MB421AC energy meter, din rail installation 7 digits LCD display, 5+2 digits(99999.91kWh CT operation Class 1 accurancy
MB421AC energy meter, din rail installation,meter
Functions and features1.35mm standard DIN rail installation, complying with standard DIN EN50022. Or front board installed (mounting holes center distance 63 mm), users can choose any one by themselves. 2. Ten pole width (Modulus 12.5mm), complying with standard JB/T7121-1993. 3. Type S wiring (Inlet from bottom, outlet from top), use CT connect operation, may select 27 CT ratio, the meter will read directly after set, and needn’t multiplied by CT rate. 4. 7 digits LCD display, 5+2 digits(99999.91kWh, Only when CT ratio 5:5A) or 7 digits display. It is choose by the CT ratio which is set. 5. Six LED instructions power supply state and signal of active energy impulse and reactive energy impulse and data communications state. 6. Standard configuration short terminals cover, may select extension terminals cover, in order to protect to use safety. (Product Configuration code is AF).
Technical parameters:
Model | Accuracy | Reference Voltage(V) | Current specifications(A) | Starting current(A) | Insulation performance |
MB421AC | Active class 1 Reactive class2 | 3×127/220 3×230/400 | CT/5A | 0.01 | AC voltage 4kv for 1 minute, 1.2/50us waveform impulse voltage 6kv |
Dimension
Wiring diagram (Type S)
| Terminal | Note | Terminal | Note |
| L1 | L1 phase CT | 9 | L1 phase line |
| L2 | L2 phase CT | 11 | L2 phase line |
| L3 | L3 phase CT | 13 | L3 phase line |
| (Inlet from bottom, outlet from top) | N | Neutral line | |
| 7 and 8 | Port of active pulse output passive | 5 and 6 | Port of RS485 data communication |
| 3 and 4 | Port of reactive pulse output passive | 1 and 2 | CT ratio and stet SO output pulse rate |
KWH energy meter
