Ex workshop spare parts and R&D/manufacturing stock
ALL components were sourced through reputable local distributors such as RS Electronics, Farnell, WES and Rockby (Victoria) or direct from the manufacturer.
Old stock, around the early 2000's!
ANTRIM TRANSFORMERS (UK) - Toroidal Power Transformer
Made in United Kingdom
Antrim has now "gone" and was acquired by Trans-Tronic Ltd (UK) back around 2008
Model: H2013
*300VA (Approximately) 30V total output (2x 15V independant secondaries)
Two labels on the side
Label 1 (Safety Standards)
ANTRIM TRANSFORMERS LTD
(08494)
(28734)
TYPE H2013 IEC742
**11/91
Dual (Isolated) secondaries: 15V *150VA (around 10A) each winding
Both secondaries are currently wired in phase and in parallel (for greater current capability)
Originally these were being evaluated for battery charger designs but it was finally decided to go with a local manufacturer, Harbuch Electronics. I have a number of Harbuch toroids advertised also HERE.
All windings are colour coded and easy to identify ALTHOUGH there is no wire/colour identification on the label!
Fortunately it is not difficult to work out which secondary wire/colour does what
Orange - Orange: 240V AC Primary winding (not multi-tap, just 240V input)
Secondary 1: .Red & Yellow
Secondary 2: .Blue & Grey
. indicates "start of winding"
NOT POTTED (no epoxy resin filling/no mounting hole predrilled)
NO mounting hardware supplied (rubber or plastic discs, metal disc and central bolt)
Physical measurements:
110mm diameter
45mm centre hole
55mm height
All flying leads 175mm length
Primary leads enamelled copper wire, solid core
Secondary leads are also solid core, enamelled copper wire, ends tinned
As the photograph shows, the two secondaries are "strapped" together.
Transformer has a packed weight of 2.5Kg
COSMETIC CONDITION:
NEW, never used
I have stripped back the insulation on the orange primary leads so I could make my test measurements below.
TESTING:
To confirm the transformer is functioning properly, I have made some simple "open circuit/no load" tests.
Secondary 1 & 2: 16.1V each
This means the transformer is actually a 0-15V & 0-15V twin secondary transformer, currently strapped in parallel to give a nice grunty current capability (this type of transformer was being used for R&D in relation to Lead-Acid battery chargers)
Confirmed total isolation between Primary & Secondary windings (NOT an auto transformer - OMG!) and both secondaries are separate windings.
NOTES:
* How did I arrive at a power handling capability of 300VA? Because I vaguely remember what was required for the project and also have made a core/transformer size comparison with the Harbuch's that were eventually decided upon, those Harbuch's are 300VA
** This number on the label is NOT the manufacture date, Antrim began "life" in 1998, seven years after this date!
Either use the transformer as a high current 15V (single) source or cut the strapping away and you have a nice (still very high current capable) 15V dual AC source
