Mine Explosion-proof Watt-Hour Meter Box,Electronic
Mine Explosion-proof Watt-Hour Meter Box
Applications
The watt-hour meter box is mainly used to calculate active or reactive electric power energy in the AC power system, with the frequency of 50Hz, current of 200A or 400A, and voltage of 380V or 660V in the coal mine well or other industrial enterprises, with the surrounding medium containing explosive gases (methane). However, it can not be used for the excavating working surface.
Features
The watt-hour meter box is composed of the explosionproof joint box and shell. It’s equipped with the three-phase three-wire active (reactive) watt-hour meter, current transformer and voltage transformer and so on.
Main Technical Parameters
Model
| Rated Voltage (V) | Voltage transformer ratio | Rated Current (A) | Current Transformer ratio | Input current cable OD, φmm |
DBB-200/660(380)S | 380/660 | (380/660)/100 | 200 | 200/5 | 56-63 |
DBB-400/660(380)S |
|
| 400 | 400/5 |
|
