Hioki IR3455 - Step Voltage Test

4.4 Step Voltage Test
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付録
索引
97
• The instrument increases the test voltage
gradually and monitors the resultant insu-
lation resistance and leakage current.
• If the insulation resistance decreases as
the test voltage increases, the object
under test is damp or unclean and
requires attention.
(Reference standard

IEEE43-2000 Recommended Practice for
Testing Insulation Resistance of Rotating
Machinery)
• The test voltage is increased in 5 steps at
regular intervals during insulation resis-
tance measurement. The resistance mea-
surement and the current measurement
are acquired once at the end of every
step.
• The test voltage is applied in one of the
two orders below.
STEP2.50 kV: 500 V  1 kV  1.5 kV 
2 kV  2.5 kV
STEP5.00 kV: 1 kV
 2 kV  3 kV 
4 kV  5 kV
4.4 Step Voltage Test
What is it used for?
Used to determine the effect of the
test voltage level on insulation resis-
tance of an object.
What is a step voltage test?
Overview of test