Daelim Substation Transformer | Up to 15 MVA, 44 kV

Product Overview

The Daelim substation transformer is a liquid-immersed power transformer designed for substation applications, with high-voltage ratings up to 44 kV and power ratings up to 15 MVA. It is supplied with insulating mineral oil and configured for 60 Hertz operation, with 50 Hertz available as an option. The standard design includes an externally operated de-energized tap changer with two 2.5% full-capacity taps above and below nominal, a 65 °C average winding rise, side or top mounted bushings, HV and LV flange connections, and a range of monitoring and service fittings.

Standards referenced for this transformer series include ANSI, IEEE, DOE, CSA and AS. Optional features and accessories allow the transformer to be adapted to project requirements such as forced air cooling, removable radiators, pressure relief, winding temperature devices and special impedances.

Key Features

• Insulating mineral oil
• 60 Hertz operation as standard
• Externally operated de-energized tap changer with two 2.5% full-capacity taps above and below nominal
• 65 °C average winding rise
• Side or top mounted bushings
• HV and LV flange connections
• Pressure-vacuum gauge
• Top filter press valve provision
• Liquid level gauge
• Liquid temperature gauge
• Pressure test valve
• ANSI grounding pad
• Drain / filter valve with sampling device
• Tank lifting lugs
• Corrosion resistant nameplate
• ANSI 61 paint finish, 5 mils thickness
• ANSI 70 paint finish, 5 mils thickness

Applications

• Utility substations and distribution networks
• Industrial and commercial power distribution
• Skid-mounted substation projects
• Replacement power transformer projects
• Blockchain mining farms and other large power users

Technical Specifications

Optional Features & Accessories

• 55 °C or 55/65 °C average winding rise
• Forced air cooling
• Future fan wiring and control
• Removable radiators
• Pressure relief device
• Winding temperature device
• Sudden pressure relay with or without seal in
• Devices with alarm contacts
• Top filter press valve
• HV and LV air terminal compartments
• HV lightning arresters in ATC
• Current transformers
• Neutral grounding resistor
• Special impedances
• Low losses
• Special environment (e.g., classified areas)
• Special / low sound level
• 50 Hertz
• Retrofit to specific dimensions
• Special colors
• CSA compliance

Why Choose This Product?

The Daelim substation transformer combines high-voltage capability up to 44 kV and power ratings up to 15 MVA in a liquid-immersed design referencing ANSI, IEEE, DOE, CSA and AS standards. A comprehensive set of standard monitoring and service fittings — including pressure-vacuum, liquid level and liquid temperature gauges, drain/filter valve with sampling device, and ANSI grounding pad — supports installation, operation and maintenance. Optional features such as forced air cooling, removable radiators, pressure relief and current transformers allow the transformer to be configured for specific project requirements.

Manufacturer Recommendation

Daelim has supplied substation transformers for projects in Australia, Canada, Venezuela and Mexico. Documented project examples include skid substation transformers with voltage levels of 1 kV, 11 kV, 15 kV and 35 kV and capacity ratings from 1000 kVA to 7500 kVA, a 44 kV 5000 kVA substation transformer for a Canadian client, 35 kV 4500 kVA units for a 20 MW crypto mine in Venezuela, and follow-on purchases of 5000 kVA mini substation transformers and 6 MVA transformers. The Daelim team includes a marketing team and an engineering team that support business and technical requirements.

Sourcing Guide (FAQ)

What is the voltage and power range of the Daelim substation transformer?

The transformer is available with high voltage up to 44 kV and power ratings up to 15 MVA. Project examples include units from 1000 kVA to 7500 kVA at 1 kV, 11 kV, 15 kV and 35 kV.

What frequency does this substation transformer support?

Standard operation is 60 Hertz. 50 Hertz operation is available as an optional feature.

What standards does this transformer reference?

The transformer references ANSI, IEEE, DOE, CSA and AS standards. CSA compliance is available as an option.

What standard features are included?

Standard features include insulating mineral oil, 60 Hz operation, an externally operated de-energized tap changer with two 2.5% full-capacity taps above and below nominal, 65 °C average winding rise, side/top mounted bushings, HV and LV flange connections, pressure-vacuum gauge, top filter press valve provision, liquid level gauge, liquid temperature gauge, pressure test valve, ANSI grounding pad, drain/filter valve with sampling device, tank lifting lugs, corrosion resistant nameplate, and ANSI 61 or ANSI 70 paint finish at 5 mils thickness.

Can the transformer be customized for specific project requirements?

Yes. Optional features and accessories include forced air cooling, removable radiators, pressure relief device, winding temperature device, sudden pressure relay, current transformers, neutral grounding resistor, special impedances, low losses, special or low sound level, retrofit to specific dimensions, special colors and CSA compliance.

Summary

The Daelim substation transformer is a liquid-immersed power transformer for utility, industrial and skid-mounted substation projects. With ratings up to 44 kV and 15 MVA, standard 60 Hz operation, a de-energized tap changer, comprehensive monitoring and service fittings, and options such as 50 Hz operation, forced air cooling and CSA compliance, it supports power distribution, replacement and large-load applications while referencing ANSI, IEEE, DOE, CSA and AS standards.