General Introduction

DDSM energy meter has special functions and is compatible with many IC cards. It is mostly used for public power use, such as school, hospital, church, shop, office, mansion, and so on. Single- phase and three-phase can be supplied for different conditions.

Main Functions

1. Customer prepays for power at fee-charging center and then gets an IC card, which will keep his purchased power inside after payment. Then if need to use power, customer swipes his IC card on the induction area of energy meter to activate power supply since the multi-customers energy meter is disconnected at ordinary time. After use, customer swipes his IC card again to cut power supply, easy and simply.

2. Used power by different customers will be recorded in their own IC cards automatically, and no confusion or corruption on power supply. No one can use power if no valid IC card. When power stored in IC card is used up, energy meter will stop power supply automatically to alarm customer to buy power again.

3. Several IC cards are compatible with one energy meter.

4. Self-testing and protection, avoid of phase deficiency of three-phase energy meter.