Our experience in producing over 2,000 designs
means we can produce every type of transformer
CHK can produce transformers and wound components to meet every possible specification and have
developed over 2,000 original designs. Whatever your requirement, we can come up with
exactly the right component for it.
Within these general descriptions, we can design and manufacture all types of coils.
We specialise in:
Voltage rating up to 5KV
Current rating up to 100 Amperes
VA rating up to 5KVA, Single Phase and Three Phase.
The coils are supplied precisely to your specification. Basically we need to know:
primary voltages, secondary voltages and currents.
For special applications, such as a transformer for a stabilised DC power supply, you can
safely leave all the other specifications to us.
We will advise you on regulation, temperature rise, rating (continuous or intermittent),
insulation resistance, proof testing, construction, mounting and terminations, also on
methods of reducing costs.
Our normal designs use toroids, open type laminations and 'C' and 'E' cores with varnish
penetration or full vacuum and pressure impregnation.
Completely enclosed transformers embedded in resin or polymers can be supplied and sub-
assemblies added to hold mains selectors, fuses and connectors.
Guide specifications are UL, CSA, IEC, BASEEFA, EN, CEE, IS0 and BS.
These specifications are supplemented by our own experience and your own
New EU Directives will affect your business, we can help
With the new EU directives on the Recycling of Hazardous Waste (RoHS) and Waste of Electrical and Electronic Equipment (WEEE) taking effect in 2006, we have
gained a leading edge reputation in this field over the last seven years and can advise you on the stringent standards you will have to reach.