Hioki 3280-1 OF - Page 24

EN-16
Specifi cations
AC
measurement
method
• 3280-10F: Average value measurement
RMS method
• 3280-20F: True RMS measurement
method
Display update
rate
400 ms±25 ms
Noise rejection
characteristics
NMRR DCV −40 dB or more
(50 Hz/60 Hz)
CMRR DCV −100 dB or more
(50 Hz/60 Hz,
1 k
Ω

unbalance)
ACV −60 dB or more
(50 Hz/60 Hz,
1 k
Ω
unbalance)
But, −45 dB or more
for 600 V range.
Crest factor
(3280-20F only)
For 2500 counts or less, 2.5
Reduces linearly to 1.5 or less at 4200
counts
Zero-display
range
5 counts (AC Current, jaw - fl exible loop)
Effects of
conductor
position
3280-10F, 3280-20F: within ±5.0%
CT6280: within ±5.0%
(At all positions around the sensor’s
centerpoint reference)
Maximum
measurable
conductor
diameter
3280-10F, 3280-20F:

33 mm or less
CT6280:

130 mm or less