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/ Ohio / Heavy Duty DC Power Supplies
Heavy-Duty
DC
Power Supplies
Lifting
Magnet and Industrial-Strength Power Supplies
 Ohio
Magnetics’ DC Power Supplies for lifting magnets are available in both
a fixed voltage output and a variable voltage output. Fixed Voltage
output DC power supplies (usually 230 VDC or 115 VDC) are used in most
general magnet applications. Variable Voltage supplies (usually 0-230
VDC or 0-280 VDC) are used in applications of fanning, boost/carry, flux
reduction, contant flux regulation and similar applications.
Voltage
outputs can be set via potentiometers for voltage limit-current
regulation or current-limit regulation.
Because
the cold current of the magnet is 30%-50% greater than the operating
current, the power supply must be sized for the cold rating of the
magnet at 25°C.
(Note:
Ohio also offers Low Voltage DC Power Supplies for
smaller magnets.)
Features
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120/240
V single phase AC input
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12-120
VDC variable output voltage
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NEMA 12 (IP-65)
enclosure natural convection
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North
American or international input voltages; 3-phase; 50 or 60 Hz
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480
V or 240 VAC input voltage; 3-phase; 60 Hz
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Magnetic
line starter with 3-phase overload relay protection
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Adjustable
taps on power transformers to match input line conditions
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Fast-acting
fuse protection for diode bridge
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Transient
surge protection
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DC
output fuses for short circuit protection
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AC
"power on" indicator light (neon)
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Wall-mounted
enclosures to 10 kW; floor-mounted enclosures above 10 kW
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110
/ 120 V (North America) or 220 / 240 V (international) control
voltage for input switching and operation of accessories
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120
VAC control for input power switching
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Input
and output power terminal blocks
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120
V or 115 VDC output voltage (115 VDC output only to 25 kW)
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Modular
diodes / SCRs for easy replacement
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Convection-
cooled up to 6.5 kW (230 V) or 4 kW (115 V); fan-cooled above 6.5 kW
(230 V) or 4 kW (115 V)
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Separate
230 V supply for controllers on all variable voltage supplies
Magnet
DC Power Supply Specifications
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Full Load Efficiency
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90%-96%
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Power Factor
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92%-95%
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Voltage Regulation
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6% or Less
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Full Wave Output Ripple
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4.6%
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Power Ratings
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100% continuous
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@ 60°C
Ambient
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125%, 2 hours
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For
pricing information, please supply:
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Input
Voltage and Frequency
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Input
Line Equipment Desired (see options)
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DC
Output Voltage
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Magnet
Cold Current Rating at 25°C
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Enclosure
IEC 529 Style
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Additional
Options
-
Quantity
(Note:
Service, parts replacement and re-building are available on existing
equipment. Call for cost-saving details!)
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DC
Power Supply Data for Fixed and Variable DC Power Supplies
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kW1
|
Amps
@ 230 V
|
Amps
@ 115 V
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Enclosure
Size
H*
x W x D
(in
/ mm)
|
Weight
/ Mass
(lb
/ kg)
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kW
@ 280 V
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|
2
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8.7
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16.6
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36
x 30 x 12
915
x 760 x 305
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238
110
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2.5
|
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4
|
17.2
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33.3
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36
x 30 x 12
915
x 760 x 305
|
265
120
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5.0
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|
6.5
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28.0
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54.2
|
36
x 30 x 12
915
x 760 x 305
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310
140
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8.0
|
|
10
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43.1
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83.3
|
36
x 30 x 12
915
x 760 x 305
|
355
160
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12.5
|
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15
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64.7
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125.0
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48
x 36 x 16
1220
x 915 x 405
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545
250
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18.5
|
|
20
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86.2
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166.6
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48
x 36 x 16
1220
x 915 x 405
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595
270
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25.0
|
|
25
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109.0
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208.0
|
48
x 36 x 16
1220
x 915 x 405
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640
290
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30.5
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|
35
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151.0
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Inquire
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60
x 36 x 20
1525
x 915 x 510
|
800
360
|
43.0
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|
45
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194.0
|
Inquire
|
60
x 36 x 20
1525
x 915 x 510
|
875
400
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55.0
|
|
55
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237.0
|
Inquire
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60
x 36 x 20
1525
x 915 x 510
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950
430
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67.5
|
|
65
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283.0
|
Inquire
|
60
x 48 x 24
1525
x 1220 x 610
|
1060
480
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80.0
|
|
75
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326.0
|
Inquire
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60
x 48 x 24
1525
x 1220 x 610
|
1100
500
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85.5
|
|
87.5
|
380.0
|
Inquire
|
60
x 48 x 24
1525
x 1220 x 610
|
1145
520
|
91.0
|
|
100
|
435.0
|
Inquire
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60
x 48 x 24
1525
x 1220 x 610
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1255
570
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122.0
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*:
Add 12 in. (305 mm) to height for leg kit on floor-mounted models.
1:
On 0-280 V variable voltage output models, power output in kW is based
on power delivered to load when voltage is set to 230 VDC.
Top
Optional
Features
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IP32,
IP65, IP66 enclosures natural* convection
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Latch
lock on enclosures (where possible)
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3-wire
pushbutton “on/off” control or 2-wire selector switch type
“on/off” control, both available as local or remote package
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Circuit
breaker disconnect (local or remote)
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Variable
voltage:
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0-230 V system for flux reduction, fanning,
current/voltage regulation applications
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280 V systems for boost/carry,
current/voltage regulation applications
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Power
relay for operation of controller lift/drop coil from 110/220 V (North
America) or 220/240 V (international) via pendant control
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Special
requests available – please contact the factory
(*):
NEMA
1 = IP23
NEMA
3R = IP32
NEMA 12
= IP65
NEMA
4 = IP66
NEMA
4X = IP66
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To
get a customized solution for your specific application, contact the
factory, or talk with the Ohio rep / dealer
nearest you.
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