Hioki ST5540, Instruction Manual, Page: 265 / 326

10.4 Accuracy
259
8
9
Chap
ter 10
S
pe
c
ificat
ions
10
Protective conductor current accuracy
Measurement of DC
Measurement of AC/AC + DC
(During AC measurements, the frequency characteristics of the high-pass filter (fc=4 Hz) is added)
ACPeak
Network accuracy
Range Guaranteed accuracy range Measurement resolution Accuracy
50.00 mA 12.00 mA to 50.00 mA 10

A ± 2.0%rdg.±6dgt.
10.00 mA 1.30 mA to 13.00 mA 10

A ± 2.0%rdg.±6dgt.
Range Guaranteed
accuracy range Measurement
resolution Accuracy
15 Hz f 100 kHz 100 kHz < f 1 MHz
50.00 mA 12.00 mA to 50.00 mA 10

A ± 2.0%rdg.±6dgt. ± 5.0%rdg.±20dgt.
10.00 mA 1.30 mA to 13.00 mA 10

A ± 2.0%rdg.±6dgt. ± 5.0%rdg.±20dgt.
Range Guaranteed
accuracy range Measurement
resolution Accuracy
15Hz

f 10 kHz 10 kHz <

f

100 kHz 100 kHz < f

1 MHz
75.0 mA 12.0 mA to 75.0 mA 100

A ± 2%rdg.±6dgt. ± 5.0%f.s. ± 25.0%f.s.
10.00 mA 1.30 mA to 13.00 mA 10

A ± 2.5%f.s. ± 5.0%f.s. ± 25.0%f.s.
Network Section
Network name/filter status
Characteristic*1, *2
DC input resistance
Frequency range
with
±
1% deviation
Cut-off frequency
(-3 dB points*4)
A/Filter OFF
*3
1 k

±1%
100 kHz or lower –
A/Filter ON
1 k

±1%
– 1326 ±20 Hz
B1
*
, B2
*
/ Filter OFF
*3
1 k

±1%
100 kHz or lower –
B1
*
, B2
*
/ Filter ON
1 k

±1%
–
1047 ±16 Hz
C/Filter OFF
2 k

±1%
–
1811 ±27 Hz
C/Filter ON1
2 k

±1%
–
3470 ±104 Hz
*4
C/Filter ON2
2 k

±1%
–
9100 ±273 Hz
*4
D
1.5 k

±1%
–
705 ±15 Hz
E
*3
1 k

±1%
100 kHz or lower –
F
2 k

±1%
100 kHz or lower –
G
875

±1%
– 1997 Hz±27 Hz
*
only ST5540
Network
name/filter
status
Accuracy (Deviation from theoretical value. Includes accuracy of internal voltmeter)
Measured current AC, AC+DC ACpeak
range
50 mA, 5 mA,
500

A
50

A 75 mA, 10 mA 1 mA, 500

A
A/Filter
OFF
*3
0.1Hz <

f <

10 kHz
10 kHz f

< 100 kHz
100 kHz

f

1MHz
± 4%rdg.±10dgt. ± 4%f.s.
– –
A/Filter
ON
0.1Hz <

f <

10 kHz
10 kHz f

< 100 kHz
100 kHz

f

1MHz
± 4%rdg.±10dgt.
± 1.5dBrdg.±10dgt.
± 1.5dBrdg.±10dgt.
± 4%f.s.
± 1.5dBrdg.±2%f.s.
± 1.5dBrdg.±2%f.s. – –
B1
*
, B2
*
/
Filter
OFF
*3
0.1Hz <

f <

10 kHz
10 kHz f

< 100 kHz
100 kHz

f

1MHz
± 4%rdg.±10dgt. ± 4%f.s.
– –