Issue:
Procedure for selection of SquareD/Schneider Electric Buck and Boost Transformers
Product Line:
Product Line:
LV Transformers
Environment:
Applies to all SquareD/Schneider Electric Buck and Boost Transformers
Cause:
Cause:
Requirement to change a source voltage to a higher or lower load voltage
Resolution:
Resolution:
Use Buck & Boost catalog 7414CT0001, Buck & Boost `slide rule` 7414SP9901, or:
1. If load is single phase:
A. Multiply 24 volts times the load amperage needed to obtain VA of Buck & Boost Transformer
B. Choose a `SV43` transformer of next larger standard size above the VA obtained in A.
Example: If load is 11 amperes, multiply 11 x 24V = 264VA, choose catalog number 500SV43B
C. Connect using wiring diagram #4 in Buck & Boost literature
2. If load is three phase 3-wire:
A. Use same procedure as in single phase except two transformers must be used.
Example: If load is 27 amperes, multiply 27 x 24V = 648VA, choose (2) catalog number 750SV43F
B. Connect using wiring diagram #6 in Buck & Boost literature
3. If load is three phase 4-wire:
A. Multiply 12 volts times the load amperage needed to obtain VA of Buck & Boost Transformer
B. Choose three `SV43` transformers, each of next larger standard size above the VA obtained in A.
Example: if load is 11 amperes, multiply 11 x 12 = 132VA, choose (3) catalog number 150SV43A
C. Connect using wiring diagram #7 in Buck & Boost literature Warning: Three phase 4-wire loading requires a 3-phase 4-wire primary source for wiring diagram #7. Attempts to create a neutral with Buck & Boost Transformer connections can result in damage to load equipment!
Released for: Schneider Electric USA
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales inquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Center
Find support resources for all your needs, in one place.
