Three-Phase Ester-Oil Pad-Mounted Transformer, 5– | RFQ Sourcing Details

This three-phase pad-mounted transformer is designed for medium-voltage power distribution projects requiring a compact, oil-immersed unit with configurable electrical ratings.

The documented capacity range is 5–10 MVA, with high-voltage options of 3.3, 4.16, 13.2, 13.8, and 34.5 kV and low-voltage options of 0.23, 0.24, 0.4, and 0.48 kV. Custom voltage configurations are listed as available. For ester-fluid configurations, the stated cooling methods are KNAN and KNAF.

Mineral-oil ONAN and ONAF configurations are also listed. The transformer is specified for 50 or 60 Hz service, with two windings, loop or radial feed arrangements, and three-limb or five-limb core options. Listed vector-group choices include Dyn11, Yy0, Dd0, and YNd11.

The stated impedance range is 3–10%, while the high-voltage tapping range is ±2 × 2.5%;customized values are offered for both parameters. Available winding materials are listed as aluminum or copper, and the core-material choices are silicon steel or amorphous alloy.

Other stated parameters include A/E insulation classes, off-load tap changing, 60/65 K temperature-rise options, ambient operation from -25°C to +50°C, and altitude below 3,000 m. The product information identifies IEC, IEEE, ANSI, UL, and KEMA references and lists CE, UL, and KEMA product certifications.

Buyers should obtain the applicable certificates and test documentation for the exact ordered design rather than assuming every configuration carries every listed approval.

The transformer is presented for distribution duties including power grids, data centers, wind farms, solar-energy facilities, industrial areas, residential neighborhoods, commercial centers, factories, mines, harbors, ports, and grid-renovation projects.

Because the available ratings and construction choices cover multiple configurations, final suitability depends on an approved project-specific specification.

Before procurement, confirm the required capacity, primary and secondary voltages, vector group, system frequency, impedance, tapping range, feed arrangement, winding and core materials, insulation levels, cooling mode, fluid type, temperature-rise limit, ambient conditions, and installation altitude.

Buyers should also define required accessories, monitoring functions, protection equipment, enclosure arrangement, terminal interfaces, applicable standard edition, certification scope, routine and type tests, drawings, losses, sound limits, dimensions, mass, delivery schedule, warranty, and commissioning responsibilities.

These items are not fully established for a specific supplied unit by the available product facts.