Ex Australian broadcast industry DIN41612 power modules
These were the earlier toroids used in this equipment, prior to sourcing locally - often through Harbuch or Talema
ILP TRANSFORMERS - Toroidal Power Transformer
Made in United Kingdom
Model: 32013
Single identification label which unfortunately does not tell you much (unlike the local product which often had a schematic on the side with wire colour coding, including "beginning of winding" indicators so that the phasing of the two secondary windings could be correctly sorted out. The label on these transformers lacks all of this information.
Primary: 230 ~ 240V AC input (Orange/Orange)
Secondaries (Dual (Isolated): 15V each winding
Secondary 1: Red & Yellow
Secondary 2: Blue & Grey
Power rating is ESTIMATED around 160VA in total, based on the toroid size and secondary (solid enamelled) wire diameters
Non-potted (no epoxy resin fill in the centre)
Supplied complete with the upper & lower rubber pads, metal pad and through bolt with nut.
Physical measurements:
93mm OD x 35mm ID x 30mm height
Weight: 825g
All flying leads are a minimum 90mm length for the primary & 170mm length for the secondaries
Primary leads are solid core, 0.42mm OD enamelled copper wire with an outer PVC sheath
Secondary leads are solid core, 0.9mm OD enamelled copper wire with an outer PVC sheath
All leads have been tinned, ready to use once again.
COSMETIC CONDITION:
USED - Ex broadcast power modules (linear PSU's)
TESTING:
Test measurements made of each transformer, under NO LOAD conditions
Secondary 1: 16.6V
Secondary 2: 16.6V
I confirmed that there is total isolation between Primary & Secondary windings (this is NOT an auto transformer!) and both secondaries are electrically isolated from each other.
NOTES:
It is very important to get your winding phases correct, particularly when using the secondaries in parallel (same voltage but greater current capability)
Unfortunately ILP Transformers does not help here BUT I noticed that Harbuch used identical colour coding on their "locally produced" transformers (most likely this was part of the procurement specifications) and the colour coding HARBUCH used was ...
For series connection of the secondaries, join Yellow & Blue and take your output from Red & Grey
To be absolutely sure, taking a look on a scope will tell you the answer in any case ...
