Specifications; Electrical Specifications - Fluke 381 User Manual

Specifications

Electrical Specifications

Temperature Coefficients, add 0.1 x specified accuracy for each degree C >28 °C or <18 °C.
AC Current Via Jaw
Range.................................................................... 999.9 A
Resolution ........................................................... 0.1 A
Accuracy.............................................................. 2 % ±5 digits (10 Hz to 100 Hz)
Crest Factor (50/60 Hz)................................... 3 @ 500 A
AC Current via Flexible Current Probe
Range.................................................................... 999.9 A / 2500 A (45 Hz to 500 Hz)
Resolution ........................................................... 0.1 A / 1 A
Accuracy.............................................................. 3 % ±5 digits
Crest Factor (50/60Hz).................................... 3.0 @ 1100 A
Position Sensitivity
Distance from Optimum
A
B
C
Measurement uncertainty assumes centralized primary conductor at optimum position, no
external electrical or magnetic field, and within operating temperature range.
5 % ±5 digits (100 Hz to 500 Hz)
2.5 @ 600 A
1.42 @1000 A
Add 2 % for C.F. >2
2.5 @ 1400 A
1.42 @ 2500 A
Add 2 % for C.F. >2
Table 5. Position Sensitivity
i2500-10 Flex
0.5 in (12.7 mm)
0.8 in (20.3 mm)
1.4 in (35.6 mm)
Remote Display True-rms Clamp Meter
A
B
C
i2500-18 Flex
1.4 in (35.6 mm)
2.0 in (50.8 mm)
2.5 in (63.5 mm)
Specifications
Error
±0.5 %
±1.0 %
±2.0 %
15