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Open Transition Transfer Pair
The OTTP operates as a standard transfer switch utilizing two circuit breakers to perform the transfer function.
The OTTP is ideal for standby application where a single generator provides automatic emergency backup power. The significant advantage of using the OTTP in place of conventional ATS is that the OTTP performs the ATS function as well as the overcurrent protection all within the same equipment. With traditional ATS you require additional circuit breakers to protect the ATS.
The OTTP is available in the following sizes and enclosures:
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Voltage |
Ampere |
Enclosure |
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Up to 600V** |
400A - 5000A |
NEMA 1 & 3R |
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|
5kV & 15kV |
50A – 1200A |
NEMA 1 & 3R |
**Note: The low voltage OTTP is available with mechanical and electrical interlocks.
Typical Oneline and Elevation Diagrams:
Typical for Low Voltage Application