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2 / 16

    • a)

      Primary: 11000

    • b)

      Secondary: 7150-6600-6050

  • 9.

    Amperes Short time

    • a)

      Primary: 630

    • b)

      Secondary: 969-1050-1145

  • 10.

    Temperature rise over ambient 40º C

  • a)

    In oil

  • b)

    In winding by resistance

: 45º C

: 55º C

11. This transformer should be designed for starting duty of 5000HP, 11KV, 3 phase, squirrel cage induction motor. Short time rating is for one minute. Maximum permissible starts are 3 nos. per hour, starting from cold including 2 consecutive starts.

12. Only one secondary voltage tape will be used at one time. Winding terminals 1U2, 1V2, 1W2 brought out to a separate cable box to form star point will be made through 11KV breaker by OIL.

13. TERMINAL ARRANGEMENT:

11000 Volt winding line end

: Cable box with bushings.

Star Point end

: Cable box with bushings.

7150 Volt end

: Cable box with bushings.

6600 Volt end

: Cable box with bushings.

6050 Volt end

: Cable box with bushings.

14. BUSHING:

Suitable for site condition mention in Para- B & conforming to IS: 2099.

15. CABLE BOX:

a) Each cable box armoured, stranded Bottom plate should bushings are required

should be suitable for termination of 1 no. 3 C, 240sq. mm XLPE,

copper conductor cable with heat shrink type be detachable. Cable Boxes (Outdoor type) as for supporting the cable connection.

cable termination.

per

IP55.

Suitable

b) Terminals should be marked as per IS: 2026 - 1977.

  • 16.

    TRANSFORMER CORE

    • a)

      Material: High-grade cold rolled grain oriented Silicon steel.

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