Hubbell 4292 manual Lifting Magnet Controllers, Hubbell Industrial Controls, Inc, Replaces Jan

enclosure

• Long electrical contact life

• Minimum Maintenance

• Dribble control - Standard

under 700 Volts

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

• High-Thermal capacity varistor discharge path

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

• Rated 250 VDC @ 5-100 amps

Features

• Automatic Discharge

Hubbell Industrial Controls, Inc.	4292
Lifting Magnet Controllers
Type 4292 Compact Controller for Scrap Yards
Specification/Price Sheet • August 2008 •	Replaces Jan 2008

Description

The Type 4292 Yard-

master 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 dis- charge path for the stored magnetic energy. With Yardmaster mag- net controllers, induced voltage cannot return to the line, permitting

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

• Front-Wired Front-Removable components and the dis-charge sensor module (DSM). When

rectified power supplies to be used without the added expense of special protective loads or bypass circuits.

Application

The Type 4292 Yard- master Controllers are

• Peak magnet induced voltage limited to

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

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.

• Ventilated indoor/outdoor NEMA 3R

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.