Hi Guys,
I'm looking for some information or diagrams on Delta-Wye transformers. Most diagrams that I have got, give me information for 3 lines to a Delta configuration then on the secondary side you get the Star configuration.
I am really happy with the above concept, I would like to...
I am installing a C/U and the kitchen has some old Down lights installed with 10 x 12 volt transformers connected. I know I could disconnect all the transformers but I don't plan to do that as it will be a real pain due to how the plasterboard has been bodged. Some opinions suggest the IR...
Nicebloke
Thread
12v
connected
insulation
insulation resistance
insulation resistance test
resistance
test
transformers
Wanted to start a discussion on wiring transformers in reverse. What are some important considerations for what you wire a step-up transformer in reverse to make it a step-down transformer. And what are the important considerations when you wire a step-down transformer in reverse to make it a...
Good afternoon,
I've currently got a metal and plastic recycling facility, we normally just take in plastics but are licensed for metals. We've recently recieved some transformers to be recycled, from what I know, 500KVA Dry transformers, they weigh about 1500kg each and I've got 3 with all...
Hi guys I am currently training to be an electrician and have only been at college about 6 months. So my understanding of things isn't particular great.
Anyway I have recently come across transformers and whilst I understand the general idea is to either increase or decrease the voltage for a...
PLW
Thread
circuit
current
step down
transformer
transformers
volts
Hi all,
A customer has recently replaced some of his 12V MR16 down-lighter bulbs with LED bulbs instead. One of the transformers (which were old) failed a month or so after he installed the new bulbs and I was asked to replace both of his existing LV transformers. They supply 4 No downlighters...
Hi guys,
Had a little job today where some led downlighters were flickering it was 3 out of about 15. I checked the voltages on the 3 which told me the transformers for each one are broken. Confirmed this by testing a working one which was a getting a steady 11.5 to 12v ac.
I was just wondering...
Hi,
I believe this is a DIY job but do correct me if I am wrong. I have a number of spot lights MR16 50w which are on dimmers and I would like to change them to LED.
They all have individual transformers and I am unsure as to whether I would have to change the transformers also. Your advice...
currently took over someones job on a control 4 system "huge home automated system" due that being an extra they paid my boss separate for this. alot of lighting has Big transformers which had to be put local to the control 4. doing this i had to make connections "wagos and tape" due to many...
Mike Blair
Thread
client
complete
connections
control
cupboard
customer
electrical work
transformers
Am I right in thinking that if I had a 12v 28w constant current transformer then I could wire up as many 5w MR16s in series until I get to 28w or just below? Ie 5x 5w MR16's? Or have I got it wrong?
Cheers.
How can a 300KVA 11/0.415kv distribution transformer and a 300KVA 33/0/415KV distribution transformers be linked together to supply electricity to a town?
I am gradually replacing filament & halogen bulbs with LED versions. Whilst some LED lamps work okay with standard 12V transformers, the transformers don't like low current devices, resulting in flickering. Since the idea is to save money and energy, I don't really want to outlay large sums of...
Hello All,
We are looking for high voltage transformers and large switch gear
We can pay good prices for equipment as we refurbish the gear
Have any of the above please send me a message
Thanks
TransPro
Thread
large
low voltage
switch
switchgear
transformers
voltage
volts
I am setting up some temps on a small site consisting of approx 3 110 transformers 2 portacabins offices sitting on top of each other, a portacabin toilet and a portacabin drying room.
The supply is a 3 phase DB.
Im thinking use 1 phase for the trannys, 1 phase for the offices and the other...
Hi
I have been to replace 2 bathroom wall lights from mr16 to 2 new led lights, however due to wiring issues, I have had to put the transformers in the loft. The lights will not
work and I believe it is due the the length of the existing 12v cables and the fact the new led lights do not draw...
Hi chaps,
I'm in the midst of kitting out my motorhome (converted Renault Master).
Going to have a 1000w inverter in there to feed a couple of 230v outlets.
Trying to work out how much more efficient it will be to get a charger for my laptop which will convert directly from the 12v vehicle...
I have a Dewalt 24v chop saw. The batteries have had it and after checking online, someone have converted his drill to run off a transformer by taking the dud insides out of the battery casing and wiring in a conection to a transformer so he could then slot the battery back into his drill and...
Hello all, just been thinking over Voltage drop!!
1. Where does the 3% and 5% figures for voltage drop (VD) come from? Appendix 4 (BS7671) gives the figures but why the different values between lights and sockets?
2. Also permitted voltage levels are -6% and +10% from 230V giving a min of 216V...
Hi,
I have a question seeking member's advice pertaining to operational safety and energy saving.
We have 4 sub-station each equipped with 2 transformers (1 station 11KV/6.6KV 10 MVA, 3 other stations 11KV/.433KV 2MVA) on 2x100% stand-by configuration , secondary feeding to two bus sections...
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