Single phase AC Switchboard with an automatic changeover from the LU supply to a DNO supply when the LU supply is lost. The switchboard feeds four tunnel lighting circuits which are automatically invoked when their associated traction supply is switched off. The switchboard can be divided into three sections to enable installation into limited access switch rooms.
Combined Assemblies & Frames (CA),
- 2mm Electro Zinc Plated Mild Steel
- Colour Light Admiralty Grey BS 381C 697 semi-gloss
- Floor standing installation in control rooms
- Cabling via undrilled zinc plated mild steel gland plates
|On / Off load||On Load|