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What is the maximum voltage of pin type insulator?

What is the maximum voltage of pin type insulator?

33 kV
Pin insulators used in electric distribution systems up to 33 kV voltage level. Beyond operating voltage of 33kV, pin insulators become too bulky and uneconomical. Suspension insulators are used for higher than 33 kV voltage levels.

Why pin insulators are not used above 33kV?

Pin type insulators are not economical at operating voltages greater than 33 kV. It is placed on the cross arm of the supporting tower. The pin insulator has grooves on the upper end for keeping the conductor.

What insulators are used in High Voltage?

Insulators used for high-voltage power transmission are made from glass, porcelain or composite polymer materials. Porcelain insulators are made from clay, quartz or alumina and feldspar, and are covered with a smooth glaze to shed water.

What are the disadvantages of pin type insulator?

Disadvantages of Pin Type Insulator It must be used by the spindle. The voltage rating is up to 36kV. The insulator pin can damage the thread of an insulator. For above 50KV, these insulators will become uneconomical and bulky.

What is the maximum voltage level up to?

1,200 KV is the highest voltage proposed in power transmission. Presently, the highest voltage used is 800 KV by China, which is also developing a 1,100 KV system.

Which type of insulator is used at voltages less than 11kv?

Strain and shackle insulators are used at dead ends in low voltage distribution lines (less than 11 kV).

What are post insulators?

POST INSULATORS. Post insulators are used as supports for bus-bars in transformer sub-station yards, in switchgear as support for breakers, and for capacitor banks. These insulators are generally subjected to bending, torsion and compression forces in service.

What type of insulator is used for 11kV line?

#5 Suspension Insulators

The Advantages of Suspension Insulator Disadvantages of Suspension Insulator
Each unit can operate on a voltage of around 11kV. Insulator string is expensive as compared to pin-type and post-type insulators.

What is main advantage of pin insulator?

Advantages of Pin Insulator It has high mechanical strength. The pin type insulator has good creepage distance. It is used on the high voltage distribution line. The construction of the pin type insulator is simple and requires less maintenance.

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