... Three-phase Multi-function Static Energy Meter IEC62053, IEC1107, IEC687 & IEC1268. Three-phase Multi-function Static Energy MeterDTDS3/DSSD2 three phase multi-function energy is the new generation intelligent meter designed by ... , strong function, conbenient operation, etc, and conform to the standards of IEC1036, IEC1107, IEC687&IEC1268. DTSD3/DSSD2 Three-phase Multi-function Static Energy Meter