1、 ANSI/AWWA C542-09 (First Edition) Electric Motor Actuators for Valves and Slide Gates AWWA Standard Effective date: Nov. 1, 2009. First edition approved by AWWA Board of Directors Jan. 25, 2009. Approved by American National Standards Institute Sept. 11, 2009. 6666 West Quincy Avenue Advocacy Denve
2、r, CO 80235-3098 Communications T 800.926.7337 Conferences www.awwa.org Education and TrainingScience and TechnologySections The Authoritative Resource on Safe Water SM Copyright 2009 American Water Works Association. All Rights Reserved.ii AWWA Standard This document is an American Water Works Asso
3、ciation (AWWA) standard. It is not a specification. AWWA standards describe mini- mum requirements and do not contain all of the engineering and administrative information normally contained in specifications. The AWWA standards usually contain options that must be evaluated by the user of the stand
4、ard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constitute endorse- ment of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is entirely voluntar
5、y. This standard does not supersede or take precedence over or displace any applicable law, regulation, or codes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry that the product de- scribed will provide satisfactory service. When AWWA
6、revises or withdraws this standard, an official notice of action will be placed on the first page of the classified advertising section of Journal AWWA. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official notice. American Nationa
7、l Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in
8、any respect preclude anyone, whether that person has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American Na- tional Standards are subject to periodic review, and users are cautioned to obtain th
9、e latest editions. Producers of goods made in conformity with an American National Standard are encouraged to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards. Ca u t
10、i o n n o t i C e : The American National Standards Institute (ANSI) approval date on the front cover of this standard indicates comple- tion of the ANSI approval process. This American National Standard may be revised or withdrawn at any time. ANSI procedures require that action be taken to reaffir
11、m, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 1003
12、6; (212) 642-4900. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information or retrieval system, except in the form of brief excerpts or quotations for review purposes,
13、without the written permission of the publisher. Copyright 2009 by American Water Works Association Printed in USA Copyright 2009 American Water Works Association. All Rights Reserved.iii Committee Personnel The AWWA Standards Subcommittee on Electric Actuators, which reviewed and approved this stan
14、dard, had the following personnel at the time of approval: Dave Montgomery, Chair General Interest Members W.H. Peffley, Crawford Murphy ANSI/AWWA C504, Rubber-Seated Butterfly Valves; ANSI/AWWA C507, Ball Valves, 6 In. Through 48 In. (150 mm Through 1,200 mm); ANSI/AWWA C509, Resilient-Seated Gate
15、Valves; ANSI/ AWWA C513, Open-Channel, Fabricated-Metal Slide Gates; ANSI/AWWA C517, Resilient-Seated Cast-Iron Eccentric Plug Valves; ANSI/AWWA C560, Cast-Iron Slide Gates; ANSI/AWWA C561, Fabricated Stainless Steel Slide Gates; and ANSI/ AWWA C563, Fabricated Composite Slide Gates. ANSI/AWWA C542
16、describes only the design and performance of those actuating devices applied to systems with operating pressures normally encountered in water * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Foreword Copyright 2009 American Water Works Association. All
17、 Rights Reserved.viii utilities. Purchasers of electric motor actuators should carefully review the requirements of this standard, evaluate the information to be provided to the manufacturer, and review the data to be supplied by the manufacturer. Such evaluations are essential to ensure proper appl
18、ication of the electric motor actuator for the intended use. ANSI/AWWA C542 references the National Electrical Manufacturers Association standard (NEMA), *which publishes standards and application guides for electrical equipment, enclosures, and components for various hazardous and nonhazardous serv
19、ice. Users of ANSI/AWWA C542 are cautioned to clearly specify the application requirements for the service. Such service may include depth and duration for submerged application, explosion-proof, and outdoor application. Specific requirements for controls and accessories and other items not covered
20、by this standard must be included in the purchase documents. Users of this standard should consult the National Electrical Code and local codes for circuit breakers/disconnect switch requirements. Use of This Standard. III. It is the responsibility of the user of an AWWA standard to determine that t
21、he products described in that standard are suitable for use in the particular application being considered. There are numerous lists throughout this standard describing various features of electric motor actuators. These lists are intended to be nonlimiting in nature. This standard includes certain
22、options that must be selected and specified by the purchaser to completely describe and obtain the actuator desired. In addition to the factors in Sec. III.A, Purchaser Options and Alternatives, other factors to be considered when sizing an actuator are described in Sec. 4.3, Actuator Sizing. The fo
23、llowing summarizes the options that must be selected and the data that should be covered in the purchase documents covering actuators manufactured in accordance with this standard: Purchaser Options and Alternatives. III.A. The following items should be provided by the purchaser: Standard usedthat i
24、s ANSI/AWWA C542, Electric Motor Actuators for 1. Valves and Slide Gates, of latest revision. The purchaser should note that corrosion-resistant metals must be carefully 2. selected and required to be compatible with the environmental conditions to which they are exposed in a given application (Sect
25、ion 3 item 3).* National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1752, Rosslyn, VA 22209. Copyright 2009 American Water Works Association. All Rights Reserved.ix Details of other federal, state or provincial, and local requirements 3. (Sec. 4.1). Modifications to manufact
26、urer delivery requirements (Sec. 4.2). 4. Valve and slide gate physical characteristics (Sec. 4.3). 5. Size and type of valve or slide gate to be operated by the actuator. a. Stem or shaft diameter at point of attachment. b. Rising stem, nonrising stem, or quarter turn. c. Pitch, lead, hand of threa
27、d, or keyway dimensions. d. Weight of gate and stem for slide gate. e. Seating/unseating torque in foot-pounds (newton-meters), maximum f. dynamic torque in foot-pounds (newton-meters), and when applicable, thrust in pounds (newtons) (Sec. 4.3.1.2). Maximum torque/thrust capability of the valve or s
28、lide gate g. (Sec. 4.3.2). Actuator orientation in relation to valve or slide gate. h. Actuator mounting: directly mounted or remotely mounted on a floor- i. stand and coupled with extension shafting. Lost-motion device requirement (Sec. 4.4.3). 6. Lubricant requirements (Sec. 4.4.5). 7. Direction o
29、f rotation of actuator handwheel to open valve or slide gate if 8. other than counterclockwise (Sec. 4.4.6). Supply voltage with maximum and minimum variation, phase, and frequency 9. (Sec. 4.4.7). Required type of service (Sec. 4.4.7). 10. Openclose. Frequency of operation and travel time duty cycl
30、e. a. Throttling/Modulating. Operating conditions, input signal to actuator, b. and starts per hour.Class 160 starts per hour, maximumClass 2100 starts per hour, maximumClass 3600 starts per hour, maximumClass 41,200 starts per hour, maximum Ambient temperature and humidity ranges. 1. Installation l
31、ocation: outdoors, indoors in a pit, in a vault, or 2. in any hazardous location if applicable, as defined by the National Electrical Code. If submergence is expected, give depth and length of time of submergence. Copyright 2009 American Water Works Association. All Rights Reserved.x Operating-cycle
32、 requirements. T ravel time or speed, in 3. seconds or inches per minute (centimeters per minute), from fully open to fully closed positions, or the reverse under all operating conditions. State plus/minus limits. The number of limit-switch contacts used for interlocking and position indi- 11. catio
33、n in the open, closed, and intermediate positions must be defined (Sec. 4.4.8). Electric motor enclosure requirements (Sec. 4.4.10). 12. Number of heaters, their locations, and their supply voltages if required 13. (Sec. 4.4.10). Position-indication requirements (Sec. 4.4.12). 14. Need for stem prot
34、ector (Sec. 4.4.13). 15. Control feature requirements (Sec. 4.4.14). 16. Digitally controlled communication requirements (Sec. 4.4.14). 17. Whether or not the controls are to be integral to the actuator, pedestal- 18. mounted, remotely mounted, or supplied by others (Sec. 4.4.14.1). Process-control
35、signal (Sec. 4.4.14.1 and 4.4.14.2). 19. For analog input, indicate signal (e.g., 4-20 mA) a. For contact closure, indicate voltage and source/dry contact. b. For digital serial communication, indicate digital communications pro- c. tocol (e.g., Device Net, Profibus, Modbus, etc.). Seal-in latching
36、contact requirements (Sec. 4.4.14.3.1). 20. If required, extra reversing-starter auxiliary contacts (Sec. 4.4.14.3.1). 21. A standard reversing contactor is controlled through the use of an integral 22. transformer that provides 120 V. If a transformer is not required, its deletion and the voltage r
37、equired must be specified (Sec. 4.4.14.3.2). If the control circuit does not use seal-contacts in push-button circuits 23. (Sec. 4.4.13.3.3). If push buttons are to be remote mounted, the requirements must be speci- 24. fied (Sec. 4.4.14.3.3). Remote enclosure requirements (Sec. 4.4.14.3.3). 25. Ope
38、nclose light indication requirements (Sec. 4.4.14.3.4). 26. Process control signal requirements (Sec. 4.4.14.4.4). 27. Number of feedback and auxiliary devices; if required, function, wattage, 28. and resistance (Sec. 4.4.14.5). Special service coating requirements (Sec. 4.5.1). 29. Request for certification of tests and copies of proof of design and perfor- 30. mance tests (Sec. 5.4). Copyright 2009 American Water Works Association. All Rights Reserved.
