13.8kV 3.15 MVA Transformer

  • Primary Voltage Ratings: 13800V Delta
  • Secondary Voltage Ratings: 480v Wye
  • CONNECTION TYPE: Dyn11
  • Standards: IEC 60076
  • Application: Oil field
  • Power Rating: 3.15 MVA
  • Certificate: UL/CE
  • Cooling Method: ONAN

The 3.15 MVA transformer, delivered by Daelim Transformer to a Middle Eastern customer in September 2024, is designed for use in oil fields. Its tank is constructed from 304 stainless steel, which effectively prevents corrosion and withstands harsh environments. Featuring double-wound copper material, it includes five-step voltage regulation of ±2.5%. The transformer’s winding temperature rise is 55°C, allowing it to operate continuously in high-temperature conditions. With over 20 years of experience in designing and manufacturing transformers, we can customize any transformer to meet your needs. Contact us now to get a price and proposal.

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13.8 kV 3.15 MVA Transformer Specifications

TECHNICAL DATA SHEET FOR 3.5MVA TRANSFORMER
1 RATED POWER 3.15MVA
2 HIGH VOLTAGE 13.8kV
3 LOW VOLTAGE 0.480kV
4 RATED CURRENT HV/LV HV131.78 A/ LV 3788.86 A
5 INSULATION LEVEL HV/LV U 110 AC 38 / 30 AC 3
6 NUMBER OF PHASES 3
7 TAP CHANGER ( HV SIDE ) DE ENERGIZED
8 NUMBER OF STEPS 2 ABOVE AND 2 BELOW
9 STEP SIZE(PERCENT ) +5%，+2.5%，0%，-2.5%，-5%
10 TYPE OF COOLING ONAN
11 TRANSFORMER TYPE OIL IMMERSED 2-WINDING TRANSFORMER
12 APPLICATION OUTDOOR
13 WINDING MATERIAL COPPER
14 IMPEDANCE AT 85°C 7.50%
15 NO LOAD LOSS 45 kW 
16 LOAD LOSS AT 85°C 35 kW 
17 TOTAL LOSS 39 kW 
18 MAXIMUM AMBIENT TEMPERATURE 50C
19 TOP OIL TEMPERATURE RISE 50°C
20 WINDING TEMPERATURE RISE 55°C
21 NOISE LEVEL PRESSURE NOT TO EXCEED 70 dB(A)
22 HIGH VOLTAGE BUSHING TERMINATION SIDE MOUNTED JUNCTION BOX
23 LOW VOLTAGE BUSHING TERMINATION SIDE MOUNTED JUNCTION BOX
24 SPECIFICATION IEC60076
25 TYPE OF OIL MINERAL OIL AS PER IEC 60296
26 OIL WEIGHT 2760 KGS
27 WEIGHT OF CORE & WINDINGS 3300 KGS.
28 TOTAL WEIGHT WITH OIL 9750 KGS
29 DIMENSION OF TRANSFORMER (LxWxH) (mm) 3800 x 3217 x 2437 mm
30 STYLE CORE FORM
31 TEMP. RISE OIL 45°C
32 TEMP. RISE WINDING 50*C
33 QUANTITY OF OIL 2766 LTR.

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