.5/40

4

Rated short-circuit closing current {peak}

KA

40/50/80/100

5

Rated short circuit dynamic stable current {peak}

KA

40/50/80/100

6

Rated thermal stability current

KA

16/20/31.5/40

7

Rated thermal stability time

S

4

8

Protection grade

 

Ip2x

9

structural type

 

Single busbar breaking and single busbar strip side

10

Mode of operation

 

Circuit electromagnetic type, spring energy storage type

11

Overall dimension width x depth x height

MM

1100 X 1200 X 2650  general type

12

Weight

KG

1000

 

 

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