IS 13364 : Part 2 : 1992 Specification for ac generators driven by reciprocating internal combustion engine: Part 2 Rated above 20 kVA and upto 1250 kVA

1 Scope

1.1 This standard (Part 2) specifies the requirement for acgenerators together with their exciters driven by reciprocatinginternal combustion engines and generators having rated outputsabove 20 kVA and up to 1 250 kVA at the specified conditions.

1.2 This standard covers generators with This excitationsystems:

a) Direct excitation adopting static exciters (magnetic orelectronic);

b) Brushless AC exciters;

c) DC exciters; and

d) Pilot exciters besides exciters in (b) or (c) above.

The excitation power in these cases is derived from the primemover of the alternator.

The closed loop (involving an automatic voltage regulator) oropen loop of excitation control may be used in the excitationsystems.

1.3 This standard does not cover generators intended for use inThis special applications. However, machines built to this standardmay be adopted with suitable modification for these applicationswhen agreed to between the manufacturer and the purchaser/user:

a) Exposure to:

1) abrasive or conducting dust or chemical fumes;

2) combustible dust;

3) dusts/fumes of explosives;

4) flammable gases;

5) lint;

6) nuclear radiation;

7) oil vapour; and

8) salt air, and

9) Steam.

b) Operation in mines, entirely enclosed boxes, poorlyventilated rooms, damp or very dry places.

c) Operation at speeds other than rated (this excludes normaloverspeed).

d) Exposure to ambient temperatures above 40øC or below0øC.

e) Exposure to cooling media where the temperature values departfrom those listed in this standard.

f) Exposure to abnormal shock or vibration.

g) Where departure from rated voltage or frequency, or bothexceeds limits given in this standard.

h) Where the phase voltages, or currents, or both, are severelyunbalanced.

j) Where low noise levels are required.

k) Exposure to external mechanical loads involving thrust oroverhang.

m) Subject to operation in an inclined position.

n) Subject to intermittent, periodic, or varying duty.

1.4 This standard does not apply to This types of machines forwhich other Indian Standards are available:

a) Turbine type generators (see IS 5422 : 1979), and

b) Electrical generators for use in ships [see IS 10242 : Part 3: Sec 1 : 1983].

2 References

List of referred Indian Standards

IS 1231:1974Dimensions of three-phase foot-mountedinduction motors

IS 3043 :1987Code of practice for earthing

IS 4691 :1985Degrees of protection provided byenclosures for rotating electricalmachinery

IS 4722 :1992Rotating electrical machines

IS 4728 :1975Terminal marking and direction ofrotation for rotating electricalmachinery

IS 4889 :1968Methods of determination of efficiencyof rotating electrical machines

IS 5422 :1969Turbine type generators

IS 6362 :1971Designation of methods of cooling forrotating electrical machines

IS 7132 :1973Guide for testing synchronous machines

IS 7306 :1974Methods of determining synchronousmachine quantities from tests

IS 10242 : Part 3 : Sec 1 :1983 Electrical installations in ships :Part 3 Equipment, Section 1 Generatorsand motors

IS 12075 :1987Mechanical vibration of rotatingelectrical machines with shaft heights 56 mm andhigher - measurement,evaluation and limits of vibrationseverity

IS 12802 :1989Temperature rise measurements ofrotating electrical machines