1 Scope
This part defines requirements, minimum performances and type tests for low-power generating sets driven by reciprocating internal combustion engines for land and marine use (domestic, recreational and industrial application), excluding generating sets used on aircraft.
It concerns mainly low-power generating sets driven by reciprocating internal combustion engines for the generation of single or multiphase alternating current or direct current up to 500V. The generating sets are standard manufactured sets that may be selected from a commercial catalogue or leaflet.
In this part, “l(fā)ow power” is taken to mean power of a magnitude up to approximately 10kW.
Note: An exact determination of a power limit is not possible.
Low-power generating sets for the purpose of this part are determined by the following special features:
——the users normally are laymen (for further details see 3.1);
——the complete generating set is usually transportable, or mobile;
——the electrical output is connected by plugs and sockets (except for extra low voltages, see 6.6.3);
——the generating set is ready for use without any additional installation work by the user.
Generating sets for special applications or of higher rated power conforming to the above special features may, by agreement between manufacturer and customer, be tested in accordance with this part. If supplementary stipulations are required for certain applications, this may be done taking this part as a basis.
This part deals with the special requirements of test and safety design which should be observed in addition to the definitions and requirements laid down in GB/T 2820.1~2820.6, where applicable.
Furthermore, it lays down safety requirements in order to protect the user from danger.
2 Normative references
The following normative documents contain provisions which, through reference in this part of GB/T 2820, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
GB 755-2000 Rotating electrical machines - Rating and performance (idt IEC 60034-1: 1996)
GB/T 2820.1-1997 Reciprocating internal combustion engine driven alternating current generating sets - Part 1: Application, ratings and performance (eqv ISO 8528-1: 1993)
GB/T 2820.2-1997 Reciprocating internal combustion engine driven alternating current generating sets - Part 2: Engines (eqv ISO 8528-2: 1993)
GB/T 2820.3-1997 Reciprocating internal combustion engine driven alternating current generating sets - Part 3: Alternating current generators for generating sets (eqv ISO 8528-3: 1993)
GB/T 2820.4-1997 Reciprocating internal combustion engine driven alternating current generating sets - Part 4: Controlgear and switchgear (eqv ISO 8528-4: 1993)
GB/T 2820.5-1997 Reciprocating internal combustion engine driven alternating current generating sets - Part 5: Generating sets (eqv ISO 8528-5: 1993)
GB/T 2820.6-1997 Reciprocating internal combustion engine driven alternating current generating sets - Part 6: Test methods (eqv ISO 8528-6: 1993)
GB/T 6072.1-2000 Reciprocating internal combustion engines - Performance - Part 1: Standard reference conditions, declarations of power, fuel and lubricating oil consumptions, and test methods (idt ISO 3046-1: 1995)
GB 14023-2000 Vehicles，motorboats and spark-ignited engine-driven devices - Radio disturbance characteristics - Limits and methods of measurement (idt CISPR 19: 1983)
GB/T 14024-1992 Limits and methods of measurement of radio interference characteristics of electric power plant with internal combustion engines - Conducted interference (neq IEC 533)
ISO 7000: 1989 Graphical symbols for use on equipment - Index and synopsis
IEC 60034-5: 1991 Rotating electrical machines - Part 5: Classification of degrees of protection provided by enclosures for rotating electrical machines
IEC 60068-2-63: 1991 Environmental testing - Part 2: test methods - Test Eg. impact, spring hammer
IEC 60083: 1975 Plugs and socket-outlets for domestic and similar general use - Standards
IEC 60245-4: 1980 Rubber insulated cables of rated voltages up to and including 450/750V - Part 4: Cords and flexible cables
IEC 60309-1:1988 Plugs, socket-outlets and couplers for industrial purposes - Part 1: General requirements
IEC 60309-2:1989 Plugs, socket-outlets and couplers for industrial purposes - Part 2: Dimensional interchangeability requirements for pin and contact-tube accessories
IEC 60335-1:1991 Safety of household and similar electrical appliances - Part 7: General requirements
IEC 60364-4-41:1992 Electrical installations of buildings - Part 4: Protection for safety - Chapter 41: Protection against electric shock
IEC 60417:1973 Graphic symbols for use on equipment - Index, survey and compilation of the single sheets
IEC 60529:1989 Degrees of protection provided by enclosures (IP Code)
3 Definitions
For the purposes of this part, the following definitions and those of GB/T 2820.1 shall apply.
3.1
layman
a person who does not necessarily recognize potential danger resulting from electricity, moving parts or hot parts (see also Section 6); the layman has a lack of training, knowledge and experience, and has insufficient knowledge of the relevant regulations
3.2
close proximity
30mm space immediately around the operating and adjusting controls and carrying handles, including their whole movement range
3.3
power rating
electric power available at the outlets or sockets of the generator, expressed in kW at the rated frequency and the rated power factor
3.4
rated power
prime power according to GB/T 2820.1, 13.3.2 as assigned by the generating set manufacturer
Note: Due to the variable power sequence for this kind of low-power generating set, the average permissible power is 90% of the rated power.
3.5
thermal steady-state condition
state reached when the temperature rise of the generator does not vary by more than 2K over a period of 1h For electrical parts, see GB 755-2000, 2.11; for reciprocating internal combustion (RIC) engines, see GB/T 6072.1.
Note: Under normal test conditions, the RIC engine has first reached a steady-state condition before a set of measurements is taken. If not, the permissible deviations for the steady-state conditions of the RIC engine according to GB/T 6072.1 apply.
3.6
uncontrolled generator
where there is no load- and speed-dependent adjustment of excitation by an automatic voltage regulator for control of terminal voltage
Note: This includes generators with directly acting load current-dependent excitation devices (compounding).
3.7
automatic voltage regulator-controlled generator
where the terminal voltage is controlled by changing the excitation current by means of an automatic voltage regulator as a function of load and speed
Foreword i
1 Scope
2 Normative references
3 Definitions
4 Additional regulations and requirements
5 General notes on tests
6 Safety requirements and tests
7 Operating characteristics, power output, quality class and fuel consumption
8 Marking
9 Instruction manual - safety guide
Annex A (Informative) Bibliography
