58
4.7 ENVIRONMENTAL VARIATIONS
Condition
of influence
Range of
influence
Measurement
influenced
Influence
Typical
MAX
Temperature
-4° to +131°F
(-20 to +55°C)
V AC
V DC
A*
Ω
W AC
W DC
-
0.1% R/10°C
1% R/10°C*
-
-
0.15% R/10°C
0.1% R/10°C
0.5% R/10°C + 2cts
1.5% R/10°C + 2cts*
0.1% R/10°C + 2 cts
0.2% R/10°C + 2 cts
0.3% R/10°C + 2 cts
Humidity
10% to 90%RH
V
A
Ω
W
≤
1 ct
-
0.2% R
0.25% R
0.1R + 1 ct
0.1% R + 2 cts
0.3% R + 2 cts
0.5% R + 2 cts
Frequency
10 Hz to 1 kHz
1 kHz to 3 kHz
10 Hz to 400 Hz
400 Hz to 1 kHz
V
A
1% R + 1 ct
8% R + 1 ct
1% R + 1 ct
4% R + 1 ct
1% R + 1 ct
9% R + 1 ct
1% R + 1 ct
5% R + 1 ct
Position of the
conductor in the
jaws
(f
≤
400 Hz)
Any position on
the internal
perimeter of the
jaws
A-W
(<2000A DC or
1400A AC)
(>2000A DC)
2% R
8% R
4% R + 1 ct
Full-scale
Adjacent
conductor
carrying a
current of 150 A
DC or RMS
Conductor
touching the
external
perimeter of the
jaws
A-W
40 dB
30 dB
Conductor
enclosed by the
clamp
0 to 500 A DC
or RMS
V
< 1 ct
1 ct
Application of a
voltage of the
clamp
0 to 1000 V DC
or RMS
A-W
< 1 ct
1 ct
Peak factor (1)
1.4 to 3.5
limited
to 3000 A peak
1400 V peak
A (AC-AC+DC)
V (AC-AC+DC)
1% R
1% R
3% R + 1 ct
3% R + 1 ct
PF (inductive
and capacitive)
0.7 and I
≥
5A
0.5 and I
≥
10A
0.2 and I
≥
20A
W
0.5%R
1% R + 1 ct
3% R + 1 ct
8% R + 1 ct
*Note in Temperature: Influence specified until 1000A
DC
Summary of Contents for AEMC 2139.61
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