Motor protection measuring control device mainly used10KV、6KV、3KVand below level voltage of motor protection and control，The protection device not only has The protection device not only has three segment type current, zero sequence protection, voltage protection, non electric quantity protection and such perfect function, but also perfect measure function, communication function,Is the best choice for 10KV high voltage motor，If you need a high demand for motor protection,our 973 motor protection measurement and control device and 996 motor differential protection measurement and control device are your best choice.
Protection function：
01. protection for current instantaneous trip (Trip)
02. protection for time delay current instantaneous trip (tripping operation)
03. Over current (tripping operation)
04. Inverse time over-current (general / very / extreme)
05 overload (alarm / trip)
06.Zero sequence time delay current instantaneous trip instantaneous trip current I segment Trip)
07. Zero sequence time delay current instantaneous trip instantaneous trip currentⅡsegment (tripping operation)
08. Zero sequence time delay current instantaneous trip instantaneous trip current Ⅲsegment (tripping operation)
09.Zero current ⅢInverse time limit (General / extreme / extreme)
10. Zero sequence time delay current instantaneous trip instantaneous trip current (Alarm / trip)
11．Over voltage (tripping operation)
12．low voltage (tripping operation)
13. PT line-break (give an alarm)
14. PT no-voltage (Alarm)
15.Temperature is too high (Trip)
16. Temperature rise (give an alarm)
17 loss of close circuit and trip circuit (Alarm)
Description: under the conditions, the protection function can be increased to meet the needs of the field.
remote control function：
01. Measuring current：IA、IC（sampling value*N2），Ia、Ic（ sampling values)；
02. Bus voltage：UAB、UBC、UCA（sampling value*N2),
Uab, Ucb (two times);
03. frequency：f；
04. power：P、Q（sampling value*N2）；
05 power factor：cos ะค；
control function:
01. The local closing and local tripping of Circuit breaker
02. The remote closing and remote tripping of Circuit breaker
auxiliary function:
01. Operation instruction：When the device is running normally, "on" indicator light has a regular flashing;
02. Power instruction：When the device is operating normally, the "power" indicator light is always on;
03. Device abnormal: checksum error-default, blocking relay is output;
04. Device alarm: the current and the voltage to achieve the initial value set and maintained to the set time, and the collection of alarm input;
05. Device trip：The current, the voltage reaches the set trip value and maintains to the set time, and collects the trip to open the quantity;
06.on/off instruction：instruction of switch status;
07. Event record：Can record 32 protection events, 32 remote events, 8 self test events;
08. Online modification:“Protection and retreat”and“Protection fixed value”Modify can be directly modified by computer communications to save；
09. Online print：Any interface in the protection menu can be printed directly after computer communication.；
10. Communication function：With 485 communication mode.
Protection action principle
protection for current instantaneous trip, time limit protection for current instantaneous trip, over current and Inverse time Over-current, over load、Zero sequence time delay current instantaneous trip current、Zero sequence time delay current instantaneous trip 、Zero sequence time delay current instantaneous trip and zero sequence Inverse time limit、Zero sequence time delay current instantaneous trip 、Over voltage、low voltage、System loss of power、PT line-Break、PT no-voltage、Line breaking principle of control circuit .The same 9511 line protection and measurement and control device
Motor start-up
1)．Protection current ia、ib、ic Anyone phase≧ Motor starting current（0.2*Ie）；
2)．the time of current input≧Motor start time Tqd；
To meet the above conditions，Motor complete to start ，the protection for time delay current instantaneous trip 、Over current、Inverse time over-current、Over load protection function start，Otherwise close the above protection function.
Non electricity protection（Including temperature rise C10、Temperature is too high C11）
Temperature rise
1)．RLP16 Temperature rise－“in service”；
2）．C10 Open input signal；
To meet the above conditions,Protection drive alarm signal relay B14/B16（Until the manual reset,Relay only returns），The warning panel light is on.
Note: the temperature rise is only the alarm, the temperature is too high to drive the trip out.
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