Protection Relay,AM4

● A complete set of protection, related to the application;

● 4 current input, 4 voltage input, 12DI, 5DO;

● Auxiliary power supply adapts with AC220V, DC220V, DC110V, AC110V;

● 1 RS485 serial communication, IEC60870-5-103 and Modbus-RTU;

● 1 RS232 for user update;

● 1 GPS for GPS timing;

● More than 200 sequence of event records, more than 400 system logs, and more than 10 seconds tripping context records;

● Powerful graphic programmable Logic.

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Product Detail

Technical Parameters

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AM4 Manual

Overview

AM4 series microcomputer protection device is applicable to the user substation which the input voltage is 35kv or above. AM4 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.

Function

Rich protection functions
Feeder protection; Transformer protection; Motor protection; Capacitor protection; Voltage protection; Bus tie protection.

Measurement
RMS current values; RMS voltage values; frequency; Power factor; RMS active power.

Control functions
Remote control; Local control; Programmable switch-gear interlocking

Dimensions (unit:mm)

LCD Display

Typical Connection

Protection Functions	AM4-
Protection Functions	I	U1	U2
Trip and close circuit supervision (alarm)	■
Non-electricity (trip/alarm)	■
Undervoltage (alarm)	■	■	■
Overvoltage (alarm)	■	■	■
Residual overvoltage (alarm)	■	■	■
PT supervision (alarm)	■	■	■
Self-produced over zero-voltage (alarm)		■	■
Rear ports	I	U1	U2
RS485	■
Protocols	I	U1	U2
Modbus serial	■
IEC 60870-5-103	■
Measurement	I	U1	U2
Electric parameter	U, I, P, Q, PF, F, Ep, Eq, Es
Input current	4	0	0
Input voltage	4	4	8
Logs and Records	I	U1	U2
Fault recorder	■
Sequence of event record	■
Monitoring functions	I	U1	U2
Anti-pumping circuit	Optional
Remote control	■

Protection Functions	AM4-
Protection Functions	I	U1	U2
Overcurrent (3 stages,IDMT)	■
Earth fault (2 stages,IDMT)	■
Negative sequence overcurrent (2 stages,IDMT)	■
Auto-reclose	■
Overload (trip/alarm)	■
Under frequency	■
Post-accelerated overcurrent	■
Overvoltage (trip)	■
Undervoltage (trip)	■
FC block	■