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KeepItSimpleStupid
- Joined Mar 4, 2014
- 5,088
The spec sheet doesn't even give the VA specs and this is GE, the guys that build nuclear reactors. It's shamefull. I'm sure it's not a gazillion Watts.
The primary and secondary of a transformer don't really matter a whole lot. The VA rating will be the same, but @Bordodynov is correct, you have to size the 120 winding by current first.
So if you need 1 A at 48 V or about 50 VA, your going to need a 120 VA transformer. 1 A * 48V on the primary side,
The primary is usually on the core, so there is better magnetic coupling. You could loose some regulation.
So, dropping 48 V to 24 V, you need to know power. Many control transformers are 50 VA, so I just picked it.
These https://toroid.com/Products/General-Isolation-Transformers are probably too expensive.
You also might e able to use another x:24 V transformer and add or subtract voltages directly as long as the phase is the same. I thought the OP/TS listed the 3 phase voltage available.
The primary and secondary of a transformer don't really matter a whole lot. The VA rating will be the same, but @Bordodynov is correct, you have to size the 120 winding by current first.
So if you need 1 A at 48 V or about 50 VA, your going to need a 120 VA transformer. 1 A * 48V on the primary side,
The primary is usually on the core, so there is better magnetic coupling. You could loose some regulation.
So, dropping 48 V to 24 V, you need to know power. Many control transformers are 50 VA, so I just picked it.
These https://toroid.com/Products/General-Isolation-Transformers are probably too expensive.
You also might e able to use another x:24 V transformer and add or subtract voltages directly as long as the phase is the same. I thought the OP/TS listed the 3 phase voltage available.
