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Sl No

Description & Required Quantity

10

TECHNICAL SPECIFICATIONS OF 12000KVA STARTING DUTY AUTO TRANSFORMER

REQUIRED QUANTITY = 1 NOS

A. GENERAL:

1.

Applicable Indian Standard: IS: 2026 - 1977 with latest amendments.

2.

Service duty

: Starting duty Auto Transformer

3.

Installation

: Outdoor

4.

Make: NGEF, Crompton Greaves, Alstom, Bharat Bijlee.

  • B.

    SITE CONDITION:

    • 1.

      a) Maximum Ambient air temperature: 40 º C

  • b)

    Minimum Ambient air temperature: 6.0 º C

    • 2.

      Maximum humidity at site (at 40 º C): 98 %

3. Surrounding atmospheric condition

: Humid

4. Site altitude

: 120mtr

5. Seismic design co-efficient

: As per IS: 1983

6. Rainfall

: High.

  • C.

    RATING AND GENERAL DATA:

    • 1.

      Short time KVA Rating: 12000KVA.

    • 2.

      No. of phases: 3.

    • 3.

      Frequency: 50HZ ± 3 %

    • 4.

      Type: Oil - immersed (mineral oil as per IS: 335/1963)

    • 5.

      Type of cooling: ONAN

    • 6.

      Installation: Outdoor

    • 7.

      Vector group: YNaO

    • 8.

      Rated no load voltage

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ANNEXURE – I

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