20
THD%-F (model 157 only)
RANGE
Harmonic order
Accuracy
1)
Fundamental
1.5% + 6d
2nd ~ 3rd
7% + 6d
4th ~ 21st
2.5% + 6d
2) 3)
0.0% ~50.0%
22nd ~ 51st
10% + 10d
4)
2nd ~ 3rd
Unspecified
4th ~ 21st
2.5% + 6d
5) 6)
50.0% ~100%
22nd ~ 51st
10% + 10d
4)
2nd ~ 3rd
Unspecified
4th ~ 21st
7% + 6d
2) 4)
100% ~450%
7)
22nd ~ 51st
Unspecified
THD%-F is defined as: (Total Harmonic RMS / Fundamental RMS) x 100%
1)
Accuracy specified @ fundamental 70V & Total RMS 600V for ACV THD%-F,
fundamental 6A & Total RMS 1000A for ACA THD%-F, and Crest Factors @ :
< 2.5 for 600V Range
< 2.5 for 40A Range
< 3.0 for 400A Range
< 1.6 for 1000A Range
2)
Add 4d to specified accuracy @ 40A Range
3)
Add 4.5% to specified accuracy @ 1000A range
4)
Unspecified @ 1000A range
5)
Add 1% + 4d to specified accuracy @ 40A Range
6)
Add 4.5% to specified accuracy @ 400A ~ 750A; unspecified @ > 750A
7)
~150% for 600V Range
Frequency
RANGE
Accuracy
5Hz ~ 500Hz
0.5%+4d
Sensitivity (Sine RMS)
40A range: > 4A
400A range: > 40A
1000A (600A for model 357) range: > 400A
600V range: > 30V
