Acrel AM2SE Protection Relay

Acrel AM2SE Protection Relay

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

● 4 current input, 3 voltage input, 8DI, 5DO;

● Auxiliary power supply adapts with AC220V, DC220V, DC110V, AC110V, DC48V, DC24V;

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

● 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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Technical Parameters

Function

Product Tags

Acrel AM2SE Protection Relay

General

AM series protection relay are applicable to the user substation which the input voltage is 35kv and below. We adopt mature technology solutions to ensure the quality of the AM relay.The AM relay are widely used in substations, subsection posts and ring main units for office buildings, commercial buildings, communication buildings, mine buildings and so on

Diagram of AM2SE Protection Relay

Function of AM2SE Protection Relay

Front Panel

Dimension

Networking

FAQ of AM2SE Protection Relay

How to set the CT and PT ratio of the protection device?

The protection device can set the CT and PT ratio through the fixed value menu. For example, the current transformer is 75/5 and the voltage transformer is 10/0.1, then the CT ratio is set to 15 and the PT ratio is set to 100.

For AM4, if you want to place a circuit line protection and transformer protection, how to distinguish the model?

AM4 is suitable for circuit protection and transformer protection. No need to distinguish between models when placing orders

When the voltage is three-phase three-wire system, does the current have to be connected with 2CT?

The voltage wiring mode and current wiring mode of the protection device can be set independently, and can be connected freely.

How to confirm whether the anti-trip function is configured?

If the circuit breaker is equipped with anti-trip, the device does not must be equipped with anti-trip; if the circuit breaker does not have anti-trip, you need to configure the AM5-FT anti-trip module. (If DC48V is selected as the operating power supply, the anti-trip box is not optional, and the circuit breaker must be equipped with anti-trip function; if you choose AC anti-trip, please note that AC and DC general anti-tripping)

How to purchase suitable protection devices?

Before ordering, it is recommended to consult related engineers, select the appropriate protection model,

and then fill in the corresponding selection table, and place the order after confirmation by the engineers.

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Acrel AM2SE Protection Relay

Technical Parameters

Characteristics	AM2SE
Power Supply
Rated voltage	AC/DC 110V or AC/DC 220V or DC48V or DC24V
Range	Rated voltage × (1±20%)
Burden	≤10W ( DC )
PT Inputs
Rated value	AC 100V or 100/√V
PT rated secondary range	1V～120V
Accuracy	0.5S
Burden	≤0.5VA (each phase)
Voltage withstand	Continuous: 1.2 Un 10s: 2 Un
Phase CT Inputs (Protection Current)
CT rated secondary range	AC 5A or 1A
Dynamic	0.04 ~ 15 × CT rated current
Accuracy	0.5S
Burden	≤0.5VA (each phase)
Thermal withstand	Continuous: 2 In 1s: 40 In
Frequency
Rated frequency	50Hz or 60Hz
Frequency range	45 ~ 65Hz
Accuracy	±0.1Hz
Digital Inputs
Operating nominal voltage	AC/DC 110V or AC/DC 220Vor DC48V or DC24V
Voltage threshold	70% of nominal voltage
Reset threshold	55% of nominal voltage
Burden	≤ 1W (each phase) (DC220V)
Digital Outputs
Make and carry	≥ 10000 operations
Making capacity	≥ 1000W, L / R = 40ms
Continuous current	≥ 5A
Short duration carry current	≥ 30A for 200ms
Breaking capacity	≥ 30W, L/R = 40ms

Analogue inputs	AM2SE
	V	H
Input Current	4
Input Voltage	3
Protection Functions	V	H
Overcurrent (3 stages,IDMT) [ANSI 50/51]	√
Earth fault (3 stages,IDMT) [ANSI 50N/51N]	√
Negative sequence overcurrent (2 stages,IDMT) [ANSI 46]	√
Auto-reclose [ANSI 79]	√
Overload (trip/alarm) [ANSI 49F]	√
Under frequency [ANSI 81U]	√
Post-accelerated overcurrent	√
I0 Post-accelerated overcurrent	√
Overvoltage(trip) [ANSI 59]	√
Undervoltage (trip) [ANSI 27]	√
Self-produced over zero-voltage (trip) [ANSI 59N]	√
Residual overvoltage (trip) [ANSI 59N]	√
FC block [ANSI 86]	√
Trip and close circuit supervision (alarm) [ANSI 74]	√
Non-electricity (trip/alarm)	√
Undervoltage (alarm) [ANSI 27]	√
Overvoltage (alarm) [ANSI 59]	√
Residual overvoltage (alarm) [ANSI 59N]	√
PT supervision (alarm)	√
Self-produced over zero-voltage (alarm) [ANSI 59N]	√
Overhaul-lockout [ANSI 86]	√
2nd harmonic restraint	√
Rear port	V	H
RS485(1 port)	√
Protocols	V	H
Modbus serial	√
IEC 60870-5-103	√
Measurement	V	H
Electric parameter	√
Logs and Records	V	H
Fault recorder	√
Sequence of event record	√
Others	V	H
Anti-pumping circuit	■
Remote control	√