Sonel S-36 VLF, Руководство пользователя

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S-36 VLF
– USER MANUAL
22
4.3.3 Terminating the test
You can terminate testing at any time (by hand):

by operating the button [HV Off] . The
message: „End of Test“ appears,

in case of emergency by pressing the EMERGENCY STOP button.
The test ends automatically upon expiration of the test duration. Message: „Test Timeout“
Testing is also automatically terminated when a fault occurs. The following error messages may
occur:

NO EARTH!

Supply-Undervoltage!

OVERVOLTAGE!
In a VLF test:

Short circuit

Breakdown!

Test object defective
In a DC test:

Primary Overcurrent!

Overcurrent Trip!

Test object defective
Any time testing is terminated (manually or automatically), the high voltage will be automatically
switched off (red signal lamp [HV Off] extinguishes), and the discharge device is activated.
You can follow the discharge operation on the voltmeter. When the high-voltage reading has
dropped to 0 volt, the test object can be grounded.
If testing at a large load has been carried out for a long time, the unit should be left
switched on (only
[Mains On] !) for an adequate period of time (5-10 min). The cooling
system of the high-voltage unit will then remain active and provide for rapid cooling of
the transformer oil and enclosure.
After grounding and switching off the device, you can disconnect the connection to the test object.
WARNING
The high-voltage plug must not be plugged in or pulled in the live condition.
In case of an emergency, a second operator must switch off the high voltage by actuating the
EMERGENCY STOP button.