GE OSKF Instruction Manual
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GE OSKF Instruction Manual

GE OSKF Instruction Manual

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INSTRUCTION MANUAL - 19201
CURRENT TRANSFORMER
TYPE OSKF
© GE Grid Solutions

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  • Page 1 INSTRUCTION MANUAL - 19201 CURRENT TRANSFORMER TYPE OSKF © GE Grid Solutions...
  • Page 2 Instruction Manual GE Grid Solutions Av. Nossa Senhora da Piedade, 1021 37504-358 Itajubá - MG – Brasil 10/11/2017 24/11/2013 TCRP Owner revision Date Prepared Approved © GE Grid Solutions...
  • Page 3 Warning! Any person involved with transport, installation, energizing, operation and maintenance of Current Transformer (CT) type OSKF must read these instructions prior to any action related to these current transformers. These CT are built under strict conditions which guarantee the Highest Quality achievement. In order to keep this high quality during CT’s lifespan, it is utmost important that the instructions in...

  • Page 4: Table Of Contents

    Grounding ........................11 6.5. Secondary terminals ....................... 11 6.6. Terminal marking ......................11 OIL LEVEL INDICATOR ......................11 INSPECTION BEFORE FIRST ENERGIZING ............... 12 MAINTAINENCE AFTER ENERGIZING ................12 PROPER DISPOSAL OF TRANSFORMERS COMPONENTS AFTER LIFESPAN .... 14 © GE Grid Solutions...

  • Page 5: General Drawing

    Instruction Manual 1. GENERAL DRAWING Description and characteristics of the OSKF Current Transformers. For more details, see set of drawings. 1. Top Cover 2. Oil Level Indicator (metallic bellows) 3. Lifting eyes 4. Primary terminals: aluminum or copper 5. Cast aluminum 6.

  • Page 6: Design And Construction

    This aluminum The active part of the OSKF current extended up to the base by an aluminum transformer located above tube which contains all secondary leads.

  • Page 7: Cast Aluminum Tank

    Capacity 10 000 N for OSKF 72, 123 and 145 KV If the crates show any signs of impact, 30 000 N for OSKF 170kV up to 550kV blows or fractures, or if the transformers...
  • Page 8 To lift the transformer with crane or munck, follow the marks on the wooden crate, once they indicate the right position for the slings (nylon belts reinforced) and avoids blows and vibrations. © GE Grid Solutions...

  • Page 9: Storage

    ASSEMBLY IN THE STRUCTURE and/or buckling in the bellow 4.1. Bellows blocking system TO AVOID DAMAGE TO THE BELLOWS DEVICE, NEVER SUPPORT ANY MATERIAL transportation purposes, ON THE BELLOWS. metallic bellows device is blocked © GE Grid Solutions...

  • Page 10: Assembly In The Structure

    The transformer shall be set up in assure a good contact. vertical position. It is very important that the surface on which the CT will be set up is flat (tolerance for no more than 1mm). © GE Grid Solutions...

  • Page 11: Primary Bar Type (If Applicable)

    6.3. Double / Triple Reconnection Primary and secondary terminal marking Primary type (if applicable) are done according to the specified standard. See set of drawing. The current ratio of the OSKF can be Primary secondary connection single with only one single bar, double or scheme are shown on schematic plates, triple primary ratio.

  • Page 12: Inspection Before First Energizing

    Instruction Manual 8. INSPECTION BEFORE FIRST ENERGIZING Never complete oil volume without prior formal authorization of GE. After putting the CT in vertical position, it is necessary to wait at Important remark: least 48 hours before putting it in During commissioning, operation.
  • Page 13 Terminals” of this document; In case of doubts, please contact the 4) Secondary terminal box: If necessary technical assistance support of GE: +55 clean inside the terminal box. 35 3629 7042 or 7038 or 7000 5) Verify oil level indicator and if there is any signal of oil leakage;...

  • Page 14: Proper Disposal Of Transformers Components After Lifespan

    Other materials Industrial landfill properly licensed The disposal of oil and components contaminated with oil directly into the soil or water is prohibited. For further information or clarifications, contact GE environment department: +55 35 36297112. © GE Grid Solutions...

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