PVΩ measurement (IR4053 only)
For PVΩ range configuration, see insulation resistance measurements for 500 V and
1000 V.
PVΩ measurement
Measurement voltage (DC) PVΩ 500 V PVΩ 1000 V
Maximum display value 2000 MΩ 4000 MΩ
1st effective measuring range
[MΩ]
0.200 to 500 0.200 to 1000
Accuracy
(Limit deviation tolerance)
±4%rdg.
2nd effective
measuring range [MΩ]
501 to 2000 1010 to 4000
A
ccuracy
(Limit deviation tolerance)
±8%rdg.
Other measuring range [MΩ] 0 to 0.199
Accuracy
(Limit deviation tolerance)
±2%rdg. ±6dgt.
Effect of temperature
(E
3
)
Accuracy × 1.0
(Applicable for operational temperature
range excluding 18°C to 28°C)
Effect of humidity Accuracy × 1.0 and within allowance
Effect of external magnetic field
Accuracy × 0.5
Effect of position
(E
1
)
N/A
Effect of power supply
(E
2
)
Accuracy × 1.0 and within allowance
Effect of superimposing DC
voltage
Within ±10%
Possible number of
measurements
1000 times or more
Overload protection
10 seconds at 660 V AC/
10 seconds at 1200 V DC
Display update interval (no
update during in response)
Within 1.0 seconds
Open-circuit voltage* 1 to 1.2 times of measurement voltage
Lower limit resistance value to
be maintained rated
measurement voltage
20 MΩ ±5% 20 MΩ ±5%
Rated current 0.025 mA ±20% 0.05 mA ±20%
Short-circuit current 1.2 mA or less
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