Toroid transformer help

glennkaspar · 3rd November 2020, 01:11 PM

Need help with transformer that was in a Arcam AVR 350 240v model
with the wiring as determining what's what as all wires are black with little color tags except the green earth wire.
Its Noratel UK
P/N Tl- 053160 AU
A wiring diagram would be good if anyone has one.
Photos below.
Thanks
Glenn Kaspar
glennkaspar@gmail.com
gvkaspar@bigpond.com

Chuck Gutsup · 1st December 2020, 04:49 AM

Have the coloured tabs got any markings?
Or get in touch with Noratel.

duncan2 · 3rd December 2020, 04:07 PM

Noratel is an Indian company (Kerala ) obviously don't like the local inhabitants repairing their transformers .

astouffer · 3rd December 2020, 06:45 PM

Taking a guess that the ferrite filter is on the primary. If you have an ohm meter you could label the wires and sketch up a diagram. You won’t know the phases though.

peranders · 3rd December 2020, 06:59 PM

Start to identify all windings with a ohm meter.

JMFahey · 3rd December 2020, 07:41 PM

Schematic:
ARCAM AVR350 SCH Service Manual download, schematics, eeprom, repair info for electronics experts

Download it, upload the power supply page here, and it will be much easier to answer your doubts.

3rd December 2020, 06:59 PM	#5
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden	Start to identify all windings with a ohm meter. __________________ /Per-Anders (my first name) or P-A as my friends call me

3rd December 2020, 07:41 PM	#6
JMFahey diyAudio Member Join Date: Mar 2009 Location: Buenos Aires - Argentina	Schematic: ARCAM AVR350 SCH Service Manual download, schematics, eeprom, repair info for electronics experts Download it, upload the power supply page here, and it will be much easier to answer your doubts. __________________ Design/make/service musical stuff in Buenos Aires, Argentina, since 1969.

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1st December 2020, 04:49 AM	#2
Chuck Gutsup diyAudio Member Join Date: Dec 2020 Location: London, UK	Have the coloured tabs got any markings? Or get in touch with Noratel.

3rd December 2020, 04:07 PM	#3
duncan2 diyAudio Member Join Date: Mar 2013 Location: Scotland.	Noratel is an Indian company (Kerala ) obviously don't like the local inhabitants repairing their transformers .

3rd December 2020, 06:45 PM	#4
astouffer diyAudio Member Join Date: Jun 2004 Location: Pittsburgh, crumbling wasteland	Taking a guess that the ferrite filter is on the primary. If you have an ohm meter you could label the wires and sketch up a diagram. You won’t know the phases though.