Tenaga Nasional Berhad

(ii)
TNB upon receiving the above study and other necessary data shall conduct an integrated study of the
interconnected systems. The scope of study will include load flow, short-circuit, stability and protection
coordination studies. The costs of this study will also be borne by the owner of generator seeking
interconnection with the distribution system.
1.2 OTHER INFORMATION REQUIREMENTS
Other sets of information as listed below are necessary for TNBD to plan for connection of supply to consumers.
1. Site plan or location plan (see Appendix ) indicating the geographical position of the premises/buildings
of consumers. This information is essential for TNB to locate TNB’s infrastructure nearest to the prospective
consumers.
2. Layout plan (see Appendix ) for developed/proposed development. This information is necessary for TNB to
locate sub-station locations, if not previously identified, and feeder routes for MV or LV networks. Sketched layout
plans are required for individual or group applications less than 100KVA. Additional information, which needs to
be specified in the supply application form, is the position of prospective consumer with respect to LV system or
sub-station in terms of distance and estimated number of spans of LV feeders.
3. Building layout plans are particularly useful for indicating services entrance location/positions, position of substations
and consumer switch rooms.
4. Sub-station layout plan for both sub-stations integrated into a building or in separate building.
5. Consumer switch room layout indicating location of main switchboard, service cable entry position and necessary
ducting or trenching.
6. Wiring diagrams of installation to be approved and endorsed by Electrical Consultant Engineer for demand greater
than 100kVA. The single line drawing of the installation must encompass the complete installations indicating
incoming switches, main and sub-switchboards, main protection for incoming TNB supply as well as sub-circuit
protection, metering schemes, conductor sizes, major equipment e.g motors etc., standby generators, capacitor
banks. Ratings of switchgears and components must also be indicated.
7. Appendix 14 is the form which registers the consent or acknowledgement of developer/owner for leasing/transfer
of sub-station lot to TNB. This form is to be submitted by Electrical Consulting Engineers, acting on behalf of
consumers, for projects requiring substations.
Appendix 6 is a checklist for reference to consumers, electrical contractors and consultant engineers on range data
or information required at the supply application processing stage.
28 TENAGA
NASIONAL B E R H A D