17
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Chapter 3 Specification
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Model
9277
9278
Rated current
(AC/DC)
20 A f.s.
200 A f.s.
Output voltage
(AC/DC)
2 V/20 A
2 V/200 A
The maximum
permissible input
range (DC to 3 kHz)
50 Arms
(75 Apeak)
350 Arms
(500 Apeak)
Input resistance (DC)
Max. 0.05 m
Ω
Max. 0.002 m
Ω
Output resistance
50
Ω
Basic accuracy
23 3
o
C
(73 5 )
Period of guaranteed
accuracy
DC and 45 Hz to 66 Hz, 30 min or
more warming-up after degaussing
Amplitude:
0.5% rdg.
0.05% f.s.
Phase: within
0.2
(DC has no provision)
1 year
Amplitude-frequency
characteristic
(deviation from
accuracy)
DC to 1 kHz within
1.0%
1 k to 50 kHz within
2.5%
50 k to 100 kHz within
5.0%
Phase-frequency
characteristic
DC to 1 kHz within
0.5
1 k to 50 kHz within
2.5
50 k to 100 kHz within
5.0
Temperature
coefficient
Sensitivity: within
0.05% rdg. /
o
C
Offset: within
0.005% f.s. /
o
C
Operating temperature
and humidity range
0 to 40
o
C (32 to 104 ),
Max. 80%RH (no condensation)
Storage temperature
and humidity range
-10 to 50
o
C (14 to 122 ),
Max. 80%RH (no condensation)
Effect of conductor
position
Within
0.5%
(DC, 55 Hz)
Within
1.5%
(DC, 55 Hz)
Chapter 3
Specification