13-07-2012, 12:30 PM
GAS INSULATED TRANSFORMER
GAS INSULATED TRANSFORMER.pptx (Size: 1.31 MB / Downloads: 71)
WHAT IS INSULATION:
A TRUE INSULATOR IS A MATERIAL THAT DOES NOT RESPOND TO AN ELECTRIC FIELD AND COMPLETELY RESISTS THE FLOW OF ELECTRIC CHARGE.
IN INSULATING MATERIAL VALANCE ELECTRONS ARE TIGHTELY BOUNDED THEIR ATOMS.
THIS MATERIAL ARE USE IN ELECTRICAL EQUIPMENTS AS INSULATORS OR INSULATION.
GAS INSULATED TRANSFORMER(GIT)
FIRST UNIT OF GIT PRODUCED IN 1967 BY THE ORGANISATION MITSUBISHI ELECTRIC POWER PRODUCTS IN USA.
EMPLOYEES SF6 GAS INSTEAD OF THE CONVENTIONAL OIL BOTH HAS AN INSULATING AND COLLING AGENT.
THE RATING OF GAS INSULATED TRANSFORMER IS 22KV, 1500KVA
IMPORTANCE OF INSULATION
KEEP IN MIND THAT PROPERLY DESIGN AND MAINTAINED INSULATION NOT ONLY SAVES ENERGY BUT ALSO IMPROVES THE OPERATION OF PLANT.
IT IS NO NEWS TO MANY PLANT OPERATORS THAT DURING RAIN FALL,STEAM GENERATING
CAPACITY NEED TO BE INCREASED TO MEET THE HEATING DEMANDS FOR THE OPERATION OF PLANT.
THIS CAN EASILY GO UP TO 25%.
ADVANTAGES OF GIT:
HIGH FLAME RESISTANT AND NON-EXPLOSIVE.
HIGH RESISTANCE TO MOISTURE.
REDUCED INSTALLATION SPACE.
CAUSES NO POLLUTION.
EXPLOSION PROOF TANK.
EASY INSPECTION AND MAINTANANCE WORK.
DISADVANTAGES OF GIT:
GAS INSULATED TRANSFORMER INSTALLATION IS MORE EXPENSIVE IN COMPARISON TO AIR INSULATED INSTALLATION WITH SAME RATING.
SF6 GAS PRESSURE MUST BE MONITORED IN EACH COMPARTMENT,REDUCTION IN THE PRESSURE OF THE SF6 IS RESULTS AS FAULT OF TRANSFORMER.