25 Year OEM,ODM$OBM Special Circuit Break Manufactory In China
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APPLICATION

EM321DI THREE PHASE FOUR WIRE ELECTRONIC FRONT BOARD INSTALLED ACTIVE ENERGY METER

Application
Model EM321DI three phase four wire electronic front board installed active energy meter is a kind of new style three phase four 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 three phase active energy meter stipulated in international standard IEC 62053-21. It can accurate and directly measure 50Hz or 60Hz active energy consumption from three phase four wire AC electricity net, it is use for setting indoor or out door, 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 is 198-212 mm, users can choose any one by themselves.
● Standard configuration 6 digits display (999999KWh) by step motor type impulse register, may select 7 digits display (Product Configuration code is DK)
● There are a polarity port of pulse output passive closed and a nonpolarity port of pulse output passive distant (the output rate is 10 or 100 imp/kWh, can select). And contact with all kind of AMR system conveniently, Complying with standard IEC 62053-31 and DIN 43864.
● Five LED instructions respectively power supply state and signal of closed energy impulse and distant energy impulse.
● Automatic detection the direction of the flow of load current. And Instructions on individual LED.
● Single direction three components measure three phase four wire active energy consumption. It is nothing with direction of the flow of load current. Complying with standard IEC 62053-21.
● Standard configuration direct connect operation, type 16B wiring, we can also choose another type of wiring, and use 5+1 digits display by impulse register, CT (Product Configuration code is CI) and PT & CT (Product Configuration code is BI) for operation, it is type 48B wiring.
● Standard configuration extension terminals cover, in order to protect to use safety may select short terminals cover. (Product Configuration code is DF).

Technical parameters

 Model

Accuracy

Reference
voltage (V)

Current
specifications (A)

Starting
current (A)

Insulation
performance

 EM321DI

Class 1

3X127/220
3X230/400

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 16B)

Terminal

 Note

1 Inlet L1 line
3 Outgoing L1 line
4 Inlet L2 line
6 Outgoing L2 line
7 Inlet L3 line
9 Outgoing L3 line
10 Inlet neutral line
11 Outgoing neutral line
18 and 19 Port of pulse output passive distant
20 and 21 Port of pulse output passive closed