Design and Constructional Features:
All 415V switchgear panels shall have following features:
Metal enclosed, indoor, floor mounted and free standing type.
All frames and load bearing members will be fabricated with cold rolled sheet steel of
thickness not less than 2mm and others will be of 1.6mm. Removable gland plates of thickness 2.5mm shall be provided for all panels.
Page 8 of 10
Project : Bang Kieng HPP (3x5.5 MW) Rev
Section : 2.6, Description of Indoor Electrical Equipments 0
All switchboards/panels will be of dust and vermin proof. All cutouts shall have synthetic rubber gaskets.
Bus bars will be of high conductivity Aluminium alloy.
All types of relays and timer shall be flush mounted with connections from inside, and shall
have transparent & dust tight cover, removable from front, draw out construction for easy
replacement and testing facility. The auxiliary relays and timer may be provided in fixed cases
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