14
Equipment irrelevant to the tester cannot share power supply terminal with the tester.
Power supply of the system must be provided with reliable grounding to prevent the
risk of electric shock.
Operators cannot leave the test site in the process of equipment operation.
The transformer core must be reliably grounded with enclosure. Shell of tester and
shell of measuring impedance must be reliably grounded with transformer enclosure.
Please do not start test before “ground” of the tester is correctly connected.
Please fully discharge terminal of the transformer to be tested before test.
Before use, please check appearance of the tester and check whether its power
switch is at “closed” position and every wiring terminal is normal.
Winding deformation test must be carried out on the conditions that all leads of the
transformer (including overhead line, enclosed busbar and cable) are disconnected and
far from the transformer bushing to the extent possible (surrounding grounding body and
metal suspended solids must leave the transformer casing by more than 20cm),
especially for the transformer connected with enclosed busbar.
Correctly record positions of tap switches before test and put tap switches of the
tested transformer at the first tap as far as possible, especially for the on-load regulating
transformer, in order to achieve complete winding information. For no-load regulating
transformer, make sure every measurement is made at the same tap position for easy
comparison.
Make sure wiring clamp of the measuring impedance tightly contacts bushing clip. In
case of conductive paste or rust on the bushing clip, scrub it clean with abrasive cloth or
dry cotton cloth.
Do not start any software irrelevant to measurement while using the tester.
The tester with use of general operating system has the risk of system bug and
collapse.
Generally, system abnormalities may be eliminated by restart of system software.
Please do not use the system in rainy and foggy days as it is not water-proof.
Put the tester into its packing case when not used and keep the packing case level.
The scrapped equipment must be handled according to requirements of national laws
and regulations or handed to the Company for handling.
Please directly contact our after-sales service department if you have any doubt after
reading the instructions.
