Squirrel Cage Rotor Medium Voltage AC Induction Motor High Voltage
Motor Asynchronous
Motors---------------------------------------------------------------------------------------------General
descriptionY,YKS,YKK Series high voltage three-phase asynchronous
motors (Frame No.355-1000) mounting dimensions and tolerance are
coincident with China standard GB755, International Electrical
committee standard IEC34-1and machinery-profession standards
JB/T/7593 JB/T10315.1 etc.The grade of protection for outer cover
is in accordance with GB4942 and IEC34-5 standard, there are four
grades IP23, IPW24, IP44 and IP54. The IP23 grade can update to
IP44(Tube Ventilation) according the customer's request. Also
provide other protective grade specially.The cooling method is
according to the GB/T1993 and IEC34-6 standard . There are three
kinds of cooling method IC01,IC611 and IC81W. Also we can provide
other cooling method according the customer request.The structure
and mounting model is IMB3 (horizontal foot mounted) is in
accordance with GB997 and IEC34-7 (IM code) standards.Structure
specification The frame is made of steel plate being welded up into
form of square tank shape with light weight and firm rigidity
.Stator is a outer-press-assembly structure, the stator winding is
a F grade insulation, at the winding's end part being firm
banded.The whole stator has been treated with VPI technology to
make stator with a robust body and good electrical and moisture
resistance.The rotor can be developed into two modes casting
aluminum and copper bar mode. Casting aluminum rotor is casted with
pure aluminum. Copper-bar rotor is made by copper bars wedges in
the slots, then at the bar's each end to be soldered with a
end-ring by reliable soldering technology. At the end of process,
it must be immersed in lacquer once to strengthen the
integration.Either rolling or sleeve bearing may be adopted, the
protection grade of bearing is IP54. For the rolling bearings mode,
the rolling bearing must be lubricated with grease, and the motor
must have oil-inlet and oil-exhaust devices, motor can also be
non-stop oil injection. For the sleeve bearing mode, the oil supply
system for the bearing must be prepared by customers. But the
efficiency for sleeve bearing motor will be permitted a little
decrease with respect of the technical data table and that is
permissible in according with the relative stipulates of the
standard issued by Ministry of Machine Building.The main terminal
box is designed by Germany DIN standard. The grade of protection is
IP54. The terminal box for standard motor is located at the right
side (Viewed from axle extension). Also can be mounted at left side
according customer's requirement. The outlet hole of terminal box
can face up, down, right and left four directions. There is a
independent grounded device in the main terminal box.Normally the
motors axle is single extension mode, the key is a planar key mode.
We also can provide double shaft extension mode according
customer's requirement.We can install temperature measurements in
stator and bearings. And install inner space heaters for moisture
protecting during stoppage.The Implication of the symbolBy GB4831
stipulation, the motor's type is composed of product symbol and
specification symbol in sequence.The product symbol is demons
treated by motor series symbols, its implication is as
following:Y---------squirrel-cage rotor three-phase asynchronous
motor.YKS------Enclosed squirrel-cage rotor three-phase
asynchronous motor with air-water coolerYKK------ Enclosed
squirrel-cage rotor three-phase asynchronous motor with air-air
coolerThe specification symbol is composed of centre height,
iron-core length number and number of poles.Example:
DetailsYKK series:Frame sizes: 355-1000 Rated output:
185-8000kWInsulation class: F Degree of protection: IP54
/IP55Enclosure: IC611 Mounting: HorizontalRotor: Squirrel cage
Bearing: Rolling bearing or sleeve bearingVoltage: 6kV,
10kVFeatures This motor can be processed by the anticorrosion
anti-mould-proof process to derive outdoor (W) and outdoor
corrosion protection (WF) motors. High efficiency, energy saving,
low vibration, small size, light weight, reliable performance and
easy installation and maintenance. The frame is made of steel plate
being welded up into form of square tank shape with light weight
and firm rigidity. Stator is an outer-press-assembly structure. The
stator winding is F grade insulation at the winding's end part
being firm banded. The whole stator has been treated with VPI
technology to make stator with a robust body and good electric and
moisture proof. The rotor can be developed into casting aluminum
rotor or copper bar rotor. The copper cage rotor guide bar and end
ring are welded by intermediate frequency, and the copper guide bar
diameter groove is treated with solid technology to make it have
high reliability.Applications Ideal for driving all kinds of
general machinery, such as water pump, fan, co
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