The principle of the relay protection device based on the mature, widely used in single 100MW and the following types of turbine generator unit, voltage 220kV and below a variety of connection mode of main transformer, auxiliary transformer, transformer protection zone near, most can achieve four side differential protection.

Ø General power input:the power supply can be 220V, AC and DC common, the adaptability of the power supply is strong;

Ø High performance CPU processor: 32 bit high performance CPU processor to achieve protection of the sampling, computing, logic function and man-machine dialogue function, the hardware structure of the high redundancy in the device is ensured at each sampling point for all relay real-time computation;

Ø Strong electromagnetic compatibility：The whole panel, full enclosed chassis, strong and weak power is strictly separated, electromagnetic compatibility test to meet or exceed the relevant national standards;

Ø Reliable differential protection：Using fault component + + steady component sampling value differential protection differential form, not affected by load current, high sensitivity, anti CT saturation ability, combined with the inrush current locking, CT breakage blocking auxiliary criterion, ensure the reliability of differential protection and quick action;

Ø Flexible protection and configuration：The main device for different voltage levels and capacitiesThe main box after different protection configuration principle, configuration to meet the maximum demands of the backup protection protected element, flexible and convenient;

Ø Complete export configuration：The trip contact and the signal contact redundancy are adopted. All the exits are set by tripping matrix, and the is used to start the + protection action to avoid tripping the hardware of the protection device.

Ø Intelligent on-line monitoring：Fully LCD LCD interface, you can always view online, AC sampling, protection, fixed value, protection status, switch status and other information, the display page with instructions to facilitate maintenance and debugging;

Ø Strong external communications：Provide RS485 and Ethernet port communication connection, can remote communication device current state and action information;

Ø Super self-test function：The utility model has the functions of program self checking, fixed value self checking, switch quantity output and self checking, and when the self check is found wrong, the utility model can alarm in time, and automatically block and protect the exit;

Ø Perfect print function：The device can drive the stylus printer directly, and can print the fixed value report, sampling report, fault report, event record and recorded data;

Ø Rich PC analysis software：PC Windows debugging software and communication software based on network, which makes the device easy to use in the management of communication network;

Ø Convenient installation method：The overall design of the case can be directly mounted in the standard 19 inch cabinet;

      Ø Other：Series model protection features default configuration slightly different, special requirements please specify when ordering.

Ø Working storage temperature：-25～+65℃；

Ø Working storage humidity：≤ 95%，Gel free。

Ø Power input：AC/DC220V（50/60Hz）；

Ø Power waste：Not greater than 50W；

Ø Differential breaking time：≤20ms（1.5 times fixed value）；

Ø Differential action time：≤30ms（2 times fixed value）；

Ø Fixed value error：not exceeding ±5%；

      Ø Other：For special requirements, please specify when ordering.