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.