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Buck Boost Transformer Installation
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Three Phase Buck Boost Transformers
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Low Voltage Applications
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AC Line Reactors
Adjust, block or otherwise handle
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Federal Pacific Buck Boost Transformers
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Acme Buck Boost Transformers
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Hammond Buck Boost Transformers
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Jefferson Buck Boost
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In business over 93 years; supplying a
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Buck Boost Transformers
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Buck Boost
Transformer Installation
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Three Phase Buck Boost Transformers
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Low Voltage
Applications
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AC Line Reactors
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Acme Buck Boost Transformers
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Hammond Buck Boost Transformers
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Boost Transformers
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Other Popular Voltage Transformers
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TEMCo Buck Boost
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RESOURCE LINKS, TYPES & DESCRIPTIONS
Buck
Boost Transformers
were developed to supply voltages for two main categories; the first of
which is
when
the local power is consistently not high or low enough to correctly and
safely run the equipment at its rated power load.
For loads demanding slightly
higher voltages than available a Buck Boost Transformer can be
designed such that the majority of the line load is passed directly through
to the power source while only that amount of kVA needed to adjust to
corrected specifications is actually added. This allows much smaller Buck
Boost Transformers to service a significantly greater supply to a load
than the kVA that is indicated on the transformer nameplate.
Common examples of this
application of Buck Boost Transformers would be where motors and HVAC
equipment is operating on a line supplying 110V or 230V when the equipment
demands 120V or 240V service. A Buck Boost Transformer is designed to
lower (buck) or raise (boost) line voltage in a range of 5% to 20%.
Buck Boost Transformers
are
also used when significantly lower voltages are needed, as in low voltage
lighting and landscape lighting.
Primary voltages running from
110V to 440V are lowered to secondary voltages as low as 12 volts, but can
also be 16, 24, 32 or 48 volts and can be configured by custom design to fit
other voltages.
Buck-Boost Transformer Selection
Chart 120 x 240 Volts Primary–12/24 Volts Secondary |
|
Output for lower voltage can be found by: |
Rated Output Voltage
Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. |
|
Output KVA available at reduced voltage can be found by: |
Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. |
|
Buck-Boost Transformer Selection
Chart 120 x 240 Volts Primary–12/24 Volts Secondary |
|
Output for lower voltage can be found by: |
Rated Output Voltage
Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. |
|
Output KVA available at reduced voltage can be found by: |
Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. |
|
Buck-Boost Transformer Selection
Chart 120 x 240 Volts Primary–16/32 Volts Secondary |
|
Output for lower voltage can be found by: |
Rated Output Voltage
Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. |
|
Output KVA available at reduced voltage can be found by: |
Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. |
|
Buck-Boost Transformer Selection
Chart 120 x 240 Volts Primary–16/32 Volts Secondary |
|
Output for lower voltage can be found by: |
Rated Output Voltage
Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. |
|
Output KVA available at reduced voltage can be found by: |
Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. |
|
Buck-Boost Transformer Selection
Chart 240 x 480 Volts Primary–24/48 Volts Secondary |
|
Output for lower voltage can be found by: |
Rated Output Voltage
Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. |
|
Output KVA available at reduced voltage can be found by: |
Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. |
|
Buck-Boost Transformer Selection
Chart 240 x 480 Volts Primary–24/48 Volts Secondary |
Three Phase |
BOOSTING |
BUCKING |
Line Voltage (Available) |
399Y 230 |
380 |
430 |
440 |
460 |
460 |
480 |
480 |
440 |
440 |
460 |
460 |
460 |
480 |
500 |
500 |
Load Voltage (Available) |
480Y 277 |
418 |
473 |
462 |
506 |
483 |
528 |
504 |
400 |
419 |
438 |
418 |
457 |
436 |
455 |
476 |
Click part # for info |
Conn. Diag. |
E |
G |
G |
H |
G |
H |
G |
H |
G |
H |
H |
G |
H |
G |
G |
H |
Federal SB24N.050F
Acme T-1-81061
Hammond QC05DTCB |
KVA Amps |
0.86 1.04 |
0.75 1.04 |
0.85 1.04 |
1.67 2.08 |
0.91 1.04 |
1.74 2.08 |
0.95 1.04 |
1.82 2.08 |
0.79 1.15 |
1.59 2.19 |
1.66 2.19 |
0.83 1.15 |
1.73 2.19 |
0.87 1.15 |
0.90 1.15 |
1.80 2.19 |
Federal SB24N.100F
Acme T-1-81062
Hammond QC10DTCB |
KVA Amps |
1.73 2.08 |
1.51 2.08 |
1.71 2.08 |
3.33 4.17 |
1.83 2.08 |
3.49 4.17 |
1.91 2.08 |
3.64 4.17 |
1.59 2.29 |
3.18 4.38 |
3.32 4.38 |
1.66 2.29 |
3.46 4.38 |
1.73 2.29 |
1.80 2.29 |
3.61 4.38 |
Federal SB24N.150F
Acme T-1-81063
Hammond QC15DTCB |
KVA Amps |
2.59 3.13 |
2.26 3.13 |
2.56 3.13 |
5.00 6.25 |
2.74 3.13 |
5.23 6.25 |
2.86 3.13 |
5.46 6.25 |
2.38 3.44 |
4.76 6.56 |
4.98 6.56 |
2.49 3.44 |
5.20 6.56 |
2.60 3.44 |
2.71 3.44 |
5.41 6.56 |
Federal SB24N.250F
Acme T-1-81064
Hammond QC25DTCB |
KVA Amps |
4.32 5.21 |
3.77 5.21 |
4.27 5.21 |
8.34 10.42 |
4.56 5.21 |
8.71 10.42 |
4.76 5.21 |
9.09 10.42 |
3.97 5.73 |
7.94 10.94 |
8.30 10.94 |
4.15 5.73 |
8.66 10.94 |
4.33 5.73 |
4.51 5.73 |
9.02 10.94 |
Federal SB24N.500F
Acme T-1-81065
Hammond QC50DTCB |
KVA Amps |
8.64 10.42 |
7.54 10.42 |
8.53 10.42 |
16.67 20.83 |
9.13 10.42 |
17.43 20.83 |
9.53 10.42 |
18.19 20.83 |
7.94 11.46 |
15.88 21.88 |
16.60 21.88 |
8.30 11.46 |
17.32 21.88 |
8.66 11.46 |
9.02 11.46 |
18.04 21.88 |
Federal SB24N.750F
Acme T-1-81066
Hammond QC75DTCB |
KVA Amps |
12.96 15.62 |
11.31 15.63 |
12.80 15.63 |
25.01 31.25 |
13.69 15.63 |
26.14 31.25 |
14.29 15.63 |
27.28 31.25 |
11.91 17.19 |
23.82 32.81 |
24.90 32.81 |
12.45 17.19 |
25.98 32.81 |
12.99 17.19 |
13.53 17.19 |
27.06 32.81 |
Federal SB24N1F
Acme T-1-37920
Hammond Q1C0DTCB |
KVA Amps |
17.28 20.83 |
15.08 20.83 |
17.07 20.83 |
33.34 41.67 |
18.26 20.83 |
34.86 41.67 |
19.05 20.83 |
36.37 41.67 |
15.88 22.92 |
31.75 43.75 |
33.20 43.75 |
16.60 22.92 |
34.64 43.75 |
17.32 22.92 |
18.04 22.92 |
36.08 43.75 |
Federal SB24N1.5F
Acme T-1-37921
Hammond Q1C5DTCF |
KVA Amps |
25.92 31.25 |
22.62 31.25 |
25.60 31.25 |
50.01 62.50 |
27.39 31.25 |
52.29 62.50 |
28.58 31.25 |
54.66 62.50 |
23.82 34.38 |
47.63 65.63 |
49.80 65.63 |
24.90 34.38 |
51.96 65.63 |
25.98 34.37 |
27.06 34.37 |
54.13 65.63 |
Federal SB24N2F
Acme T-1-37922
Hammond Q002DTCF |
KVA Amps |
34.55 41.67 |
30.17 41.67 |
34.14 41.67 |
66.68 83.33 |
36.52 41.67 |
69.72 83.33 |
38.11 41.67 |
72.75 83.33 |
31.75 45.83 |
63.51 87.50 |
66.40 87.50 |
33.20 45.83 |
69.28 87.50 |
34.64 45.83 |
36.08 45.83 |
72.17 87.50 |
Federal SB24N3F
Acme T-1-37923
Hammond Q003DTCF |
KVA Amps |
51.83 62.50 |
45.25 62.50 |
51.20 62.50 |
100.03 125.00 |
54.78 62.50 |
104.57 125.00 |
57.16 62.50 |
109.12 125.00 |
47.63 68.75 |
95.26 131.25 |
99.59 131.25 |
49.80 68.75 |
103.92 131.25 |
51.96 68.75 |
54.13 68.75 |
108.25 131.25 |
Federal SB24N5F
Acme T-1-37924
Hammond Q005DTCF |
KVA Amps |
86.39 104.17 |
75.42 104.17 |
85.34 104.17 |
166.71 208.33 |
91.29 104.17 |
174.29 208.33 |
95.26 104.17 |
181.87 208.33 |
79.39 114.58 |
158.77 218.75 |
165.99 218.75 |
82.99 114.58 |
173.21 218.75 |
86.60 114.58 |
90.21 114.58 |
180.42 218.75 |
No. of Transformers |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
Catalog Number |
Conn. Diag. |
E |
G |
G |
H |
G |
H |
G |
H |
G |
H |
H |
G |
H |
G |
G |
H |
|
Output for lower voltage can be found by: |
Rated Output Voltage
Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. |
|
Output KVA available at reduced voltage can be found by: |
Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. |
|
Cons:
Buck Boost Transformers provide no
circuit isolation under most common uses, the KVA and voltages do not match those on the nameplate,
and they cannot create a neutral.
Pros:
They are inexpensive, smaller and lighter,
more efficient, and can be used in a variety of applications. They are also
often wired with at least 4 windings. This makes them more versatile because
they can be wired eight different ways and provide a number of KVA and
voltage choices.
Important!!!
Buck Boost Transformers
do not adjust for variable
voltage conditions but only handle chronically
existing high or low situations. You will probably need to install an
AC Line Reactor
to address that problem.
Warning!!!
Significant damage can be incurred if some equipment and applications
are run at voltages higher or lower than their rated load. Buck Boost
Transformers will prevent this!
Contact
TEMCo for your Buck Boost Transformer
needs. TEMCo carries most major brands and offers competitive pricing with
quick delivery.
Custom-made products are also available.
Contractors
and individuals who need portable power sources and lighting may also want
to check out the Diesel
Generators available through TEMCo.
Call (510)
490-2187
(US & International)
or 1-800-613-2290 (US only)
for prices and information.
Wholesale Pricing Available!
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this site:
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