Hioki 3153 - Page 48

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3.4 Starting a Test
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NOTE
Until the output voltage reaches the set test voltage, the
TEST
lamp continues to
flash. When the output voltage reaches the set test voltage, the
TEST
lamp remains
lit. If the ramp-up time is set, the
TEST
lamp continues flashing until the output
voltage reaches the set test voltage. During the ramp-up time, the lower-limit
value cannot be set.
The
UP/DELAY
lamp lights during ramp-up.
The
DOWN
lamp lights during ramp-down. (However, it does not light during
time testing when insulation-resistance test termination mode is set to 0 [initial
setting].)
In addition to using the
STOP
key on the unit, a stop can be forced using the
STOP
key on the remote-control box or by using a STOP signal via external
input/output.
Conditions under which testing cannot start:
When using settings similar to the following, testing cannot start even when the
START
ke
y
is
p
ressed.
(
Flashin
g
items var
y
b
y
settin
g
.
)
Flashing Setting
Testing upper-
/lower-limit
values
Testing lower-limit value
≧
testing upper-limit value
Measured
voltage value
Output voltage restricting value (optional function) <
testing voltage value (See Section 7.9)
1. Press the
START
key when
READY
is lit.
The unit will change to the TEST status and a test will start.
TEST
and the
DANGER
lamp are lit in the TEST state.
2. In the following cases, tests are terminated, and
UPPER
,
LOWER
,and
FAIL
light up:
・
The output voltage fails to reach
±
5% of the set test voltage.
・
During the test, the output voltage deviates from the test voltage, and does
not return to
±
1 dgt of the set value within 5 seconds.
3. To terminate the test, press the
STOP
key. The unit will immediately stop
outputting a voltage and switch to the READY state. In such a case, no
screening is conducted.
Optional Functions
To ensure safety, an upper-limit for the test voltage can be set. (When the
default is set to 5.00 kV.) (See Section 7.9)
The FAIL Hold function can be used to hold the effective value at the time
of termination of the test using FAIL screening. (See Section 7.2)
The Hold function can be used to hold the value that was effective at the
time of forced termination of the test. (See Section 7.3)
For the DC withstand-voltage test, you can select whether you want to
perform screening during the ramp-up time. (See Section 7.12)