MB321JF Three Phase Four Wire Electronic Front Board Installed Active Energy Meter
Application
Model MB321JF 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, and this meter has seven digits LCD displays shows the active energy consumption. It has following features: good reliability, small volume, light weight, specious nice appearance, convenient installation, etc.
Functions and features
1. Front board three fixed installation, up and down mounting holes center distance is 198-212 mm, users can choose any one by themselves.
2. Seven digits display LCD, standard configuration 6+1 digits display (999999.1kWh). May select 5+2 digits display (Please specified when ordering).
3. Standard configuration only a polarity port of pulse output passive, may select add a nonpolarity port of pulse output passive distant (Product Configuration code is DH). And contact with all kind of AMR system conveniently, Complying with standard IEC 62053-31 and DIN 43864.
4. Four LED instructions respectively power supply state and signal of energy impulse.
5. Automatic detection the direction of the flow of load current. And Instructions on individual LED.
6. 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.
7. Standard configuration direct connect operation, type 16B wiring, we can also choose another type of wiring, and use CT (Product Configuration code is HF) and PT & CT (Product Configuration code is IF) for operation, it is type 48B wiring.
8. Standard configuration extension terminals cover, in order to protect to use safety, may select short terminals cover. (Product Configuration code is JC).
Technical Data
| Model | Accuracy | Reference Voltage(V) | Current specifications(A) | Starting current(A) | Insulation performance |
| MB321JF | Class 1 |
3 127/2203 230/440 |
5(30) 10(60) 20(100) |
0.02 0.04 0.08 |
AC voltage 4kv for 1 minute, 1.2/50us waveform pulse voltage 6kv |
* If you need different reference voltage or current specification, please advisory our sales personnel.
Dimension
Wiring diagram (Type 16B)
| Terminal | Note | Terminal | Note |
| 1 | L1 inlet phase line | 10 | Inlet neutral line |
| 3 | L1 outgoing phase line | 11 | Outgoing neutral line |
| 4 | L2 inlet phase line | ||
| 6 | L2 outgoing phase line | ||
| 7 | L3 inlet phase line | ||
| 9 | L3 outgoing phase line | 20 and 21 | Port of pulse output passive |
