Z4 Series Medium Size Industrial Machine Drive DC Motor
Series Z4 Medium Size Machine DC Motors, also called as electric
motors are newly developed products of our factory. The products
are found wide use for prime mover in various, such as mill
auxiliary in metallurgical industry, metal cutting machine-tool,
paper making, print, textile, printing and dyeing, cement-making,
plasticextruding machine, etc. Outline and mounting dimensions of
the motors comply with IEC72 Standard, except for the axial
distance between the mounting holes (dimension B). Performance and
technical requirements of the motors can be checked in accordance
with IEC34-1 Standard of the International Electro technical
Commission, or DIN57350 Norm of the Deutsche Industries-Norm. The
motors are class F insulated, with reliable insulating construction
and impregnating process, ensuring stable dielectric performance
and excellent heat dissipation. The motors possess the features of
small size, good performance, light weight, large output, high
efficiency and reliability, being able to match the current
international advanced level. The motors can be lastingly operated
form fully controlled three-phase bridge without a smoothing
reactor. Motors for 160V may be operated on single-phase bridge
thyristor. In that case, a smoothing reactor, whose inductance is
specified in the relevant technical date, should be inserted in the
reactor to suppress ripple current. Features: 1) Technical
standards: A) Continuous duty: S1 B) Domestic environmental
standard: GB/T 755 (fundamental technical qualifications for
motors) 2) Specifications: A) Nominal rated voltage: 160V, 440V
(220V, 440V or other voltage available) B) Nominal field voltage:
180V C) Rated speed (nine grades): 200rpm, 300rpm, 400rpm, 500rpm,
600rpm, 750rpm, 1000rpm, 1500rpm, 3000rpm 3) Operating ambients: A)
Altitude: Less than or equal to 1, 000m B) Maximum cooling
temperature: 40oC C) Free from acidic, alkali fumes or other
irritant gas which could corrode insulating materials 4)
Compensation windings available for Z4-315, Z4-355, Z4-400 and
Z4-450 5) Z4-250 and Z4-280 are also feasible with compensation
windings 6) Marked earthing terminals supplied Armature and field
circuits for motors may be either operated by static thyristor
controlled supplies or DC generators. Torque can be maintained
constant by reducing speed via weakening armature voltage below
rated value. We assure that the lowest armature speed range can be
decreased to 20rpm by invariable torque and stable running.
Meanwhile, field voltage is reduced to weaken speed with a steady
output. These motors have separate excitations. In addition to the
above listed nominal field voltage, other kinds of excitation
voltage are also acceptable according tocustomers' requirements. If
voltage is less than 500V, forced excitation is allowed. When a
motor is normally operating, the excitation current should be no
higher than the rated excitation current. To keep the insulating
materials of the excitation system reliable, the motor must be
protected against self-induced voltage by a resistor connected in
parallel with the field windings when the excitation circuits of
the motor are interrupted. At rated field voltage, the resistance
value of a shunt resistor is about seven times more than field
resistance at low temperature. While the field voltage is higher
than nominal value, the resistance value of a shunt resistor may be
lower. Some pictures for Z4 Series Medium Size Industrial Machine
Drive DC Motor: /* January 22, 2024 19:08:37
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