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Archive: Category «Maintenance»

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220V DC system at thermal power station

The 220V DC system supplies direct current as source of operating power for control, signaling, relays, tripping and closing of switchgears, emergency motors of most important auxiliary systems. Under normal… Read more

Feb 15, 2012 | Bipul Raman

220V DC system at thermal power station

Purpose and maintenance of transformer bushings

The two most common types of bushings used on transformers as main lead entrances are solid porcelain bushings on smaller transformers and oil-filled condenser bushings on larger transformers. Solid porcelain… Read more

Feb 05, 2012 | Edvard

Transformer porcelain bushings spare parts

The Importance of the Correct PPE

Whilst awareness of the dangers of arc flash has continued to increase over the last few years, the number of incidents that are still occurring on a daily basis are… Read more

Oct 29, 2011 | cgoulds

Electrical safety

Testing of UPS devices

The purpose of electrical testing on systems and their components is two-fold. The first is to check the installation of the equipment and perform component and systems tests to ensure… Read more

May 15, 2011 | Edvard

Testing of UPS devices

Maintenance Of Meduim Voltage Circuit Breakers

Medium-voltage circuit breakers rated between 1 and 72 kV may be assembled into metal-enclosed switchgear line ups for indoor use, or may be individual components installed outdoors in a substation…. Read more

Apr 17, 2011 | Edvard

Maintenance Of Meduim Voltage Circuit Breakers

Maintenance Of SF6 Gas Circuit Breakers

Sulfur Hexafluoride (SF6) is an excellent gaseous dielectric for high voltage power applications. It has been used extensively in high voltage circuit breakers and other switchgears employed by the power… Read more

Jan 04, 2011 | Edvard

Maintenance Of SF6 Gas Circuit Breakers

Maintenance Of Molded Case Circuit Breakers (MCCB)

The maintenance of circuit breakers deserves special consideration because of their importance for routine switching and for protection of other equipment. Electric transmission system breakups and equip­ment destruction can occur… Read more

Jan 01, 2011 | Edvard

Molded Case Circuit Breakers (MCCB)

Maintenance Of Low Voltage Circuit Breakers

The deterioration of low voltage circuit breaker is normal and  this process begins as soon as the circuit breaker is installed. If  deterioration is not checked, it can cause failures… Read more

Dec 31, 2010 | Edvard

Maintenance Of Low Voltage Circuit Breakers
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