Study Report 1 : Upgrading of Electrical Supply

1. Introduction:

To check the effect of load increase due to the new equipment to be installed in the factory

2. Reference Document:

a. as built drawings

b. latest electrical bill

c. on-hands information by the client's representative

3. Current installation:

a. Single chamber sub-station with 1000KVA Transformer

b. Current size of ACB is 1000A TPN with 1600A Busbar

c. Current MD is 600A

4. New Installation:

a. New equipment (MD = 720A)

b. New a/c load (MD = 86A)

5. Maximum Demand Load Analysis:

a. Future MD (A) = Current MD + New MD

= 600A + 720A + 86A

= 1406A

b. Future MD (KW) = 860KW

c. Future MD (KVA) = 1012KVA

6. Conclusion:

a. New load cannot be catered by existing TNB sub-station

b. Application on new load / increasing of the current load need to be submitted to TNB

c. New MSB need to be installed to cater for future load / to upgrade the existing MSB (1000A TPN ACB to 1600A TPN ACB)