Hioki IR3455, Instruction Manual, Page: 179 / 184

Appendix 4 Temperature Compensation Table
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付録
索引
173
Table No.9
Source

IEEE Std 43-2000 Recommended Practice for Testing Insu-
lation Resistance of Rotating Machinery (U.S.A.)
Object under test
Rotating machinery
Selectable reference
temperature range 20 to 60°C, (Default 40°C)
Convertible range of
actual temperature
used for measurement
20 to 60°C
Compensation
formula Converted to a resistance value at
the reference temperature using
the formula below and result dis-
played.
Rtref : Resistance after compen-
sation for reference tem-
perature of tref°C
Rt : Resistance measured at
the temperature of t°C
tref : Reference temperature [°C]
t : Actual temperature used
for measurement [°C]
R
tref
0.5
tref t –
 
10

Rt

=