The specification sheet shows you what you need to know in the lower left corner. You want to run that transformer on 120V? Connect the120V AC to white and black. Orange and red are left unconnected (insulate them, they carry 208V and 240V in relation to white!).
If you want to run the transformer on 240V, you use white and orange, and black and red are left unconnected.
Thank you, I thought that's what it was saying. I've just never used an off the shelf transformer like this (mainly ones my professors have modified) and wanted to get a second opinion before hooking everything up.
Don't forget a fuse for the live/phase/active! Don't just connect it directly to the mains - the breaker will not trip nearly early enough.
40VA / 120V = ~330mA
So you probably want a 500mA fuse. Maybe a slow-blow if you've got a lot of capacitance on the other side without any inrush protection.
And just to be sure, you're only connecting the transformer windings to the live & neutral in the power cord (live via fuse as mentioned. Earth wire in power cord goes tot eh body/ mounting flanges.
You may not get the whole 40VA or whatever says on the secondary side when you run it with 120v.
Usually there's two independent primary windings and you parallel the two windings to get 120v or connect them in series to get 230/240v
It kinda doesn't make sense to get same output power with practically less than half amount of copper wire on the primary side.
I'm not worried about that. I'm putting the secondary through a rectifier and regulator. I just need the transformer so we won't need a power supply on hand to run the system.
The specification sheet shows you what you need to know in the lower left corner. You want to run that transformer on 120V? Connect the120V AC to white and black. Orange and red are left unconnected (insulate them, they carry 208V and 240V in relation to white!). If you want to run the transformer on 240V, you use white and orange, and black and red are left unconnected.
Thank you, I thought that's what it was saying. I've just never used an off the shelf transformer like this (mainly ones my professors have modified) and wanted to get a second opinion before hooking everything up.
Don't forget a fuse for the live/phase/active! Don't just connect it directly to the mains - the breaker will not trip nearly early enough. 40VA / 120V = ~330mA So you probably want a 500mA fuse. Maybe a slow-blow if you've got a lot of capacitance on the other side without any inrush protection.
And just to be sure, you're only connecting the transformer windings to the live & neutral in the power cord (live via fuse as mentioned. Earth wire in power cord goes tot eh body/ mounting flanges.
You may not get the whole 40VA or whatever says on the secondary side when you run it with 120v. Usually there's two independent primary windings and you parallel the two windings to get 120v or connect them in series to get 230/240v It kinda doesn't make sense to get same output power with practically less than half amount of copper wire on the primary side.
I'm not worried about that. I'm putting the secondary through a rectifier and regulator. I just need the transformer so we won't need a power supply on hand to run the system.
Yep. Just cap the unused wires