TF702512342:
Three-phase oil distribution transformer

In accordance with the standards
EN 50588-1 AAoAk
Eco design (Eu) 548-204 TIER 2
CEI 60076-1
Extra reduced losses AAoAk

Rated power250 kVA
Rated primary voltage12 300 V
Rated secondary voltage (off load)420 V
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Standard technical specifications

  • Cooling: ONAN (natural)
  • Thermal classification-(Heatings) oil and windings: A- 60/65 K
  • Max. ambient t°: 40°C
  • Rated primary voltage (one primary voltage such as): +-2,5+-5%
  • Max. rated primary insulation level: 17,5 kV
  • Vector group: Dyn11
  • Frequency: 50 Hz
  • No load losses: 270 W
  • On load losses by 75°C: 2350 W
  • Impedance voltage: 4%
  • Voltage drop at full load:
  • At P.F. =1: 1,02%
  • At P.F. =0,8: 3,12%
  • Efficiencies To confirm: 4/4 3/4 2/4 1/4
  • By cos phi=1: 98,93 99,11 99,25 – %
  • By cos phi=0,8: 98,66 98,89 99,06 99,00 %
  • Noise level:
  • Acoustic pressure at 1 m (Lp): 36 dBA
  • Acoustic power level (Lw): 46 dBA
  • Overall dimensions: L x W x H: 1080 x 760 x 1540 mm
  • Total weight: 1345 Kg
  • Oil weight: 235 Kg

Fittings

Standard fittings:

  • 2 earthing terminals
  • 2 lifting lugs
  • 1 rating plate Cotrabel French / Dutch
  • 1filling plug
  • 1 drain valve DIN
  • 4 bi-directional flat rollers
  • 3 HV plug in connectors fixed Part only
  • 4 LV Porcelain Bushings DIN with their cable clamps
  • 1 DMCR
  • 7 LV welded studs

Execution

  • Hermetical sealed type
  • Mineral oil in accordance with the standard IEC60296 class II
  • Bolted cover
  • Overloads in accordance with the standard IEC 60354
  • Tolerances in accordance with the standard IEC 60076-1
  • Aluminium windings

Remark

Po and Pcc losses without tolerances (Commission Regulation(EU) N° 548 of 21st May 2014.