Eastron SDM72CT-M Manual de usuario

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan 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

Three Phase Four Wire Energy Meter

User Manual V1.0

2018

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

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Introduction

The SDM72CT-M 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

Class B EN50470-3

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

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

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Two pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from

another display or a computer.

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

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

1000=1000 kWh/kVArh

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 1200,2400, 4800, 9600

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 10s

Installation category CAT III

Mechanical Environment M1

Electromagnetic environment E2

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

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Degree of pollution 2

Mechanics

Din rail dimensions 72x100x66 (WxHxD) DIN 43880

Mounting DIN rail 35mm

Sealing IP51 (indoor)

Material self-extinguishing UL94V-0

PART 2 Operation

Initialization Display

When it is powered on, the meter will initialize and do self-checking.

Full Screen

Software Version

Total active energy(kWh)

Total=Import+ Export

Max read: 9999999 kWh

Buttons function

There are two buttons on the front panel.

>Scroll the display for data checking.

>Changing option at Set-up mode

>Exit the Set-up mode

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

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Scroll display

>Set-up mode entry

>Confirmation

After initialization and self-checking program, the meter display the measured values. The default page is total

kWh. If the user wants to check other information, please press the scroll button on the front panel.

Total active energy(kWh)

Total=Import+ Export

import energy

export energy

Total reactive energy (kVArh)

Imp reactive energy

Exp reactive energy

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

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Voltage L1

Voltage L2

Voltage L3

Current L1

Current L2

Current L3

Total active power (W)

Active power L1

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

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Active power L2

Active power L3

Total reactive power (VAr)

Reactive power L1

Reactive power L2

Reactive power L3

Total apparent power ( VA)

Apparent power L1

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

- 8 -

Apparent power L2

Apparent power L3

Total Power Factor

Power Factor L1

Power Factor L2

Power Factor L3

Frequency

CT ratio

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

- 9 -

Pulse Constant

Modbus Address

Baud Rate

Parity

Set-up Mode

To get into Set-up Mode, the user need press the “Enter” button for 3 second.

Page

Display

Descriptions

Password

To get into Set-

up mode, it asks a password

confirmation. Default password: 1000

Use and to enter correct password.

The entering information is wrong. The operation fails.

Keep pressing for 3 second, the current selection

will flash, use and to change the Modbus

address. Options: 1~247

Eastron SDM72CT-M User Manual

Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883

Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com

- 10

Keep press for 3s to confirm the selection.

Keep pressing for 3 second, the current selection

will flash, use and to change the Baud rate.

Options: 1.2k, 2.4k,4.8k,9.6k ( default )

Keep press for 3s to confirm the selection.

Keep pressing for 3 second, the current selection

will flash, use and

to change the Parity.

Options: EVEN,ODD,NONE ( default )

Keep press for 3s to confirm the selection.

Use to select the CT ratio option. Keep pressing

for 3 second, the current selection will flash, use

and

to enter the CT Ratio. The range is

from 0001 to 2000. For example, if using a 100A/5A

current transformer, you shall enter 0020.

Keep press for 3s to confirm the selection.

5-1

Use to select the Password option. Keep

pressing for 3 second, the current selection will

flash, use and

to enter the new

password. The range is from 0001 to 9999.

Keep press for 3s to confirm the selection.

6-1

Keep pressing button to exit the set-up mold.

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