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Capability / FIG.05

Transformer
manufacturing

Custom magnetics designed, wound and tested in-house — UPS & inverter, three-phase, ferro-resonant and earthing transformers from 100VA to 25KVA, single and three phase.

Transformers assembled at Annika Power System FIG.05 — Transformer Assembly
Power Rating
100VA–25KVA
Phases
1Φ &
Switching
IGBT / MOSFET
Regulation
Ferro-resonant
Built for the hardest jobs

Magnetics engineered to spec

Every transformer is designed, wound, impregnated and tested in-house, against your electrical and mechanical specification. From online sine-wave UPS systems to high-load industrial drives, we build the magnetics your power system depends on — from prototype through full-scale production.

How a transformer transforms

Set the turns,
see the voltage

A transformer steps voltage up or down by the ratio of its windings. Move the sliders — watch the copper turns, the magnetic flux and the output respond.

PRIMARY SECONDARY Φ FLUX AC IN OUT
What we build

Transformer range

Standard configurations and fully bespoke magnetics, wound to your spec.

Range of UPS and inverter transformers in multiple sizes
100VA – 25KVA

UPS & inverter transformers

For online sine-wave UPS and inverter systems — IGBT & MOSFET compatible, single and three phase.

Annika custom-wound transformers

Custom components

Fully bespoke magnetics designed, wound and tested in-house against your exact electrical and mechanical tolerances.

Single Annika transformer, front view

Single-phase transformer

Compact single-phase magnetics, wound, impregnated and tested in-house for reliable field performance.

Capability sheet

Engineering
specifications

A summary of what we wind and test. Exact ratings and standards are confirmed per project.

Power rating
100 VA – 25 KVA
Phases
Single phase & three phase
Types
UPS & inverter · three-phase · ferro-resonant · earthing · custom magnetics
Switching compatibility
IGBT and MOSFET driven systems
Core & construction
EI, UI and gapped cores · copper windings
Treatment
Vacuum impregnation · baking · lacquering for long field life
Testing
Automated, every-unit testing against performance benchmarks

// Spec values describe typical capability — confirm ratings, frequency and applicable standards with our team.

Inside the plant

Our capabilities
include

A complete magnetics line — wound, encapsulated, impregnated and tested in-house.

01

Vertical winding machines

Efficient, space-saving production of copper coils with consistent accuracy.

02

Linear winding machines

Multiple machines optimised for different coil sizes and wire types.

03

Encapsulation system

Protects components and improves thermal performance and heat dissipation.

04

Automated testing

Every unit tested rigorously against strict performance benchmarks.

05

Vacuum chamber

Air-free, uniform encapsulation for superior insulation and reliability.

06

Impregnation system

Even coating across components, enhancing durability and performance.

07

Advanced lacquering

A uniform protective layer that increases product life and stability.

Where they run

Applications

Magnetics built for the systems that keep power clean, stable and available.

UPS & invertersIndustrial drivesPower conversion Renewable energyNeutral groundingVoltage regulation

Need a transformer wound to spec?

Send us your electrical and mechanical requirements — we'll design, wind and test it in-house.

Specify a transformer