Hubbell 4320 - Manual
Hubbell 4320 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Hubbell Industrial Controls, Inc
Lifting Magnet Power Supplies
Specifications 4320 * January 2000
Replaces February 1994
4320
General
Hubbell offers the Type 4320 diode rectifier,
specifically designed and rated for the demand-
ing requirements where short circuits on the DC
output bus are common or probably. The unit is
ideally suited for applications such as scrap lift-
ing magnets or cranes.
Addressing the common problem of blown semi-
conductor fuses resulting from cut magnet ca-
bles, 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-conductor fuses 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 op-
erational.
Cost Savings:
♦
No blown fuses to replace
♦
No spare fuses to inventory
♦
Downtime associated with changing power
semi-conductor fuses 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 assem-
bly; mounted on oversize extruded alumi-
num 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 applica-
tion. i.e. Magnets
♦
Power on indication light
♦
Industrial duty floor mounted NEMA 2 in-
door, 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
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