1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 778 Motor-Operated Water Pumps STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHOR
2、IZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Motor-Operated Water Pumps, UL 778 Sixth Edition, Dated July 7, 2016 Summary of Topics This new edition of ANSI/UL 778 includes the following changes in requirements: 1. Additional Options for the Eva
3、luation of Electronic Circuits and Controls 2. Updated Requirements for Switches The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated April 8, 2016. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or
4、 transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tn
5、ess for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, 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 repres
6、entative 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 Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless
7、 from and against 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. JULY 7, 2016 UL 778 tr1UL COPYRIGHTED MATERIAL NOT AU
8、THORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 7, 2016 UL 778 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 7, 2016 1 UL 778 Standard for Motor-Operated Water Pumps First Edit
9、ion October, 1980 Second Edition October, 1991 Third Edition April, 1996 Fourth Edition December, 2002 Fifth Edition February, 2010 Sixth Edition July 7, 2016 This ANSI/UL Standard for Safety consists of the Sixth Edition. The most recent designation of ANSI/UL 778 as an American National Standard (
10、ANSI) occurred on July 7, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, or Title Page. 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 not invalidate the DoD adoptio
11、n. 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 by UL. Neither a printed no
12、r 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 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 778-2016UL COPYRIGHTED MATERIAL NOT AUTHOR
13、IZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 7, 2016 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 SUBMERSIBLE AND NON-SUBMERSIB
14、LE MOTOR-OPERATED PUMPS INTRODUCTION 1 Scope .8 2 Units of Measurement .8 3 Undated References 8 4 Denitions 9 5 Instructions Provided With the Pump .12 6 Safety Critical Functions 12 CONSTRUCTION 7 General .13 8 Component Specications 13 8.1 Components 13 8.2 Fuses 14 8.3 Fuseholders 14 8.4 Printed
15、 wiring boards 15 8.5 Quick-connect wire connectors 15 8.6 Terminal blocks .15 8.7 Wire connectors .16 8.8 Isolation devices 16 8.9 Switch mode power supply insulation system Triple-insulated magnet wire .17 9 Adhesives Used to Secure Parts .17 10 Electrical and Fire Enclosures 17 10.1 General .17 1
16、0.2 Enclosures of secondary circuits .22 11 Parts in Contact with Potable Water .22 12 Provision for Servicing .22 13 Mechanical Assembly .23 14 Protection Against Corrosion .23 15 Accessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts .26 16 Supply Connections .31 16.1 General
17、31 16.2 Terminal compartments .34 16.3 Field wiring terminals and leads 36 16.4 Identied terminals and leads 37 16.5 Strain relief 38 16.6 Bushings 38 16.7 Contractor pumps 38 16.8 Deep-well submersible pumps .39 16.9 Sump pumps and portable pumps 39 16.10 Cord-connected pumps 39 16.11 Fountain pump
18、s .41 16.12 Elevator hoistway sump pumps .41 17 Current-Carrying or Live Parts 41 18 Insulating Material 42 19 Internal Wiring 42 JULY 7, 2016 MOTOR-OPERATED WATER PUMPS - UL 778 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 19.1 Mechanic
19、al protection .42 19.2 Splices and connections 43 20 Spacings 44 20.1 At eld-wiring terminals .44 20.2 In a motor .44 20.3 Spacings other than in a motor or at eld-wiring terminals .44 21 Insulating Barriers 45 22 Clearance and Creepage Distances .46 23 Separation of Circuits .47 23.1 Separation bet
20、ween different internal wiring circuits (factory-installed conductors) 47 23.2 Separation between different eld wiring circuits (eld-installed conductors) .48 23.3 Separation between eld wiring circuits (eld-installed conductors) and internal wiring circuits (factory-installed conductors) 49 23.4 Se
21、gregation methods .49 23.5 Separation methods 50 24 Grounding .50 24.1 General .50 24.2 Bonding .52 24.3 Grounding identication .54 24.4 Double insulation .54 25 Motors .55 25.1 Construction .55 25.2 Overload protection .56 26 Overload-Protective Devices .57 27 Capacitors .59 28 Switches and Control
22、s .60 29 Line Voltage Submersible Pumps with Submersible Luminaires 62 PROTECTION AGAINST INJURY TO PERSONS 30 Sharp Edges .63 31 Materials .63 32 Stability 64 33 Polymeric Motor Supports .64 34 Parts Subject to Pressure 64 35 Pressure-Relief Devices .66 PERFORMANCE 36 Leakage Current Test .67 37 Le
23、akage Current Test Following Humidity Conditioning 67 38 Starting Current Test 67 39 Input Test 68 40 Temperature Test .68 40.1 General .68 40.2 Maximum normal load 73 41 Dielectric Voltage-Withstand Test .74 41.1 General .74 41.2 Secondary circuits 74 42 Oil Dielectric Voltage-Withstand Test 75 43
24、Resistance to Moisture Test 75 44 Submersion Test .78 45 Flooding Test 78 JULY 7, 2016 MOTOR-OPERATED WATER PUMPS - UL 778 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 46 Insulation Resistance Test .79 47 Test for Deterioration of Parts
25、Subject to Flexing .80 48 Test for Reliability of Parts Not Subject to Flexing 81 49 Metallic Coating Thickness Test 83 50 Switches and Controls Test 85 51 Strain Relief Tests 86 52 Operation Test .87 53 Abnormal Operation Test 87 53.1 Dry operation 87 53.2 Burnout test .88 53.3 Component breakdown
26、test .88 53.4 Low-voltage luminaire dry operation test 89 53.5 Transformer overload test .89 53.6 Switch mode power supply overload test 90 53.7 Secondary circuits tests .91 54 Permanence of Markings 93 MANUFACTURING AND PRODUCTION-LINE TESTS 55 Dielectric Voltage-Withstand Test .95 56 Grounding Con
27、tinuity Test .97 RATINGS 57 Details .97 MARKINGS 58 Details .98 59 Cautionary 102 INSTRUCTION MANUAL 60 General 103 61 Installation and Operating Instructions 103 62 Grounding Instructions .104 PART 2 PORTABLE FOUNTAIN PUMPS POWERED BY SEPARATE CLASS 2 SOURCES CONSTRUCTION 63 General 105 64 Power Su
28、pply .105 65 Low-Voltage Luminaires 106 PERFORMANCE 66 Input .106 RATING 67 General 106 JULY 7, 2016 MOTOR-OPERATED WATER PUMPS - UL 778 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKINGS 68 General 106 MANUFACTURING AND PRODUCTION-LI
29、NE TESTS 69 General 107 SUPPLEMENT SA - SUPPLEMENTAL REQUIREMENTS FOR PUMPS INTENDED FOR INSTALLATION IN ENVIRONMENTAL AIR HANDLING SPACES (Plenums) SA1 Scope SA1 SA2 Construction SA1 SA3 Markings .SA1 SA4 Installation and Operating Instructions SA2 SUPPLEMENT SB - UL 60335-1 BASED REQUIREMENTS FOR
30、THE EVALUATION OF ELECTRONIC CIRCUITS INTRODUCTION SB1 Scope SB1 SB2 General SB1 SB3 Glossary SB1 CONSTRUCTION SB4 Components SB2 SB4.1 Capacitors .SB2 SB4.2 Isolation devices SB2 SB4.3 Printed wiring boards SB3 SB4.4 Temperature sensing, thermistor devices .SB3 SB4.5 Transformers .SB3 SB5 Identicat
31、ion of Safety Critical Circuit Functions .SB4 SB5.1 General SB4 SB5.2 Protective electronic circuits SB4 SB5.3 Operating circuits that mitigate a dangerous malfunction of the appliance SB4 SB6 Evaluation of the Different Types of Electronic Circuits All Types of Circuits .SB4 SB7 Circuits That Provi
32、de Safety Critical Functions SB5 PERFORMANCE SB8 General Conditions for the Tests SB5 SB8.1 Details .SB5 SB8.2 Intentionally weak parts SB6 SB8.3 Test results determined by overcurrent protection operation SB6 SB9 Low-Power Circuits SB7 SB9.1 Low-power circuit determination .SB7 JULY 7, 2016 MOTOR-O
33、PERATED WATER PUMPS - UL 778 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SB10 Abnormal Operation and Fault Tests SB8 SB11 Programmable Component Reduced Supply Voltage Test SB10 SB12 Electromagnetic Compatibility (EMC) Requirements Immu
34、nity .SB10 MANUFACTURING AND PRODUCTION LINE TESTS SB13 General SB11 SUPPLEMENT SC - SECONDARY CIRCUITS EVALUATED TO NEC CLASS 2 DERIVED REQUIREMENTS CONSTRUCTION SC1 Secondary Circuits SC1 SC1.1 Components .SC1 SC1.2 General SC2 SC1.3 Evaluation of the different types of secondary circuits .SC5 PER
35、FORMANCE SC2 Component Breakdown Test SC9 SC3 Secondary Circuits Tests SC10 SC3.1 General .SC10 SC3.2 Limited energy secondary test .SC11 SC3.3 Limited voltage secondary test SC11 SC3.4 Protective impedance test .SC11 SC3.5 Printed wiring board abnormal operation test SC13 JULY 7, 2016 MOTOR-OPERATE
36、D WATER PUMPS - UL 778 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT 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 int
37、ended to be used in ordinary locations in accordance with the National Electrical Code, NFPA 70. 1.2 These requirements 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 p
38、ool equipment, therapeutic baths, and similar equipment, nor pumps covered by other individual requirements. These 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
39、 ammable uids. These would include but not be limited to gasoline, kerosene, oil, chemicals, and pesticides. 1.3 A pump not covered by any of the denitions in Denitions, Section 4, and a pump intended for use with liquids other than water, shall be evaluated on the basis of its compliance with the r
40、equirements in this standard, and further examination and tests required to determine whether 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. 2
41、 Units of Measurement 2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.2 Unless otherwise indicated, all voltage and current values mentioned in this standard are root-mean-square (rms). 3 Undated References 3.1 Any undate
42、d 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. JULY 7, 2016 MOTOR-OPERATED WATER PUMPS - UL 778 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT
43、 PERMISSION FROM UL 4 Denitions 4.1 For the purpose of these requirements, the following denitions apply. 4.2 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
44、risk of re. Examples would be units connected phase to phase or phase to neutral. 4.3 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
45、secondary circuits where electrical isolation is required to prevent an electric shock or between hazardous live parts and accessible parts. 4.4 CONDENSATE PUMP A pump intended for use with equipment to facilitate the removal of water condensate. 4.5 CORD-CONNECTED PUMP A pump intended to be connect
46、ed to a branch circuit supply by means of exible cord and an attachment plug. 4.6 DANGEROUS MALFUNCTION Unintended operation of the appliance that may impair safety. Operating Control functions whose failure would result in a Dangerous Malfunction would be considered Safety Critical Functions. Contr
47、ol functions whose failure might result in a Dangerous Malfunction would include: a) Unexpected operation of the appliance where the operation would result in risk of electric shock, re or mechanical hazard. b) Unattended energization of a heating appliance where the user has placed ammable material
48、s near the appliance based on the assumption the appliance would remain off. 4.7 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
49、supplies; and the like. 4.8 EFFLUENT PUMP A pump intended to pump liquid forms of waste mixed with water. 4.9 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 and/or hazardous materials. 4.10 ENCLOSURE, ELECTRICAL That part of the product that renders inaccessible all or any parts of the equipment that may otherwise present a risk of ele
