Z4 Series Large DC Motor Product DescriptionZ series DC motor
used polygon structure so that the using rate of the stators inner
space is very high. The magnet yoke is laminated style, suitable
for silicon controlled commutate power supply and it can endure
pulsating current and rapid change of current (load
change).Magnetic poles are fixed by precise orientation. All the
motors of system are with compensate winding, so the reverse
performance is very well. The insulation class of the motor is F,
using of reliable insulation structure and nonmenstruum vacuum
pressure impregnated, guaranteeing the stable performance of
insulation and good heat dissipation. Performance1. The standard
rated voltage of the electromotor are 440V, 550V, 660V, 750V etc.
Voltage of other classes can also be derived according specific
situation, but must be negotiated when ordering. 2. The basic
excitation style is separately excited, the excited voltage is
220V, Voltage of other classes can also be derived according
specific situation, but must be negotiated when ordering. 3. Short
time overload capacity of motor. Motor can be divided into two
kinds according to the useFirst kind (A): ordinary industrial DC
motor; Second kind (B): metal rolling mill DC motor. a) First
kind (A) motor can endure the overload (1min) according to table 1
Table 1percentage of basic speedpercentage of basic speedseldom
usingconstantly using100200175200160150>300140125b)First kind
(B) motor can endure the overload (1min) according to table 2 Table
2percentage of basic speedpercentage of basic speedseldom
usingconstantly
using100200180*175160*200160180*160>300175160*140*When the basic
speed of the motor≥650r/min,using the number in the
bracket.c) The short time overload capacity seldom used means
happens infrequency or only at the urgency, the motor working
exceed the continuous rated overload capacity, we suggest you
adjust the instantaneous open/close device of the switch according
to the short time overload capacity seldom using. The short time
overload capacity seldom constantly used means its an part of the
normal working period, the motor endure the continuous rated
overload capacity again and again. After working at short time
overload, it must working light load to make the overload periods
overload root-mean-square less than its continuous ration.
d)Second kind DC motor(B)can endure the following continuous load;
Working continuous within the rated voltage and rotate speed with
115% rated power overload, the temperature is higher when at this
overload, other features maybe different from working at the rated
condition. Within the rated voltage and rotate speed, after running
at the rated overload, working at the 125% rated power for two
hours, the temperature rise cant overrun the regulated numerical
value other features maybe different from working at the rated
condition. e) Second kind DC motor(B),at the rated rotate
speed, the overload can reach 2.5 times no longer than 15s only
used once in a while. 4. The change rate of current
Under all rotate speed and load, the change
rate of current (di/dt) that the motor can endure
is 250 times rated current. 5. Libration and noise a) the
libration of the motor accords with GB10068Measurement evaluation
and limits of the vibration severity of rotating electrical
machines which the shaft center height is 56mm and above center
standards regulation. b) The noise of the motor accords with
GB10069.3 Measurement of airborne noise emitted by rotating
electrical machinery and noise limits. 6.working condition a)
Altitude above sea level maximal is1,000m; b) Cooling air
temperature maximal is 40oC; Cooling water
temperature maximal is 32oC; c) The motor can be
installed under foul situation, but the right
cooling method of cooling method of cooling and
defend class must be chosen. If the situation is special, please
negotiate. d) The motor is suitable for 3-phase bridge rectfier
power supply, also can adopt power supply of DC generator. e) The
motor accord with GB755 ''The ration and performance of
the rotating electrical machinery'', IEC60034-1 ''
The ration and performance of the rotating
electrical machinery'' and JB/T9577 ''Technical
requirements of Z series middle motor electromotor''.7.The
efficiencies listed in the data sheet are for rated output, voltage
and speed, and include excitation loss. The choice of the motors
capacity 1.First kind (A): Ordinary
industrial DC motor. The technical data of this kind of motor
please see the technical data table. The buyer can decide the
capacity, voltage, running speed and the method of cooling of the
motor at the buyers option. 2. Second kind
(B): Metal rolling mill DC motor. The output power of this kind of
motor is about 20% lower than kind (A), the detail numerical value
can be negotiated by the user and the manufacture.
3. Exclude the specification of technical
data in the table. Manufacturer can derive other specification at
the r
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