This position indicator type HMC-3C is applied with motor drive units of CAM7 and CMA9 (hereinafter referred as MDU) of on-load tap changer, and it can display the actual position of tap changer, there are three buttons "1-N", "stop" and "N-1" on the front panel, beside them is an indication lamp of "Remote Control". The input signal for position indication is decimal code and output BCD code.
HMC-3C adopts LED digital tube to display the positions and it characterizes as high stability and
reliability, the plastic housing of HMC-3C make it light-weighted, small-sized, easy and safe to operate.
(1) Power supply : 220V AC (Note: special power supply upon request)
(2) Power frequency : 50 Hz or 60 Hz
(3) Maximum indication position : 35
(4) Operating temperature : -10~40
Indicator Terminals | X1 Terminal of MDU | Remarks |
1 | 8 | 1-N |
2 | 12 | Stop |
3 | 9 | N-1 |
4 | 11 | Common |
5 | 23 | “Remote Control”indication |
6 | 24 |