Hioki ST5540, Instruction Manual, Page: 264 / 326

10.4 Accuracy
258
Operating temperature and humidity for guaranteed accuracy : 23

5°C (73

41°F), 80% RH or
lower (no dew condensation allowed)
Temperature coefficient: 0.1 x basic accuracy x (T-23) weighted --- operating temperature T [°C]
Warm-up time : 20 min.
• Input crest value is allowed up to 1.5 times the range
• When networks D and F are used, the guaranteed accuracy ranges (full-scale value of each range) are
0.67 and 0.5 times, respectively
• Value calculated based on voltage detected at terminals of a network having a non-inductive resistance
of 1 k

.
• Measurements in voltage measurement mode conform to the accuracy listed below. (1 mA=1 V)
Measurement of DC
Measurement of AC/AC + DC
(During AC measurements, the frequency characteristics of the high-pass filter (fc=4 Hz) is added)
Measurement of ACPeak
(Disabled in network A and B and when the filter is set to Off in network C)
Voltage monitor accuracy(Less than 80 V is indicated as "Less than 80 V")
Current monitor accuracy(Less than 0.5 A is indicated as "Less than 0.5 A")
Measurement method: average value response, effective value conversion
10.4 Accuracy
Current Measurement Section
Range Guaranteed accuracy range Measurement resolution Accuracy
50.00 mA 4.000 mA to 50.00 mA 10

A ± 2.0%rdg.±6dgt.
5.000 mA 0.400 mA to 5.000 mA 1

A ± 2.0%rdg.±6dgt.
500.0

A 40.0

A to 500.0

A 0.1

A ± 2.0%rdg.±6dgt.
50.00

A 4.00

A to 50.00

A 0.01

A ± 2.0%f.s.
Range Guaranteed
accuracy range Measurement
resolution Accuracy
0.1 Hz

f < 15 Hz 15 Hz

f

100 kHz 100 kHz < f

1 MHz
50.00 mA 4.000 mA to
50.00 mA 10

A ± 4.0%rdg.±10dgt. ± 2.0%rdg.±6dgt. ± 2.0%rdg.±10dgt.
5.000 mA 0.400 mA to
5.000 mA 1

A ± 4.0%rdg.±10dgt. ± 2.0%rdg.±6dgt. ± 2.0%rdg.±10dgt.
500.0

A 40.0

A to
500.0

A
0.1

A ± 4.0%rdg.±10dgt. ± 2.0%rdg.±6dgt. ± 2.0%rdg.±10dgt.
50.00

A 4.00

A to
50.00

A
0.01

A ± 4.0%f.s. ± 2.0%f.s. ± 2.0%f.s.
Range Guaranteed
accuracy range Measurement resolution Accuracy
15Hz

f 10 kHz 10 kHz <

f

100 kHz 100 kHz < f

1MHz
75.0 mA 8.0 mA to 75.0 mA 100

A ± (2%rdg.±6dgt.) ± 5.0%f.s. ± 15.0%f.s.
10.00 mA 0.80 mA to
10.00 mA 10

A ± (2%rdg.±6dgt.) ± 5.0%f.s. ± 15.0%f.s.
1.000 mA 0.100 mA to
1.000 mA 1

A ± 2.5%f.s. ± 5.0%f.s. ± 15.0%f.s.
500.0

A 40.0

A to
500.0

A
0.1

A ± 4.0%f.s. ± 5.0%f.s. ± 20.0%f.s.
Range Guaranteed accuracy range Measurement resolution Accuracy
300 V 85 V to 275 V 0.1 V ± 5%rdg.±10dgt.
Range Guaranteed accuracy range Measurement resolution Accuracy
20 A 0.5 A to 20 A 0.1 A ± 2%rdg.±5dgt.