3.3kV 1.6 MVA Transformer

Primary Voltage Ratings: 3.3 kV
Secondary Voltage Ratings: 380V
H.V. TAP RANGE: +-5%
TYPE: OIL
Standards: IEC
Power Rating: 1.6MVA
Cooling Method: ONAN

The 3.3 kV, 1.6 MVA transformer is being exported to Saudi Arabia and features two copper windings. It has a primary voltage of 3.3 kV and a secondary voltage of 380 V, with ONAN cooling and a DYN 11 vector group. Essential protection equipment is included, along with a on-load tap changer, all compliant with IEC standards. Additionally, all necessary diagrams and certificates are provided.

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1.6 MVA Transformer Specifications

a. Two copper windings, oil-immersed distribution transformer

b. Primary voltage: 3-phase, 3.3 kV, 50 Hz

c. Secondary voltage: 3-phase + Neutral, 380 V, 50 Hz

d. Rated power: 1.6 MVA @ ONAN

e. Cooling type: ONAN

f. Connection: △/Y

g. Vector group: DYN 11

h. Ambient temperature: 55 °C; temperature rise: 50 °C; insulation class: A

i. Protection and control equipment: All devices must be connected to a local control panel fixed on the transformer:

Buchholz relay (alarm and trip)
Pressure relief device (trip)
Oil level indicator (alarm and trip)
Dehydrating breather
Oil thermometer (alarm and trip)

j. Tap changer: Manual on-load tap changer with 5 steps (+5%, +2.5%, 0, -2.5%, -5%) for the 1.6 MVA transformer.

k. Installation: Outdoor installation with wheels.

l. Insulation oil: Included and free from any materials that may contain PCB.

m. Rigid-type oil tank: Installed on the transformer with level indication and a rubber bag in the conservator.

n. Weatherproof IP54 junction box for both LT and HT; cable connections to be made from the bottom of the junction box. Cable supports installed with the transformer for power cables.

o. Design: All specifications meet or exceed IEC standards as minimum requirements.

Daelim Transformer provides all electrical diagrams, drawings, required installation, maintenance, operation catalogs, and test certificates.

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For detailed specifications, further inquiries, or to request a quotation, please reach out to Daelim Transformer directly. We are committed to providing you with the highest quality transformers tailored to your needs.