Influence quantity

Test items

Reference condition

Working conditions

Ambient temperature

All parameters

(23± 2) ° C

-10Lt; 0 & gt; C~ 40Lt; 0 & gt; C

Relative humidity

All parameters

40%~ 60%

<80%

Phase voltage

All parameters

(100± 1%) V

1.0V~ 1000V

Line voltage

Line voltage true RMS

(200± 1%) V

1.0V~ 2000V

Current

True RMS current measurement

(5± 1%)

10mA~ 1000A

Grid frequency

All parameters

50Hz ± 0.1Hz

40Hz ~ 70Hz

Phase shift

Measurement of active power active energy

Cos Φ = 1

Cos Φ: 0.2~ 1.0

Measurement of Reactive Power Reactive Energy

Sin Φ = 1

Sin Φ: 0.2~ 1.0

harmonic

All parameters

<0.1%

0.0%~ 100%

Voltage unbalance degree

All parameters

<10%

0.0%~ 100%

Instrument operating voltage

All parameters

DC9.8V± 0.1V

DC9.5V~ 10.5V

External electric field, magnetic field

All parameters

Should be avoided

The position of the wire to be tested

Measure current-related parameters

The measured conductor is at the approximate geometric center of the jaw