低压组合开关

QJZ系列1140V低压组合开关

日期:2018-5-30 13:36:31 人气:2371


 主要用途 Main Application 

    QJZ(2)-口/1140(660)系列矿用隔爆兼本质安全型多回路真空电磁起动器(组合开关)适用于含有甲烷混合气体、具有煤尘爆炸危险的矿井中,在交流50Hz、额定电压1140(660)V的供电线路中,对综采工作面采煤、掘进、运输等设备三相鼠笼型异步电动机的起动、停止及主、从顺序;单、双机双速切换进行集中控制和保护,并可在停止时改变相序。组合开关配有127V辅助电源,可对照明和控制系统供电。
    QJZ(2)-口/1140(660)Series, Mine explosion-proof and intrinsically safe circuit more vacuum electromagnetic starter (combination switch) is suitable for containing methane gas mixture, mine, with coal dust explosion danger in ac 50 HZ, rated voltage 1140 (660) V, power lines, to fully mechanized coal face mining, tunneling, transportation equipment three-phase squirrel-cage asynchronous motor starting, stop, and the Lord, and from the order; Single - and double-speed switching for centralized control and protection, and can change phase sequence at stop time. The combination switch is equipped with 127V auxiliary power supply, which can supply power to the lighting and control system.

 产品性能特点:

 1. 保护功能:开关具有过载、短路、断相(含相不平衡)、过/欠压、漏电闭锁、瓦斯断电、风电闭锁和本安先导回路防止自起动等多种保护。
2. 隔离换相开关:采用真空隔离换相开关,特殊情况可带载分断,具有电火花不外露、安全、可靠的优点。
3. 数据采集处理器:集电流、电压、漏电功能于一体,具有高检测精度和强的抗干扰能力。
4. 功率驱动单元:插接式功率控制单元,集控制装置、信号采集、传输为一体。
5. 控制系统:采用德国西门子PLC可编程序控制器实施控制和保护。
6. 短路与后备:短路故障采取PLC和熔断器双重保护。
7. 工作控制方式:可以设置为单机双速、双机单速、双机双速、点动及单控、顺控等多种控制运行方式。
 8. 双快开门结构:主腔前后开门,快开前门结构,使接线、维修、更换元器件更为方便。
9. 显示系统:采用中文大彩色显示屏,本安键盘设定,实时显示控制方式、工作状态、运行数据和故障类型、时间、回路代号等,具有故障分项累计、记忆及查询功能。
10. 通讯功能:提供隔离型标准的RS-485等通信接口;满足矿井供电系统自动化“四遥”控制功能。
11. 闭锁功能:具有可靠的电气闭锁和机械闭锁。
12. 辅助电源:可根据用户需要配置127V等辅助电源,满足用户需求;
13. 电缆引入装置: 进线侧:  出厂前以铜排并联,可满足大电流多路并联输入方式。出线侧:A、电缆连接器B、压盘式。

1. Protection function: with overload, short circuit, open phase (including the balance or not), over/under voltage, earth leakage lockout, gas power, wind power atresia and the pilot circuit to prevent from starting and so on the many kinds of protection.
2. Isolation switch: vacuum isolation switch is used, special case can be broken off, it has the advantages of electric spark not exposed, safe and reliable.
3. Data acquisition processor: set current, voltage, leakage function in one, with high detection accuracy and strong anti-interference ability.
4. Power drive unit: the splicing power control unit, the set control device, the signal acquisition and transmission as one.
5. Control system: adopt German Siemens PLC programmable controller to control and protect.
6. Short circuit and Reserve protection: short circuit fault adopts the double protection of PLC and fuse.
7. Work control mode: can be set to single machine double speed, double machine single speed, double speed, point movement and single control, shun control and other control operation mode.
8. Double fast open door structure: the main cavity front and back door open, front door open structure quickly, so that connection, maintenance, replacement of components more convenient.
9. Large color screen display system: the Chinese, the keyboard Settings, real-time display control mode, working status, running data and fault type, time, loop code, etc., with functions of fault component accumulated, memory and query.
10. Communication function: provide the isolation standard rs-485 communication interface; It meets the control function of "four remote control" of mine power supply system.
11. Locking function: with reliable electrical locking and mechanical atresia.
12. Auxiliary power supply: according to user needs, 127V and other auxiliary power supply can be configured to meet user needs.
13. The cable introducing device: Into the line side: factory to copper in parallel, can meet the high current multiple parallel input mode; Outlet side: A, cable connector B, pressure plate type.




 主要技术参数:Main technical parameters

开关型号  Switch model

QJZ-1260/1140(660)-4

QJZ-2800/1140(660)-15(14.13.12.11.10.9.8.7)(B)QJZ2-2000/1140(660)-12(11.10.9.8.7.6.5)(B)系列

series

输出回路数 Output loops

4~15回路    4~15 loops

工作电流

working current

 

总电流1260~2800A(单路最大630A)

total current 1260-2800A

额定工作电压 Rated operational voltage

V

1140(660)

660

交流真空

接触器

Vacuum contactor

额定工作电流

Rated working current

单位

Company

接通能力   Ability to connect

分断能力   Breaking ability

极限分断能力

Limit breaking ability

630

A

6000

4800

6000

500

A

5000

4000

5000

400

A

4000

3200

4500

250

A

2500

2000

4500

200

A

2000

1600

3000

160

A

1600

1280

3000

125

A

1250

1000

2500

80

A

800

640

1600

本安参数

Intrinsically safe parameters

最大开路电压

Maximum open circuit voltage

V

13

最大短路电流          maximum short circuit current

mA

22