Kerala State Electricity Board Engineers' Association
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300kV GAS INSULATED SWITCHGEAR
300kV Gas Insulated Switchgear is shown in the figure. Hydraulic system is used for the operation of the Circuit Breaker (CB). Double bus bar arrangements with Isolators, CB etc. are included in the construction. It is a Transformer bay and hence the Gas Insulated Busbar (GIB) is shown. It is rated for 63kA for 3sec….
CONSTRUCTION OF PENSTOCK
Installation of Penstock is shown in the figure. Wall thickness of the penstock increases at the bottom level, as the pressure is high. Concrete Anchor blocks and Rocker supports are shown in the photograph. Water from the dam will flow through the tunnel (wherever required) first, and then reaches Valve House. From Valve House, penstock…
300kV CABLE LAYING WORKS
300kV Oil filled Power Cable laying works from Substation to Gantry yard are shown in the figure. Trench is excavated and sand bed is provided for the laying of cables. Cable termination facility has been provided in the Gantry yard. Oil pressure in the cable will be maintained from Oil pressure tank. Single core cables…