Type Designation
The letter 'B' stands for motor with compensating winding, only applicable to Z 4-250 and Z 4-280.
The digit 1o c2 for short, and long endshield
As regards frame size-112, the first digit means NO. of poles the second digit for core length
The letter 'Z' for d-c machine, digit '4' for ordinal number of the fourth series design. The digit 1, 2for short, and long endshield.
Construction
1. Protection, mounting and type of construction:
a. Types of protection of the whole series:IP21S
b. Mounting modes comply with the State Standa GB/T997 stipulated as follow:
Methods of cooling
Modes of cooling for all the motors are separate cooling, force ventilated. Cooling by frame radially mounted, separately powered ventilating fan, and attached with an air filter. Modes of cooing for motor may be made into three types, namely IC06, IC17 and IC37.
a. For Z4-100-Z4-160, the blower is mounted on the non-drive side.
b. For Z4-180-Z 4-450, the blower is mounted on the drive side.
c. The required cooling air volume, air pressure and fan motor capacity are shown below: (Table 1)
Motors with the following five methods of cooling can also be ordered, but prior consultations are needed.
a.Frame size 100 up to 250 may be made into the totally enclosed, frame cooled motor(IC 410)
b.Frame size 160 up to 250 may be made into the separately ventilated motor with blower mounted on its nondrive side(IC 05).
c.Frame size 100 up to 200 may be made into the self cooled open motor with its own fan mounted on the shaft(IC 01)
d.Frame size 160 up to 355 may be made into totally enclosed motor with interal cooling air circulation by independent air-air heat exchanger mounted on it(TC666)
e.Frame size 160 up to 450 may be made into totally enclosed motor with independent air-water heat exchanger mounted on it(IC 86 w1).
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