ANSI EP364.4-2013 Installation and Maintenance of Farm Standby Electric Power.pdf

1、 ANSI/ASAE EP364.4 FEB2013 Installation and Maintenance of Farm Standby Electric Power American Society of Agricultural and Biological Engineers ASABE is a professional and technical organization, of members worldwide, who are dedicated to advancement of engineering applicable to agricultural, food,

2、 and biological systems. ASABE Standards are consensus documents developed and adopted by the American Society of Agricultural and Biological Engineers to meet standardization needs within the scope of the Society; principally agricultural field equipment, farmstead equipment, structures, soil and w

3、ater resource management, turf and landscape equipment, forest engineering, food and process engineering, electric power applications, plant and animal environment, and waste management. NOTE: ASABE Standards, Engineering Practices, and Data are informational and advisory only. Their use by anyone e

4、ngaged in industry or trade is entirely voluntary. The ASABE assumes no responsibility for results attributable to the application of ASABE Standards, Engineering Practices, and Data. Conformity does not ensure compliance with applicable ordinances, laws and regulations. Prospective users are respon

5、sible for protecting themselves against liability for infringement of patents. ASABE Standards, Engineering Practices, and Data initially approved prior to the society name change in July of 2005 are designated as “ASAE”, regardless of the revision approval date. Newly developed Standards, Engineeri

6、ng Practices and Data approved after July of 2005 are designated as “ASABE”. Standards designated as “ANSI” are American National Standards as are all ISO adoptions published by ASABE. Adoption as an American National Standard requires verification by ANSI that the requirements for due process, cons

7、ensus, and other criteria for approval have been met by ASABE. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but

8、 not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. CAUTION NOTICE: ASABE and ANSI standards may be revised or withdrawn at any time. Additionally, procedures of ASABE require that action be taken pe

9、riodically to reaffirm, revise, or withdraw each standard. Copyright American Society of Agricultural and Biological Engineers. All rights reserved. ASABE, 2950 Niles Road, St. Joseph, Ml 49085-9659, USA, phone 269-429-0300, fax 269-429-3852, hqasabe.org ANSI/ASAE EP364.4 FEB2013 Copyright American

10、Society of Agricultural and Biological Engineers 1 ANSI/ASAE EP364.4 FEB2013 Revision approved February 2013 as an American National Standard Installation and Maintenance of Farm Standby Electric Power Corresponds to standards published by the Electrical Generating Systems Association; developed by

11、the ASAE Standby Electric Power Committee; approved by the ASAE Electric Power and Processing Division Standards Committee; adopted by ASAE as a Recommendation December 1973; reclassified as an Engineering Practice December 1977; reconfirmed December 1978, December 1983, December 1988; revised edito

12、rially July 1989; revised by the Agricultural Wiring and Energy Application Committee; approved by the ASAE Information and Electrical Technologies Division Standards Committee February 1993; approved as an American National Standard August 1993; revised August 1998; revision approved by ANSI March

13、1999;reaffirmed by ASAE and ANSI February 2003; revised November 2006; revision approved by ANSI December 2006; reaffirmed by ASABE and ANSI January 2012, revised February 2013; revision approved by ANSI February 2013. Keywords: Definition, Electric, Generation, Safety, Standby, Wiring 1 Purpose and

14、 Scope 1.1 The purpose of this Engineering Practice is to provide information to assist installers, maintenance personnel, operators and others in the proper installation, operation, and maintenance of farm standby electrical systems. 1.2 The scope of this Engineering Practice covers both engine-dri

15、ven and tractor-driven generators for farm standby electrical power service as defined in EGSA-101G, EGSA-101S, and EGSA-101P. The terms generator and alternator may be used interchangeably in this Engineering Practice. 2 Normative References The following standards contain provisions which, through

16、 reference in this text, constitute provisions of this Engineering Practice. The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies unless noted. For undated references, the latest approved edition of the refere

17、nced document (including any amendments) applies. ANSI/ASAE S493, Guarding for Agricultural Equipment ASAE S207, Operating Requirements for Tractors and Power Take-Off Driven Implements ASAE S318, Safety for Agricultural Field Equipment EGSA 101G, Glossary of Electrical and Mechanical Terminology an

18、d Definitions EGSA 101P, Performance Standard; For Engine Driven Generator Sets EGSA 101S, Guideline Specifications for Engine Driven Generator Sets; Emergency and Standby NFPA 30, Flammable and Combustible Liquids Code NFPA 31, Standard for the Installation of Oil-Burning Equipment ANSI/ASAE EP364.

19、4 FEB2013 Copyright American Society of Agricultural and Biological Engineers 2 NFPA 54 (ANSI Z223.1), National Fuel Code NFPA 58, Liquefied Petroleum Gas Code NFPA 70, National Electrical Code UL 1008, Transfer Switch Equipment CSA B139, Installation Code for Oil Burning Equipment CSA B140-0, Gener

20、al Requirements for Oil Burning Equipment CSA C22.1, Canadian Electrical Code, Part 1 CSA C22.2 No.100, Motors and Generators CSA C22.2 No. 182.3, Special Use Attachment Plugs, Receptacles, and Connectors 3 Definitions 3.1 alternator: A device for converting mechanical energy into electrical energy

21、in the form of alternating current. NOTE: The terms “generator” and “alternator” are used interchangeably in this standard. 3.2 electric utility: An enterprise engaged in the production and/or distribution and sale of electricity for use by the public. 3.3 engine-driven generator: An electric genera

22、tor so constructed that its rotor is driven by an engine dedicated solely to the generator. This is also referred to as a generator set. 3.4 generator: A general name for a device that converts mechanical energy into electrical energy. The electrical energy may be direct current, DC, or alternating

23、current, AC. An AC generator may be called an alternator. 3.5 PTO: Abbreviation used for power take-off. 3.6 standby power: The power to be delivered by a generator during periods when there is an outage of utility or prime power sources or when these sources provide power outside the acceptable lim

24、its of quality or capacity. 3.7 tractor-driven generator: An electric generator so constructed that its rotor is driven by the PTO of a farm tractor through a PTO speed changer and drive shaft. 3.8 transfer switch: An automatic or manual device for transferring one or more conductor connections from

25、 one power source to another. 3.9 weatherproof: Constructed or protected so that exposure to the weather will not interfere with successful operation of the equipment. 3.10 Additional terminology and definitions are included in EGSA 101G. ANSI/ASAE EP364.4 FEB2013 Copyright American Society of Agric

26、ultural and Biological Engineers 3 4 Installation 4.1 Delivery Inspection. The generator should be carefully inspected on delivery for evidence of possible damage. The damage should either be corrected or deemed to be inconsequential by the dealer before the generator is operated. 4.2 Review of Inst

27、allation and Operators Manual. The manufacturers installation and operators manual should be thoroughly reviewed before attempting to install the standby generating system, whether it is an engine-driven or a tractor-driven type. 4.3 Location 4.3.1 The generator should be located in an atmosphere th

28、at is free from excessive dust, snow, or other wind-blown particles, high and/or low temperatures, and corrosive fumes. 4.3.2 Allowance should be made for a minimum clearance of 0.9 m (3 ft) around the set for service accessibility. 4.4 Mounting 4.4.1 Permanently installed, engine-driven electric ge

29、nerators should be mounted on a concrete base in accordance with the manufacturers instructions. 4.4.2 Vibration dampening pads should be placed between the skid, or mounting base, and the floor or concrete base to minimize the transfer of vibration to other equipment. 4.4.3 Tractor-driven generator

30、s are normally either stationary mounted or mobile mounted on a trailer or with a three-point hitch. 4.4.3.1 Stationary mounting should follow the manufacturers recommendations of mounting on concrete pads. 4.4.3.2 In the event of mobile mounting, such as a trailer or a three-point hitch, the mounti

31、ng should be of sufficient size and stability to withstand pulling over rough terrain and to withstand torque stresses experienced when full loads are applied to the generator through the power take-off driveline and input connection. 4.4.3.3 Alternators should be mounted on the trailer or three-poi

32、nt hitch such that power drive lines are in good alignment. 4.5 Safety Provisions. The power take-off and power take-off drive lines for PTO tractor-driven generators should conform to safety provisions of ASAE S318 and ASAE S207. 4.6 Ventilation for Engine-Driven Generators. It is imperative that t

33、he engine and generator have an adequate supply of air for combustion and cooling. 4.6.1 Ductwork should be used when necessary from the radiator to the outlet to prevent hot air recirculation. 4.6.2 There should be a flexible ductwork section at any connection to the generator. 4.6.3 The air inlet

34、must be larger in size than the air outlet. The air inlet should be two times the size of the radiator frontal area or as recommended by the manufacturer. 4.7 Exhaust. When an engine-driven generator is installed inside a building or other enclosure, means shall be provided for exhausting the gases

35、from the engine exhaust system out of the building or enclosure. 4.7.1 Where the exhaust pipe passes through a wall of combustible material, the wall shall be shielded by a metal thimble at least 305 mm (12 in.) larger in diameter than the exhaust pipe. ANSI/ASAE EP364.4 FEB2013 Copyright American S

36、ociety of Agricultural and Biological Engineers 4 4.7.2 The end of the exhaust pipe should be equipped with a rain cap, and should be located a suitable distance away from the air inlet of the engine so that exhaust gases cannot be drawn back through the air inlet. 4.7.3 Connection between the exhau

37、st pipe and the engine shall be flexible to prevent breakage. 4.7.4 Exhaust piping should be as short as possible with minimum bends and restrictions, and large enough to prevent back pressures higher than those recommended by the engine manufacturer. 4.7.5 A drain cock shall be installed at the low

38、est point in the exhaust piping system for draining any moisture accumulations as a result of condensation. NOTE: Frequency of draining depends on time and extent of use. 4.8 Fuel. Engine-driven generator sets shall be provided with fuel lines and fuel equipment to comply with the following standard

39、s: In the USA, NFPA 30, NFPA 31, NFPA 54, and NFPA 58. For Canada, comply with CAN/CSA-B139, and CAN/CSA-B140.0. The fuel lines from the natural gas meter to the fuel inlet of the engine shall be sized and installed in accordance with ANSI Z83.1. NOTE: Fueling shall be carried out only after the eng

40、ine is switched off. 4.9 Electrical 4.9.1 Electrical wiring shall be in accordance with the recommendations of the manufacturers and comply with local regulations, (in the USA, NFPA 70); (in Canada the Canadian Electrical Code, Part 1) and other standards where applicable. 4.9.2 Electric generators

41、on engine or tractor-driven units shall be grounded in accordance with Article 250, NFPA 70. 4.9.3 Automatic transfer switches or manual transfer switches shall be approved by an independent testing agency (i.e., UL 1008) and installed so the generator and the electric utilitys power cannot be energ

42、ized at the same time. Transfer switches shall be installed in accordance with Article 702, NFPA 70. 4.9.4 Safety Requirements for Electrical Connection. The installer, maintenance personnel and operators shall ensure that the electrical connections to the generator meet all the following requiremen

43、ts. 4.9.4.1 Compatibility of Plug and Generator. The plug and generator receptacle shall be of like configurations to ensure compatibility with each other during the mating operation. Both the plug and the generator receptacle shall have the same wiring order. The polarization shall be keyed or of s

44、uch design that polarization will not be defeated by improper assembly during installation. 4.9.4.2 Exposed Contacts 4.9.4.2.1 Mating plug and connector shall not have exposed live contacts during engagement or withdrawal (In Canada, as required in, and tested in accordance with, CSA Standard C22.2

45、No. 182.3). 4.9.4.2.2 As an alternate to 4.9.4.2.1, mating connectors which have exposed live contacts after withdrawal of the plug shall have a cover which is: a) spring loaded for self-closing the live parts of the connector after the plug is removed, b) secured on the opposite end of the spring b

46、y means requiring a tool or key to remove the cover when the connector is not in use, and, c) a warning sign alerting the user about the live parts under the cover and to secure the cover with the tool or key after the plug is withdrawn. ANSI/ASAE EP364.4 FEB2013 Copyright American Society of Agricu

47、ltural and Biological Engineers 5 4.9.4.3 Weatherproof. Both connector and plug shall be of weatherproof type (In Canada meeting the requirements of CSA Standard C22.2 No. 182.3), unless the generator is specifically marked for the use in weatherproof area only. The connector shall be located in 3R

48、rated enclosure (In Canada, as per Table 65 of the Canadian Electrical Code, Part 1), if the generator is not installed in weatherproof area. 4.9.4.4 Caution Mark. A plug, connector or receptacle marked to indicate that it is not suitable to interrupt current shall not be used to interrupt current t

49、o the stand-by electric power system. 4.9.4.5 Strain Relief. Extra-hard-usage service cord or portable power cable shall be used to connect a stand-by electric power system to the fixed wiring. An approved method of strain relief to prevent transmission of strain to the terminal connections shall be provided for all cords and portable power cables. NOTE: In addition to requirements above, the installer shall ensure that the phases and the neutral of the generator power supply to the farm building are mated with the corresponding phases a