Ac Current - Fluke 8845A User Manual

8845A/8846A
Users Manual
Accuracy (8846A)
Accuracy is given as
Range
100 A
1 mA
10 mA
100 mA
[3]
400 mA
[2]
1 A
[1][2]
3 A
[2]
10 A
[1] Part of 10 A range
[2] Available at front panel connectors only
[3] 400 mA available in software version 2.0 or greater only. 400 mA continuously; 550 mA for 2 minutes on, 1
minute off.
Accuracy (8845A)
Accuracy is given as
Range
100 A
1 mA
10 mA
100 mA
[3]
400 mA
[2]
1 A
[1][2]
3 A
[2]
10 A
[1] Part of 10 A range
[2] Available at front panel connectors only
[3] 400 mA available in software version 2.0 or greater only. 400 mA continuously; 550 mA for 2 minutes on, 1
minute off.
Additional Current Errors
Digits
6½
6½
5½
5½
4½

AC Current

The following ac current specifications are for sinusoidal signals with amplitudes greater than 5 % of range. For inputs
from 1 % to 5 % of range, add an additional error of 0.1 % of range.
Input Protection....................................................... Tool accessible 11 A/1000 V and 440 mA/1000 V fuses, limits of
Measurement Method ............................................. ac-coupled true-rms, dc-coupled to the fuse and shunt (no blocking
AC Filter Bandwidth
Slow .................................................................... 3 Hz to 10 kHz
Medium ............................................................... 20 Hz to 10 kHz
1-16
(% measurement + % of range)
24 Hour 90 Days
(23 1 C) (23 5 C)
0.01 + 0.02 0.04 + 0.025
0.007 + 0.005 0.030 + 0.005
0.007 + 0.02 0.03 + 0.02
0.01 + 0.004 0.03 + 0.005
0.03 + 0.004 0.04 + 0.005
0.03 + 0.02 0.04 + 0.02
0.05 + 0.02 0.08 + 0.02
0.1 + 0.008 0.12 + 0.008
(% measurement + % of range)
24 Hour 90 Days
(23 1 C) (23 5 C)
0.01 + 0.02 0.04 + 0.025
0.007 + 0.005 0.030 + 0.005
0.007 + 0.02 0.03 + 0.02
0.01 + 0.004 0.03 + 0.005
0.03 + 0.004 0.04 + 0.005
0.03 + 0.02 0.04 + 0.02
0.05 + 0.02 0.08 + 0.02
0.10 + 0.008 0.12 + 0.008
NPLC
100
10
1
0.2
0.02
1 Year
(23 5 C)
0.05 + 0.025
0.05 + 0.005
0.05 + 0.02
0.05 + 0.005
0.05 + 0.005
0.05 + 0.02
0.1 + 0.02
0.15 + 0.008
1 Year
(23 5 C)
0.05 + 0.025
0.05 + 0.005
0.05 + 0.02
0.05 + 0.005
0.05 + 0.005
0.05 + 0.02
0.10 + 0.02
0.15 + 0.008
Additional NPLC Noise Error for
1 mA, 100 mA, 400 mA, 3 A and
10 A
0 % of range
0 % of range
0.001 % of range
0.011 % of range 4 A
0.04 % of range 4 A
400 mA continuous 550 mA for 2 minutes on, 1 minute off.
capacitor)
Temperature
Coefficient/ C
Outside 18 to 28 C
0.002 + 0.003
0.002 + 0.0005
0.002 + 0.002
0.002 + 0.0005
0.005 + 0.0005
0.005 + 0.001
0.005 + 0.002
0.005 + 0.0008
Temperature
Coefficient/ C
Outside 18 to 28 C
0.002 + 0.003
0.002 + 0.0005
0.002 + 0.002
0.002 + 0.0005
0.005 + 0.0005
0.005 + 0.001
0.005 + 0.002
0.005 + 0.0008
Additional NPLC Noise Error
for 100 A, 10 mA, 1 A
0 % of range
0 % of range
0.01 % of range
0.11 % of range 4 A
0.28 % of range 4 A