—
6
—
<Operating uncertainty>
Operating uncertainty (B) is an error obtained under the nominal
operating conditions, and calculated with the intrinsic error (A),
which is an error of the instrument used, and the error (En) due to
variations. According to IEC61557, the maximum operating error
should be /-30%.
Ｂ
＝︱Ａ︱＋
1.15
×
√
（
Ｅ
1
2
＋
Ｅ
2
2
＋
Ｅ
3
2
）
Ａ
：
Intrinsic error
（％）
Ｂ
：
Operating uncertainty
（％）
Ｅ
1
：
Variation due to changing the position
（％）
Ｅ
2
：
Variation due to changing the Supply voltage
（％）
Ｅ
3
：
Variation due to changing the temperature
（％）
Nominal operating conditions
Ambient temperature
: 0
〜
40
℃
Relative humidity
: 90% or less
Position
: Horizontal
〜±
90
゜
Battery voltage
: within the battery effective range
KEW3023A
Nominal voltage
1000V
500V
250V
100V
Auto Range
0
〜
4/40/400/2000M
Ω
0
〜
4/40/200M
Ω
Open circuit
voltage
Nominal test voltage 100%~120%
Short circuit
current
Within 1.5mA
Nominal test
current
1M
Ω
0.5M
Ω
0.25M
Ω
0.1M
Ω
1mA 0%
〜＋
20%
1
st
effective
measurement
range
0.200
〜
1000M
Ω
0.200
〜
200.0M
Ω
0.200
〜
40.00M
Ω
0.200
〜
20.00M
Ω
Center scale
range
50M
Ω
50M
Ω
5M
Ω
5M
Ω
Accuracy
±
(2%rdg
＋
6dgt)
2
nd
effective
measurement
range
0.110
〜
0.199M
Ω
1001
〜
2000M
Ω
200.1
〜
2000M
Ω
40.01
〜
2000M
Ω
20.01
〜
200.0M
Ω
Accuracy
±
(5%rdg
＋
6dgt)
Accuracy at 0
Within 6dgt
www.
GlobalTestSupply
.com
Find Quality Products Online at:
