Mine flameproof and intrinsically safe permanent magnet vacuum bus tie switch
Application
KJZL-630/1140 (660) YD mine flameproof and intrinsically safe permanent magnet vacuum bus tie switch, used for the main bus of the double-circuit power distribution system in coal mines, at AC 50Hz, rated voltage 660V or 1140V, rated current The middle position of the double-circuit power supply system with the three-phase neutral point of 630A is not grounded, and it plays the role of double-circuit power supply connection. It realizes the distribution and adjustment of the electric energy of the two power supply circuits, and the dual power supply can be switched to realize forward power transmission or reverse power transmission.
Characteristics
- With Chinese character LCD and menu type human-computer interface, the operation is intuitive and simple. The current time, three-phase current and grid voltage, active power, insulation resistance, main / opening switch, operation status (closing / opening),, wind power locking and fault information are displayed in real time during operation;
- The parameters of various protection functions can be adjusted through menu selection, with wide application range and high protection accuracy;
- It has the function of "memory". The parameters of each protection function adjusted each time are memorized and saved. The parameters set last time are automatically extracted when the system is powered on or reset. Moreover, the protector can also memorize the fault information, which can be displayed through the menu, which is convenient for maintenance;
- The function of setting value adjustment, protection test and information inquiry can be conveniently carried out through the button on the door;
- The data communication interface can be selected to connect with the monitoring system, and RS485 or domestic leading power line carrier communication interface can be equipped according to the user's needs;
- The protector adopts modular structure, optimized software and hardware anti-interference processing, and has friendly man-machine interface, which makes the installation, use and maintenance easier and the service life is greatly increased.
Main technical parameters
Rated voltage: 660V, 1140V;
Protection measurement unit working voltage: AC65 ~ 260V;
The normal working voltage range of the protection measuring unit: 75~110%;
Rated operating frequency: 50Hz;
Rated current: 630A;
Intrinsic safety parameters: Uo: 22VAC/12VDC Io: 90mAAC/30mADC Lo: 1mH Co: 5μF
Limit breaking current: 12.5KA;
Short circuit protection action time: <100 ms;
Electric life: 3000 times;
Mechanical life: 15000 times;
Audited Supplier 
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