Epever EP-GEM-120CT-P Energy Meter User Manual

Epever EP-GEM-120CT-P Energy Meter

Product Specifications

Display Max. Reading:

99999.9kWh (SDM120 45A), 999999 kWh (SDM120 CT)

Accuracy:

• Voltage: 0.5% of range maximum
• Current: 0.5% of nominal
• Frequency: 0.2% of mid-frequency
• Power factor: 1% of Unity
• Active power: 1% of range maximum
• Reactive power: 1% of range maximum
• Apparent power: 1% of range maximum
• Active energy: Class 1 IEC62053-21
• Reactive energy: Class B EN50470-3 (MID product only)

Environment:

• Operating temperature:
• Storage and transportation temperature:
• Reference temperature:
• Relative humidity:
• Altitude: up to 2000m
• Warm up time: 3s
• Mechanical environment: M1
• Electromagnetic environment: E2
• Degree of pollution: 2

Mechanics:

• Din rail dimensions: 18x119x62 (WxHxD)
• Mounting: DIN 43880 DIN rail 35mm
• Sealing: IP51 (indoor) self-extinguishing UL94 V-0

Product Usage Instructions

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

Full Screen Display:
Lasts for 3 seconds.

Software Version Display:
Lasts for 3 seconds.

*Ct1(SDM120CT only) – Primary Current:**
Ranges from 1A to 9999A with a default of 5A.

Total Active Energy(kWh) Display:
After self-checking, the meter screen displays the total active energy (kWh).

Scroll Display by Button:
The button on the front panel allows scrolling through measured values. Pressing for 3 seconds enters set-up mode.

Frequently Asked Questions (FAQ)

Q: How do I set the CT ratio for the MID version of SDM120CT?
A: Before setting the CT ratio, ensure the CT connected to the meter. For example, if the CT is 100/5A, set CT1 to be 100.

• Measures kWh, kVarh, kW, kVar, kVA, PF, Hz, dmd, V, A, etc.
• Bi-directional measurement IMP & EXP
• Two pulse outputs
• RS485 Modbus RTU / Mbus
• Din rail mounting 18mm
• 45A direct connect / 5A or 100mV CT Connect
• Better than Class 1 accuracy

Introduction

This document provides operating, maintenance and installation instructions of SDM120 series. The unit measures and displays the characteristics of single phase two wires application. It provides voltage, current, power,frequency, power factor and energy information. SDM120 series has both direct connect types and 5A or 100mV CT operated types. The direct connect type can work with direct load 45A.
Two Pulse outputs and 1 remote communication port are provided.

This series covers 7 models:

Specifications

General Specifications

• Voltage AC (Un)   230V

• Voltage Range   176~276V AC

• Current Input   0.25~5(45)A (SDM120 45A)
  0.25~5(6)A (SDM120 CT)

• Power consumption   <2W/10VA

• Frequency   50/60Hz (50Hz only for MID version)

• AC voltage withstand       4KV for 1 minute

• Impulse voltage withstand     6KV-1.2uS wavform

• Overcurrent withstand      30Imax for 0.01s (SDM120 45A)
  201max for 0.01s (SDM120CT)

• Pulse output rate      1000mp/kWh (default)
  1000/100/10/1 imp/kWh/kVarh (configurable)

• Display      LCD with white backlit

• Max. Reading   99999.9kWh (SDM120 45A)
  999999 kWh (SDM120 CT)

Accuracy

• Voltage   0.5% of range maximum

• Current   0.5% of nominal

• Frequency   0.2% of mid-frequency

• Power factor   1% of Unity

• Active power  1% of range maximum

• Reactive power    1% of range maximum

• Apparent power 1% of range maximum

• Active energy      Class 1 IEC62053-21
  Class B EN50470-3 (MID product only)

• Reactive energy  1% of range maximum

Environment

• Operating temperature -25°C to +55°C

• Storage and transportation temperature    -40°C to +70°C
  Reference temperature   23°C ÷2°C

• Relative humidity    0 to 95%. non-condensina
  Altitudeup to 2000m

• Warm up time   3s

• Mechanical environment M1

• Electromagnetic environment E2

• Degree of pollution   2

Mechanics

• Din rail dimensions 18x119x62 (WxHxD) DIN 43880
• Mounting DIN rail 35mm
• Sealing   IP51 (indoor)
• Material self-extinguishingUL94V-0

Display

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

After the self-checking program, the meter screen will display the total active energy (kWh)

Note: For the MID version of SDM120CTM, SDM120CTMB and SDM120CTP, theCT ratio can be set only once. Before you set the CT ratio, please check the ratio of the CT connected to the meter. For example, if the CT is 100/5A, please set CT1 to be 100.

Scroll Display by button
There is a button on the front of the meter. 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, he needs to press the scroll button on the front panel.

The display of each model:

Communication

Pulse Output
The meter is equipped with 2 pulse outputs, which are fully isolated from the inside circuit. That generates pulses in proportion to the measured energy. The pulse outputs are polarity dependent , passive transistor output requiring an external voltage source for correct operation. For this external voltage source, the voltage shall be 5-27V DC, and the maximum input current shall be 27mA DC.

ATTENTION: Pule output must be fed as shown in the wiring diagram below.Scrupulousil respect polarities and the connection mode. Opto-coupler with potential-free SPST-NO Contact.

• Contact range:5~27VDC Max.current
• Input:27mA DC

Pulse Output 1 ( SDM120M/ MB/CTM/CT-MV/CTM only)
Pulse output 1 is configurable. The pulse output 1 can be set to generate pulses to represent total / import/ export kWh or kVarh. The pulse constant can be set to generate 1 pulse per: 0.001 ( default) / 0.01 /0.1 /1kWh /kVarh.
Pulse width: 200 / 100/ 60ms ( default)

Pulse Output 1 ( SDM120P and SDM120CTP only)
Pulse output 1 is non-configurable. It is fixed up with Export kWh.
The constant is 1000imp/kWh.

Pulse Output2
Pulse output 2 is non-configurable. It is fixed up with Import kWh. The constant is 1000imp/kWh.

• The Pulse width: 60ms

RS485 output for Modbus RTU (SDM120M and SDM120CTM/CT-MV only)

The meter provides a RS485 port for remote communication. Modbus RTU is the protocol applied. For Modbus RTU, the following RS485 communication parameters can be configured from the Set-up menu.

• Baud rate: 1200, 2400, 4800, 9600
• Parity: NONE/EVEN/ODD
• Stop bits: 1 or 2
• Modbus Address: 1 to 247

M-Bus communication EN13757-3 (SDM120MB and SDM120CTMB only)

The meter provides an M-Bus port for remote communication. The protocol fully comply with EN13757-3.The following communication parameters can be configured via M-bus communication.

• Baud rate: 300,600, 2400, 4800, 9600
• Parity: NONE/EVEN/ODD
• Stop bits: 1 or 2
• M-Bus network primary address: nnn – 3 digits number from 001 to 250
• M-Bus network secondary address: 00 00 00 00 to 99 99 99 99

Please contact us for the detailed Modbus/M-Bus communication protocol.
sales@eastrongroup.com

Dimensions

Installation

Safety instruction
Information for your own safety

This manual does not contain all of the safety measures for operation of the equipment(module,device),because special operating conditions,and local code requirements or regulations may necessitate further measures. However,it does contain information which must be read for your personal safety and to avoid material damages.This information is highlighted by a warning triangle and is represented as follows, depending on the degree of potential danger.

Warning
This means that failure to observe the instruction can result in death, serious injury or considerable material damage.

Caution
This means hazard of electric shock and failure to take the necessary safety precautions will result in death,serious injury or considerable material damage.

Qualified personnel
Operation of the equipment (module, device) described in this manual may only be performed by qualified personnel. Qualified personnel in this manual means person who are authorized to commission, start up, ground and label devices,systems and circuits according to safety and Regulatory standards.

Proper handling
The equipment (device, module) may only be used for the application specified in the catalogue and the user manual,and only be connected with devices and components recommended and approved by EASTRON.

• Use only insulating tools.
• Do not connect while circuit is live (hot).
• Place the meter only in dry surroundings.
• Do not mount the meter in an explosive area or expose the meter to dust, mildew and insects.
• Make sure the used wires are suitable for the maximum current of this meter. Make sure the AC wires are connected correctly before activating the current/voltage to the meter.
• Do not connect the meter to a 3 phase – 400VAC – network.
• Do not touch the meter connecting clamps directly with your bare
• hands, with metal, blank wire or other material as you may get an electrical shock.
• Make sure the protection cover is placed after installation.
• Installation, maintenance and reparation should only be done by qualified personnel.
• Never break the seals and open the front cover as this might influence the functionality of the meter, and will avoid any warranty.
• Do not drop, or allow physical impact to the meter as there are high precision components inside that may break.

Installation

Wiring diagram

Declaration of Conformity (for the MID approved version meter only)
We Zhejiang Eastron Electronic Co., Ltd. declares under our sole responsibility as the manufacturer that the single phase multifunction electrical energy meter SDM120 series correspond to the production model described in the EU-type examination certificate and the requirements of the Directive 2014/32/EU. Type examination certificate number 0120/SGS0141. Identification number of the Notified Body: 0120.

Zhejiang Eastron Electronic Co.,Ltd. No 1369. JiaxingChengnan Rd. , Zhejiang,China
Tel:86 573 83698881/83698882
Tel:86 573 83698883
Email:sales@eastrongroup.com
Web:www.eastrongroup.com

References

• Electricity Meters Manufacturers, Smart Meters Factory

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