Transformer
- Thread starter pedro1200
- Start date
winnie
Senior Member
- Location
- Springfield, MA, USA
- Occupation
- Electric motor research
You generally don't bring a neutral to the primary wye of a wye:delta transformer. These are often delta:wye transformers used in reverse. The transformer in a wye:delta transformer derives a low impedance neutral that will try to 'fight' the system supply neutral.
You generally must bring a neutral to the primary wye of a wye:wye transformer. These are rare.
Sometimes a utility might require a neutral brought to the primary of a transformer for 'effective grounding'. In this case the utility is taking advantage of the derived low impedance neutral.
You generally must bring a neutral to the primary wye of a wye:wye transformer. These are rare.
Sometimes a utility might require a neutral brought to the primary of a transformer for 'effective grounding'. In this case the utility is taking advantage of the derived low impedance neutral.
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
Technically no neutral on a Delta, unless it has a center tapped winding, like for a 240/120 3 phase 4 wire service, which is always referring to the secondary.