Medium Voltage Transformer Selection Guide
How to specify a medium voltage transformer: system data, BIL, vector group, impedance, tapping, cooling, enclosure and the switchgear interface.
Selection Guides
Selection Guides
How to Choose Transformer Capacity?
How to choose transformer capacity for industrial and commercial sites: standard ratings, load factor, losses, headroom and the cost of getting it wrong.
Selection Guides
How Much Transformer Capacity Does a Factory Need?
Determine how much transformer capacity a factory needs: connected load, diversity, motor starting, harmonics, growth margin and when to use multiple units.
Technical Guides
How to Calculate Transformer Load?
Calculate transformer load from measured current, convert between amps, kVA and kW, work out load factor and decide whether your transformer is correctly sized.
Transformer Basics
What Is a Pole Mounted Transformer?
A pole mounted transformer is fixed to an overhead distribution pole. Learn how it works, typical ratings, protection and where it is used.
Transformer Basics
What Is a Pad Mounted Transformer?
A pad mounted transformer is a ground-level, tamper resistant distribution unit. Learn how it works, its components, typical ratings and where it is used.
Technical Guides
How Long Does a Distribution Transformer Last?
Typical distribution transformer service life, what actually limits it — insulation ageing, heat, moisture, overload and power quality — and how to extend it.
Technical Guides
Distribution Transformer Protection: Devices and Settings
How distribution transformers are protected: fuses, relays, Buchholz, pressure relief, temperature monitoring, and how protection coordinates with MV switchgear.
Technical Guides
Distribution Transformer Testing: Routine, Type and Site Tests
Which tests a distribution transformer should pass: routine tests on every unit, type tests for new designs, FAT and site acceptance testing before energisation.
Technical Guides
Distribution Transformer Installation: Site Requirements & Steps
Distribution transformer installation guide: foundations, clearances, ventilation, cable termination, earthing, pre-commissioning checks and energisation.