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Compact Substation (CSS)
Compact Substations are ideal for locations where space and safety is a
concern and population density is high. CSS is an enclosed assembly consisting
of high/medium voltage switchgear compartment, distribution transformer
compartment, and low voltage switchboard compartment along with
interconnections to transform energy from medium to low voltage systems.
Technical Specifications
Medium Voltage Compartment
MV Switchgear | 3.3 to 33 kV |
Type of Switchgear | LBS / SFU / Circuit Breaker / RMU |
Insulation Medium | SF6 Gas or Vacuum |
Tripping | Fuse / Relay |
Short Circuit Rating | 21 kA or as per customer requirement |
Transformer Compartment
Type of cooling | Oil Immersed |
Rating | 100 to 2500 kVA |
Primary Voltage | 3.3 to 33 kV or as per customer requirement |
Secondary Voltage | 433/415/400 V or as per customer requirement |
Phase / Frequency | 3 Phase / 50 or 60 Hz. |
Vector Group | Dynll or as per customer requirement |
Low Voltage Compartment
LV Switchgear | ACB’s, MCCB’s |
Current Rating | Up to 4000 Amps |
Voltage | 440 Volts |
No. of Poles | 3/4 |
Short Circuit Rating | 36 kA or as per customer requirement |
Advantages of CSS
- HT switchgear, transformer and LT switchgear is installed in a common compact setup, thus cabling cost from HT switchgear to transformer and from transformer to LT switchgear is saved
- Extremely safe and less chances of electrical failure
- CSS is delivered as a single unit including HT, LT switchgear and transformer. Therefore, saves installation time and logistics cost
- Prefabricated CSS adopts advanced designing idea, so the size is optimized and has an aesthetic appeal
STANDARD FITTINGS
- M.S. / CRC Sheet fabricated Enclosure as per IS 14786
- Load Balancing Lifting Hooks
- Collapsible hinge mounted doors
- Perforated sheet & Air ventilation louvers in Transformer section
- Easy removable rain water protection canopy
- Inter connecting MV & LV cables & Bus bars
- Powder coated paint, Shade -RAL 7032 or as per customer request
- Illuminating lamps with MCB