Hubbell 4320 User Manual

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Hubbell Industrial Controls, Inc

4320

Lifting Magnet Power Supplies

Specifications 4320 * January 2000

Replaces February 1994

General

Hubbell offers the Type 4320 diode rectifier, specifically designed and rated for the demanding requirements where short circuits on the DC output bus are common or probably. The unit is ideally suited for applications such as scrap lifting magnets or cranes.

Addressing the common problem of blown semiconductor fuses resulting from cut magnet cables, shorted magnets, or crane rail faults. The 4320 offers a rectifier system that eliminates all fusing in the rectifier. Traditional rectifier design incorporates the use of silver and, fast acting, current limiting, semi-conductorfuses to protect rectifier diodes in the event of a DC fault. The 4320 rectifier design eliminates the need for these fuses.

The 4320 rectifier design will trip the unit’s AC input breaker in the event of a DC output bus fault. After the fault is cleared, the user simply resets the unit’s AC breaker and the unit is operational.

Cost Savings:

No blown fuses to replace

No spare fuses to inventory

Downtime associated with changing power semi-conductorfuses is eliminated

Standard Features of the Type

4320 Rectifier:

AC input voltage: 460V, 3Ph, 60Hz.

Nominal DC output: 240VDC

AC molded case circuit breaker

Dry Type isolation transformer: Transformer has one 5% tap above and below nominal input voltage

DC bleed resistor

Full wave, six pulse, diode rectifier assembly; mounted on oversize extruded aluminum head sinks

Diode peak inverse voltage to be six times the bridge AC RMS voltage

Heavy Duty surge suppression specifically rated for highly inductive load kick application. i.e. Magnets

Power on indication light

Industrial duty floor mounted NEMA 2 indoor, or NEMA 3R outdoor, convection cooled, vented enclosure with hinged door access

Single side access to all components

Enclosure grounding lug

Options:

DC ammeter and/or voltmeter

Remote on/off pushbutton

Flange mounted on/off pushbutton

Operating Parameters:

Typical Schematic Diagram

* Service Factor:

-115%load continuously at 40 C ambient

-100%load continuously at 50 C ambient

-125%load for two hours at 40 C ambient after 8 hours of 100% load operation

-200%load for one minute at 40 C ambient after 8 hours of 100% load operation

-DCripple 4.63 RMS at 100% resistive load

-DCvoltage requlation 8% on 10% to 100% load variation and 0% AC line variation

*Power factor 95% at 100% load

*Efficiency 95% or better at 100% load

*Approximate Dimensions for NEMA 2/3R Free Standing Enclosures

KW

VOLTS

DIMENSIONS

 

 

 

 

 

3

240 DC

22W

14D

25H

5

240 DC

22W

14D

25H

7.5

240 DC

22W

14D

25H

10

240 DC

22W

14D

25H

12.5

240 DC

28W

18D

29H

15

240 DC

28W

18D

29H

20

240 DC

28W

18D

44H

 

 

 

 

 

KW

VOLTS

DIMENSIONS

 

 

 

 

 

25

240 DC

28W

18D

44H

30

240 DC

28W

18D

44H

40

240 DC

28W

18D

44H

50

240 DC

28W

18D

44H

60

240 DC

36W

24D

54H

75

240 DC

36W

24D

54H

100

240 DC

36W

24D

54H

 

 

 

 

 

* Dimensions Not For Construction Purposes

Hubbell Industrial Controls, Inc.

a subsidiary of Hubbell Inc.

4301 Cheyenne Dr., Archdale, NC 27263

Telephone (336) 434-2800• FAX (336)434-2803

http://www.hubbell-icd.com

Sales@hubbell-icd.com