IEC 60034-22 pdf download – Rotating electrical machines – Part 22: AC generators for reciprocating internal combustion (RIC) engine driven generating sets

IEC 60034-22 pdf download – Rotating electrical machines – Part 22: AC generators for reciprocating internal combustion (RIC) engine driven generating sets
1 scope
This part of lEC 60034 establishes the principal characteristics of a.c. generators under thecontrol of their voltage regulators when used for reciprocating internal combustion(RIC) enginedriven generating set applications and supplements the requirements given in lEc 60034-1. Itcovers the use of such generators for land and marine use, but excludes generating sets usedon aircraft or used to propel land vehicles and locomotives.
NOTE 1 For some specific applications (e.g. essential hospital supplies, high-rise buildings， etc.) supplementaryrequirements may be necessary.The provisions of this standard should be regarded as a basis for suchrequirements.
NOTE 2 Attention is drawn to the need to take note of additional regulations or requirements imposed by variousregulatory bodies.Such regulations or requirements may form the subject of agreement between the customer andthe manufacturer when conditions of use of the end product invoke such requirements.
NOTE 3 Examples of regulatory authorities:
– classification societies, for generating sets used on ships and offshore installations;- government agencies;
inspection agencies, local utilities, etc.
Annex A discusses the behaviour of generators covered by this standard when subjected tosudden load changes.
2Normative references
The following referenced documents are indispensable for the application of this document.Fordated references,only the edition cited applies. For undated references, the latest edition ofthe referenced document (including any amendments) applies.
IEC 60034-1:2004,Rotating electrical machines – Part 1: Rating and performancelEC 60085,Electrical insulation – Thermal evaluation and designation
CISPR 11,Industrial,scientific and medical equipment – Radio-frequency disturbancecharacteristics – Limits and methods of measurement
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply:
NOTE 1 ln this standard, suffix “N” is used for “rated”” in accordance with lEC 60027-1 and IEC 60027-4 whereasin lSO 8528。suffix “r” is so used.
NOTE 2 Voltage terms relate to a generator running at constant (rated) speed under the control of the normalexcitation and voltage control system.
3.1
rated output
S N
the product of the rated r.m.s. voltage, the rated r.m.s. current and a constant m, expressed in volt-amperes (VA) or its decimal multiples
where
m = 1 for single-phase;
m = 2 for two-phase;
m = 3 for three-phase
3.2
rated active power
P N
the product of the rated r.m.s. voltage, the in-phase component of the rated r.m.s. current and
a constant m, expressed in watts (W) or its decimal multiples
where
m = 1 for single-phase;
m = 2 for two-phase;
m = 3 for three-phase
3.3
rated power factor
cos φ N
the ratio of the rated active power to the rated output
3.4
rated reactive power
Q N
the geometrical difference of the rated apparent power and the rated active power expressed in volt-amperes reactive (var) or its decimal multiples
3.5
rated speed of rotation
n N
the speed of rotation necessary for voltage generation at rated frequency
NOTE 1 For a synchronous generator, the rated speed of rotation is given by:
where
p is the number of pole pairs;
f N is the rated frequency (according to load requirements).
For an asynchronous generator the rated speed of rotation is given by:
5 Limits of temperature and temperature rise
5.1 Base continuous rating
The generator shall be capable of delivering its base continuous rating (BR) over the whole range of operating conditions (e.g. minimum to maximum coolant temperatures) with total temperatures not exceeding the sum of 40 °C and the temperature rises specified in Table 6 of IEC 60034-1 . See Note 1 below.
5.2 Peak continuous rating
At the generator peak continuous rating (PR), the total temperatures may be increased by the following allowances (see Notes 1 and 2).
For ambient temperatures below 1 0 °C, the limit of total temperature shall be reduced by 1 °C for each °C by which the ambient temperature is below 1 0 °C.
6 Parallel operation 6.1 General When running in parallel with other generator sets or with another source of supply, means shall be provided to ensure stable operation and correct sharing of reactive power.