DIN energy meter specification:
|
Item No |
Accuracy |
Rated voltage Ub |
Rated current(A) |
|
|
1.0级 |
220/380V 57.5/100V |
5A/CT、5(20)、5(30)、10(50)A 10(60)A、15(90)A、20(80)A、20(100)A、5(65)A、5(100)A |
Remark:额定电流栏中,括号前的数值为标定电流值Ib,括号内的数值为额定最大电流值Imax。
2.2.1 误差限:
带有平衡负载时电能表的基本误差限
Current value |
PF(COSΦ) |
百分数误差限(%) |
||
direct input |
input via CT |
class 1 |
class 2 |
|
0.05Ib |
0.02 Ib |
1.0 |
±1.5 |
±2.5 |
0.1 Ib |
0.05 Ib |
0.5L |
±1.5 |
±2.5 |
0.8C |
±1.5 |
— |
||
0.1 Ib~1max |
0.05 Ib~1max |
1.0 |
±1.0 |
±2.0 |
0.2 Ib~1max |
0.1 Ib~1max |
0.5L |
±1.0 |
±2.0 |
0.8C |
±1.0 |
— |
Basic error limit of energy meter with single - phase load:
current value |
power factor(COSΦ) |
百分数误差限(%) |
||
direct input |
input via CT |
class 1 |
class 2 |
|
0.1 Ib~1max |
0.05 Ib~1max |
1.0 |
±2.0 |
±3.0 |
0.2 Ib~1max |
0.1 Ib~1max |
0.5L |
±2.0 |
±3.0 |
2.2.2起动
在额定电压、额定频率及COSΦ=1的条件下,当电能表负载电流为下表规定值时,电能表能起动并连续计量电能。
meter type |
class 1 |
class 2 |
direct inpiut |
0.004Ib |
0.005 Ib |
input via CT |
0.002 Ib |
0.003 Ib |
Diagram