Hioki IR3455 - Appendix 4 Temperature Compensation Table

Appendix 4 Temperature Compensation Table
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付録
索引
165
The temperature compensation function uses the tables
below.
• Tables No.0 to 8 are based on Chinese standards.
• Table No.9 is based on the US IEEE standards.
Table No.0
Source  GB50150-91 Standard for hand-over test of electric
equipment, electric equipment installation engineering
(Chinese)
Reference  DL/T596-1996 Power installation preventive mainte-
nance code (Chinese)
Appendix 4 Temperature Compen-
sation Table
Object under test
Oil-impregnated power transformer
Selectable reference
temperature range
-10 to 70°C (default 20°C)
Convertible range of
actual temperature
used for measurement
-10.0 to 70.0°C
Compensation
formula
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
1.5
t tref –10
Rt=