Hubbell 4292 User Manual

Hubbell Industrial Controls, Inc.

Lifting Magnet Controllers

Type 4292 Compact Controller for Scrap Yards

Specication/Price Sheet • August 2008 • Replaces Jan 2008

Description

The Type 4292 Yard­master Controllers
incorporated heavy-duty
time proven components
arranged to provide
optimum control of your
lifting magnets.

A mechanically rugged
high thermal capacity
discharge varistor
assembly is permanently
connected in parallel
with the magnet and
provides a safe dis­charge path for the
stored magnetic energy.
With Yardmaster mag­net controllers, induced
voltage cannot return
to the line, permitting
rectied power supplies
to be used without
the added expense of
special protective loads
or bypass circuits.

Application

The Type 4292 Yard­master Controllers are
suited for many uses
from light scrap handling
to the handling of heavy
billets or plates. It may
be used with all types
and makes of DC lifting

magnets.

Features

Automatic Discharge•

Rated 250 VDC @ 5-100 amps•

Front-Wired Front-Removable components•

Mechanically interlocked “Lift” and “Drop” •
NEMA rated mill duty contactors

Permanently connected 700V discharge •
path completely independent from the
line that protects magnet and generator

High-Thermal capacity varistor discharge •
path

Peak magnet induced voltage limited to •
under 700 Volts

Long electrical contact life•

Minimum Maintenance•

Dribble control - Standard•

Ventilated indoor/outdoor NEMA 3R •
enclosure

4292

Automatic
Discharge
Type
Controllers

The Type 4292 Yardmaster
Automatic Discharge Type
Lifting Magnet Controller
provides a fast and clean
release of mag-net loads
by applying full voltage
reverse current to the
magnet. The full voltage
re-verse current feature
permits the operator to
promptly return for another
lift.

The drop contactor is
under the control of the
operator’s Master Switch
and the dis-charge sensor
module (DSM). When
the operator’s Master
Switch signals the magnet
controller to drop the load,
the “Lift” contactors (L)
open. The stored magnet
energy is dissipated in the
dis-charge varistor. When
the discharge voltage
declines to approximately
300V, the DSM energizes
the drop relay (DR) which
in turn enables the drop
contactor (D) to close
applying full voltage reverse
cur-rent to the magnet and
begin the adjust-able time
reverse current cycle. After
the completion of the timed
reverse cycle the drop
relay and drop contactor

are deenergized.

Model Numbers & Prices

Part

Number

Control Circuit

Voltage

List Price

(Sch. KD)

HC91883202 230 VDC $5,600
HC91883204 24 VDC $5,600
HC91883206 12 VDC $5,600

(Sch. ET)

HCTA4215

Controller ampacity is based on being used with a 50% duty
magnet in a 40° C ambient.

Master Switch for

230 VDC Operation

$450

Hubbell Industrial Controls, Inc.

a subsidiary of Hubbell Incorporated

4301 Cheyenne Drive, Archdale, NC 27263

Telephone [phone] · Fax [phone]

http://www.hubbell-icd.com

[e-mail]