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APPLICATION

EM451TH SINGLE PHASE ELECTRONIC FRONT BOARD INSTALLED ANTI-STEAL ACTIVE ENERGY METER

Application
Model EM451TH single phase electronic front board installed anti-steal active energy meter is a kind of new style single phase two wire active energy meter, 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 AC electricity net, it is use for setting indoor or outdoor meter box, and it can display total energy consumption by step motor type impulse register. It has following features: good reliability, light weight, specious nice appearance, convenient installation, etc.

Functions and features
● Front board three fixed installation. 
● Standard configuration 5+1 digits display (99999.1kWh) by step motor type impulse register. May select 6+1 digits display (Product Configuration code is DC). 
● Standard configuration one port of pulse output passive (polarity), May select increase a distant port of pulse output passive(nonpolarity). And contact with all kind of AMR system conveniently, complying with standard IEC 62053-31 and DIN 43864. 
● Three LED instructions power supply state (green) and signal of energy impulse (red) and signal of fault (yellow). 
● Standard configuration don’t detect direction of the trend of load current. May select automatic detecting the direction of the trend of load current. And instructions (Only red energy pulse signal when working, that is meaning the direction of the flow of load current reverse). Please specified when ordering.
● Single direction two components measure single phase two wire active energy consumption. It is nothing with direction of the trend of load current. Complying with standard IEC 62053-21. 
● Automatic detect the currents of phase and neutral line. Then take the bigger current between them to measure. When the error between these two currents is more than 12.5%, it will display the fault signal automatically. This function can protect the tamper on earth and distributary tamper.   
● The specialized step motor type impulse register equips with a cover of anti-turn and strong anti-magnet. This function can protect the AC or DC strong magnet tamper made by person.    
● Direct connect operation, there are two types wiring you may select. Standard configuration type 1A wiring, may select type 1B wiring (Product Configuration code is AG). 
● Standard configuration short terminals cover, may select extended terminals cover, in order to protect to use safely. (Product Configuration code is TH).

Technical parameters 

 Model

Accuracy

Reference
voltage (V)

Current
specifications (A)

Starting
current (A)

Insulation
performance

 EM451TH

Class 1

127
230

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 voltage or current specification, please advisory our sales personnel.

Outer and mount dimension

Wiring diagram (Type 1B)

Terminal

 Note

1 Inlet phase line
3 Outgoing phase line
4 Inlet neutral line
6 Outgoing neutral line
2 and 5 Port of pulse output passive