MAINTENNANCE
Maintenance of a transformer is very important. There are many parts of maintenance those are routine maintenance, Cooling strategies for transformer, Cooling strategies for transformer, Cleaning transformer, If Transformer is new, Painting section of transformer, current transformer oil leakage, how to repair oil emerge current transformer, how to tell if a transformer will serve the load, mechanical strength test of transformer tank, testing water-cooled dry type transformer, factory test of transformer tank, transformer tank, transformer repairing process, transformer tank tests.
What best defines maintenance?
English Language Learners
Definition of maintenance.
The act of keeping
property or instrumentation in good shape by creating repairs, correcting
issues, etc.: the act of inflicting one thing to exist or continue while not
dynamical.: the act of providing support for somebody or one thing.
Routine Maintenance Cleaning
If Transformer is new Maintenance of Transformer – Power Transformers Maintenance, Diagnostic & MonitoringThe art of transformer maintenance, inspection and repair (recommended practices)
Maintenance of Transformer – Power Transformers Maintenance, overall checklist.
The following chapters address routine maintenance, similarly
as specific testing and diagnostic techniques and tools accustomed assess the
condition of transformers. Some processes are typically higher than and on the
far side routine maintenance work to stay the electrical device operational.
electrical device medicine needs specialized instrumentation and coaching.
Standards organizations like yanked National Standards Institute/Institute of
Electrical and Electronic Engineers (ANSI/IEEE) contemplate average electrical
device life to be twenty to twenty-five years. High-quality maintenance and
correct medicine are vital for all transformers, however it's fully essential
for older ones particularly for important transformers that may cause loss of
generation.
Cooling strategies for electrical device
Heat is one in all the foremost common destroyers of transformers. Operation at solely 8º C higher than the electrical device rating can cut electrical device life by fifty nada. Heat is caused by internal losses. In some transformers, over one category of cooling and cargo rating is indicated. At every step of extra cooling, the rating will increase to correspond with augmented cooling. Note that the letter “A” indicates air, “FA” indicates forced air (fans), “O” indicates oil, “FO” indicates forced oil (pumps), “G” indicates some variety of gas, and “W” indicates there's a water/oil device.
It is vital to stay electrical device enclosures fairly clean.
it's additionally vital to stay the realm around them clear. Any things close
to or against the electrical device impede heat transfer to cooling air round
the enclosure. If dirt on cooling surfaces be not clean, it becomes additional
and tougher for air round the electrical device to get rid of heat. As a
result, over time, the electrical device temperature slowly rises unperceived,
reducing service life.
The fans and every one controls for want correct
operation. when it's been energized and therefore the loading and temperature
area unit stable, check the temperature with AN infrared camera and compare
loading with the plate. Repeat the temperature checks when one week of
operation.
One-year recent electrical device
Check the temperature alarm for correct operation. Check
enclosures and vaults/rooms for dirt accumulation on electrical device
surfaces. take away all things close to enough to have an effect on air
circulation. To avoid dirt clouds, a vacuum ought to 1st be accustomed take
away excess dirt. when cleansing, hunt for stained copper and insulation, that
indicates warming. If discoloration is found, check for loose connections. If
there are not any loose connections, check the cooling ways terribly fastidiously
and check for overloading when the electrical device has been re-energized.
hunt for carbon chase and cracked, chipped, or loose insulators.
Service and Yearly review
There is no “perfect insulator”; a tiny low quantity of
run current continuously exists. Look fastidiously for oil leaks. Check the
bushing oil level by viewing the oil sight glass or the oil level gauge. once
the bushing contains a gauge with a pointer, look fastidiously, as a result of
the oil level ought to vary slightly with temperature changes. If the oil level
is low and there's no visible external leak, there could also be an interior
leak round the lower seal into the electrical device tank. If doable, re fill
the bushing with constant oil and thoroughly monitor the extent and therefore
the volume it takes to fill the bushing to the right level the connexon of the
electrical device they use penstock. Penstock could be a reasonably grease.
when be part offs that purpose won't apart once more and additionally wherever
is clamp join, we have a tendency to use penstock as a result of it prevents
the carbon result on it purpose and additionally for keep it clean.
Painting
section
After testing electrical device area unit sent to color
the section. Before paint any reasonably dirt and rust area unit removed. when
cleansing surface of transformers, it's time for final paint. All the
transformers area unit painted in silver color. it's terribly sensible to use
lightweight color as a result of it reflects sun lightweight and warmth. Then
it's time for final finishing.
Figure Paint Section
Explain Transformer Action
current transformer oil
leakage, how to repair oil emerge current transformer, how to tell if a transformer
will serve the load, mechanical strength test of transformer tank, testing
water-cooled dry type transformer, factory test of transformer tank, transformer
tank, transformer repairing process, transformer tank tests,
prevention of transformer
explosion part, when should the transformer be repaired, how to fix
transformers joints, how to repair oil emerge current transformer, cleaning dry
type transformer
Maintenance of Transformers (A Detailed Checklist)
0 Comments