Automatic 0.1 Accuracy Electric Energy Meter Calibration Of Single Phase Energy Meter

General

Power supply

220V±30%

Power consumption

＜300VA

Ambient temperature

-20℃~40℃

Relative humidity (not condensing)

40%~95%

Dimension(L×W×H, mm)

400×320×160

Weight

＜10Kg

Warm-up  time

10min

MTBF (Mean Time Between Failures)

≥50000hrs

Life time of whole set

≥10Yrs

LCD color display

8”, 800×600 TFT

Communication port

RS232, USB

Output voltage

Measuring range

30V~240V

Adjusting range

30V~240V continue adjustment

Adjusting fineness

0.002%

Distortion

≤2%

Capacity

≥10VA/position

Output current

Measuring range

0.01~80A

Adjusting range

0.01~80A  continue adjustment

Adjusting fineness

0.002%

Distortion

≤2%

Capacity

≥70VA/position

Starting output current

10mA

Output power

Stability

≤0.03%/2min

Output phase

Adjusting range

0°~360°

Adjusting fineness

0.01°

Output frequency

Adjusting range

45~65Hz

Adjusting fineness

0.01Hz

Reference meter

Accuracy class

0.1(direct connection), 0.3 (connected via clamp-on CT’s)

Testing positions

1~3

Monitoring

Voltage

Accuracy: 0.1

6 digits displayed

Resolution: 0.1%

Current

Accuracy: 0.1

6 digits displayed

Resolution: 0.1%

Phase

Accuracy: 0.2°

6 digits displayed

Resolution: 0.2°

Frequency

Accuracy: 0.01Hz

6 digits displayed

Resolution: 0.01Hz

Standard deviation estimates

≤0.02%

Phase differences

Voltage: ≤0.3

Current: ≤0.3

Reference time standard

Frequency: 1Hz, 500kHz (TTL level)

Stability: 2×10^-8/day

Accuracy: 2×10^-7

Insulated resistant

Output voltage/current loops to enclosure:＞10MW

Output voltage loop to current loop:＞10MW

Current to enclosure:＞10MW

Withstand voltage

Output voltage/current loops to enclosure: 2000V/min, 50Hz

Output voltage loop to current loop: 2000V/min, 50Hz   

Current to enclosure: 2000V/min, 50Hz