| 〉Products info |
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| + DC Motor |
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| + Squirrel Cage AC Motor |
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| + Winding AC Motor |
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| + Synchronous Motor |
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T Series |
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TBP Frequency Series for Milling |
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TDMK Series for mi ning Grinder |
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TK Series for Air Compressor |
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| + Mine Elevator Motor |
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ZTD Series Large-scale DC Motor |
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TTD Frequency Coversion Series Synchronous Motor |
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| + Petroleum Drilling Motor |
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| + Explosion-proof Motor |
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YB series |
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YBJK Series |
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YA Series Ampere Supplemental Type |
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| + Wind Driven Generator |
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Double-feed winding Type |
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Direct Driven Brushless Excitation Synchronous Type |
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| + Medium and Small Turbo-dynamo |
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| 〉Products |
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| Alternating current motor-->YR，YRKS、YRKK series series |
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General
Description
YR，YRKS，YRKK series medium-sized high voltage Wound
rotor three phase asynchronous motors are our latest products,there
are totally 6 frame size ranging from H355 to H630.
To develop these series motors,advanced analytic and
calculation technology is used,fine materials and excellent
workmanship are also adopted during manuffacturing.All
of those give series motors high efficiency,low noise,low
vibrability.
All motors in basic design are of horizontal with
feet mounting type(IMB3),duty type is continuous operation(S1).
Normally,the motors have three types of enclosure
protection degree:IP:23,IP44 or IP54.
In respect to cooling type,the motors basically have
IC01,IC81W,IC611 or IC616 four types to be selected.
Series motors may be uesd to drive rolling mills,grinders,hoists,belt
conveyers,heavy load blowers,etc.
Briefing
of construction
A steel plate welded construction has been used to
reduce the frame weight and increase the rigidity,optimum
construction design also makes series motors convenience
for installation and maintenance.
One piece laminations for the stator and rotor are
precision-stamped from low loss eletrical steel,thus the
iron loss is minimized and the efficiency is improved.
The insulation class of series motors is class F.The
stator coil is a double layer formed coil,the stator core
is stacked and assembled with coils outside the frame,coil
braces are applied on the circumference of the stator
coil ends with spacers inserted between coils to improve
rigidity.After the connection between coils is made,the
completed stator winding is placed in a vacum tank and
impregnated,then the stator winding is put into the stator
frame and fixed with it.
The rotor cores are shrunk onto the sharft and rotor
coils are tightly fitted into the slots to minimize vibration.Advanced
brazing technology of the rotor coils to coils insures
high mechanical strength and good electrical conductivity
at the brazed joints.The coil ends are supported by bandage.The
rotor winding is vacuum pressure impregnated(VPI)and connected
to the slip ring unit.This construction gives the rotor
an excellent fit against centrifugal forces.
The slip ring unit is mounted outside the frame to
the non-drive end in order to provide easy maintenance
without disassembling the motor.As a result,the bearing
are closer together,preventing any vibration.Carbon dust,caused
by brush wear,is prevented from entering the motor dueto
the location of the unit.The slip ring unit has a shaft
mounted fan and an easily removable and washable filter
located in the slip ring housing to collect the carbon
dust caused by brush wear.
The standard designed series motors adopt anti-friction
bearings,self-lubricated with grease or oil according
to motor's frame size and operating speed,separate oil
supply system is not needed.Split sleeve bearings could
also be used when specified by purchaser,they are either
ring-lubricated or forced-oil lubricated depending on
the loading. |
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