KW
RPM
Mounting
Frame
Voltage
Frequency
Ambient

Altitude
Rotor type
Enclosure
Protection
Insulation class
Duty cycle
Standard

: 0.*8 to *0.0 Kw
: ***0, ***0, **0
: Foot(B3), flange(B5), face(b*4) & combination
: *1 to **0 L
: **5v +/- *0% or as required
: *0Hz. +/*5% or as required
: *0 c. for motors other than this, a deration factor is   applied as per Fig No.1
: Upto ***0m above m.s.l.
: Squirrel cage aluminium die cast.
: Totally enclosed fan cooled (TEFC)
: IP*5
: Class f insulation with temp. rise limited to class B.
: S*-S5
: IS:**5, IS: ***1, IS ***3, iS : ***2

 

Fig. 1 : Deration Factor

Ambient Temperature

Deration Factor

**0C
**0C
**0C
**0C

0.*6
0.*0
0.*3
0.*5

Castings : "Hindustan " crane duty motors' housings & end shields are made from high quality castings as per IS***0. All components are machined to correct accuracy & alignment.

Stampings : The stampings are made from low loss high permeability steel.

Terminal Box : Standard location of terminal box is on top. However the terminal box on right or left side can be provided on request. The terminal box can rotated in steps of *0 degrees in each position.

MOTORS WITH INTEGRAL BRAKES :
These motors can be supplied with integral electromagnetic DC fail safe brakes with built in rectifiers.

FLAME PROOF MOTORS :
"Hindustan' crane duty motors are also available with flame proof enclosures.

ENQUIRY DETAILS :
When placing enquiry , please furnish following details
• Application details
• Motor power & speed
• Voltage & frequency variations
• Mounting
• No. of start / stop per hour with duty & CDF
• Load GD at motor speed
• Load torque or torque speed curve of driven equipment.
• Duty cycle diagram if other than those described here in.

DEFINATIONS :
The terms frequently used in intermittent duty drives are as follows :
1) Duty : Operation of the motor at load including no load & deenergised period to which the motor is subjected including the sequence & duration.
2) Cyclic Duration Factor ( CDF ) : The ratio between the period of loading including starting & electric braking and the duration of the duty cycle expressed as percentage.
3) Starting : The processing of energizing a motor to bring it upto its rated speed from rest.
4) Electric Braking : A system in which a braking action is applied to an electric motor by causing it to act as a generator.
5) Rwegenerative Braking : A system of electric braking in which energy is returned to the supply system.
6) D.C. Injection Braking : A form of braking of an induction motor in which a seperate DC supply is used to magnetise the motor.
7) Plugging : A form of braking of an induction motor obtained by reversing thwe phase sequence of its any two lines.