It is specially designed for  boundary spring operation mechanism and circuit breaker;

  With wholly industrial design, it  can adapt to severe outside environment;

  Set functions of data  acquisition, current protection, reclosing, wireless remote control, local  control, state information acquisition and communication as  one;

  Relay controls output, available  for any operating power;

  Adopt LCD display and whole  numeric keys, more convenient for operation;

  Adopt fault wave-recorded,  convenient for fault analysis;

  Adopt aviation socket to connect  to circuit breaker, convenient for installation and  maintenance.

  Environment: Temperature:  －40℃～70℃;Relative humidity:  10%～100%;

  Rating data: Rated voltage:  220V/100V; Rated current: 1A, 5A; Frequency: 50Hz;

  Wattage consumption: In  non-communication, active power≤5W, apparent power≤10VA;

  Sampling  precision:DC sampling precision: grade 0.5; Power  precision: level 1;

  Electro Magnetic Compatibility:  Fast transient disturbance test, high frequency disturbance test, surge test,  electrostatic discharge test,and radiation electromagnetic interference test to  the device all can meet the requirement of DL/T721-2000 Distribution Automation  System Terminal Unit;

 Insulation test: Insulation test  is accord with the demand of GB/T14598.3-93 6.0;

 Impulse voltage test is accord  with the demand of GB/T14598.3-93 8.0

  Three-phase  voltage,three-phase current, P,Q,S,CosΦ;

  Zero-sequencevoltage,  zero-sequence current;

  Frequency;

  Voltage harmonic, current  harmonic;

  4-line telesignalisation  acquisition;

  Switch position signal(closing  position, opening position);

  Energy stored signal;  

  Operating button state (closing,  opening );

 Support circuit breaker to switch  through operation panel;

 Support circuit breaker to switch  through hand-held wireless remote controller;

 Support circuit breaker to switch  through wireless terminal PDA;

 Support remote master station to  realize circuit breaker's switching.

Quick break, flash quick-break, three-phase  overcurrent protection;

  Inverse current-limiting  protection;

 Zero-note current protection and small current  grounding protection.

  0～3 times automatically  reclose;

  Accelerate after  reclosing.

  Power-on closing;  

 Non-voltage  opening;

  Setting protection parameter  through local dial switches;

  Support searching date and  setting parameter and constant value through short-range wireless communication PDA;  

 Support searching date and  setting parameter and constant value through debugging local interface  RS232.

  Can save curve  data;

  Can store voltage, current,  power, and so on;

  Record and store SOE(Sequence Of  Event);

  Save control and operating  events;

  Fault records and  storage;

  Support historical data added  uploading.

  Can record and search current  waveform of pre- and post-fault.

 Support remote communication  modes, such as GPRS/CDMA, etc.

 Support DL/T634.5101-2002,  DL/T634.5104-2002, GSM messages and many other communication  protocols.