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Instruction Manual

© GE Grid Solutions

INSTRUCTION MANUAL NUMBER MIITR101

INDUCTIVE VOLTAGE TRANFORMER

OTEF-72 / OTEF-123 / OTEF-145 / OTEF-245

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Summary of Contents for OTEF-72

Page 1: ...Instruction Manual GE Grid Solutions INSTRUCTION MANUAL NUMBER MIITR101 INDUCTIVE VOLTAGE TRANFORMER OTEF 72 OTEF 123 OTEF 145 OTEF 245...

Page 2: ...truction Manual GE Grid Solutions GE Grid Solutions Av Nossa Senhora da Piedade 1021 37504 358 Itajub MG Brazil AIB 01 30 10 2017 PRB TAA AIB 00 24 11 2013 TAA TCRP Owner revision Date Prepared Approv...

Page 3: ...nd complied with THESE VOLTAGE TRANSFORMERS CAN NOT BE STORED IN A HORIZONTAL POSITION FOR MORE THAN FOUR MONTHS IN CASE OF HORIZONTAL TRANSPORTATION IF THE TIME OF TRANSPORT AND STORAGE EXCEEDS FOUR...

Page 4: ...HORING 9 4 CONTACT SURFACES PREPARATION 9 5 CONECCTIONS 9 5 1 Primary terminal 9 5 2 Secondary terminals 9 5 3 Terminal marking 10 5 4 Grounding 10 6 BELLOWS BLOCKING SYSTEM FOR TRANSPORTATION 10 7 OI...

Page 5: ...teristics of the OTEF voltage Transformers 1 High voltage terminal 2 Insulation system paper impregnated with oil 3 Secondary terminal box 4 Oil level indicator 5 Metallic bellow 6 Insulator porcelain...

Page 6: ...e to the equipment 2 2 Reception Whether the shipment is of manufacturer s or customer s responsibility the customer inspector or the service agent has to check the following on receipt of delivery If...

Page 7: ...e with care VT packed in vertical position 1 Remove upper cover 2 Remove the smaller extremities 3 Remove the wood blocking pieces 4 Remove the larger extremities 5 Remove the four screws at the equip...

Page 8: ...do not damage the top cover After confirming that the VT is in vertical position and supported in the ground change the lift system by four slings positioned at the four lifting holes located in the...

Page 9: ...etallic brush diameter of the thread 0 3mm and impregnate with grease of the type PENETROX or equivalent All the surfaces must be completely covered with grease For silver or tinned contacts only clea...

Page 10: ...ed grounding connector if requested supplied with the equipment See set of drawings to confirm rage of cable that can be used Example of grounding terminal Example of grounding connector 6 BELLOWS BLO...

Page 11: ...area shows the normal operation condition and higher and lower areas are shown with a red strip In normal conditions the indicator shows the central green area In case of oil level indicator is in ei...

Page 12: ...T from the same circuit After one year of operation it is recommended a detailed inspection of tightening torques and oil leakage and thereafter twice per year according to the substation maintenance...

Page 13: ...perform such an activity Material contaminated with oil Co processing or incineration at a company which is properly licensed by the state s responsible agency Porcelain insulator Industrial landfill...

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