Spec Tech Industrial

Ohio Magnetics Heavy-Duty DC Power Suppies

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Ohio Magnetics

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

  • 120/240 V single phase AC input

  • 12-120 VDC variable output voltage

  • NEMA 12 (IP-65) enclosure natural convection

  • North American or international input voltages; 3-phase; 50 or 60 Hz

  • 480 V or 240 VAC input voltage; 3-phase; 60 Hz

  • Magnetic line starter with 3-phase overload relay protection

  • Adjustable taps on power transformers to match input line conditions

  • Fast-acting fuse protection for diode bridge

  • Transient surge protection

  • DC output fuses for short circuit protection

  • AC "power on" indicator light (neon)

  • Wall-mounted enclosures to 10 kW; floor-mounted enclosures above 10 kW

  • 110 / 120 V (North America) or 220 / 240 V (international) control voltage for input switching and operation of accessories

  • 120 VAC control for input power switching

  • Input and output power terminal blocks

  • 120 V or 115 VDC output voltage (115 VDC output only to 25 kW)

  • Modular diodes / SCRs for easy replacement

  • 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)

  • Separate 230 V supply for controllers on all variable voltage supplies

Magnet DC Power Supply Specifications

Full Load Efficiency

90%-96%

Power Factor

92%-95%

Voltage Regulation

6% or Less

Full Wave Output Ripple

4.6%

Power Ratings

100% continuous

@ 60°C Ambient

125%, 2 hours

For pricing information, please supply:

  • Input Voltage and Frequency

  • Input Line Equipment Desired (see options)

  • DC Output Voltage

  • Magnet Cold Current Rating at 25°C

  • Enclosure IEC 529 Style

  • Additional Options

  • Quantity

(Note: Service, parts replacement and re-building are available on existing equipment. Call for cost-saving details!)

DC Power Supply Data for Fixed and Variable DC Power Supplies

kW1

Amps

@ 230 V

Amps

@ 115 V

Enclosure Size

H* x W x D

(in / mm)

Weight / Mass

(lb / kg)

kW @ 280 V

2

8.7

16.6

36 x 30 x 12

915 x 760 x 305

238

110

2.5

4

17.2

33.3

36 x 30 x 12

915 x 760 x 305

265

120

5.0

6.5

28.0

54.2

36 x 30 x 12

915 x 760 x 305

310

140

8.0

10

43.1

83.3

36 x 30 x 12

915 x 760 x 305

355

160

12.5

15

64.7

125.0

48 x 36 x 16

1220 x 915 x 405

545

250

18.5

20

86.2

166.6

48 x 36 x 16

1220 x 915 x 405

595

270

25.0

25

109.0

208.0

48 x 36 x 16

1220 x 915 x 405

640

290

30.5

35

151.0

Inquire

60 x 36 x 20

1525 x 915 x 510

800

360

43.0

45

194.0

Inquire

60 x 36 x 20

1525 x 915 x 510

875

400

55.0

55

237.0

Inquire

60 x 36 x 20

1525 x 915 x 510

950

430

67.5

65

283.0

Inquire

60 x 48 x 24

1525 x 1220 x 610

1060

480

80.0

75

326.0

Inquire

60 x 48 x 24

1525 x 1220 x 610

1100

500

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

60 x 48 x 24

1525 x 1220 x 610

1255

570

122.0

*: 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.

Optional Features

  • IP32, IP65, IP66 enclosures natural* convection

  • Latch lock on enclosures (where possible)

  • 3-wire pushbutton “on/off” control or 2-wire selector switch type “on/off” control, both available as local or remote package

  • Circuit breaker disconnect (local or remote)

  • Variable voltage:

    • 0-230 V system for flux reduction, fanning, current/voltage regulation applications

    • 280 V systems for boost/carry, current/voltage regulation applications

  • Power relay for operation of controller lift/drop coil from 110/220 V (North America) or 220/240 V (international) via pendant control

  • Special requests available – please contact the factory

(*):

NEMA 1 = IP23

NEMA 3R = IP32

NEMA 12 = IP65

NEMA 4 = IP66

NEMA 4X = IP66

203 Vest Avenue
Valley Park, MO 63088
Toll Free: (888) SPECTECH
Phone: (636) 537-0202
Fax: (636) 537-1405
E:mail: sales@spectechind.com