•   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.

Brief:

XB821 user boundary switch controller is a control  equipment specially designed for outdoor medium voltage circuit breakers. When  inter-phase short circuit and single-phase earth fault occur in users branch,  boundary circuit breaker immidiately open and insulate faulty line, so as to  recover other branches power supply.

XB811 reclosing controller can help circuit breakers to  realize data acquisition and telemetry, current protection, reclosing, faults  recording, remote communication, local/remote control operation, and switch  state acquisition /output, etc.

Performance parameter:

•   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

Main  Functions:

1,Telemetry

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

•   Zero-sequencevoltage,  zero-sequence current;

•   Frequency;

•   Voltage harmonic, current  harmonic;

2,Telesignalisation

•   4-line telesignalisation  acquisition;

•   Switch position signal(closing  position, opening position);

•   Energy stored signal;  

•   Operating button state (closing,  opening );

3,Function of control  

•  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,Current  protection

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

•   Inverse current-limiting  protection;

•  Zero-note current protection and small current  grounding protection.

5,Reclosure

•   0～3 times automatically  reclose;

•   Accelerate after  reclosing.

6,Switching management and blocking  control

•   Power-on closing;  

•  Non-voltage  opening;

7,Maintenance

•   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.

 8,Data storage

•   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.

9,Function of fault  records

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

10,Communication  Function

•  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.

Installation  size: