BIS IS 4722 : 2001(R2006)

FOREWORD
1 SCOPE
2 REFERENCES
3 TERMINOLOGY
4 OPERATING CONDITIONS
5 TYPES OF ENCLOSURES
6 METHOD OF COOLING
7 ASSIGNMENT OF RATINGS
8 MACHINES FOR NON-STANDARD VOLTAGES, FREQUENCY AND
   NUMBER OF PHASES
9 IRREGULARITIES OF WAVEFORM
10 CO-ORDINATION OF VOLTAGES AND OUTPUTS
11 DUTY AND RATING
12 CONSTRUCTIONAL REQUIREMENTS
13 TEMPERATURE-RISE
14 OCCASIONAL EXCESS CURRENT FOR ROTATING MACHINES
15 MOMENTARY EXCESS TORQUE FOR MOTORS
16 PULL-UP TORQUE
17 OVERSPEED
18 UNBALANCED CURRENTS OF SYNCHRONOUS MACHINES
19 SHORT-CIRCUIT CURRENT
20 SHORT-CIRCUIT WITHSTAND AND EXCITATION OF SYNCHRONOUS
   MACHINES
21 LIMITS OF VIBRATION SEVERITY
22 COMMUTATION
23 EFFICIENCY
24 POWER FACTOR
25 TOLERANCES
26 TERMINAL MARKINGS
27 RATING PLATES
28 INFORMATION TO BE GIVEN WITH ENQUIRY AND ORDER
29 TESTS
30 ELECTRIC STRENGTH
31 COMMUTATION TEST
32 OVERSPEED TEST
33 UNBALANCED CURRENTS OF SYNCHRONOUS MACHINES
34 SHORT-CIRCUIT CURRENT TEST
35 OCCASIONAL EXCESS CURRENT
36 MOMENTARY EXCESS TORQUE
37 PULL UP TORQUE FOR MOTORS
38 LIMITS OF VIBRATION
ANNEX A - LIST OF REFERRED INDIAN STANDARDS
ANNEX B - GRADES OF SPARKING
ANNEX C - INFORMATION TO BE GIVEN WITH ENQUIRY AND ORDER