The TIEPCO Unit Substation conforms to the latest IEC and prevailing utility standard (32-SDMS-01) and is designed and manufactured utilizing the in house expertise and state of the art technology. TIEPCO manufactured Unit substation has following salient features:

  • Is up to 17.5KV on HV side and up to 400V on LV side
  • Main busbar rating up to 400A on HV side and up to 4000A on LV side.
  • Upto 1500 kVA

UNIT SUBSTATION COMPRISES OF TWO SECTIONS:

A-TRANSFORMER  SECTION
Rated Voltage 17.5KV
Rated Capacity 1500 KVA
Rated Primary Voltage 13.8KV
Rated Secondary Voltage UP TO 400V AC
Cooling  ONAN
Paint RAL7033
B- LOW VOLTAGE COMPARTMENT
Having LV Switchgear As Per Rating Of Transformer Enunciated below:
COMPONENTS UNIT SUBSTATION RATING
300kVA 500kVA 1000kVA 1500kVA
231/133V 400/231V 231/133V 400/231V 231/133V 400/231V 231/133V 400/231V
LV Panel Incoming Busbar / Link rating – min. (A) 800 500 1600 800 3000 1600 4000 2500
CT rating on incoming Busbar (A) 750/5 750/5 1500/5 750/5 3000/5 1500/5 4000/5 3000/5
Number of Outgoing MCCB,s rated 400A 2 1 4 2 6 4 7 5
Provision of space for Spare MCCBs 2 1 4 2 6 4 7 5
Phase Busbar min. rating (A) 800 500 1600 800 3000 1600 4000 2500
Symmetrical Short Circuit Rating for 2 sec. (rms), kA 25 25 25 25 40 25 65 40