Compact Substation essentially consists of an assembly of the following on common base.

• H.V compartment - M.V Switchgear (RMU / LBS / VCB) with metering & protection.
• Transformer compartment – Transformer (Oil type / Dry type Up to 2500KVA, 3.3kV/11kV/22kV/33kV, OCTC/OLTC).
• L.V compartment - L.V Switchgear – ACB / MCCB / SFU with metering & protections.

Benifits

Applications

• Design conforms to International Electro technical Commission (IEC)62271-202 standard.
  Compact substation construction saves floor space (Up to 70% in comparison with conventional systems).
  Designed to withstand electrical impulses, thermal & dynamic stresses.
  Equipments mounted on common ISMC channel base with fabricated CRCA sheet steel. Easy to lift both from top and bottom of CSS.
  Easy installation / Maintenance of Transformer – Transformer can be installed / accessed from roof top or hinged doors / side panels.
  Safety – Duct and Pressure relief flaps provided for operator and public safety from internal arc.
  Meets IP55/IP54& IP23 degree of protection.
  Designed to withstand electrical impulses, thermal & dynamic stresses.
  Cost Effective – Costly cabling eliminated. Reduced civil work. Factory assembled & Factory tested, thus reducing the work to be done at site.
  Enclosure is Aesthetically pleasing.
  Protection from Unauthorized access & Environmental Hazards.
  One point contact – Easy specification.
  Low power loss and Low noise transformer.
  Short delivery & ready for commissioning.
  Custom built – variety of choices for MV/LV switchgears, no. of feeders to suit user requirements.
  Modern manufacturing techniques ensure cost effectiveness, reliability & long trouble free performance, and better safety.
  
• Replacement for conventional pole mounted transformers
  Residential Complexes / Apartments
  Commercial Buildings
  Industries
  Power Distribution
  Hospitals
  Software Parks
  Development Projects
  Construction Sites
  Solar Power Generation
  

Standard Components

General Arrangements

Technical Specification

• HV COMPARTMENT	TRANSFORMER COMPARTMENT	LV COMPARTMENT
  LOAD BREAK SWITCH(LBS) OR RING MAIN UNIT (RMU) OR VACUUM CIRCUIT BREAKER (VCB)	OIL FILLED TRANSFORMER OR DRY TYPE (VPI/CAST RESIN) TRANSFORMER	ACB / MCCB WITH BUILT IN OVER CURRENT, SHORT CIRCUIT AND EARTH FAULT PROTECTION
  COMPARTMENT FITTED WITH LOCKABLE SWING HANDLE AND THREE POINT LATCH	COMPARTMENT FITTED WITH LOCKABLE SWING HANDLE AND THREE POINT LATCH	COMPARTMENT FITTED WITH LOCKABLE SWING HANDLE AND THREE POINT LATCH
  POWER FUSES AND / OR SHUNT TRIP COIL	INTERNAL LIGHTING	TVM,METERING(VOLTMETER AND AMMETER WITH SELECTOR SWITCHES)
  DOOR LIMIT SWITCH	CABLE / BUS BARS FOR HV AND LV CIRCUIT BREAKER CONNECTION	ELECTRICAL INDICATORS AND INTERNAL LIGHTING
  WTI (ANALOG / DIGITAL)& OTI	LOUVERED COVERS	SPACE HEATER WITH THERMOSTAT CONTROL
  		AUXILIARY SUPPLY PLUG AND SOCKET
  	OPTIONAL ACCESSORIES
  VARIOUS RELAY PROTECTIONS	OFF CIRCIUT TAP CHANGER (OCTC) / ON LOAD TAP CHANGER (OLTC	'N' NO. OF DISTRIBUTION BREAKERS (ACB/MCCB)
  HT METERING		APFC PANEL / CAPACITOR BANKS
  SURGE / LIGHTNING ARRESTORS		SYNCHRONISATION PANEL

  
  
• 
  

• RATED VOLTAGE (kV)	3.6	7.2	12	24	36
  RATED INSULATION LEVEL (kVrms/kVp)	10/40	20/60	28/75	50/125	70/170
  RATED FREQUENCY (Hz)			50
  OIL FILLED TRANSFORMER HV VOLTAGE LV VOLTAGE FREQUENCY			25/40/63/100/250/315/400/500/630/750 /1000/1250/1600/2000/2500kVA 3.3/6.6/11/22/33kV 433V,3PHASE Or custom built 50Hz
  DRY TYPE – VPI / CAST RESIN TRANSFORMER HV VOLTAGE LV VOLTAGE FREQUENCY			25/40/63/100/250/315/400/500/630/750 /1000/1250/1600/2000/2500kVA 3.3/6.6/11/22/33kV 433V,3PHASE Or custom built 50Hz
  RING MAIN UNIT (RMU)			11/22/33kV,3 PHASE,50HZ SWITCH – 630/1250A,21/26.3KA,3PHASE BREAKER – 200/630A,21/26.3KA,3PHASE
  VACUUM CIRCUIT BREAKERS (VCB)			11/22/33kV,3 PHASE,50HZ 200/400/630/1250A,18.4/21/26.3KA,3PHASE
  LOAD BREAK SWITCH (LBS)			11/22/33kV,400/630A,3 POLE, AIR BREAK WITH FUSE ARRANGEMENT AND SHUNT TRIP COIL 230V AC
  TRANSFORMER			3.3/6.6/11/22/33kV / 433V 3Phase,50HZ WITH OFF CIRCUIT TAP CHANGER / ON LOAD TAP CHANGER, Dyn11
  LV BREAKER INCOMER MAIN BREAKER – DISTRIBUTION ACB'S / MCCB 'S			433V,3 PHASE,50Hz 100A TO 4000A, 65KA UP TO 10NO'S ACB'S / MCCB 'S