ANSI ASABE S362.2-1983 Wiring and Equipment for Electrically Driven or Controlled Irrigation Machines.pdf

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1、 ANSI/ASAE S362.2 JAN1983ED (R2014) Wiring and Equipment for Electrically Driven or Controlled Irrigation Machines American Society of Agricultural and Biological Engineers ASABE is a professional and technical organization, of members worldwide, who are dedicated to advancement of engineering appli

2、cable to agricultural, food, 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 equip

3、ment, structures, soil and water 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

4、 only. Their use by anyone engaged 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.

5、Prospective users are responsible 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 de

6、veloped Standards, Engineering 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 requir

7、ements for due process, consensus, 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

8、 than a simple majority, but 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 req

9、uire that action be taken periodically 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 S362.2

10、JAN1983ED (R2014) Copyright American Society of Agricultural and Biological Engineers 1 ANSI/ASAE S362.2 JAN1983ED (R2014) Approved April 1988; reaffirmed January 2015 as an American National Standard Wiring and Equipment for Electrically Driven or Controlled Irrigation Machines Developed by a stand

11、ards subcommittee of the ASAE Agricultural Wiring and Utilization Committee; approved by the Electric Power and Processing Division Standards Committee; adopted by ASAE June 1973; revised April 1978, January 1983; reconfirmed December 1987; approved as an American National Standard April 1988; revis

12、ed editorially July 1989; reaffirmed by ASAE December 1992; reaffirmed by ANSI July 1993; revised editorially June 1997; reaffirmed by ASAE December 1997, December 1998; reaffirmed by ANSI December 1999; reaffirmed by ASAE December 1999; revised editorially March 2000; reaffirmed by ASAE February 20

13、05; reaffirmed by ANSI March 2005; reaffirmed by ASABE December 2009; reaffirmed by ANSI January2010; reaffirmed and Editorial revision December 2014; reaffirmed by ANSI January 2015. Keywords: Definitions, Electrical, Irrigation, Safety, Safety signs, Sprinkler, Wiring 1 Purpose and Scope 1.1 This

14、Standard provides detailed information for the application of electrical apparatus to electrically driven or controlled irrigation machines. The purpose of this Standard is to improve the degree of personal safety in operation and application of products and materials under a reasonable range of con

15、ditions. 1.2 This Standard covers all electrical equipment, apparatus, components, and wiring necessary for electrically driven or controlled irrigation machines, from the point of connection of electric power to the machine. 1.3 Provisions of this Standard apply to electrical equipment for use on c

16、ircuits operating at voltages between 30 and 600 V. 2 Definitions and Glossary of Terms 2.1 For purposes of this Standard the following definitions shall apply: 2.1.1 irrigation machine: (Hereinafter called “machine.”) An electrically driven or controlled machine, not portable by hand, used primaril

17、y to transport and distribute water for agricultural purposes. 2.1.2 power conductors: Those conductors that carry current to provide electric power from the machine disconnect to the drive motors. 2.1.3 control conductors: Those conductors that carry current to control devices necessary for movemen

18、t of the machine. 2.1.4 auxiliary conductors: Those conductors used to carry current to devices that are not required for the movement of the machine. 2.1.5 main control panel: An enclosure containing the main controller and other control devices necessary for starting and stopping the machine. ANSI

19、/ASAE S362.2 JAN1983ED (R2014) Copyright American Society of Agricultural and Biological Engineers 2 2.1.6 auxiliary panels: Enclosed assemblies of auxiliary control devices for the machine, such as motor controllers, relays, switches, and transformers, but not including the main controller or main

20、start and stop function switches. A junction box is not an auxiliary panel. 2.2 The following glossary of terms applies to this Standard: 2.2.1 bonded: A reliable connection to assure the required electrical conductivity between metal parts required to be electrically connected. 2.2.2 collector ring

21、: An assembly of slip rings for transferring electrical energy from a stationary to a rotating member. 2.2.3 front-mounted: Mounting of replaceable devices so that they may be individually replaced from the front of an enclosure without removing subpanels or numerous other devices, gaining access to

22、 hidden nuts, or removing a rear enclosure cover. 2.2.4 front-wired: Mounting of replaceable devices so that they may be individually wired from the front of an enclosure without removing the device, subpanels, or rear enclosure covers to gain access to electrical connections. 2.2.5 grounded: Connec

23、ted to earth or to some conducting body which serves in place of earth. 2.2.6 grounded conductor: A circuit conductor which is intentionally grounded. 2.2.7 grounding conductor: The conductor used to connect noncurrent-carrying metal parts of a machine to a service-grounded conductor and/or a ground

24、ing electrode conductor. 2.2.8 machine disconnect: A disconnecting means at the point of connection of electrical power to the machine. 2.2.9 metal-to-metal: Attachment of metal parts to the machine with bolts and screws to provide an adequate contact for bonding purposes where all paint and dirt ha

25、ve been removed from under the bearing surface area of bolt or screw heads. 2.2.10 readily accessible: Capable of being opened quickly for maintenance, repair, or inspection. May be fastened by latches or held by mechanical interlocks or similar apparatus. A cover firmly attached by two or more scre

26、ws is not considered readily accessible. 2.2.11 weatherproof: Constructed or protected so that exposure to the environment will not interfere with successful operation. 3 General Requirements 3.1 Disconnecting means 3.1.1 A machine disconnect with overcurrent protection capable of being locked in th

27、e OFF position shall be provided at the point of connection of electric power to the machine. 3.2 Enclosures 3.2.1 All enclosures shall be constructed to meet at least the minimum standards for a National Electrical Manufacturers Association Type 3R enclosure as specified in NEMA Standard IS1.1, Con

28、trols and Systems. 3.2.2 Entrances into, exits from, and penetrations of the enclosure shall be made in such a manner as to reduce the possibility of the collection of water or contaminants at the point of connection and to preserve the minimum NEMA rating of the enclosure as specified in paragraph

29、3.2.1. ANSI/ASAE S362.2 JAN1983ED (R2014) Copyright American Society of Agricultural and Biological Engineers 3 3.2.3 Dimensions of enclosures shall not be less than the maximum dimensions of the enclosed equipment plus the required electrical clearances as specified in National Fire Protection Asso

30、ciation Standard No. 70, National Electrical Code (American National Standard, C1). 3.2.4 Where used, gaskets shall be securely attached to one of the mating parts. 3.2.5 Enclosures should be mounted in such a manner as to minimize the possibility of subsequent physical damage to the enclosure. 3.3

31、Interlocking 3.3.1 Where personal hazard or property damage may be caused by the failure of any one device to function properly, protective interlocks shall be provided. Where practicable, these interlocks shall interrupt all operations, providing such interruption will not create a hazardous condit

32、ion. 3.4 Automatic or remote starting 3.4.1 Automatic restarting shall be connected in such a manner that restarting will occur only on resumption of full single-phase or three-phase voltage, as needed, following a power outage. 3.4.1.1 Automatic restarting shall not be construed to encompass the fu

33、nctions of a device or circuit designed for reversing the direction of travel of the machine at a preset point or points. 3.4.2 Machines equipped with automatic restarting or remote starting shall have affixed to the machine a safety sign indicating that the machine can start automatically. 3.4.2.1

34、This safety sign shall be affixed to the machine disconnect. It shall also be affixed to the main control panel if the machine disconnect is not part of or adjacent to the main control panel. 3.4.2.2 Wording and size of this sign are specified in Section 10Safety Signs. 3.5 All conductors within an

35、enclosure shall be clearly marked or color coded for identification as specified in paragraph 8.6. 3.6 Transformers shall be of the isolated type with proper overcurrent protection for the transformer, conductors, or control devices it serves. 3.7 Terminal blocks or strips shall be sized to accommod

36、ate the number and size of the conductors terminated or connected thereto and shall be rated for the voltage and current transmitted on the connected or terminated conductors. 3.8 Control devices such as relays, limit switches, and similar equipment shall be suitable for the application and shall be

37、 capable of handling the voltage and current imposed on or through the devices. 3.9 Panel-mounted devices shall be front-mounted and front-wired for convenient servicing. 3.10 Current ratings 3.10.1 Machines. Where a machine is multimotored and individual motors are controlled by alignment switches

38、or similar devices, and where intermittent duty is inherent, the equivalent continuous-current rating and the peak-current rating shall be determined as follows: 3.10.1.1 The equivalent continuous-current rating shall be calculated as 125% of the full-load current rating of the largest motor plus a

39、quantity equal to the sum of the full-load current ratings of all remaining motors multiplied by the maximum percent duty cycle at which the remaining motors can continuously operate. 3.10.1.2 The peak-current demand shall be equal to the sum of the locked-rotor current of the two largest motors plu

40、s 100% of the full-load current ratings of all other motors on the circuit. ANSI/ASAE S362.2 JAN1983ED (R2014) Copyright American Society of Agricultural and Biological Engineers 4 3.10.2 Center pivot machines. Where a machine is multimotored and individual motors are controlled by alignment switche

41、s or similar devices, where the machine operates in a circle, and where intermittent duty is inherent, the continuous-current rating and the peak-current rating shall be determined as follows: 3.10.2.1 The equivalent continuous-current rating shall be calculated as 125% of the full-load current rati

42、ng of the largest motor plus 60% of the sum of the full-load current ratings of the remaining motors. 3.10.2.2 The peak-current rating shall be calculated as two times the locked-rotor current of the largest motor plus 80% of the sum of the full-load current ratings of the remaining motors. 4 Ground

43、ing 4.1 A grounding conductor used for no other purposes than machine grounding shall be provided. 4.1.1 The grounding conductor shall be bonded to the machine within the main control panel enclosure and each auxiliary panel enclosure. 4.1.2 The ground conductor shall be within the same sheath, jack

44、et, or conduit as the power, control, or auxiliary conductors. 4.1.3 The grounding conductor may be bare or insulated as specified in paragraph 8.6.2.1. 4.1.4 Metallic sheath of any cable or conduit shall not be used as the primary grounding conductor. 4.2 Metal-to-metal contact with a part which is

45、 bonded to the grounding conductor and the noncurrent-carrying parts of the machine shall be considered as an adequate grounding path. 4.3 Metallic sheath of cable or conduit, where used, shall be grounded. 4.4 External metal parts which could become inadvertently energized shall be grounded. 4.5 Mo

46、tor frames shall be bonded to the grounding conductor. 4.6 Metal frames of devices such as switches, solenoids, and junction boxes shall be bonded to the grounding conductor or to the noncurrent carrying metal parts of the machine. 4.7 The grounding conductor shall not have less ampacity than its as

47、sociated power conductors. 4.7.1 When there is a reduction of conductor size because of the use of an interposing relay, controller, or similar device, the grounding conductor may also be reduced to the same size as the power, control, or auxiliary conductors originating at the interposing device. 4

48、.8 Where a machine has a stationary point, such machine shall include provision for the connection of the machine-grounding conductor to the grounding-electrode conductor. Proper installation of the grounding-electrode conductor shall complete an electrical path from the machine-grounding conductor

49、to the grounding electrode. 4.8.1 A prominently displayed, durable sign shall be permanently affixed to the main control panel which indicates the need for proper grounding. 4.8.2 The installation and operating instructions for the machine shall include specific recommendations for connecting or installing the grounding electrode in accordance with the applicable sections of the NFPA Standard No. 70, National Electrical Code. 4.9 A common connection point for all grounding conductors shall be provided. ANSI/ASAE S362.2 JAN1983ED (R2014) Copyright American S