Autotransformer


The auto-transformers are frequently used like an economic alternative to the distribution transformers. It allows the adjustment of the output voltage for specific charges like the heating or drive forces for industrial machines. The primary and the secondary of an auto-transformer are on same winding, instead of being on two separate windings like an isolation transformer. However this alternative cannot be employed on certain feeding systems: when the neutral on the secondary must be used or grounded and when the neutral of the primary winding is not available.

Features :
- Taps: 1-5% FCAN, 1-5% FCBN.
- Three coils design, neutral available.
- Low initial cost.
- Small compact size.
- May be used as step-up or step-down.
- Low regulation : less than 3%.
- Available in copper.
- Option: Primary 600, 480, 460, 440 Volts
Secondary 600, 240, 230, 220, 208 Volts


Different size connectors available on request.

Connectors Type
Technical Drawing



Connectors Type

Primary : 600V, Secondary 480V 
KVA Code High Voltage Low Voltage
30 BC2030S480 1 x 2-14 1 x 2-14
45 BC2045S480 1 x 2-14 1 x 2-14
75 BC2075S480 1 x 2 / 0-6 1 x 2 / 0-6
112.5 BC2112S480 1 x 2 / 0-6 1 x 2 / 0-6
150 BC2150S480 1 x 250 MCM 1 x 250 MCM
225 BC2225S480 1 x 350 MCM 1 x 500 MCM
300 BC2300S480 1 x 500 MCM 1 x 350 MCM
400 BC2400S480 1 x 350 MCM 1 x 350 MCM
500 BC2500S480 1 x 350 MCM 1 x 500 MCM
600 BC2600S480 1 x 500 MCM 1 x 500 MCM
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Primary : 600V, Secondary : 380V 
KVA Code High Voltage Low Voltage
20 BC2020S380 1 x 2-14 1 x 2-14
30 BC2030S380 1 x 2-14 1 x 2-14
45 BC2045S380 1 x 2-14 1 x 2 / 0-6
75 BC2075S380 1 x 2 / 0-6 1 x 2 / 0-6
112.5 BC2112S380 1 x 2 / 0-6 1 x 250 MCM
150 BC2150S380 1 x 250 MCM 1 x 350 MCM
225 BC2225S380 1 x 350 MCM 1 x 600 MCM
300 BC2300S380 1 x 500 MCM 2 x 350 MCM
400 BC2400S380 2 x 350 MCM 2 x 500 MCM
500 BC2500S380 2 x 350 MCM 3 x 500 MCM
600 BC2600S380 2 x 500 MCM 3 x 500 MCM


Primary : 600V, Secondary : 240V 
KVA Code High Voltage Low Voltage
10 BC2010S240 1 x 2-14 1 x 2-14
15 BC2015S240 1 x 2-14 1 x 2-14
20 BC2020S240 1 x 2-14 1 x 2-14
30 BC2030S240 1 x 2-14 1 x 2 / 0-6
45 BC2045S240 1 x 2-14 1 x 2 / 0-6
75 BC2075S240 1 x 2 / 0-6 1 x 250 MCM
112.5 BC2112S240 1 x 2 / 0-6 1 x 500 MCM
150 BC2150S240 1 x 250 MCM 2 x 350 MCM
225 BC2225S240 1 x 350 MCM 2 x 500 MCM
300 BC2300S240 1 x 500 MCM 3 x 500 MCM
400 BC2400S240 2 x 350 MCM 3 x 600 MCM
500 BC2500S240 2 x 350 MCM 4 x 500 MCM
600 BC2600S240 2 x 500 MCM 5 x 600 MCM

Technical Drawing

 Auto Transformer : 3 Phases
  Primary: 600 Volts
Secondary : 480 Volts 		Primary: 600 Volts
Secondary : 380 Volts 		Primary: 600 Volts
Secondary : 240 Volts
KVA Cuivre (BC) Cuivre (BC) Cuivre (BC)
10     BC2010S240
15     BC2015S240
20   BC2020S380  
30 BC2030S480 BC2030S380 BC2030S240
45 BC2045S480 BC2045S380 BC2045S240
75 BC2075S480 BC2075S380 BC2075S240
112.5 BC2112S480 BC2112S380 BC2112S240
150 BC2150S480 BC2150S380 BC2150S240
225 BC2225S480 BC2225S380 BC2225S240
300 BC2300S480 BC2300S380 BC2300S240
400 BC2400S480 BC2400S380  
500 BC2500S480    
600 BC2600S480    




 
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