Heat shrinkable film packaging of mechanical and electronic voltage transformer is good or bad, in this play a decisive role in the operation of the
packing machine.
KanRe together under the shrinkable film packaging mechanical and electronic voltage transformer.
a, heat shrinkable film packaging purpose and classification of the mechanical and electronic voltage transformer
1.
Heat shrinkable film packaging of mechanical and electronic voltage transformer USES the
heat shrinkable film packaging of mechanical and electronic voltage transformer is a high voltage to low voltage, and keep the original set on phase relation of the instrument.
It is to reduce, the proportion of high pressure in a certain make low voltage coils can accurately reflect the change of pressure value, in order to solve high pressure measurement difficulties.
Reliably isolate high voltage again at the same time, to ensure the measurement and instrumentation and protection.
2.
Heat shrinkable film packaging of mechanical and electronic voltage transformer circuit disconnection
voltage transformer circuit break line, will be issued a warning sound and light plate, low voltage relay action, frequency monitoring lights, instrument is not normal.
(1) in the low voltage side of high voltage transformer, fuse fusing, circuit connection will loose or break.
If high voltage fuse fusing should open entrance isolating switch voltage transformer, replace the high voltage fuse, at the same time check in front of the high voltage fuse fusing there is normal phenomenon, and measure the voltage transformer insulation, good confirmed rear can either.
If low voltage fuse fusing should be replaced immediately, such as fuse again, should find out the reason, after the replacement.
If processes is not good, should consider to adjust the operation of the equipment.
2.
(2) voltage auxiliary contacts of switch circuit and voltage switch contact is not good, causing voltage transformer circuit disconnection.
Voltage transformers shall be of the protection and automatic device to stop using, in order to prevent the protection misoperation, the auxiliary contact voltage switch and circuit maintenance
3. Due to the low voltage circuit voltage transformer circuit break line, make the indicated value of the indicating meter produces errors, should as far as possible according to the instruction from the instrument, for monitoring equipment.
2。
Heat shrinkable film packaging mechanical and electronic voltage transformer high voltage or low voltage fuse fusing
(1) due to the low voltage circuit short circuit voltage transformer, high voltage circuit and short circuit, and fuse, long wear, ferroresonance is likely to cause high pressure or low voltage side fuse fuse
2. When the low voltage side fuse fusing, should be replaced immediately.
If the fuse again, should be replaced after find out the reason.
When high side fuse fusing, should pull open isolating switch of voltage transformer, and remove the fuse on the low voltage side, check the presence of fuse.
The exclusion of voltage transformer secondary circuit itself fault or failure, replace the appropriate melt, the voltage transformer in operation.
3。
Heat shrinkable film packaging mechanical and electrical insulator flashover voltage transformer discharge
(1) the surface of the insulator and insulator dirt, be affected with damp be affected with damp after crushing strength is reduced, insulator surface discharge circuit, make the leakage current increase, reach a certain degree, caused by surface discharge breakdown, should replace the insulator, insulator of not discharge cleaning
(2) the surface of the insulator dirt, some kind of overvoltage occurs when the power system, the surface flashover discharging, cause the insulation performance is greatly reduced, should be replaced immediately insulator.
4.
Heat shrinkable film
packaging machinery pressure transformer insulator and the junction box permeability oil
(1) a manufacturing fault.
(2) mechanical damage.
(3) internal fault
5.
Heat shrinkable film packaging of mechanical and electronic voltage transformer fault phase voltage meter instructions down
high side or low voltage side after melt fuse, a phase of the ammeter indicates the load and the secondary circuit connection.
Due to the secondary voltage can connect the voltmeter or watt-hour meter and relay coil voltage circuit, fault phase voltage meter instructions have different degree of reduced.
Should disconnect voltage transformer isolation switch, remove the secondary side melt, examined for fusing, exclusion of voltage transformer secondary circuit itself fault or failure, replace the melt.
6.
Heat shrinkable film packaging of mechanical and electronic voltage transformer to abnormal operation and management of
in the operation of the voltage transformer in if found to have abnormal phenomenon, of the following should be recorded in the report to the relevant leaders and
1) joints and skin.
(2) the internal anomalies and discharge.
3. Coil or spark discharge between lead and shell.
(4) high oil level, oil from the oil hole overflow, or oil level is too low, can't see in the oil level gauge.
that is heat shrinkable film packaging mechanical and electronic voltage transformer is the purpose, classification, failure diagnosis and elimination, hope for your understanding of heat shrinkable film
packaging machine on the relevant information of help.
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