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4.4 Starting a Test
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4.4.1 Executing a Test
DANGER
To avoid electric shock, make sure that no high voltage is being applied
to the output, confirm the following items, and output voltage.
(1) The analog voltmeter reads 0 kV.
(2) The
DANGER
lamp is OFF.
(3) The
READY
lamp is lit (it is off in the Double Action mode).
NOTE
Priority for control of the
START
key is in the following order: the
START
key on
the REMOTE CONTROL BOX, the external I/O, and the front panel of the unit.
Connecting the switch signal line plug on the REMOTE CONTROL BOX disables
the
START
key on the front panel of the unit and the start signal for the external
I/O.
NOTE
During the delay, the
UP/DELAY
lamp lights. (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
key is pressed. (Flashing items vary by setting.)
Flashing Setting
Resistance value
and test time
Auto range is selected, Test time is set to On
(See Section 7.10)
Testing upper-
/lower-limit
values
Testing lower-limit value
≧
testing upper-limit value
Test time Delay time
≧
test time
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.
TESAT
and
the
DANGER
lamp are lit in the TEST state.
2. In either of the cases below, the test will be terminated and
UPPER
,
LOWER
,or
FAIL
will light.
About 1 second after the test has started, the output voltage is still lower
than 1/2 of the set test voltage.
The test time has elapsed without the output voltage reaching a level
between 5% lower and 50% higher than the set test voltage value.
Output voltage during testing differs from the test voltage value and does
not fall within the range 80% to 150% of the voltage setting.
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
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)
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