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

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

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

 IGBT controls output, it can  quickly cut fault power;

 Adopt LCD display and 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;

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

 Sampling  precision:DC sampling precision: grade 0.5;  Current and Voltage precision : grade  0.5;   Power precision: level  1;

 Electromagnetic Compatibility:  Fast transient disturbance test, high frequency disturbance test, surge test,  electrostatic discharge immunity 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  accord with the demand of GB/T14598.3-93 6.0;

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

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

  Zero-sequence voltage,  zero-sequence current;

  Frequency;

  Voltage harmonic, current  harmonic;

  10-line telesignalisation  acquisition;

  Switch position signal(closed  position, open position);

  Energy stored signal;  

  Operating button state (closing,  opening );

  Remote signal input (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.

  4-line relay empty note  output;

  Output current switch  state(closing/opening posing), alarm state and battery activation  control.

  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;

  Instant pressure blocking  

 Bilateral pressure losee  opening;

 Bilateral pressure  blocking;

 Instant pressure blocking  

  Data recording, searching and  setting through local LCD displays;

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

  Support searching data 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.

   Display current waveform in real  time.

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

  Have function of power-down  protection: it can normally work more than 8 hours after loss of  electric;

  Movement more than 10 times after  loss of voltage;

  Support manual and remote battery  activation operation.

  Support different communication  modes, such as optic-fiber ethernet, GPRS/CDMA, medium voltage arrier,  etc.

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