Core & Coil
Makitel Dooel
Makitel Dooel is a member of Trafitalia Group which was founded in 2006 with the objective of supplying quality transformers to the international market. The holding group consists of three companies, two of them located in Italy and one in Macedonia.
Tank integrity is essential for reliability and long transformer life. To ensure a perfect fit to the application, Makitel designs all transformer tanks to high internal standards taking customer specifications into account. Hot-rolled, low carbon steel plates are cut to critical tolerances then joined via submerged arc welding to ensure against cracked seams and irregularities. The tanks are being tested with high preassure 50-100% greater than achieved during normal operation. The corners of the ribs are being Bent (no welds). Exterior surfaces are primed with a two-part epoxy primer and top-coated using two-part urethane high gloss finish coat as requested.
In the test room, the transformers are subject to a series of measurements and tests. Routine tests are carried out on all transfomers prior shipping. Once the routine tests are complete, the protection instruments and other accessories are fitted on the transformer and then the transformer is subjected to a complete final check. Subsequently the rating plate is fixed on the tank.
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Voltage ratio and phase displacement IEC 60076-1
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Insulation resistance IEC 60076-1
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Applied Voltage test IEC 60076-3
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Induced voltage test IEC 60076-3
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No load loss test IEC 60076-1
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Winding resistance IEC 60076-1
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Impedance and load loss test IEC 60076-1
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Control wiring, auxiliary operation
Upon request, winesse type/special tests can be carried out.