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AM2SE Protection Relay for Medium Voltage 10kV

Programable Digital Inputs

Suitable for Ring Main Unit

8 DI & 5 DO

4 Input Current & 3 Input Voltage

Fault Recorder

ANSI 50N/51/51N/46/49F/27/59N...

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Describe

Acrel AM2SE protection relay is a highly adaptable solution designed for medium voltage (10kV) applications. It features a modular design with programmable digital inputs (8 DI & 5 DO), making it ideal for ring main units and MV switchgear. The relay supports 4 input currents and 3 input voltages, providing flexibility for various feeder protection scenarios.

Equipped with advanced protection functionalities, the AM2SE complies with ANSI standards including 50N, 51, 51N, 46, 49F, 27, and 59N. It includes a fault recorder for detailed event analysis, enhancing system reliability and maintenance efficiency.

The relay offers versatile communication options with support for Modbus-RTU/TCP and IEC 60870-5-103 protocols. Its powerful CPU ensures efficient data processing and integration into modern power systems. Additionally, the AM2SE provides USB connectivity for easy configuration and programmable 4-20mA DC outputs for analog signal transmission.

With its robust design and extensive feature set, the AM2SE protection relay is a reliable choice for safeguarding medium voltage networks, ensuring efficient and secure power distribution.

Specifications

Technical Parameters				Value
Input		Connection		Single phase-2-wire, 3-phase-3-wire, 3-phase-4-wire
		Frequency		45-65Hz
		Voltage		Rating:
				single-phase :AC 100V、400V
				Three-phase: AC 3×57.7V/100V(100V)、3×220V/380V(400V)、3×380V/660V(660V)(96 size only)
				Overload:1.2 fold rating {continuous) : 2 fold rating for 1 second
				Power consumption:< 0.5VA
		Current		Rating: AC IA、5A
				Overload:1.2 fold rating(continuous);10fold rating for 1 second
				Power consumption:< 0.5VA
Output		Electric energy		Output mode:open-collector photo-coupler pulse
				Pulse constant: 10000imp/kWh(settable)，see wiring diagram for details；
		Communication		RS485port, Modbus -RTU protocol,DLT645 protocol(versions 07 and 97)，
				baud rate 1200 ~ 38400
Function		Switching input		Dry contact input, built-in power supply;if the model is KA,it is AC 220V active.
		Switching output		Output mode: Relay normally open contact output
				Contact capacity: AC 250V/3A、 DC 30V/3A
		Analog output		4 - 20mA
Accuracy class				Frequency:0.05Hz,Current、Voltage:0.2 class,Reactive power:l .0class,Reactive Electric energy:l .0class, active power:0.5class,active electric energy: 0.5class,2-31th harmonic measurement:±1%
Power supply				AC/DC 85-265V or DC24V（±20%）or DC48V(±20%)
				power consumption≤10VA
Security	Power frequency withstand voltage			Between Power supply//Switching Output// Current Input//voltage Input and Transmitting// Communication //Pulse Output//switching input AC 2 kV 1min;
				Between Power supply、switching output、Current Input、voltage Input AC 2 kV 1min;
				Between Transmitting、Communication、Pulse Output、switching input AC 1kV 1 min;
	Insulation resistance			Input、Output end to machine enclosure >100MΩ
Environment			Temperature	work: -25°C~+65°C storage: -40°C ~+80°C
			Humidity	≤93%RH Non-condensing
			Altitude	≤2500m

Dimension & Wiring Diagram

Application Scenario

Power Monitoring Solution

Work Site Application

About Acrel

"Optimized Energy Efficiency, Empower Green Future."

Founded in 2003, Acrel Co., Ltd.【Stock Code: 300286.SZ】 is a high-tech enterprise specializing in energy management solutions and electrical safety. Headquartered in Shanghai, Acrel offers innovative and sustainable solutions for microgrid energy efficiency and electrical safety. With over 600 patents and software copyrights, Acrel has deployed more than 28,000 system solutions globally, forming a comprehensive "cloud-edge-end" energy internet architecture.

Acrel's integrated product ecosystem spans from cloud platform software to end-user components, covering sectors such as power, renewable energy, data centers, smart buildings, transportation, and smart cities. These solutions enable intelligent, real-time energy management, enhancing energy security and reducing operational costs.

The company's production facility, Jiangsu Acrel Electric Manufacturing Co., Ltd., adheres to strict quality standards and environmental guidelines, with advanced testing centers and a commitment to lead-free production processes. Acrel's team of over 500 engineers delivers cutting-edge energy efficiency systems and smart energy solutions.

With a strong domestic presence, Acrel is actively expanding internationally, supported by a global network of sales and technical teams and an e-commerce platform that ensures seamless service experiences worldwide. Acrel is proud to help businesses improve efficiency, reduce consumption, and achieve sustainability goals.

Together, we are building a smarter, greener future.