Busbar protection measuring control device mainly used to the 10KV、35KVand below voltage of the protection measuring control device of Busbar coupler connection cabinet,The protection device is provided with the function of protection for current instantaneous trip, time limit protection for current instantaneous trip, over current, Inverse time Over-current, over load, over voltage, low voltage, PT line-break, PT losing pressure, loss of close circuit and trip circuit,widely applied to the 35KV below the voltage level of user engineering;if you need the charge protection of Busbar,you can choose the 9791 Busbar device!
Protection function:
01. protection for current instantaneous trip (trip)
02.protection for time delay current instantaneous trip (trip)
03.Over Current Protection (trip)
04. Inverse time over-current (General /very/ extreme)
05. Over load (alarm/trip)
06．Over voltage (trip)
07．Low voltage (trip)
08. PT line-break (alarm)
09. PT no-voltage (alarm)
10. loss of close circuit and trip circuit (alarm)
Description: in the conditions, the protection function can be increased to meet the needs of the field.
remote control function:
01. Measure current：IA、IC（sampling value*N2 of ），Ia、Ic（ sampling value of）；
02.protect current：ia、ib、ic（ sampling value of）；
03. bu coupler voltage：UAB、UBC、UCA（sampling value*N2 of ），Uab、Ucb（ sampling value of）；
04. frequency：f；
05. power：P、Q（sampling value*N2 of ）；
06. power factor：cosФ；
(Three) control function：
01. The close or break of Circuit breaker
02. The remote close or break of switch of Circuit breaker
（Four) auxiliary function:
01.Operation instruction：When the device is running normally, "run" indicator light has a regular flashing;
02. Power instruction: when the device is operating normally, the "power" indicator is always on;
03. Device troubling：checksum error-default, blocking relay out;
04．Device alarm：current、voltage reach the initial value and keep it to the set time;
05.device trip：current、voltage reach the Set trip Value and keep to the set time;
06.close or break instruction：the break or close instructions of the switch；
07. Event records: can record 32 events, 32 remote events, 8 self test events;
08. Online modification: "protect the service in back" and "protect the fixed value" can modify the over computer after the direct modification of the communication;
09. On line printing: any interface in the protection menu that can be printed directly through computer communication;
10Communication function: having 485 communication mode
Protective action principle
protection for current instantaneous trip、set a time limit protection for current instantaneous trip、over current and Inverse time over-current 、over load、over voltage、low voltage、PT Break、PT no-voltage ,Control circuit disconnection principle same with 9511 line Protection measurement and control device
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