... It meets standards of IEC62053, IEC1107, IEC687 & IEC1268. Three-phase Multi-function Static Energy Meter1. Electrical performance:Active: 0.5s, 0.5 ... ~999999.99 kvarh, communication baudrate: RS485 1200bps~9600bps, RS485 1200bps, infrared: 1200bps.4. Conformed standards: IEC62053; GB/T17215-2002; DT/T614 ... /T645-1997.5. Life: 10 years. DTSD3/DSSD2 Three-phase Multi-function Static Energy Meter