Standards:
DL/T689-1999, GB/T17215.321-2008, GB/T17442-1998, DL/T645-2007 and other correlative Chinese standards;
IEC61036:2000 and other correlative international standards. 

Technical Parameters：

1. Specification table：

1. Accuracy: class 0.5s & class 1.0 for active, class 2.0 for reactive
2. Rated frequency: 50H/60Hz
3. Display type: Counter or LCD display
4. Start current: 0.1% In for active (class 0.5s)
5. Creep: with the logic design of anti-potential action.
6. Normal working voltage: 0.8Un~1.1Un
7. Limited working voltage: 0.75Un~1.2Un
8. Power loss:

Voltage circuit loss ≤2W (5VA)
Current circuit loss < 1VA

1. Data Reserved battery voltage 3.6VDC
2. Power failure drawing battery voltage 6.0 VDC
3. Battery capacity: ≥ 1000mAh
4. Percentage error range: Accord with GB/T17215.321-2008 demand
5. The depth of relaying: 3 grades
6. Transmit the distance in communication: Electric backbone 3km
7. Keep the term of validity for 30 years in data
8. Weight: 2.4kg

Normal operation and installation conditions:
1、Normal operation temperature：-25℃～+55℃;
2、Limited operation temperature：-40℃～+70℃;
3、Relative humidity：less than 85%；
4、No corrosive in the air.

Main function:

1. Realize concentrating on checking meter
2. The way carry on the communication of the electric signal carrier to adopt the software to expand frequently, accurate, reliable, ability of checking meter is strong
3. Automatic relaying function each other
4. Possess the function of freezing the electric energy meter data
5. The meritorious eclectic energy is measured accurately, working for a long time need not adjust
6. Adopting the manganese copper shunt as the return circuit of electric current ,overload capacity is upto more than 6 times
7. Have anti-steal electric functions