UL 778-2010 UL Standard for Safety Motor-Operated Water Pumps (Fifth Edition Reprint with Revisions Through and Including September 2 2015)《电动水泵》.pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 778 Motor-Operated Water PumpsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REP

2、RODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Motor-Operated Water Pumps, UL 778 Fifth Edition, Dated February 22, 2010 Summary of Topics This revision of ANSI/UL 778 includes the following changes in requirements: 1. Expand the Requirements for Additional Types of

3、Secondary Circuits 2. Delete the Denition of Industrial Use 3. Update Requirements for Units Intended to be Permanently Wired 4. Update Field Wiring Terminal Spacings Requirements 5. Add the Use of Insulating Barriers in Lieu of Spacings 6. Allow the Use of Standard UL 840 to Evaluate Clearance and

4、Creepage Distances 7. Add Requirements for Double Insulation for Non-Submersible Pumps 8. Revise the Requirements for Separation of Circuits 9. Allow the Use of Flag/Tag Type Markings on All Pumps Covered by UL 778 10. Expand the Requirements for Additional Types of Secondary Circuits 11. Update Req

5、uirements for Units that are Intended to be Permanently Wired 12. Allow the Use of Standard UL 840 to Evaluate Clearance and Creepage Distances Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requiremen

6、ts are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated Octob

7、er 11, 2013, November 15, 2013, and January 24, 2014. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides th

8、is Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prot

9、s, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this St

10、andard, regardless of the form of the claim. MAY 23, 2014 UL 778 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and agains

11、t any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those

12、 paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are precede

13、d by a SUPERSEDED REQUIREMENTS notice. MAY 23, 2014 UL 778 tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 22, 2010 (Title Page Reprinted: May 23, 2014) 1 UL 778 Standard for Motor-Operated Water Pumps First Edition October, 1980

14、 Second Edition October, 1991 Third Edition April, 1996 Fourth Edition December, 2002 Fifth Edition February 22, 2010 This ANSI/UL Standard for Safety consists of the Fifth Edition including revisions through May 23, 2014. The most recent designation of ANSI/UL 778 as an American National Standard (

15、ANSI) occurred on May 23, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 778 on March 11, 1991. The publication of revised pages or a new edition of this Standard will no

16、t invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted

17、 by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 778-2014UL COP

18、YRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 23, 2014 MOTOR-OPERATED WATER PUMPS - UL 778 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PART 1 ALL S

19、UBMERSIBLE AND NON-SUBMERSIBLE MOTOR-OPERATED PUMPS INTRODUCTION 1 Scope .5 2 General 5 2.1 Components .5 2.2 Units of measurement .6 2.3 Undated references .6 3 Denitions 6 4 Instructions Provided With the Pump .8A CONSTRUCTION 5 General 8A 5A Component Specications .8B 5A.1 Components 8B 5A.2 Fuse

20、s 9 5A.3 Fuseholders 9 5A.4 Printed wiring boards .10 5A.5 Quick-connect wire connectors 10 5A.6 Terminal blocks 10 5A.7 Wire connectors 10A 5A.8 Isolation devices 10A 5A.9 Switch mode power supply insulation system 10B 6 Adhesives Used to Secure Parts .10B 7 Enclosure 10B 7.1 General .10B 7.2 Enclo

21、sures of secondary circuits 14 8 Parts in Contact with Potable Water 14 9 Provision for Servicing 14 10 Mechanical Assembly 14A 11 Protection Against Corrosion .15 12 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts .18 13 Supply Connections .23 13.1 General 23 13.2 Termin

22、al compartments .26 13.3 Field wiring terminals and leads 26C 13.4 Identied terminals and leads 27 13.5 Strain relief 27 13.6 Bushings 28 13.7 Contractor pumps 28 13.8 Deep-well submersible pumps .28 13.9 Sump pumps and portable pumps 29 13.10 Cord-connected pumps 29 13.11 Fountain pumps .30 13.12 E

23、levator hoistway sump pumps 30A 14 Current-Carrying or Live Parts 31 15 Insulating Material 31 MAY 23, 2014 MOTOR-OPERATED WATER PUMPS - UL 778 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 16 Internal Wiring 32 16.1 Mechanical protectio

24、n .32 16.2 Splices and connections .32A 17 Spacings .32A 17.1 At eld-wiring terminals 32A 17.2 In a motor 32B 17.3 Spacings other than in a motor or at eld-wiring terminals .32B 17A Insulating Barriers .33 17B Clearance and Creepage Distances .34 17C Separation of Circuits .34A 17C.1 Separation betw

25、een different internal wiring circuits (factory-installed conductors) .34A 17C.2 Separation between different eld wiring circuits (eld-installed conductors) 34B 17C.3 Separation between eld wiring circuits (eld-installed conductors) and internal wiring circuits (factory-installed conductors) .34C 17

26、C.4 Segregation methods 34C 17C.5 Separation methods .34D 18 Grounding 34D 18.1 General 34D 18.2 Bonding .36 18.3 Grounding identication .38 18.4 Double insulation .39 19 Motors .39 19.1 Construction .39 19.2 Overload protection .40A 20 Overload-Protective Devices .41 21 Capacitors .42 22 Switches a

27、nd Controls .42A 23 Secondary Circuits 42B 23.1 Components .42B 23.2 General .43 23.3 Evaluation of the different types of secondary circuits .44B 24 Line Voltage Submersible Pumps with Low-Voltage Submersible Luminaires .44F PROTECTION AGAINST INJURY TO PERSONS 25 Sharp Edges .44G 26 Materials .45

28、27 Stability 45 28 Polymeric Motor Supports .45 29 Parts Subject to Pressure 46 30 Pressure-Relief Devices .47 PERFORMANCE 31 Leakage Current Test .48 32 Leakage Current Test Following Humidity Conditioning 49 33 Starting Current Test 49 34 Input Test 50 35 Temperature Test .50 35.1 General .50 35.2

29、 Maximum normal load 55 36 Dielectric Voltage-Withstand Test .56 36.1 General .56 MAY 23, 2014 MOTOR-OPERATED WATER PUMPS - UL 778 2BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 36.2 Secondary circuits 56 37 Oil Dielectric Voltage-Withsta

30、nd Test 57 38 Resistance to Moisture Test 57 39 Submersion Test .60 40 Flooding Test 60 41 Insulation Resistance Test .61 42 Test for Deterioration of Parts Subject to Flexing .62 43 Test for Reliability of Parts Not Subject to Flexing 63 44 Metallic Coating Thickness Test 65 45 Switches and Control

31、s Test 67 46 Strain Relief Tests 68 47 Operation Test .69 48 Abnormal Operation Test 69 48.1 Dry operation 69 48.2 Burnout test .70 48.3 Component breakdown test .70 48.4 Low-voltage luminaire dry operation test .70A 48.5 Transformer overload test 70B 48.6 Switch mode power supply overload test 70C

32、48.7 Secondary circuits tests .70C 48.8 Printed wiring board abnormal operation test .70F 49 Permanence of Markings .70F MANUFACTURING AND PRODUCTION-LINE TESTS 50 Dielectric Voltage-Withstand Test .73 51 Grounding Continuity Test .75 RATINGS 52 Details .75 MARKINGS 53 Details .76 54 Cautionary 78B

33、INSTRUCTION MANUAL 55 General 79 56 Installation and Operating Instructions .79 57 Grounding Instructions .80C PART 2 PORTABLE FOUNTAIN PUMPS POWERED BY SEPARATE CLASS 2 SOURCES CONSTRUCTION 58 General 80D 59 Power Supply .80D 60 Low-Voltage Luminaires .83 MAY 23, 2014 MOTOR-OPERATED WATER PUMPS - U

34、L 778 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 61 Input 83 RATING 62 General 83 MARKINGS 63 General 83 MANUFACTURING AND PRODUCTION-LINE TESTS 64 General 84 SUPPLEMENT SA - SUPPLEMENTAL REQUIREMENTS FOR PUMPS INTENDED FOR

35、 INSTALLATION IN ENVIRONMENTAL AIR HANDLING SPACES (Plenums) SA1 Scope SA1 SA2 Construction SA1 SA3 Markings .SA2 SA4 Installation and Operating Instructions SA2 MAY 23, 2014 MOTOR-OPERATED WATER PUMPS - UL 778 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT

36、PERMISSION FROM UL PART 1 ALL SUBMERSIBLE AND NON-SUBMERSIBLE MOTOR-OPERATED PUMPS INTRODUCTION 1 Scope 1.1 These requirements cover submersible and nonsubmersible motor-operated pumps intended to be used in ordinary locations in accordance with the National Electrical Code, NFPA 70. 1.2 These requi

37、rements do not cover pumps rated more than 600 volts, pumps using universal motors rated more than 250 volts, pumps for re protection service, pumps for use as or with swimming or wading pool equipment, therapeutic baths, and similar equipment, nor pumps covered by other individual requirements. The

38、se requirements do not cover pressure controls or pressure tanks that are intended for use in water or other liquid systems. These requirements do not cover pumps intended for corrosive or ammable uids. These would include but not be limited to gasoline, kerosene, oil, chemicals, and pesticides. 1.2

39、 revised May 25, 2012 1.3 A pump not covered by any of the denitions in Denitions, Section 3, and a pump intended for use with liquids other than water, shall be evaluated on the basis of its compliance with the requirements in this standard, and further examination and tests required to determine w

40、hether it is acceptable for the purpose. This would include but not be limited to pumps intended for water/glycol and similar mixtures intended for use in hot water radiant heating or thermal solar applications. 1.3 revised May 25, 2012 2 General 2.1 Components Section 2.1 revised and relocated as S

41、ection 5A.1 January 14, 2011 2.1.1 Revised and relocated as 5A.1.1 January 14, 2011. 2.1.2 Revised and relocated as 5A.1.2 January 14, 2011. 2.1.3 Relocated as 5A.1.3 January 14, 2011. 2.1.4 Relocated as 5A.1.4 January 14, 2011. MAY 25, 2012 MOTOR-OPERATED WATER PUMPS - UL 778 5UL COPYRIGHTED MATERI

42、AL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.2.2 Unless otherwise indicated, all voltage and current valu

43、es mentioned in this standard are root-mean-square (rms). 2.3 Undated references 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 3 Denitions 3.1 For the purpose of these

44、 requirements, the following denitions apply. 3.1.1 CAPACITOR, CLASS X Capacitor or RC unit of a type suitable for use in situations where failure of the capacitor or RC unit would not lead to danger of electrical shock but could result in a risk of re. Examples would be units connected phase to pha

45、se or phase to neutral. 3.1.1 added May 23, 2014 3.1.2 CAPACITOR, CLASS Y Capacitor or RC unit of a type suitable for use in situations where failure of the capacitor could lead to danger of electric shock. Examples would be capacitors connected across the primary and secondary circuits where electr

46、ical isolation is required to prevent an electric shock or between hazardous live parts and accessible parts. 3.1.2 added May 23, 2014 3.2 CONDENSATE PUMP A pump intended for use with equipment to facilitate the removal of water condensate. 3.3 CORD-CONNECTED PUMP A pump intended to be connected to

47、a branch circuit supply by means of exible cord and an attachment plug. 3.4 DEEP-WELL PUMP A permanently installed, submersible or nonsubmersible pump intended to be used for pumping water from a well for irrigation and other agricultural purposes; for domestic, municipal, and industrial water suppl

48、ies; and the like. 3.5 EFFLUENT PUMP A pump intended to pump liquid forms of waste mixed with water. 3.5.1 ELEVATOR HOISTWAY SUMP PUMP A submersible pump installed in elevator pits intended for the removal of accumulated (accidental) water. They are not intended for the removal of accumulated oils a

49、nd/or hazardous materials. 3.5.1 added May 25, 2012 3.6 Deleted May 23, 2014. 3.6.1 ENCLOSURE, ELECTRICAL That part of the product that renders inaccessible all or any parts of the equipment that may otherwise present a risk of electric shock. 3.6.1 added May 23, 2014 MAY 23, 2014 MOTOR-OPERATED WATER PUMPS - UL 778 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.6.2 ENCLOSURE, FIRE That part of the product that retards p