Low voltage troubles

[jeeves]

Hello

I have some trouble with some low voltage halogens.

Originally, I had a LV dimmer controlling some kitchen lights.

One gang of the dimmer controlled some under cupboard lights via 1 transformer. The other gang controlled the ceiling lights via 2 transformers.

The transformers were dimmer capable, one of them was these, the others were lower power ones so as not to exceed the dimmer rating.

Anyway, this setup worked fine for about a year with no trouble. Then the dimmer started playing up and lights would turn on / off on their own (the dimmer was touch sensitive - not push button). Then one set of lights stopped working.

I figured the dimmer had probably messed up the transformer by switching on and off too much, so I replaced the dimmer with a normal 2 gang on/off switch. All was fine. But since then the different sets of lights go out randomly. The transformers are getting power, but are not outputing anything (0V).

My question is, what do you think has caused this? Do you think the faulty dimmer could have weakened the transformers to the point they randomly fail. I don't want to get replacement transformers if the same is to happen again.

Any thoughts/help much appreciated!

 

[breezer]

Transformers do just fail

i have a few and for no reason one just gave up the ghost

 

[ban-all-sheds]

FYI:

The IEC definitions of voltage bands are:

Extra Low Voltage: AC below 50V and DC below 120V

Low Voltage: 50 - 1000V AC or 120 - 1500V DC

Medium voltage: 1kV - 35kV

High voltage: 35kV - 230kV

Extra-high voltage: >230kV

 

[breezer]

but we knew what he meant

 

[ban-all-sheds]

I know - just spreading the word...

 

[breezer]

I wish you luck then. but since your favorite place to hate call them low voltage you have a big struggle

 

[securespark]

I know - just spreading the word...

Hallelujah!!

 

[ban-all-sheds]

I wish you luck then. but since your favorite place to hate call them low voltage you have a big struggle

Perhaps I should start buying lamps there, and keep taking them back for a refund saying "I connected it to a low voltage supply...."

 

[SeanT]

12V lamp to 1500VDC - that'd be pretty bright for a millisecond or so!

 

[333rocky333]

Hello
The transformers are getting power, but are not outputing anything (0V).

What did you measure 0volts with.

Some meters do not read the voltage from a electronic transformer.

I personally would connect the output ends directly to a spare good lamp, preferably via a new lampholder , to confirm the output,before writing off the transformer.