EASTRON SDM630MV-2L Dual Load User Manual
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Tel: 0086-573-83698881/83698882 Fax: 0086-573-83698883 Web: www.eastron.com.cn
Introduction
SDM630MV-2L Dual Load measures and displays the characteristics of two three phase four wires
circuits, including voltage, frequency, current, power and active and reactive energy, imported or
exported. Energy is measured in terms of kWh, kVArh. Maximum demand current can be
measured over preset periods of up to 60minutes. In order to measure energy, the unit requires
voltage and current inputs in addition to the supply required to power the product. The requisite
current input(s) are obtained via current transformers (CT).
This meter has two RJ12 sockets for fast connecting with current transformer CTs with 0.333V
output. This meter also provides 1 digital output ( solid state) with capability to command most
of the circuit breaker coils directly.
Unit Characteristics
The Unit can measure and display:
L-N voltage and THD% (total harmonic distortion) of all phases
Line Frequency
Currents, Current demands and current THD% of all phases
Power, maximum power demand and power factor
Active energy imported and exported
Reactive energy imported and exported
The unit has password-protected set-up screens for:
Changing password
Supply system 3phase 4wires
CT1 value
PT ratio (1 to 9999)
Demand Interval time
Reset for demand measurements
An RS485 output allows remote monitoring from another display or a computer.
Current Transformer Primary Current
The unit can be configured to operate with Primary Current.
The secondary CT is fixed at 0.333V
RS485 Serial – Modbus RTU
This uses an RS485 serial port with Modbus RTU protocol to provide a means of remotely
monitoring and controlling the Unit
Set-up screens are provided for setting up the RS485 port.
Start Up Screens
