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7.3. Technical Data of
N24Z and
N25Z meters
Measuring range:
INPUTS:
Measuring range of voltage Un:
1...100...120 V a.c.
2.5...250...300 V
a.c. input resistance > 2 M
4...400...600 V a.c.
Measuring range of current In:
0.01...1...1,2 A a.c.
input resistance 10 m 10%
0.05...5...6 A a.c.
input resistance 2 m 10%
Measurement of frequency 20...500 Hz
(in voltage range 24...480 V) input resistance > 2 M
Basic error
(at manufacturer’s settings)
:
- voltage and current:
(0.5% of the range + 1 digit)
in frequency interval 20...500 Hz
- frequency:
(0.02% of the range + 1 digit)
Sustained overload
150% Un (only for 400 V input),
120% Un (for other Un),
120% In
Short duration overload (1 s)
voltage input 2 Un (< 1000 V),
current input 10 In
7.4. Technical Data of
N24H and
N25H
Meters
Measuring range:
INPUTS:
Measuring range of unipolar voltage Un:
0...100...110 V d.c.
0...250...275 V
d.c.
input resistance > 2 M
