Acrel ARD3M Motor Management Relay

Name: ARD3M Motor Management Relay
Brand: Jiangsu Acrel Micro-grid Research & Development Institute

ARD3M motor management relay adopts a split structure and is suitable for low-voltage motor circuits with a rated voltage up to 660V. It has complete measurement functions such as current, voltage, power, and electric energy. It can be directly connected to the voltage for 660V explosion-proof motors commonly used in mines. ,and there is no need to install voltage transformers.

Specifications of ARD3M Motor Management Relay

Parameters

Technical Parameters

Accuracy	Active energy: Class 0.5
Frequency	Range: 45-65Hz
Auxiliary power supply	AC/DC 85~265V
Pulse output	1600-160000imp/kWh
Consumption	Voltage: Power consumption <0.5VA
	Current: Power consumption< 0.5VA
	Auxiliary power supply: power consumption≤10VA
Communication	2 Channel Modbus RTU; Profibus DP; Profinet; Modbus TCP; Wifi
Switch	Input 10 channel; Output 6 channel
Analog	2 Channel 4-20mA

Technical parameters	Technical indicators
Protector auxiliary power supply	Support two power modules, AC 220V power module (AC85-265V / DC100-300V) default, AC 380V power module (AC/DC100-415V) optional
The rated working voltage of the motor	AC220V / 380V / 660V or AC230V / 400V / 690V, 50Hz / 60Hz
Rated operating current of the motor	1 (0.1A-5000A)	External current transformer
	5 (0.1A-5000A)
	25 (6.3A-25A)
	100 (25A-100A)
	250 (63A-250A)
	800 (250A-800A)
Relay output contact capacity	Impedance load	AC250V、10A
Switching input	10 channels of passive dry contact (active DC110V, DC220V, AC220V input can be optional)
Communication	Standard supplied	2channel MODBUS RTU communication
Communication	Optional（only one can be selected）	1-2 channel PROFIBUS DPV1communication、1channel PROFINET communication、Ethernet communication（MODBUS TCP protocol）
Environment	Working temperature	-10ºC～55ºC
	Storage temperature	-25ºC～70ºC
	Relative humidity	≤95﹪No condensation, no corrosive gas
	Altitude	≤2000m
Pollution levels	Class 3
Protection grade	Main body IP20, split display module IP54 (installed on the cabinet panel)
Installation category	Level III

Features of ARD3M Motor Management Relay

The protector also provides electrical parameter protections such as overload, stalled rotor, phase failure, and current (voltage) imbalance, as well as non-electrical parameter protections such as limit of starting times and running time alarm;

All protection functions can be switched on and off freely and the protection threshold can be set, and the fault parameters that have occurred can be recorded in real time, which is convenient for accident recall and provides a basis for maintenance;

It provides 10 programmable switch inputs and 6 programmable relay outputs to meet various control and fault output requirements on site;

For special bus communication requirements, there are additional 1-2-way Profibus_DP, Modbus_TCP, Profinet communication modules for customers to choose and match.