Circular Lifting Magnets Type : LRV
STANDARD DUTY

 

COILS DUTY FACTOR CHARTS ACCESSORIES PDF DOWNLOAD

 


"ELEKTROMAG" Lifting magnets Type: LRV... are particularly suited for transporting piled up material of irregular shape such as pig iron, turnings, scrap etc. Optimum dimensioning of magnetic, mechanical and electrical components ensure outstanding lifting capacity in relation to magnet dead weight. Thus the load-carrying capacities of even small cranes is used to the full.

"ELEKTROMAG" Lifting magnets Type : LRV... are of sturdy construction, warranting extreme operating safety in toughest working conditions. The magnet body is of permeability steel of maximum toughness. The bumping plate is of non-magnetic, wear resistant, high manganese steel and is generously dimensioned and strongly rib-reinforced. An extra-high inner ring-shaped rib closely surrounds the centre pole to safeguard pole edges against wear.

The standard three-fall chain suspension with common suspension ring has been dimensioned to suit all normal duty loads. To handle extreme weights special chains are available at extra cost.

Fort connection of the supply cable magnets are fitted with a metalclad plug and socket, two -pole plus earth, additionally protected by a cats steel cover. the cover is closed by a captive bolt which cannot get lost and prevents any inadvertent opening of the cover at high acceleration.


COILS

Standard exciter coils are wound with high conductivity aluminium conductor. Using highest grade insulating material. Coils are cast into their magnet body with a special resin compound of excellent heat conductivity and thus rigidly fixed in position. In special cases can be furnished with copper conductor.


DUTY FACTOR

The permissible relative duty factor is 60% 10 minutes, i.e. 6 minutes ON and 4 minutes OFF and rated for class `H' insulation.

Normal operating voltage is 220 volts DC with the exception of type : LRV5 which is for an operating voltage of 110 Volts DC. Power input for cold magnet listed in table governs selection of suitable electrical accessories. In continuous service, heating of the exciter windings reduces power input.


TECHNICAL DATA
Tear-off forces listed relate to a level solid, thick slab and an air-gap corresponding to 1/300 or 1/20 of outer magnet diameter (d).

Lifting capacity values listed in table apply to magnets at service temperature.

Lifting capacity values are average values. They may be exceeded or not be reached in actual duty since the volume seized in each lifting operation depends largely on type, shape, alloy composition, distribution and storage of the material.


ELECTRICAL ACCESSORIES REQUIRED WITH THE LIFTING MAGNET: (AVAILABLE FROM ELEKTROMAG)

  1. Transform rectifier set.
  2. Contactor panel.
  3. Cable reeling drum.
  4. Master controller or push button station.
TABLE FOR LIFTING MAGNETS TYPE :LRV... 60% 10 MINS. DUTY FACTOR
TYPE P.C. COLD KW APPROX. WEIGHT Kg. DIMENSIONS IN MM LOAD CAPACITY OF CHAIN ( MAX.) KG.
D E APPROX. F G H
LRV5 1.2* 112 498 482 135 18 75 2350
LRV7 2.3 264 700 579 135 18 75 2350
LRV9 3.7 510 888 676 160 22 90 4250
LRV10 4.5 629 988 736 180 26 100 5800
LRV11 5.6 1000 1094 810 180 26 110 6500
LRV13 7.9 1425 1297 918 200 32 110 10,200
LRV15 9.2 1970 1500 1015 200 32 110 11,000


TEAR OFF FORCE APPROXIMATE LIFTING CAPACITIES FOR MAGNETS
TYPE MAGNET d/300 COLD MAGNET d/300 WARM MAGNET d/20 WARM SLAB INGOT PIG CAST IRON SCRAP Grade 3a SOLID SCRAP Grade 24 SHORT STEEL TURNINGS Grade 40
  daN daN daN Kg. Kg. Kg. Kg. Kg.
LRV5 3200 2800 260 1400 90 75 70 30
LRV7 6200 5500 520 2750 195 165 145 70
LRV9 10250 9200 850 4600 350 250 235 120
LRV10 12900 11700 1100 5850 450 330 320 165
LRV11 15800 14000 1400 7000 600 470 410 210
LRV13 20000 18600 1950 9300 950 770 550 370
LRV15 25200 23500 2500 11900 1340 1130 750 510
*For 110 volts only
1Kg = 0.981 daN; 1 daN = 1.02 Kg.

Note : The design, dimensions and specifications are subject to alterations without prior notice due to constant development for better performance.

Magnetic Separators/Lifting Magnets