Page 247 - Electrician - TT (Volume 1)

ELECTRICIAN - CITS

• The dust particles in the air get trapped by the oil in the oil seal cup.
• The color of silica gel crystal is dark blue when it absorbs moisture; it becomes pink.
• Transformer breathes out when heat increases.

Explosion Vent
• prevent damage of the transformer tank be releasing any excessive pressure generated inside the transformer.
• bent pipe with thin aluminum diaphragms at both ends.
• A wire mesh is provided at lower end of the explosion vent to prevent the pieces of diaphragm from entering
the tank.
• A wire mesh is also provided at upper end of vent pipe to protect mechanical damages of upper diaphragm.

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CITS : Power - Electrician & Wireman - Lesson 41-49