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Fluke 434/435
Users Manual
23-6
Harmonics Measurement Range Resolution Accuracy
Harmonic order (n) DC, 1..50 Grouping: Harmonic groups according to IEC 61000-4-7
Inter-Harmonic order Off, 1..49 Grouping: Harmonic and Interharmonic subgroups according to IEC
61000-4-7
Filtering When measuring harmonics with interharmonics off, harmonics group is used
and a 1.5 s smoothing filter is active.
When measuring harmonics with interharmonics on, harmonics subgroup and
interharmonics centered subgroup are used and no filter is active.
Vrms Relative (%f):
Fluke 435 Absolute:
Fluke 434 Absolute:
0.0 … 100.0%
0.0 … 1000 Vrms
0.0 … 1000 Vrms
0.1%
0.1 Vrms
0.1 Vrms
± 0.1% ± n x 0.1%
(± 0.4% for %r)
± 0.05% of nominal
voltage if < 1% of
nominal voltage
± 5% if ≥ 1% of nominal
voltage
± 5% ± 2 counts
Arms Relative (%f):
Absolute:
0.0 … 100.0%
0.0 … 4000 mV x clamp
scaling
0.1%
1 mVrms x clamp scaling
± 0.1% ± n x 0.1%
(± 0.4% for %r)
± 5% ± 5 counts
Watts Relative:
(Harmonics only)
Watts Absolute:
(Harmonics only)
0.0 … 100.0%
depends on clamp and
voltage scaling
0.1%
± n x 2%
± 5% ± n x 2% ± 10
counts
DC Relative:
Fluke 435 Absolute V:
Fluke 434 Absolute V:
Absolute A:
Absolute W:
0.0 … 100.0%
0.0 … 1000V
0.0 … 1000V
0.0 … 4000 mV x clamp
scaling
depends on clamp and
voltage scaling
0.1%
0.1V
0.1V
1 mVrms x clamp scaling
0.1V
depends on scaling
± 0.1% V and A (± 2%
Watt)
± 0.2% of nominal
voltage
± 5% ± 10 counts
± 5% ± 10 counts
± 5% ± 10 counts
THD
(n=40)
(relative %f or
%r)
0.0 … 100.0 % 0.1% ± 2.5% V and A (± 5%
Watt)
Hz 0 … 3500 Hz 1 Hz ± 1Hz
Phase angle
Fluke 435
Fluke 434
-360º ... +0º
-360º ... +0º
1º
1º
± n × 1º (
8
)
± n × 1.5º (
8
)