1 Introduction to Testing Transformers and Inductors with Constant
Current
It is a requirement of standards such as IEC60404-2, that
measurements of core loss are made under constant current test conditions.
Ideally, current transformers will also be tested with
constant current drive.
Unlike most general-purpose transformer test equipment
the AT Series Tester has a built in, fully programmable constant current
drive.
The AT Series transformer testers from Voltech contain a
wide variety of programmable signal sources.
These are used to test multiple parameters at high speed
on parts ranging from surface-mounting ferrite inductors to steel laminate
transformers of a few kVA.
By following the guidance given in these notes, customers
may also configure the AT tester to test cores, inductors and transformers
under constant ac current conditions.