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1.
Safety instructions
Thank you for choosing the meter researched and developed by our company. In order to make it convenient for you
to purchase and use the meter safely, correctly and efficiently, please read this manual carefully before using the product,
and pay attention to several points as follows.
CAUTION:
◆
Make sure only the qualified technicians perform the installation and maintenance;
◆
Before performing wiring operation to the meter, make sure the input signal and the power supply are switched off;
◆
The proper voltage detecting device should be used to guarantee no voltage in any part of the meter;
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The electrical parameters supplied should be within the rated range;
The following situations may result in damages to the meter or cause mistakes in the operation of the meter.
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The voltage of the auxiliary power supply goes beyond the rated range.
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The frequency of the power distribution system goes beyond the rated range.
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The input polarity of the voltage or the current is incorrect.
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Remove or connect the communication plugs without powering off.
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Connect the terminal wires against the related instructions.
Please don’t touch the terminals when the meter is in operation!
2. Product description
2.1 Overview
AR4DCT are used to manage multi-circuit DC power supply such as photovoltaic combiner box. They can measure
basic electrical variables such as voltage, current, power and energy of up to 33 DC circuits. AR4DCT can realize current
measurement of 33 circuits at most, 4 digital inputs and 2 relay outputs. They also have over current alarm, over voltage
alarm, under voltage alarm and DI linkage alarm functions. In addition, AR4DCT has one temperature measurement
function. Communication interface on the meter makes it simple to connect it to smart distribution system and energy
management system to share monitoring data and energy quality data.
2.2 Function
Main module
(AR4DCT / AR4DC)
Function
Instruction
Channel
Current measurement
External Hall sensor input
9
Voltage measurement
Direct input
1
Energy metering
Bi-directional energy
■
Alarm protection
DI linkage alarm protection
■
Temperature alarm protection
■
Over current alarm protection
■
Over voltage alarm protection
■
Under voltage alarm protection
■
Standard communication
RS485(Modbus-RTU)
■
