Industry notes
Blog
Practical notes on transformer selection, Ecodesign losses, PV transformers and grid connection in Europe. No marketing – just engineering.
Operation
How far can you overload a distribution transformer – and for how long?
3 Oct 2026
Technology
Short-circuit withstand: what happens inside a transformer during a 2-second fault
2 Oct 2026
Selection
Hot rooms and high altitude: how ambient conditions reduce a transformer's rating
1 Oct 2026
Technology
The 6-kelvin rule: how temperature decides the life of a transformer
30 Sep 2026
Technology
Harmonics, K-factor and transformers: when non-linear loads call for derating
29 Sep 2026
Installation
Commissioning a distribution transformer: the 12 checks before the first switch-on
28 Sep 2026
Installation
Transport, unloading and installation of a distribution transformer: the checklist
27 Sep 2026
Standards
CE marking of transformers: which directives apply and what the declaration must contain
26 Sep 2026
Quality
What a transformer routine test report actually tells you
25 Sep 2026
Technology
ONAN, AN, AF: transformer cooling classes and how fans add 40 % capacity
24 Sep 2026
Standards
C3, E3, F1: what the climatic, environmental and fire classes of a cast-resin transformer mean
23 Sep 2026
Technology
Mineral oil or ester fluid? Fire safety, environment and cost in oil-immersed transformers
22 Sep 2026
Technology
The off-circuit tap changer: ±3×2.5 % explained, and when you need an on-load tap changer
21 Sep 2026
Installation
Transformer noise: what the dB(A) figure means and how to keep the neighbours happy
20 Sep 2026
Technology
Hermetically sealed transformers: how the corrugated tank replaced the conservator
19 Sep 2026
Technology
Parallel operation of transformers: the five conditions and what happens if you ignore them
18 Sep 2026
Technology
Transformer inrush current: why a 630 kVA unit can draw 10 kA at switch-on
17 Sep 2026
Economics
No-load losses, load losses and the real cost of a transformer over 30 years
16 Sep 2026
Technology
Short-circuit impedance uk: what 4 % or 6 % means for your installation
15 Sep 2026
Technology
Dyn11 or Dyn5? What the vector group means and when it matters
14 Sep 2026
Photovoltaics
Transformers for photovoltaic plants: why 0.8 kV and what else to specify
13 Sep 2026
Selection
Oil-immersed or cast-resin? How to choose between the two transformer types
12 Sep 2026
Standards
Ecodesign Tier 2 explained: the loss limits every EU transformer must meet
11 Sep 2026
Selection
How to choose the right kVA rating for a distribution transformer
10 Sep 2026
Contact
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