Insulation & Temperature All Pioneer/Bemag transformers are designed and manufactured with the best quality insulation available. There are classes of insulation systems for different temperatures as defined by NEMA and ANSI. Insulation classes are rated in °C rise above a specific ambient of 40°C maximum. A transformer having a specific class of insulation, for example Class 220, can have an average winding temperature rise of 150°C with a maximum hot spot temperature rise of 180°C. If the room ambient temperature is 40°C, then the total temperature of the hottest spot would be 220°C. Pioneer transformers are designed to operate at rated load and voltage in maximum room ambient temperatures of 40°C, average room ambient temperature not to exceed 30°C, and at altitudes not to exceed 3300 feet in accordance with NEMA standards. Insulating Classifications The designations for insulation systems are numerical classifications based on temperature ratings. Transformer ratings are based on temperature rise. The accompanying table shows the designations. Class 105 55°C Rise 40°C 10°C Class 150 80°C Rise 40°C 30°C Class 180 110°C Rise 40°C 30°C Class 220 150°C Rise 40°C 30°C Products Ventilated Transformers Encapsulated Transformers Industrial Control Transformers Medium Voltage Transformers Custom Solutions Contact Us 80°C and 115°C Temperature Rise Designed to supply a lower temperature rise (operating temperature) in order to give a safety factor on the transformer. This type of transformer is designed oversize. General application and required where low heat dissipation from the transformer is needed. Advantages Improve life expectancies Cost saving on losses Decreases watts dissipated Substantial increase in overload capacity (20% at 115°C and 35% at 80°C rise) High safety factor without increasing cable sizing and protection Return to main Products page Contact Us Tel: 800-892-3755 Email Customer Service Request a quote Find a representative Parent Company Pioneer Dry Type Transformer Group Jefferson Electric Navigation Home About Us News Literature Request a quote Products Ventilated Transformers Encapsulated Transformers Industrial Control Transformers Medium Voltage Transformers Product Specifier (Jefferson Electric link) ©2020 Pioneer Dry Type Transformers Group Optimizer WordPress Theme ENFR

News Under construction Contact Us Tel: 800-892-3755 Email Customer Service Request a quote Find a representative Parent Company Pioneer Dry Type Transformer Group Jefferson Electric Navigation Home About Us News Literature Request a quote Products Ventilated Transformers Encapsulated Transformers Industrial Control Transformers Medium Voltage Transformers Product Specifier (Jefferson Electric link) ©2020 Pioneer Dry Type Transformers Group Optimizer WordPress Theme ENFR