Acrel Transformer Differential Protection Relays with Overcurrent Protection Function

• Customization: Available
• Theory: Thermal Relay
• Usage: Communication Relay
• Model NO.: AM3SE
• Phase: 3
• Electricity Type: Ac
• Number of Pole: 8
• Load: Medium Power Relay
• Protective Characteristics: Sealed Relay
• Action Principle: Electronic Type
• Size: Subminiature
• Type: Electric Parameter Relay
• Input Current: 1A/5A
• Input Voltage: AC 100V
• Functions: 8 Current Input, 4 Voltage Input, 16 Di, 10 Do
• Communications: 2RS485
• Display: LCD
• GPS Timing: 1 GPS
• Power Supply: AC/DC110V 220V,DC48V
• Warranty: 2 Years
• Transport Package: Paper Carton
• Specification: 267*164mm
• Trademark: ACREL
• Origin: Jiangsu, China
• HS Code: 9028301400
• Production Capacity: 1000PCS/Week
• Package Size: 20.00cm * 25.00cm * 20.00cm
• Package Gross Weight: 3.000kg

Product Description

Product Description

Acrel Transformer differential protection relays with overcurrent protection function 

 

Functions and parameters

Main functions of AM3SE Protection Relay for medium voltage under 35KV

AM3 Series Protection Relay

A complete set of protection, related to the application;
8 current input, 4 voltage input, 16 DI, 10 DO;
Auxiliary power supply adapts with AC220V, DC220V, DC110V, AC110V;
2 RS485 serial communication, IEC 60870-5-101, 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.
 

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 switchgear interlocking

Data sheet

Function		Specification
		-F	-C	-M	-T	-B	0	-DB
Hardware	Current acquisition	8	8	8	8	6	0	6
Resource	Voltage acquisition	4	4	4	4	6	4	6
	Switch Collection	16	16	16	16	16	16	16
	Relay Output	10	10	10	10	10	10	10
Protection	Three-stage overcurrent protection	√			√
	Three-stage overcurrent with direction blocking	√
	Two-stage overcurrent protection		√	√		√		√
	Zero-sequence overcurrent protection	√	√	√	√
	Inverse time overcurrent protection	√	√	√	√	√
	Overload protection	√		√	√
	Control circuit disconnection alarm	√	√	√	√	√		√
	Under-voltage protection			√			√alarm
	Lack of voltage protection	√
	PT disconnection alarm	√	√	√	√	√	√	√
	Three-phase one-time reclosing	√
	Low-frequency load shedding	√
	High-frequency protection	√
	After accelerating overcurrent	√				√		√
	Overvoltage protection	√	√	√			√alarm	√alarm
	Locked-rotor protection
	Undervoltage protection		√
	Unbalanced voltage protection		√	√
	Unbalanced current protection		√	√
	Phase error protection			√
	Zero sequence overvoltage protection	√	√	√			√alarm
	Non-electric protection	√	√	√	√
	Starting over time			√
	Reverse power protection	√
	Thermal overload protection			√
	Negative sequence overcurrent			√
	(two stages / inverse time limit)
	Incoming line / busbar					√		√
	Busbar charging protection					√
	FC blocking	√	√	√	√
	Second harmonic blocking	√	√	√	√
	Intermittent ground protection	√	√
	Overhaul status lockout	√	√	√	√	√	√	√
Communication protocol	ModBus-RTU	√	√	√	√	√	√	√
	IEC60870-5-103	√	√	√	√	√	√	√
Accessibility	Fault recorder	√	√	√	√	√		√
	IRIG-B time synchronization	√	√	√	√	√	√	√

Dimensions and Wirings

FAQ

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

A: 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.


Q: For AM5, if you want to place single circuit protection and transformer protection, how to distinguish the model?

A: AM5-F is suitable for line protection and transformer protection.No need to distinguish between models when placing orders


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

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


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

A: 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)


Q: How to purchase suitable protection devices?

A: 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.