33 kV CURRENT TRANSFORMERS FOR HIGHER CURRENT RATIO

1. Name and address of Manufacturer :  Twiclo Electrical Industries, Raipur
2. Type :  Outdoor, Oil filled, Vacuum Impregnated
3. Manufacturer’s Designation :  COF
4. Rated Voltage/Highest Voltage :  33 kV / 36 kV *
5. Rated Primary Current :  As per spec Amps *
6.  Secondary Core details :
     a. Number of Cores :  One
     b. Rated Secondary Current :  1 or 5 Amp *
     c. Rated Output :  as per spec VA *
     d. Class of accuracy :  as per spec VA *
     e. Accuracy limit factor :  as per spec VA *
7.  Turns Ratio :   Nominally same as transformation ratio
8.  Short time thermal current & its duration :  As per spec kA
9.  Rated dynamic current (peak value) :  2.5 times of short time thermal current kA*
10.     a. Rated continuous thermal current :  Same as rated primary current *
           b. Temperature rise over ambient :  Within limits prescribed by IS. *
11.  Impulse withstand test voltage :  170 kV (Peak)*
12.  One-minute power frequency dry/wet withstand test voltage on primary :  70 kV *
13.  One-minute power frequency withstand test voltage on secondary :  3 kV *
14.  Total creepage of insulator :  900 mm minimum *
15.  Whether CT is hermetically sealed :  Yes.
16.  Quantity of oil :  Approx. 16 Liters.
17.  Total weight :  Approx. 70 Kgs
18.  Mounting Details :  As per drawing
19.  Equipment conforms to specification :  IS 2705
20.  Overall dimensions :  As per our drawing

Note: Only items marked * are guaranteed. All others are indicative and subject to change.

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