Protection Relay, AM5

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Protection Relay, AM5

AM5 series microcomputer protection device is applicable to the user substation which the input voltage is 35kv or above. AM5 protection relay can be used to protect and control the user substation, and is widely used in power industry, water conservancy industry, traffic industry, oil industry, chemical industry, coal industry, metallurgical industry and so on.

Functions

Protection Functions	AM5
Protection Functions	F	T	M	C	B	U1	U2	DB
Directional overcurrent (with voltage dependant, 3 stages)	■
Overcurrent (with compound voltage dependant, 3 stages)		■
Overcurrent (motor start,motor run, 2 stages)			■
Overcurrent (2 stages)				■	■
Overcurrent IDMT	■	■	■	■	■
Earth fault	■	■	■	■
Earth fault IDMT (I01)	■	■
Earth fault IDMT (I02)	■	■
Overload (alarm)	■	■	■
Overload (trip)	■	■	■
Trip and close circuit supervision (alarm)	■	■	■		■
Undervoltage (trip)			■
Undervoltage (alarm)						■	■
Loss of voltage (trip)	■
Loss of voltage (alarm)	■
PT disconnection	■	■	■	■	■	■	■
Three phase auto-reclose	■
Under frequency	■
Over frequency	■
Post-accelerated overcurrent	■				■
Overvoltage (alarm)	■					■	■
Loss of voltage (trip)	■			■
Blocking rotor			■
Capacitor undervoltage				■
Unbalance voltage				■
Unbalance current				■
Residual overvoltage (trip)	■			■
Residual overvoltage (alarm)	■		■			■
Non-electricity		■	■	■
Starting time-out			■
Directional power	■
Thermal overload（trip/alarm）			■
Negative sequence overcurrent (2 stages/IDMT)			■
Overvoltage average			■
Overcurrent average			■
Incorrect phase sequence			■
Bus tie and standby power automatic switch					■
0.4kV standby power automatic switch								■
FC block	■	■	■	■	■

Note: √ represents that the function is available, ■ represents that the function is optional, blank represents that the function is unavailable.