Technical Specification for 11 kV Packaged Substation

SP-PSSC-38-R7 Technical Specification For 11 kV Packaged Substation Page 1 of 77 Technical Specification for 11 kV Packaged Substation (W ith 250 / 400 / 630/ 1000 kVA Distribution Transformer - Hermetically Sealed Oil Type / Dry Type Transformer) Specification no SP-PSSC-38-R7 Prepared by R e v i e w e d b y Approved by Rev Date Name Sign Name Sign Name Sign Rohit Patil Amit T o m a r K Sheshadri R7 23/04/2020 SP-PSSC-38-R7 Technical Specification For 11 kV Packaged Substation Page 2 of 77 Index Scope .. 7 Codes & standards .. 7 Electrical Distribution System Data .. 8 PSS Configuration .. 9 11 kV Ring Main Unit .. 11 11KV XLPE Cable & termination kit .. 21 Oil Type Sealed Distribution Transformer .. 22 Dry Type Transformer (1000 KVA/ 630 KVA/ 400 KVA/250 KVA) .. 31 Low Voltage bus bar system .. 39 Low voltage switchgear, ACB, MCCB & Fuses .. 39 Automatic Power Factor Correction system.

Bus bar short time withstand capacity changed to 20kA for 3 sec DS R3 5.2.18 Routing of control / auxiliary wiring is added DS R3 5.2.24.1 Added – Avoid any type of Gaps or holes on the cable termination chambe r wall. DS R3 5.2.24.2,3 Added – internal arc rating DS R3 5.3.3 Separate ON/OFF switching for each motor is added DS

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