Eng-Tips is the largest engineering community on the Internet
Intelligent Work Forums for Engineering Professionals
-
Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Grounded open delta PTs
- Thread starter ivana24
- Start date
- Thread starter
- #3
Almost all voltage related functions, except for directional elements and functions relying on neutral voltage displacement.
Read the thread linked above.
Rafiq Bulsara
Read the thread linked above.
Rafiq Bulsara
The term "open delta" is used for two very different VT configurations. In the US, it SHOULD mean two voltage transformers connected in delta fashion, but with one phase missing or "open".
However, I have seen the term "open delta" used in this forum by European and UK members to mean three voltage transformers connect in delta but with one corner of the delta left unconnected and used for measurement (typically) of zero sequence voltage. In the US, this configuration is referred to as "broken delta".
As with any other voltage transformer configuration, grounding is done for safety and to establish a ground reference point.
David Castor
However, I have seen the term "open delta" used in this forum by European and UK members to mean three voltage transformers connect in delta but with one corner of the delta left unconnected and used for measurement (typically) of zero sequence voltage. In the US, this configuration is referred to as "broken delta".
As with any other voltage transformer configuration, grounding is done for safety and to establish a ground reference point.
David Castor
- Status
Similar threads
- Locked
- Question
- Locked
- Question
- Question
- Locked
- Question