... -larceny proof, high precision, high reliability, high overload, low power consumption, small volume, low weight, etc.; it can be ... : 1. Accurately measure electricity energy with the active & reactive power in the three-phase AC 2. Automatically prevent electricity theft ... IDT) GB/T17882-1999 (IEC61286: 1995,EQV) DL/T645-1997 Precision level: Active power: Level 1 and 2 Reactive power: Level 2 and ...