| NEMA TP-1 Energy-Efficient Transformers |
|
|
|
NEMA TP-1 Energy-Efficient Transformers
Types DS-3, DT-3
- Ventilated, NEMA 2 enclosure standard
- Suitable for indoor applications, outdoors when weathershields are also installed
- Upright mounting only
- 220ºC insulation system
- 150ºC rise standard; 115°C or 80°C rise optional
- Available in single-phase ratings 15–167 kVA, 600 volts primary (DS-3)
- Available in three-phase ratings 15–1500 kVA and up to 600 volts primary (DT-3)
Application Description
NEMA TP-1-2002 compliant energy-efficient transformers are specifically designed to meet the energy efficiency standards set forth in NEMA Standards publication, TP-1- 2002, “Guide for Determining Energy Efficiency for Distribution Transformers.” Surveys have shown that the average loading of low voltage dry-type distribution transformers, over a 24-hour period, is approximately 35%. NEMA TP-1 compliant transformers are optimized to offer maximum efficiency at 35% of nameplate rating.
Features, Benefits and Functions
- 60 Hz operation (except as noted)
- Short-term overload capability as required by ANSI
- Meet NEMA ST-20 sound levels
- Meet federal energy efficiency requirements for low voltage dry-type distribution transformers effective as of January 1, 2007
|
|
|
