| Application
Auto-Transformer defined:
A transformer which has only one winding per phase, part of which
is common to both primary and secondary circuits. Using an Auto-Transformer
is an economical and compact means of connecting electrical equipment
to a power supply or a different voltage. Part of the winding is
common to both primary and secondary circuits so there is no isolation
between the two. This may be acceptable on some power systems that
do not have a grounded neutral on the secondary side of the main
power transformer. Typical applications include motor loads of industrial
machinery, electric heating, air conditioners, etc.
- Performs the same function as an isolation transformer
of same KVA and voltage rating without the isolation feature
- Ventilated openings in the enclosure are coordinated
with the cooling ducts in the coils to ensure proper natural circulation
of air for long life and minimum losses.
- General purpose indoor ventilated steel enclosure
(Nema-1 or CSA-1) suitable for dry locations. After fabrication,
the enclosure is finished in ASA61 grey powder paint suitable
for most industrial and commercial installations.
- Transformers up to size #7 enclosure may be
readily hung on H-columns, walls, shelves or floor mounted to
suite each typical installation. Most units have lifting lugs,
conduit knockouts and removable front and back covers for easy
access to terminals. Transformers in size #8 enclosure and above
are supplied with brackets suitable for floor or platform mounting
only.
- Transformer terminations rated below 330A are
supplied with suitable hardware and lugs for cable connection.
Terminations above 330A are supplied with termination pads.
- Generally quieter than the equivalent isolation
transformer
- May be used in either step-up or step-down configuration
- Low regulation (typically less than 3%)
- Class 220 Insulation
- CSA certified, File No. LR34493
- UL Listed, File No. E108255
- ISO9001 Quality Certification
- Available in Copper Windings
Common
Part Numbers & Typical Information
Some enclosure dimensions
may have changed. Click
here for more info
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600/480 Volts
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600/240 Volts
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240/208 Volts
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Typical Sizes
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Part Numbers
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Enclosure Size
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Approx. Weight
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Part Numbers
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Enclosure Size
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Approx. Weight
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Part Numbers
|
Enclosure Size
|
Approx. Weight
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3KVA
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RC3JH
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#0
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21LBS
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RC3JC
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#1
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40LBS
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RC3CB
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#0
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18LBS
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6KVA
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RC6JH
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#1
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34LBS
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RC6JC
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#1
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75LBS
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RC6CB
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#0
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21LBS
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9KVA
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RC9JH
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#1
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45LBS
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RC9JC
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#3
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120LBS
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RC9CB
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#1
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30LBS
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15KVA
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RC15JH
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#1
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65LBS
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RC15JC
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#3
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155LBS
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RC15CB
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#1
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52LBS
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30KVA
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RC30JH
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#3
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115LBS
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RC30JC
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#5
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225LBS
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RC30CB
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#3
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70LBS
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45KVA
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RC45JH
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#3
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135LBS
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RC45JC
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#6
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265LBS
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RC45CB
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#3
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125LBS
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75KVA
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RC75JH
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#5
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200LBS
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RC75JC
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#6
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400LBS
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RC75CB
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#5
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135LBS
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112.5 KVA
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RC112JH
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#6
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225LBS
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RC112JC
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#7
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550LBS
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RC112CB
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#5
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180LBS
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150KVA
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RC150JH
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#6
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265KBS
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RC150JC
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#7
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610LBS
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RC150CB
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#6
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200LBS
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225KVA
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RC225JH
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#7
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450LBS
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RC225JC
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#8
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970LBS
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RC225CB
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#6
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240LBS
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300KVA
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RC300JH
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#7
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525LBS
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RC300JC
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#9
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1300LBS
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RC300CB
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#7
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300LBS
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600/208 Volts
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480/240 Volts
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480/208 Volts
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Typical Sizes
|
Part Numbers
|
Enclosure
Size
|
Approx. Weight
|
|
Part Numbers
|
Enclosure
Size
|
Approx. Weight
|
|
Part Numbers
|
Enclosure
Size
|
Approx. Weight
|
|
3KVA
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RC3JB
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#1
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45LBS
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RC3HC
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#1
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65LBS
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RC3HB
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#1
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65LBS
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6KVA
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RC6JB
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#1
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70LBS
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RC6HC
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#1
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85LBS
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RC6HB
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#1
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85LBS
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9KVA
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RC9JB
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#3
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130LBS
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RC9HC
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#3
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110LBS
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RC9HB
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#3
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110LBS
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15KVA
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RC15JB
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#3
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130LBS
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RC15HC
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#3
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125LBS
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RC15HB
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#3
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130LBS
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30KVA
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RC30JB
|
#5
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210LBS
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RC30HC
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#5
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200LBS
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RC30HB
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#5
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200LBS
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45KVA
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RC45JB
|
#6
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250LBS
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RC45HC
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#5
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225LBS
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RC45HB
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#5
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225LBS
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75KVA
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RC75JB
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#6
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360LBS
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RC75HC
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#6
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325LBS
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RC75HB
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#6
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325LBS
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112.5 KVA
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RC112JB
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#7
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555LBS
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RC112HC
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#7
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450LBS
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RC112HB
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#7
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450LBS
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150KVA
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RC150JB
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#8
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650KBS
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RC150HC
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#7
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550LBS
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RC150HB
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#7
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550LBS
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225KVA
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RC225JB
|
#8
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920LBS
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RC225HC
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#8
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675LBS
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RC225HB
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#8
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675LBS
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300KVA
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RC300JB
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#9
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1330LBS
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RC300HC
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#8
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900LBS
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RC300HB
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#8
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900LBS
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Available Options
Include:
- Temperature Rise (115oc, 80oc)
- Other Primary or Secondary Voltages
- Different frequency (other than 60Hz)
- Different Nema Rated Enclosure (2, 3R, 4, 4X,
12, etc)
- Custom sizes (specific KVA ratings)
- Open type (Core & Coils only)
- Neutral brought out to a terminal
- Special Paint/Finish
* Information subject to
change without prior notice |
