|Model||C3C C4C C5C C6C|
C3CH C4CH C5CH
C3W C4W C5W
|Power||Up to 10.000 kW|
|Voltages||Up to 15.000 V|
|Model IP23||IE3 C6C|
LV C3C - C4C - C5C
MV C3CH - C4CH - C5CH
|Model IP44||LV C3W - C4W - C5W|
MV C4WH - C5WH
|Frame||315 ± 1000|
|Poles||4, 6, 8, 10 and 12|
|Cooling||IC 01 (IC 06 optional)|
|Main Applications||Cement, Chemical, Manufacturing processes, Metals, Mining, Power, Pulp and paper, Sugar mill, Water pumping and treatments|
HousingRigid frame, rugged welded steel fabrication (EN 10025 - S235 JR).
Frame is provided with side ribs to increase the strength.
Marelli Motori motors for continuous duty operation are designed to meet vibration levels per IEC 60034-14, ISO 10816-1 and BS 5000-3.
ShieldMade of grey cast-iron (EN 1561 – GJL 200) up to 500 frame size motors.
Made of hot-rolled structural steel (EN 10025 – S235 JR) from size 560 and above.
Made in carbon steel (EN 10083 – 2 C40 – TN) up to 450 frame and hot-rolled structural steel from 500 frame (EN 10025 – S355 JR).
Cylindrical shaft with key.
|Main terminal box||
Main terminal boxMounted on top.
Made of cold-rolled formable steels EN 10025 – S235JR.
Internal FanMade of aluminum alloy up to 400 frame.
Made of hot-rolled structural steel above (EN 10025 – S235 JR).
EnclosureODP – Open Drip Proof Motors.
Cooling SystemIC 01 as per IEC60034-6
Internal air is flowing by a fan mounted on the shaft of the motor at the driven side.
The cooling air is taken on the ND-end, the air outlet is on the D-end.
On request for variable speed application an external ventilation unit can be supplied to get the IC 06 cooling type.
|Degree of protection||
Degree of protectionIP 23 as per IEC60034-5.
The series can be supplied with air inlet filters to achieve the IP 44 rating.
The motor series name will be C3W - C4W.
MountingIM B3, V1 and V10 as per IEC60034-7.
Stator/Rotor coreLaminated and enamel-insulated on both sides to minimise eddy-current losses.
The stator winding is made of flat copper or round copper wire depending on the machine size.
The completely wound stator pack with housing is thereby impregnated in an epoxy-resin VPI.
The subsequent heat treatment hardens the resin.
RotorShort circuit rotor type.
Depending on machine size, the rotor construction is either a solid shaft or welded ribbed shaft.
The rotor winding can be either a pressure die cast aluminum or a copper bar construction.
Antifriction bearings grease lubricated (ball or roller type) or oil lubricated sleeve bearing.
The theoretical lifetime of bearings, L10h according to ISO 281/1 standard, of standard horizontal construction motors, without external forces (radial and / or axial) is in excess of 50.000 hours.
On request, the lifetime of bearings, L10h can be in excess of 100.000 hours.
Locating bearings are on the D end side and floating bearings on the ND end side.
Both bearings are fitted with a regreasing system.
The used grease is removed through a valve locked in the outer bearing cover.
Sleeve bearings available as an option.
On request special bearings are designed where high radial and axial forces are applied.
Impregnation systemStator and rotor are VPI treated with an unsaturated polyester amide resin which is polymerised in an oven.
Insulation systemStator: F class insulated with a synthetic enamel.
(H class insulation available on request)
Protective treatmentsDedicated protective enamel is applied on the winding.
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