Eastron SDM72CT-M-2T Bedienungsanleitung
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Eastron SDM72CT-M User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883
Address: No.52 Dongjin Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com
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Measures kWh, kVArh, W, Var, VA, PF, Hz, V, A etc.
Bi-directional measurement IMP & EXP
Two pulse outputs
RS485 Modbus
Din rail mounting 35mm
1/5A CT connection
Better than Class 1/ B accuracy
SDM72CT-M-2T
Three Phase Four Wire Energy Meter
User Manual V1.0
2023
Eastron SDM72CT-M User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883
Address: No.52 Dongjin Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com
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Introduction
The SDM72CT-M-2T is digital three phase 4 wire energy meter with a white back-lighted LCD screen for perfect
reading. The unit measures and displays the characteristics of three phase four wires(3p4w) supply, including
voltage, frequency, current, power ,active and reactive energy, imported or exported. Energy is measured in terms
of kWh, kVArh. The requisite current input(s) are obtained via current transformers(CT).
This meter can be configured to work with a wide range of CTs, giving the unit a wide range of operation. Built-in
interfaces provides pulse and RS485 Modbus RTU outputs. Configuration is password protected
PART 1 Specification
General Specifications
Voltage AC (Un) 3x230(400)V
Voltage Range 80~120% Un
Base Current (Ib) 5A CT input
Max. Current (Imax) 120% of Ib AC
Mini Current (Imin) 5% of Ib AC
Starting current 0.4% of Ib
Power consumption <2W/10VA
Frequency 50/60Hz
AC voltage withstand 4KV for 1 minute
Impulse voltage withstand 6KV-1.2uS wavform
Overcurrent withstand 20Imax for 0.5s
Pulse output rate Configurable ( Pulse 1)
1000imp/kWh (Pulse 2)
Display LCD with backlit
Max. Reading 9999999kWh
Active energy Class 1 IEC62053-21
Unit Characteristics
The Unit can measure and display:
Line voltage of all phases
Frequency
Line Currents of all phases
Power and power factor
Active energy imported and exported
Reactive energy imported and exported
Two pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from
another display or a computer.
Eastron SDM72CT-M User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883
Address: No.52 Dongjin Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com
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Current Transformer Primary Current
The unit can be configured to operate with CT ratio between primary current and secondary current. The
secondary CT has two options: 1A/5A
RS485 Serial Modbus RTU
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This unit 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.
Pulse output
The unit provides two pulse outputs. Both pulse outputs are passive type.
Pulse output 1 is configurable. The pulse output can be set with Modbus protocol:
0.01 kWh / imp
0.1 kWh / imp
1 kWh /imp
10 kWh / imp
100 kWh /imp
Pulse width: 200/100(default)/60ms can set with Modbus protocol.
Pulse output 2 is non-configurable. It is fixed up with total kWh. The constant is 1000imp/kWh.
RS485 Output for Modbus RTU
For Modbus RTU, the following RS485 communication parameters can be configured from the Set-up menu:
Baud rate 2400, 4800, 9600, 19200, 38400bps
Parity none (default)/odd/even
Stop bits 1 or 2
RS485 network address nnn – 3-digit number, 001 to 247
Modbus™ Word order Hi/Lo byte order is set automatically to normal or reverse. It cannot be configured
from the set-up menu.
Environment
Operating temperature -25 to +55℃ ℃
Storage and transportation temperature -40 to +70℃ ℃
Reference temperature 23 2℃± ℃
Relative humidity 0 to 95%, non-condensing
Altitude up to 2000m
Warm up time 5s
Installation category CAT III
Mechanical Environment M1
Electromagnetic environment E2
Degree of pollution 2
Mechanics
Produktspezifikationen
| Marke: | Eastron |
| Kategorie: | Messung |
| Modell: | SDM72CT-M-2T |
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