RAMSON  DC MOTORS 

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DC Solid Yoke Motors   - Manufacturing Range: 0.25 Hp to 50 Hp  

 

Types: Shunt, Series and Compound
 

Protection:
S.P.D.P Screen Protected Drip Proof
S.P.F.C Screen Protected Force Cooled
T.E Totally Enclosed 

Voltages:
Armature  110 - 220 - 440 – 550
Field          220 

Speeds:
1000,1500 &  3000 rpm.  Other Speeds can be provided on request 

Mountings:
Horizontal Foot Mounted, Horizontal/Vertical Flange Mounting 

Frames:
80S      80M   80L    112S    112M    112L   132S
132M   132L 160S   160M   160L    180       225 

Features: 

• Specially designed armature for low moment of inertia and quick response
• Commutator has high mechanical strength and is suitable for heavy-duty applications.
• Bearings are pre-charged with high temperature crease and has life time of 20,000 to 30,000  operational hours (depending on operational conditions)
• Adjustable pressure radial brush holders – lasts longer and reduces maintenance
• Armature field coils and interpoles are of class ‘B’ insulation (135°C)
• Dimensions comply with IEC Frame sizes
• Insulation of class ‘F’ and ‘H’ are provided on request

Typical Application
Paper Industries, Plastic Machines, Textile Machines, Sugar Factories, Cement Industries, Amusement Rides, Milk & Food Processing, Packing Industries, Pharmaceutical Industries, Offset Printing, R&D and Electrical Engineering Laboratories & Machines Labs. 

Our Manufacturing Range
DC Electric Motors (Shunt, Series & Compound), DC Generators, DC Motor Generator Set, Permanent Magnet DC Motors, DC Dynamometers, DC Traction Duty, Battery Operated Motors, Alternators, AC Motors and special Purpose Motors 

Motor Accessories
Thermal relay embedded in Interpole Winding, Brake fitted on commutator side, Tacho Generator, Speed limit Switch, Base plate and coupling, Loading Drum, Motor Starter - Face plate/Contactor type, cooling blower, Shunt regulator, Pulley and belt. 

Ordering Information 

• Motor rating, Output, Armature Voltage, Excitation Voltage, Base speed, Speed range and maximum speed.
• Protection and cooling form
• Mounting arrangement
• Direction of rotation when viewed from the commutator end  (clockwise - anti clockwise - reversible)
• Modifications/Accessories required
• Industry and Application of the Motor

 
   Technical Details

 
 Enclosure: SPDP Type
 Base Speed 1500 rpm. Form Factor 1.5 for 220 Volts and 1 for 440 Volts
 
 

HP	KW	Frame	Voltage	Moment of Inertia Kgm2	Rated Armature Current	Weight Kgs Approx.
0.25	0.18	80 S	220	0.0025	1A	13
0.50	0.37	80 M	220	0.0028	2A	18
1.00	0.75	80 L	220	0.0031	4A	20
1.00	0.75	112 S	220	0.0153	4A	27
2.00	1.50	112 M	220	0.0165	8A	31
3.00	2.20	132 S	220	0.030	12 A	55
5.00	3.70	132 M	220/440	0.035	20 A	63

 

 
 

Enclosure: SPDP Type
 Base Speed 1500 rpm. Form Factor 1
 
 

Hp	Kw	Frame	Voltage	Moment of Inertia  kgm2	Rated Armature current	Weight kg Approx.
7.50	5.60	132L/160S	440	0.148	15 A	95
10.00	7.50	160 S	440	0.150	20 A	110
12.00	8.00	160 S	440	0.152	24 A	120
15.00	11.00	160 M	440	0.154	30 A	140
20.00	15.00	160 L	440	0.150	40 A	160
25.00	18.60	225	440	0.415	50 A	254
30.00	22.00	225	440	0.485	60 A	254
40.00	30.00	225	440	0.515	80 A	328
50.00	45.00	225	440	0.534	100 A	450

 
 
 
 
 
 Enclosure: TEFC Type
 Base speed 1500 rpm. Form Factor for 220 Volts is 1.5 and 1 for 440 Volts.
 
 

H.P	Kw	Frame	Voltage	Moment of Inertia kgm2	Rated Armature Current	Weight  kg Approx.
0.25	0.18	100	220	0.0025	1    A	25
0.50	0.37	100	220	0.0028	2     A	27
1.00	0.75	112	220/440	0.0031	4/2   A	30
2.00	1.50	132	220/440	0.030	8/4   A	55
3.00	2.20	132/160	220/440	0.148	12/6  A	65
5.00	3.70	160/180	220/440	0.158	20/10 A	150
7.50	5.50	160/180	440	0.158	30/15 A	180

 

All the rating given above are for guidance only. The design and specifications are likely to  change due to constant R&D.
 

Contact  us

RAMSON & SONS
157, Linghi Chetty Street
Post Box: 1655,  Chennai - 600 001, Tamil Nadu, India
Phone :  044 5340684 , 5341088
Fax :  044 5341088 (During Office Hours)
Email : vatsa@vsnl.com
 
 
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