UL 1077-2015 UL Standard for Safety Supplementary Protectors for Use in Electrical Equipment (Seventh Edition Reprint with revisions through and including August 18 2016).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1077 Supplementary Protectors for Use in Electrical EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL

2、 NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Supplementary Protectors for Use in Electrical Equipment, UL 1077 Seventh Edition, Dated June 25, 2015 Summary of Topics This new edition of ANSI/UL 1077 incorporates the following: 1. Addi

3、tion of Requirements for Field Wiring Terminals for Supplementary Protectors 2. Clarication of the Test Method for the Overvoltage Test for Undervoltage Protectors/Accessories 3. Revision of the Requirement for the Test Conductor Length 4. Addition of Requirements for DC Rated Protectors with Poles

4、Wired in Series 5. Additional Requirements for Other Protective Types and Accessories 6. Editorial Corrections The revised requirements are substantially in accordance with Proposal(s) on this subject dated February 13, 2015. All rights reserved. No part of this publication may be reproduced, stored

5、 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 this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warrantie

6、s 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 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

7、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 Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indem

8、nify, and hold UL harmless 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. JUNE 25, 2015 UL 1077 tr1UL

9、 COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 25, 2015 UL 1077 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 25, 2015 1 UL 1077 Standard for Suppl

10、ementary Protectors for Use in Electrical Equipment First Edition September, 1975 Second Edition July, 1981 Third Edition January, 1987 Fourth Edition April, 1994 Fifth Edition June, 1999 Sixth Edition July, 2005 Seventh Edition June 25, 2015 This ANSI/UL Standard for Safety consists of the Seventh

11、edition. The most recent designation of ANSI/UL 1077 as an American National Standard (ANSI) occurred on June 25, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to

12、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 nor electronic copy of a Standard should be altered in any way. All of ULs Standards and

13、all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 1077-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 25, 2015

14、 SUPPLEMENTARY PROTECTORS FOR USE IN ELECTRICAL EQUIPMENT - UL 1077 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Glossary .5 3 Components 7 4 Units of Measurement .7 5 Undated Refer

15、ences 7 CONSTRUCTION 6 General 7 7 Corrosion Protection .8 8 Insulating Materials 8 9 Current-Carrying Parts .9 10 Wiring Terminals 10 11 Pressure Wire Connectors .12 12 Wiring Leads .12 13 Wire-Binding Screw Terminals 13 14 Mounting 13 15 Operating Mechanism .13 16 Spacings 14 17 Clearance and Cree

16、page Distances .15 PERFORMANCE 18 General 17 OVERCURRENT PROTECTORS 19 Calibration .20 20 Temperature .21 21 Overload Test 24 22 Endurance .29 23 Dielectric Strength and Voltage-Withstand Tests 30 23.1 Dielectric strength test 30 23.2 Voltage-withstand test 30 23.3 Details 30 24 Recalibration .31 25

17、 Short Circuit 31 26 Strain Relief 38 ACCESSORIES 27 All Accessories .39 27.1 General .39 27.2 Installation .39 27.3 Mounting 40 27.4 Field wiring 40 27.5 Strain relief 40 27.6 Spacings 41 JUNE 25, 2015 SUPPLEMENTARY PROTECTORS FOR USE IN ELECTRICAL EQUIPMENT - UL 1077 3UL COPYRIGHTED MATERIAL NOT A

18、UTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 28 Auxiliary Switches 41 28.1 General .41 28.2 Temperature .42 28.3 Overload 42 28.4 Endurance 43 28.5 Dielectric voltage-withstand 44 29 Overvoltage-Trip Release Devices 44 30 Overvoltage-Trip Appliance Protectors .45 30.

19、1 General .45 30.2 Temperature .45 30.3 Overvoltage .45 30.4 Operation .45 30.5 Overload 45 30.6 Endurance 45 30.7 Dielectric voltage-withstand 46 31 Undervoltage-Trip Protectors .46 31.1 General .46 31.2 Temperature .46 31.3 Overvoltage .46 31.4 Operation .46 31.5 Overload 46 31.6 Endurance 47 31.7

20、 Dielectric voltage-withstand 47 32 Shunt-Trip Protectors 47 32.1 General .47 32.2 Temperature .47 32.3 Overvoltage .47 32.4 Undervoltage 47 32.5 Overload 47 32.6 Endurance 48 32.7 Dielectric voltage-withstand 48 RATINGS 33 Details .48 MARKING 34 Specics .48 APPENDIX A Standards for ComponentsA1 APP

21、ENDIX B Examples of Valid U and C Code Combinations JUNE 25, 2015 SUPPLEMENTARY PROTECTORS FOR USE IN ELECTRICAL EQUIPMENT - UL 1077 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements apply to supple

22、mentary protectors intended for use as overcurrent, or over- or under-voltage protection within an appliance or other electrical equipment where branch circuit overcurrent protection is already provided, or is not required. Compliance with the following is acceptable for use as a component of an end

23、 product. 1.2 The acceptability of a protector in any particular application depends upon its ability to be used continuously under the conditions that prevail in actual service. Accordingly, for a particular application a protector may be affected by the requirements for the equipment it is used in

24、, and it may be necessary to additionally evaluate features or performance characteristics that are not specied in this Standard. 1.3 This Standard also covers accessory devices that may be installed in or on the protector to perform a secondary function. Examples of accessories are alarm and auxili

25、ary switches. 1.4 Devices which ensure a manual restart due to the complete loss of voltage are covered by the Standard for Solid-State Controls for Appliances, UL 244A. Compliance with the Standard for Automatic Electrical Controls for Household and Similar Use, Part 1: General Requirements, UL 607

26、30-1, and/or the applicable Part 2 standard from the UL 60730 series fullls these requirements. 1.5 Automatic reset devices designed to open the circuit automatically on a predetermined value of time versus current or voltage within an appliance or other electrical equipment are covered by the Stand

27、ard for Solid-State Controls for Appliances, UL 244A. Compliance with the Standard for Automatic Electrical Controls for Household and Similar Use, Part 1: General Requirements, UL 60730-1, and/or the applicable Part 2 standard from the UL 60730 series fullls these requirements. 2 Glossary 2.1 AUXIL

28、IARY SWITCH A switch that is mechanically operated by the main contact switching mechanism. 2.2 FIELD WIRING TERMINALS Any terminal to which a supply or other wire can be connected by an installer in the eld, unless the wire is provided as part of the appliance or other electrical equipment and a pr

29、essure terminal connector, soldering lug, soldered loop, crimped eyelet, or other means for making the connection is factory-assembled to the wire. 2.3 MAGNETIC TRIP PROTECTOR A protector that is caused to trip by current through a magnet coil. 2.4 OVERCURRENT-TRIP PROTECTOR A thermal or magnetic tr

30、ip protector intended to trip the contact circuit when the current through the thermal element or trip coil, which is in series with contact circuit, exceeds a predetermined value. 2.5 OVERVOLTAGE-TRIP PROTECTOR A magnetic trip protector intended to trip the contact circuit when the voltage across t

31、he trip coil rises above a predetermined value. JUNE 25, 2015 SUPPLEMENTARY PROTECTORS FOR USE IN ELECTRICAL EQUIPMENT - UL 1077 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.6 RATED CURRENT For an overcurrent-trip protector, the curren

32、t that the protector is intended to carry continuously without opening of the circuit. 2.7 SHUNT TRIP PROTECTOR A protector with a trip mechanism energized by a separate source of voltage or current that is derived from the main contact circuit or from an independent source. The trip mechanism is ei

33、ther of the overcurrent type or the voltage actuated type. 2.8 SUPPLEMENTARY PROTECTOR A manually resettable device designed to open the circuit automatically on a predetermined value of time versus current or voltage within an appliance or other electrical equipment. It is permitted to be provided

34、with manual means for opening or closing the circuit. 2.9 THERMAL AND MAGNETIC TRIP PROTECTOR A combination of 2.3 and 2.4. 2.10 THERMAL TRIP PROTECTOR A protector that is caused to trip by heat generated from current owing through a thermal element. 2.11 TRIP CURRENT The current at which an overcur

35、rent-trip protector is intended to open the contact circuit at a given ambient temperature and a given time. 2.12 TRIP-FREE A protector designed so that the contacts cannot be held in the closed position by the operating means during trip command conditions. 2.13 TRIP-FREE, CYCLING A protector desig

36、ned so that the contacts cannot be held in the closed position by the operating means during trip command conditions, but will reclose when the closing command is maintained. The protector will continue to close momentarily and repeatedly as long as the close command is maintained by the operating m

37、eans during trip command conditions. 2.14 TRIP MECHANISM The part of the protector that senses the abnormal condition in the circuit and causes the contact circuit to open. 2.15 TRIP VOLTAGE The voltage at which an overvoltage protector or undervoltage protector is intended to trip. 2.16 UNDERVOLTAG

38、E-TRIP PROTECTOR A magnetic trip protector intended to trip the contact circuit when the voltage across the trip coil falls below a predetermined value. JUNE 25, 2015 SUPPLEMENTARY PROTECTORS FOR USE IN ELECTRICAL EQUIPMENT - UL 1077 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O

39、R DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Components 3.1 Except as indicated in 3.2, a component of a product covered by this Standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components generally used in the products covered by this St

40、andard. 3.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 3.3 A component shall be used in

41、accordance with its rating established for the intended conditions of use. 3.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied l

42、imits, and shall be used only under those specic conditions. 4 Units of Measurement 4.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 5 Undated References 5.1 Any undated reference to a code or standard appearing in the requi

43、rements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRUCTION 6 General 6.1 A protector shall have an integral housing for all mechanisms and live parts, except the operating handle and the wiring terminals, and shall be capable of being oper

44、ated or reset without opening the housing. 6.2 A protector shall be so formed and assembled that it shall have the strength and rigidity necessary to resist the ordinary abuses to which it is capable of being subjected (including the tests specied in this Standard), without increasing its risk of re

45、, shock or personal injury due to partial or total collapse with a resulting reduction of spacings, loosening or displacement of parts, or other serious defect. JUNE 25, 2015 SUPPLEMENTARY PROTECTORS FOR USE IN ELECTRICAL EQUIPMENT - UL 1077 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPROD

46、UCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7 Corrosion Protection 7.1 Iron and steel parts except for thermal elements, magnet pole faces, hardened and polished parts such as latching surfaces, and other similar parts, where such protection is impractical, shall be acceptably protected agains

47、t corrosion by enameling, galvanizing, plating, or other equivalent means. 7.2 The requirements of 7.1 apply to all housings and to all springs and other parts upon which proper mechanical operation depends. It does not apply to small minor parts of iron or steel such as washers, screws, bolts, and

48、other similar parts that are not current-carrying, or to other parts where the malfunction of such unprotected parts would not be likely to result in a risk of re, electric shock or personal injury. Parts made of stainless steel, properly polished or treated when necessary, do not require additional

49、 protection against corrosion. 8 Insulating Materials 8.1 Insulating material for the support of current-carrying parts shall be strong, not easily ignited, and moisture resistant. A material other than porcelain, phenolic, or one that has not been evaluated for the support of current-carrying parts shall be investigated under conditions of actual service to determine if it has the necessary electrical, mechanical, and ammability properties and otherwise meets the intent of the requ