索引
4
3
2
1
7
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5
10
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Insulation Resistance Measurement
Rated
output
voltage (DC)
50 V 125 V 250 V 500 V 1000 V
Possible
number of
measure-
ments
1000 times or more
Overload
protection
600 VAC (10 s)
660 VAC
(10 s)
Display
update
interval
IR4057: Within 0.6 s (no update during response)
IR4056: Within 1.0 s (no update during response)
Measurement terminal voltage characteristic
Open-circuit
voltage
1 to 1.2 times of nominal output voltage
Lower limit
resistance
value to be
maintained
nominal
output
voltage
0.05 M 0.125 M 0.25 M 0.5 M 1 M
Rated
current
1 to 1.2 mA
Short-circuit
current
1.2 mA or less
Response
time
IR4057: Within 0.6 s (with resistance load)
IR4056: Within 1.0 s (with resistance load)
Judgment
time
IR4057: Within 0.3 s, IR4056: Within 0.8 s
(When switching from an open state to 10 times the default
judgment reference value)
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