1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1283 Electromagnetic Interference Filters STANDARD FOR SAFETYUL 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 Electromagnetic Interference Filters, UL 1283 Seventh Edition, Dated May 17, 2017 SUMMARY OF TOPICS A new edition has been issued for UL 1283 to reect the latest approval date as an America
3、n National Standard and to include the proposals dated March 10, 2017. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated March 10, 2017. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmit
4、ted 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 tness for a
5、ny 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 representative
6、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 from and
7、 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. MAY 17, 2017 UL 1283 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED
8、 FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 17, 2017 UL 1283 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 17, 2017 1 UL 1283 Standard for Electromagnetic Interference Filters First
9、Edition October, 1980 Second Edition March, 1984 Third Edition June, 1993 Fourth Edition June, 1998 Fifth Edition November, 2005 Sixth Edition February, 2015 Seventh Edition May 17, 2017 This ANSI/UL Standard for Safety consists of the Seventh Edition. The most recent designation of ANSI/UL 1283 as
10、an American National Standard (ANSI) occurred on May 17, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. The Department of Defense (DoD) has adopted UL 1283 on August 2, 1989. The publication of revised pages or a new edition of this Standard wil
11、l not 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 https:/. ULs Standards for Safety are copyri
12、ghted 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 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 1283-2017
13、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 17, 2017 ELECTROMAGNETIC INTERFERENCE FILTERS - UL 1283 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONT
14、ENTS INTRODUCTION 1 Scope .5 2 Components5 3 Units of Measurement .6 4 Undated References 6 5 Glossary .6 CONSTRUCTION 6 General 6 7 Frame and Enclosure7 7.1 General .7 7.2 Metal enclosures .8 7.3 Nonmetallic enclosures9 8 Corrosion Protection.9 9 Supply Connections 10 9.1 Facility lters10 9.2 Cord-
15、connected lters11 9.3 Direct-plug-in type .12 10 Power Supply Cord Bushings 14 11 Strain Relief14 12 Receptacles15 13 Overcurrent Protection 15 14 Switches and Controllers 15 15 Facility Filter Mounting 16 16 Insulating Materials .16 17 Live Parts17 18 Accessibility of Live Parts 17 19 Flammability
16、Characteristics of Polymeric Materials .20 20 Wiring .20 21 Spacings 21 22 Grounding .24 23 Capacitors .25 PERFORMANCE 24 General26 25 Leakage Current27 26 Temperature .30 26.1 General .30 26.2 Test method .30 26.3 Test description 32 27 Dielectric Voltage-Withstand .33 28 Insulation Resistance34 29
17、 Overload.34 30 Endurance .35 31 Abnormal Operation.36 32 Grounding Continuity 37 33 Strain Relief38 MAY 17, 2017 ELECTROMAGNETIC INTERFERENCE FILTERS - UL 1283 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 34 Direct Plug-In Units Mechani
18、cal Strength Tests .38 34.1 Blade secureness 38 34.2 Impact 38 34.3 Resistance to crushing 39 35 Pullout, Bending, and Twisting .39 36 Capacitance39 36.1 Capacitor discharge 39 36.2 Capacitance measurement 40 37 Ignition Through Bottom Openings 41 37.1 General .41 37.2 Hot, aming oil .41 38 Withstan
19、d 42 39 Instrumentation and Calibration of High-Capacity Circuits 45 39.1 General .45 39.2 Current and power factor determination (5,000 and 10,000 A) .45 39.3 Galvanometers.46 39.4 Circuit calibration .47 39.5 Current and power factor determination (over 10,000 A) 48 39.6 Recovery voltage.50 39.7 S
20、hunting resistance 50 MANUFACTURING AND PRODUCTION TESTS 40 Dielectric Voltage-Withstand .51 41 Grounding Continuity 52 RATINGS 42 Details.52 MARKINGS 43 Details.53 INSTRUCTIONS 44 Installation Instructions 56 APPENDIX A Standards for ComponentsA1 MAY 17, 2017 ELECTROMAGNETIC INTERFERENCE FILTERS -
21、UL 1283 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover electromagnetic interference (EMI) lters installed on, or connected to, 1,000 V or lower potential circuits, 50 60 Hz, or up to 1,500
22、Vdc, and installed in accordance with the National Electrical Code, NFPA 70. 1.2 These requirements cover lters used to attenuate unwanted radio-frequency signals (such as noise or interference) generated from electromagnetic sources. These lters consist of capacitors and inductors used alone or in
23、combination with each other and may be provided with resistors. 1.3 These requirements cover facility lters, cord-connected lters, and direct plug-in lters. 1.4 These requirements do not cover transient-voltage surge suppressors (that is, devices for repeated limiting of voltage surges on power circ
24、uits such as silicone avalanche diodes, metal oxide varistors, gas tubes, spark-gaps, etc). Transient Voltage Surge Suppressors are investigated under the Standard for Surge Protective Devices, UL 1449. These requirements also do not cover EMI lters for outdoor use. Appliance lters are covered under
25、 the Standard for Passive Filter Units for Electromagnetic Interference Suppression Part 3: Passive Filter Units for Which Safety Tests are Appropriate, UL 60939-3. 1.5 These requirements do not cover direct plug-in products and cord-connected products provided with more than two receptacles. A dire
26、ct plug-in product employing more than two receptacles and having an EMI lter is investigated under the requirements for current taps in the Standard for Attachment Plugs and Receptacles, UL 498. A cord-connected product employing more than two receptacles and having an EMI lter is investigated unde
27、r the Standard for Relocatable Power Taps, UL 1363. The EMI lter part of these products would be investigated to determine compliance with the requirements in this standard in so far as they apply. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall c
28、omply with the requirements for that component. See Appendix A for a list of standards covering components generally used in the products covered by this Standard. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the ap
29、plication of the component in the product covered by this standard; or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specic components are incomplete in construction features or rest
30、ricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. MAY 17, 2017 ELECTROMAGNETIC INTERFERENCE FILTERS - UL 1283 5UL COPYRIGHTED MATERIA
31、L NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 Undated References 4.1 Any undated reference to a code or standar
32、d appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 CORD-CONNECTED FILTER A lter provided with a supply cord having an attachment plug for connecting the lter to a branch-circuit receptacle. It is also prov
33、ided with one or two receptacles for distribution of the ltered voltage to an external (other equipment) load. 5.2 DIRECT PLUG-IN FILTER A lter provided with blades at the lter body that plug directly into a 15 A, 120 V branch-circuit receptacle. It is also provided with one or two receptacles for t
34、he distribution of the ltered voltage to an external (other equipment) load. 5.3 FACILITY FILTER A lter intended for installation on the load side of the service equipment overcurrent device; including lters located at the branch panel. 5.4 FIELD-WIRING TERMINAL Any terminal to which a supply conduc
35、tor or other wire can be connected by an installer in the eld. However, if a wire is provided as part of the lter and a pressure terminal, connector, soldering lug, crimped eyelet, or other means for making the eld connection is factory assembled to the wire, the combination of the wire and the conn
36、ecting means is not considered to be a eld-wiring terminal. 5.5 OPPOSITE POLARITY A difference in potential between two points, such that shorting of these two points would result in a condition involving an overload, rupturing of printed wiring-board tracks, components, or fuses, and similar result
37、s. CONSTRUCTION 6 General 6.1 Only materials that are acceptable for the particular use shall be used in an EMI lter. Every lter shall be made and nished with the degree of uniformity and grade of workmanship that are practicable in a well-equipped factory. MAY 17, 2017 ELECTROMAGNETIC INTERFERENCE
38、FILTERS - UL 1283 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7 Frame and Enclosure 7.1 General 7.1.1 The following conditions indicate the maximum acceptable size for any opening in the enclosure of a lter including a hole, louver, or
39、an opening protected by means of wire screening, expanded metal, or a perforated cover: a) A oor-mounted lter over 48-in (1.22-m) high and a table- or desk-mounted lter shall have no top openings having a maximum linear dimension (in any direction) greater than 3/16 in (4.8 mm). Any other type of lt
40、er shall have no top openings. b) Bottom openings of perforated metal not larger than described in Table 7.1 are acceptable. Other patterns and hole sizes are acceptable if they comply with the ignition test described in Ignition Through Bottom Openings, Section 37. c) Any opening in other than the
41、bottom or top shall not permit the entrance of a rod greater than 25/32 in (20 mm) in diameter. See also Accessibility of Live Parts, Section 18. Table 7.1 Acceptable perforated-metal bottom plates Nominal thickness Minimum thickness Maximum diameter of holes Minimum spacing of holes center to cente
42、r in (mm) in (mm) in (mm) in (mm) 0.030 (0.76) 0.026 (0.66) 0.045 (1.14) 0.067 (1.70) (233 holes per in 2 or 36 holes per cm 2 ) 0.030 (0.76) 0.026 (0.66) 3/64 or 0.047 (1.19) 3/32 or 0.094 (2.36) 0.035 (0.89) 0.032 (0.81) 0.075 (1.91) 1/8 or 0.125 (3.18) (72 holes per in 2 or 11 holes per cm 2 ) 0.
43、040 (1.02) 0.036 (0.91) 1/16 or 0.063 (1.60) 7/64 or 0.109 (2.77) 0.040 (1.02) 0.036 (0.91) 5/64 or 0.078 (1.98) 1/8 or 0.125 (3.18) 7.1.2 If screening is used as part of the enclosure, the wires shall not be smaller than 16 AWG (1.29 mm nominal diameter) for screen openings 1/2 in 2 (323 mm 2 ) or
44、less in area, and shall not be smaller than 12 AWG(2.05mmnominaldiameter)forlargerscreenopenings.Sheetmetalusedforexpanded-metalmesh and perforated sheet metal shall have a thickness of not less than 0.042 in (1.07 mm) for mesh openings or perforations 1/2 in 2 (323 mm 2 ) or less in area, and shall
45、 have a thickness of not less than 0.093 in (2.36 mm) for larger openings. 7.1.3 An opening into a wiring compartment shall be so located or so shielded that direct emission of molten metal, burning insulation, and the like from components other than wiring does not occur under fault conditions. 7.1
46、.4 Insulated live parts or portions of insulated live parts which extend through a primary Type 12 enclosure, as dened in the Standard for Enclosures for Electrical Equipment, Environmental Considerations, UL 50E, shall be protected from dripping non-corrosive liquids and circulating dust by either
47、of the following methods: a) When protection from dripping non-corrosive liquids is provided by electrical insulation integral to the insulated live part, the insulation material shall meet the requirements for Flame Rating, RTI, HWI, HAI and CTI as described in the requirements for Insulating Mater
48、ial in the Standard for Power Conversion Equipment, UL 508C, and additionally the requirements for MAY 17, 2017 ELECTROMAGNETIC INTERFERENCE FILTERS - UL 1283 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Volume Resistivity and Dielectric
49、 Strength, both of the Standard for Polymeric Materials Use in Electrical Equipment Evaluations, UL 746C, following exposure to water in accordance with the requirements for Water Exposure and Immersion of UL 746C. b) When protection from dripping liquids is provided by mechanical means such as a cavity, channel, hood, or guard, the construction shall inhibit contact with dripping liquids when the assembly including primary enclosure is subjected to the Drip Test in the St
