The Laminated Yoke DC Motors can be customised to suit different environmental conditions and it can be designed to fit a wide spectrum of requirements.
1. Armature Voltage: 440 V DC; Rated Speed: 1500 RPM; Protection: IP 23; Cooling: IC 06; Amb temp: 40 Deg C; Max Altitude: 1000 m;
Overload Class I
2. The motors in Frame upto and including ASBG132 are with Insulation Class F/ F,
3. The motors in Frame ASBG160 & above are with Insulation Class H/ H,
4. Field Weakening Speed as given is indicative. Field weakening Speed Range up to 1: 3 can be offered- provided the field weakening speed is
less than max safe mechanical speed.
5. For other specifications refer to nearest Sales Office
AUX MILL DUTY D.C. MOTORS TO AISE / IPSS STANDARDS
Motors are designed for applications having constant and variable speed requirements. New India offers an entire range of World Class DC Motors with Laminated Yoke in frame sizes from 80 to 710.
We offers Laminated Yoke Motors in Frame Size 100 to 315 with an output range of 1.2kW to 550kW at 1500 RPM. Mill Duty Motors, which finds
application in Steel Plants, are offered in Frame Size 802 to 816 as per AISE/ IPSS Standards. Solid Yoke Motors are offered in Frames 160 to 280,
with both foot and flange mounting arrangements, suitable for use in emergency applications in industries like power plants.
The features and brief details of this entire range of motors are mentioned herein in this catalogue.
The high quality standards maintained in the manufacturing and testing give superior performance- making these motors suitable for operating in all
types of applications.
Conforming to AISE technical report no. 1-1991 /
IPSS 1-03-002-94.
Full speed, half speed and quarter speed designs available.
Suitable for operations upto 500 volts.
Suitable for operation on 3 phase, 6 pulse thyristor converter.
Class 'H' insulation with class 'F' temperature rise limits.
Armature class 'H' with VPI in solventless polyesterimide resin.
TIG welding of armature coil connection to commutator.
STANDARD DATA OF MILL DUTY FRAMES 802 TO 816 :
Double shaft extension 1:9.6 taper with key way paralle to taper
as per AISE or 1:10 taper with key way parallel to shaft axis as
per IPSS.
Convertible between TENV & TEFV enclosure or with top
mounted blower unit.
Loose hanging leads or terminal box as required.
Axial play of 3 mm approximately of shaft.
Brush position of 45 deg. for easy access for maintenance
(except in case of laminated yoke version).
Motor mounting dimension can be matched to replace 600 series
motors to AISE or Russian standard.
SALIENT FEATURES
induction motors of suitable power rating. These motors are selected
strictly in accordance with the air quantity and air velocity required to
ensure optimum cooling of the main dc motors.
Output Range(KW) - 0.37 to 6500
Frame - 80 to 1000
Duty - S1/S3/S5
Armature Voltage - 110 to 1100V
Excitation Voltage - 180 to 360V
Insulation - F/H
Enclosure - IP55
Cooling - IC01/06/17/37/0041/066/W37A86/44
Mounting - B3(Foot)/B5(Flange), B35(Foot Cum Flange)
Standards - BS 5000/IS4722
Rugged and Reliable
Design Parameters Standard features Optional features
1 Rated Armature Voltage 440 V DC For Frame Upto ASBG132: Max 470 V DC,
For Frame 160 & Above: Max 600 V DC.
2 Rated Field Voltage 220 V DC Max Upto 500 V DC
3 Excitation Type Shunt Stabilized Shunt, Series, Compound *
4 Type of Mounting B3 B35, V1, V3
5 Degree of Protection & Cooling IP 23 & IC 06 IP 55 with IC 0041 (Surface Cooled)
IP 55 with IC 0666 (Air to Air Heat Exchanger Cooled)
IP 55 with IC W37A86 (Air to Water Heat Exchanger Cooled)
6 Overload Capacity & Duty Class 160% for 15 sec & Class I 125% for 2 Hrs & Class IV
150% for 2 Hrs & Class V,
Any other cyclic duty applications
7 Arrangement of Terminal Box RHS as seen from DE Any Other Arrangement; (LHS, TOP- as seen from DE)
8 Tacho Mounting Arrangement suitable for DTG 4000 Any other Tacho or Encoder
9 Mounting Position for Force Cooling TOP on NDE Side Any other Location
(RHS; LHS at NDE, RHS; LHS or TOP at DE)
10 Air Flow Direction From NDE to DE From DE to NDE
11 Air Filter NIL Dry Type Filter (Recommended for Dusty Environment)
12 Air Flow Switch NIL Yes
13 Bearings Ball Bearings Roller Bearing at DE Side; to account for high radial load
application
14 Shaft End Single Shaft Extension at Double shaft
15 Brake mounting Arrangement NIL Double shaft extension with suitable flange arrangement at
NDE to mount brake
16 Space heater NIL Resistive Heater suitable for 230 V AC; 1 Phase Supply
17 Thermal Protection NIL Thermisters, thermal switches, RTDs, BTDs- for alarm and
tripping purposes
18 Paint Finish 631 of IS 5 Primer, Epoxy Primer and any other shades
Equipment (Blower)
extension without tacho mounting arrangement
DE- with Tacho mounting
arrangement at NDE
STANDARD AND OPTIONAL FEATURES : For Frame Size of Range ASBG100 to ASBG315 under AJASA Series
* On demand; shunt motors with compensation windings, can be provided in frame ASBG250 & ASBG280 for application involving shear duty.
These motors can accelerate & decelerate better due to compensation and low moment of inertia.
Custom Built Designs
* High Efficiency
L ow Noise
* Improved Cooling Systems
Vacuum Pressure
High Torque to Weight Ratio Impregnation
Spacious Terminal Box
High Dynamic Response
Steel Mill Drives / Rolling Mills / Wire Rod Mills
Cement Millls
Sugar Mills
Paper Mills
Textile Mills
Cable and Wire drawing machines
Mining
Test rigs
Rubber mixers
Printing Machines
Plastic Extruders
LT Motors Division designs and manufactures DC Motors as against customer specific specifications in solid yoke construction.
Salient features of these motors are as below :
1. Solid yoke motors are generally used in emergency applications. In power plants, during shutdown, these motors operate the critical
processes; like lubrication system of turbo generators; air scanner systems of boiler systems; until the power plant is put into operation again.
They are also suitable to operate in dusty and outdoor environments that prevails in cement plants, steel industry etc.,
2. Since they are used in emergency applications; they are run from battery power sources. The standard battery voltages for these motors are
110 V, 125 V & 220 V DC,
3. Stabilization of shunt winding helps these motors to have higher starting torque and therefore quick acceleration during starting. The
stabilization also relieves the motor shaft from access load incase the system gets jammed for external reasons
1. Sparkless commutation under overloads and field weakening
operation range.
2. Longer Brush life due to better commutation,
3. low noise and less ripple torque, especially at low speedsallowing the motor to coast better, due to skewed rotor
construction
4. Excellent steady state and dynamic control response,
5. Compact, low weight, lower Gd2 value- allows swift mechanical
response to meet frequent reversal,
6. Larger sized bearings- for longer life and trouble free operations,
7. Constant and uniform pressure; and top cushioned brushesenhancing commutation,
8. Easy fitting and retro fitting of filters.
9. Sturdy mechanical construction,
10. Compensation :
Motors in Frame 100 through 280 are without compensation
winding,
Motors in Frame 315 are with Compensation Winding,
Compensated Motors in Frame 250 & 280; are also being
made- where the performance demands excellent dynamic
performance- like in shear applications.
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