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Examoogle • User • info@examoogle.com • EE-2024-8821
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which the tool are necessary for installation of transformer?
Tri square
Nose player
Screw driver
Hammer
Tri square
Quick Summary: A Tri-square is a precision tool used during the installation and commissioning of transformers to ensure that the transformer tank and core assembly are perfectly perpendicular to the base foundation. Accurate alignment is essential to prevent mechanical stress on the bushings, cable terminations, and internal insulation structures.
A Tri-square is a precision tool used during the installation and commissioning of transformers to ensure that the transformer tank and core assembly are perfectly perpendicular to the base foundation. Accurate alignment is essential to prevent mechanical stress on the bushings, cable terminations, and internal insulation structures.
θ=90° — The required perpendicularity angle verified by the tri-square.
The Tri-square acts as a 90-degree reference gauge. By placing the stock against a flat reference surface (like a leveled base plate) and checking the blade against the vertical sides of the transformer tank or support frame, installers can identify and correct any deviations from the vertical axis (plumb). This ensures uniform load distribution across the foundation channels.
Tri-square ensures vertical alignment of the transformer tank.
Correct leveling prevents uneven pressure on the transformer core and windings.
Other tools like spirit levels are also used in conjunction for horizontal leveling.
Poor alignment leads to oil leaks and mechanical fatigue in bushings.
Ensures high precision in physical installation.
Simple to operate without requiring external power sources.
Cannot detect internal electrical faults.
Only useful for external mechanical alignment.
Transformer base foundation leveling.
Checking perpendicularity of radiator banks.
General workshop fabrication for electrical structures.
Standard: The transformer must be leveled within specified tolerances, typically not exceeding 1.5mm to 3mm per meter depending on the MVA rating.
Wrong options: Nose pliers (B), screw drivers (C), and hammers (D) are maintenance or assembly tools but are not dedicated precision instruments for verifying vertical alignment during structural installation.
A is correct — A Tri-square is essential for verifying the precise 90-degree vertical alignment of the transformer tank relative to its foundation.
During commissioning, always verify the level of the transformer using both a spirit level for horizontal balance and a tri-square for vertical plumb to guarantee structural integrity.