BS EN 61558-1:1998
General requirements + tests
The umbrella safety-of-transformer standard for power supplies and similar products. Every product family conforms.
Compliance · Reliability
Quality standards.
CE-marked. ISO 9001 procedures. Every unit tested before leaving Larnaca. Forty-seven years of high-temperature Gulf service is our acceptance test.
European standards
Built to four British and European specs.
Every product family conforms. Documented procedures, tests, and inspections run throughout production; records live in a technical file available for inspection on request.
BS EN 61558-2-2:1998
Control transformers
Particular requirements for control-transformer designs used in switchgear and distribution boards.
BS 171:1978
Power transformers
The classic British Standard for power-transformer construction and rating tests.
BS EN 60947-4-1:1992
Switchgear & controlgear
Low-voltage switchgear requirements that apply to motor-starting autotransformer designs.
CE-marked, every unit
Manufacturer's Declaration of Conformity ships with every transformer.
Honest dimensions
Catalogue dimensions cover the total brut envelope — connectors and mounted parts included. W × D × H in cm.
Tested under load
Records maintained in a technical file. Available for inspection if your audit needs them.
Overload reliability
Designed to take 200% load — without damage.
The acceptance criterion every Transfonix transformer is built to. Real-world overload tolerance, not just nameplate ratings.
- for ½ hour
- 200%
- for 1 hour
- 150%
- for 4 hours
- 125%
load
load
load
Need the standards documented?
Request a Manufacturer's Declaration of Conformity or the relevant test records for your project — we'll send them with the quote.