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----OPEN GROUP HOLDING LTD. is located in Liushi, Wenzhou, Zhejiang Province, China. It faces the 104 National Highway that run-through Zhemin Economic Zone, close to Qili Harbor and Wenzhou Airport on the south, close to the scenic spot Yandang Mountain on the north.

Quality assurance and customer satisfaction lead Open Group's top belief. OPEN GROUP HOLDING LTD. is one of the most professional manufacturers producing low-voltage and high-voltage electrical products, power equipment, cables & wires, etc. Through last 10 years' development,OPEN GROUP HOLDING LTD. has grown up as one of the biggest group companies in China, and the products range includes lightings, and lamp. We have over fifty member factories for the products above, and our products include 1,500 series and more than 15,000 industrial components.

We have precious experiences in exporting our products to the Southeast Asian, Australian, European and the American markets. Our products are well-known greatly due to high quality and reasonable price. After more than 10 years' promotion and service in the world, our products are enjoying a great share in the international market.

To present our customer more considerate service, OPEN GROUP HOLDING LTD. has modernized our production equipment, enhanced production technology and management mode. To form designing, producing, quality checking, selling as an organic whole, from quality control of the input of the raw materials and feedback of the after-sale service, etc., we have introduced TQM and other advanced producing methods to ensure the interest of our customers.

The 21st century is the era of the knowledge economy, full of the fierce competitions of technology and managing mode, but meanwhile, we can tell that there are also so many opportunities to get mutual benefits. Welcome domestic and international friends to cooperate cordially with OPEN GROUP HOLDING LTD. We believe with our best efforts, we can create the prosperity and development for both of our business.

 
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  | Low voltage electric >>  Energy meter >> Front Board Mounted >> DEM312 >> DEM312TL
 
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DEM312TL

SINGLE PHASE ELECTRONIC FRONT BOARD INSTALLED ACTIVE ENERGY METER
 
Application

Model DEM312TL single phase three wire electronic front board installed active energy meter is a kind of new style single phase three wire active energy meter, and it adopt micro-electronics technique, and imported large scale integrate circuit, use advanced technique of digital and SMT techniques, etc. The meter completely accord with relevant technical requirements of class 1 single phase active energy meter stipulated in international standard IEC 62053-21. It can accurate and directly measure 50Hz or 60Hz active energy consumption from single phase three wire AC electricity net, it can display total energy consumption by step motor type impulse register. It has following features: good reliability, small volume, light weight, specious nice appearance, convenient installation, etc.

 
Functions and features
Front board three fixed installation, up and down mounting holes center distance 130-147 mm, users can choose any one by themselves.
5+1 digits display (99999.1kWh) by step motor type impulse register.
Standard configuration one port of pulse output passive (polarity), May select increase a distant port of pulse output passive ( no polarity). And contact with all kind of AMR system conveniently, complying with standard IEC 62053-31 and DIN 43864.
Two LED instructions power supply state (green) and signal of energy impulse (red).
Automatic detection the direction of the flow of load current. And instructions by individual LED. (Only yellow energy impulse signal when working, that is meaning the direction of the flow of load current reverse).
Single direction single component measure single phase three wire active energy consumption. It is nothing with direction of the flow of load current. Complying with standard IEC 62053-21.
Direct connect operation, type 2A wiring.
Standard configuration extension terminals cover, in order to protect to use safety, may select short terminals cover. (Product Configuration code is TK).
 
Technical parameters

 Model

Accuracy

Reference
voltage (V)

Current
specifications (A)

Starting
current (A)

Insulation
performance

 DEM312TL

Class 1

240

5(30)
10(60)
20(100)

0.02
0.04
0.08

AC voltage 4kV for 1 minute,
1.2/50us waveform
impulse voltage 6kV

*If you need different reference voltage or current specification, please advisory our sales.
 
Outer and mount dimension
 
Wiring diagram (Type 2A)

Terminal

 Note

1 L1 inlet phase line
3 L2 inlet phase line
4 L3 outgoing phase line
6 L1 outgoing phase line
2 and 5 Port of pulse output passive

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