1.1 Product Overview
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付録
索引
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The 3455 is an insulation resistance tester
with a wide measurement range, for use in
such environments involving low to high
voltage.
The tester has the functions and purposes
given below.
Overview
1
1.1 Product Overview
Function
Purpose
Reference
page
(Basic)
Insulation
resistance
measurement
To test the insulation resistance of
an electrical facility.
❖
3.2 (P.56)
Voltage
measurement
To measure the voltage of an exter-
nal circuit, e.g., commercial power
supply.
❖
3.3 (P.73)
Temperature
measurement
To measure a temperature
❖
3.4 (P.76)
(Applied)
Timer
To automatically end measurement
after a predetermined time.
❖
4.1 (P.79)
Display
PI and DAR
values
To check whether the insulation re-
sistance increases with time after a
voltage is applied.
[When the PI (polarization index)
value or the DAR (dielectric absorp-
tion ratio) value is close to 1, the
tester determines that the insula-
tion of the object to be measured
has deteriorated.]
❖
4.2 (P.83)
Temperature
correction
(TC)
To obtain the insulation resistance
at various temperatures varied from
the actual environmental tempera-
ture at which measurement is per-
formed.
❖
4.3 (P.87)
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