Description
Product Description
D series Large Size DC motor used polygon structure so that the
using rate of the stator\'s 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.
Product Feature
1.Data listed in the technical data sheet should be employed under
the following conditions:
a) Altitude above sea level maximal1,**0m;
b) Cooling air temperature maximal *0C; Cooling water temperature
maximal *2C;
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, need humid tropic, please
negotiate.
d) The motor is suitable for *-phase bridge style smoothing
reactor, also can adopt power supply of DC generator.
e) The motor accord with GB**5 "The ration and performance of the
rotating electrical machinery", IEC******1 "The ration and
performance of the rotating electrical machinery" and JB/T***7
"Technical requirements of D series middle motor electromotor";
2.The standard rated voltage of the electromotor are **0V, **0V,
**0V, **0V etc. Voltage of other classes can also be derived
according specific situation, but must be negotiated when
ordering.
3.The basic excitation style is separately excited, the excited
voltage is **0V, Voltage of other classes can also be derived
according specific situation, but must be negotiated when
ordering.
4. Short time overload capacity of motor.
Motor can be divided into two kinds according to the use
First 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 3
D series
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 it\'s
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 period\'s 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
**5% 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 **5% rated power for two hours, the
temperature rise can\'t 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 *5s only used once in a
while.
5.The change rate of current
Under all rotate speed and load, the change rate of current (di/dt)
that the motor can endure is **0 times rated current.
6. Libration and noise
a) the libration of the motor accords with GB****8"Measurement
evaluation and limits of the vibration severity of rotating
electrical machines which the shaft center height is *6mm and
above" center standard\'s regulation.
b) The noise of the motor accords with GB****9.3 "Measurement of
airborne noise emitted by rotating electrical machinery and noise
limits".
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 buyer\'s option.
2. Second kind (B): Metal rolling mill DC motor. The output power
of this kind of motor is about *0% 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 requirement of
the user.
Other Information
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