AEMC 205 - Environmental Variations

48
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
0.1 R + 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 2 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
2% R
4% R + 1 ct
Adjacent
conductor
carrying a
current of 150 A
DC or RMS
Conductor
touching the
external
perimeter of the
jaws
A-W 42 dB 35 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 900 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