Are your transformers used in residential applications?
Are there additional standards required for residential applications (building codes, etc.)?
- We meet the general NEC requirements as far as residential applications, but there could be specific local code requirements.
What is the general life expectancy of your transformers under normal use?
- 20-40 years for typical use.
What type of terminations are provided on Jefferson Electric transformers?
- Jefferson Electric dry type transformers are provided with the following primary and secondary terminations:
- Encapsulated wire leads
- Ventilated terminals
- Machine Tool Terminals
- Control leads
- Others to order
Can transformers be operated at different frequencies?
- A 60 Hz design is physically smaller than a 50 Hz design. DO NOT use 60 Hz rated transformers on 50 Hz service. Without special designs, higher losses and greater heat rise will result. Operating 60 Hz transformers at higher frequencies may simply provide less voltage regulation.
What would be the result of overloading dry type transformers?
- All Jefferson Electric transformers are designed to accommodate short periods of overloading. As the overload becomes excessive and the duration increases, the transformer will experience a percent loss of life. Prolonged overloading generates excessive heating which results in insulation deterioration and ultimately transformer failure. Contact your Jefferson Electric application engineer to determine loading for your unique application.
Can I achieve specific sound levels in a transformer?
- Whenever noise is a concern, but before selecting a transformer, assure yourself that the sound levels represented have been measured in accordance with the NEMA standards. If your requirement is lower than that available from the manufacturer’s standard product, request a specific sound level on your RFQ or bid. (See Transformer Sound.)