1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1449 Surge Protective Devices STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORI
2、ZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Surge Protective Devices, UL 1449 Fourth Edition, Dated August 20, 2014 Summary of Topics Revision pages have been issued for the Standard for Safety for Surge Protective Devices, UL 1449, to correct a
3、n error in paragraph 19.4 made during the publication of the revision pages dated July 12, 2017. No additional technical changes have been made. The revised requirements are substantially in accordance with Proposal(s) on this subject dated October 28, 2016. Text that has been changed in any manner
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8、 fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. JULY 21, 2017 UL 1449 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 21, 2017 UL 1449 tr2 N
9、o Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 20, 2014 (Title Page Reprinted: July 21, 2017) 1 UL 1449 Standard for Surge Protective Devices First Edition August, 1985 Second Edition August, 1996 Third Edition Sep
10、tember, 2006 Fourth Edition August 20, 2014 This ANSI/UL Standard for Safety consists of the Fourth Edition including revisions through July 21, 2017. The most recent designation of ANSI/UL 1449 as an American National Standard (ANSI) occurred on July 12, 2017. ANSI approval for a standard does not
11、include the Cover Page, Transmittal Pages, and Title Page. 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 Standar
12、ds 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 all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIE
13、S INC. ANSI/UL 1449-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION
14、 FROM UL CONTENTS INTRODUCTION 1 Scope .6 2 References .8 3 Glossary .8 4 Components 13 5 Units of Measurement 13 CONSTRUCTION 6 General .13 7 Enclosure .14 7.1 Type 1 and Type 2 SPDs 14 7.2 Type 3 SPD Cord-Connected .19 7.3 Type 3 SPD Direct Plug-In 20A 7.4 Open-type SPDs 23 8 Protection Against Co
15、rrosion 23 9 Insulating Materials 24 9.1 General 24 9.2 Bushings .24 10 Current-Carrying Parts 25 11 Internal Wiring 25 12 Supplementary Protection 27 13 Accessibility of Live Parts 30 14 Supply Connections .30 14.1 Type 1, Type 2 and Type 3 SPD Permanently Connected .30 14.2 Type 3 SPD Cord Connect
16、ed 32B 14.3 Type 3 SPD Direct Plug-In 33 15 Mounting 33 15.1 Type 1 or Type 2 SPD 33 15.2 Type 3 SPD Cord Connected .33 15.3 Type 3 SPD Direct Plug-In 36 16 Receptacles 36 17 Grounding 36A 17.1 General .36A 17.2 Type 1 or Type 2 SPD .36B 17.3 Type 3 SPD Cord Connected .39 17.4 Type 3 SPD Direct Plug
17、-In 40 18 Spacings 40 18A SPDs Used in Higher Altitude .42 19 Clearance and Creepage Distances .42A 20 Switches .44 21 Printed Wiring Boards .44 22 Electronic Circuits .45 23 Isolated Secondary Circuits 46 23.1 General .46 23.2 Difference between the level of evaluation required within each type of
18、secondary circuit 46A 23.3 Class 2 circuit requirements .48 23.4 Limited voltage/current circuit requirements .48 JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 23.5 Limiting energy circuit
19、 requirements 49 23.6 Limiting impedance circuit requirements .50 24 Separation of Circuits 50A 25 Capacitors 50A 26 Electromagnetic Interference Filters 50B 27 Protectors for Communication and Fire Alarm Circuits .50B 28 Antenna Connections for Audio-Video Products 53 29 SPDs Intended for Use on Un
20、grounded Systems, Impedance Grounded Systems, or Corner Grounded Delta Systems 53 30 Uninterruptible Power Supply Equipment 53 31 SPD/Panelboard Extension Modules 53 32 Molded Case Surge Protective Devices .54 33 Interchangeability of Metal Oxide Varistors (MOVs) .55 34 Supplementary Circuit .56 35
21、Rechargeable Battery Pack 56 TEST PROGRAM 36 General 56 36.1 General .56 36.2 Test environment and general sample discussion 57 37 Leakage Current Test Type 3 SPDs Only 64 38 Dielectric Voltage-Withstand Test .68 38.1 Primary circuits 68 38.2 Isolated secondary circuits 69 39 Temperature Test .69 40
22、 Surge Testing 73 40.1 General .73 40.2 Test equipment 74 40.3 Surge generator calibration 79 40.4 Test procedure Application and measurement points 82 40.5 Representative device - Sample preparation .84 40.6 Determination of voltage protection rating (VPR) .85 40.7 Nominal discharge current For Typ
23、e 1 and Type 2 SPDs and Type 1, 2 Component Assemblies 85 40.8 Operating duty cycle test For Type 3 SPDs and Type 3 Component Assemblies . . .86 40.9 Repeated voltage protection rating test 86A 41 Type 5 SPD Surge Testing 87 42 Type 4 Component Assemblies Surge Testing .88 43 Operational Voltage Tes
24、t 88 44 Current Testing .89 44.1 General .89 44.2 Short circuit current rating test For Type 1 and Type 2 SPDs and permanently connected Type 3 SPDs .90B 44.3 Intermediate current test 93 44.4 Limited current abnormal overvoltage test 95 45 Thermal Responsive Device Testing 96 45.1 Temperature withs
25、tand 96 45.2 Repeat limited current test .97 46 Thermal Responsive Device Testing 97 47 Thermal Responsive Device Testing 98 48 Grounding Continuity Test 101 49 Fault Current Test .101 JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 2BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
26、OR DISTRIBUTION WITHOUT PERMISSION FROM UL 50 Overcurrent Test 102 51 Withstand Test 103 52 Instrumentation and Calibration of High-Capacity Circuits .106A 52.1 General .106A 52.2 Available current of 10,000 amperes or less .106A 52.3 Available current more than 10,000 amperes .108 52.4 Instrumentat
27、ion for test currents above 10,000 amperes .110 53 Insulation Resistance Test 112 54 Capacitor Endurance Test 112 55 Component Breakdown Test 113 56 Strain Relief Test 114 57 Push-Back Relief Test 115 58 Conductor Secureness Test .115 59 Snap-On Cover Tests 116 60 Non-Metallic Enclosure Conduit Conn
28、ection Tests .116 60.1 General 116 60.2 Pullout .117 60.3 Bending 117 60.4 Torque .118 61 Enclosure Impact Tests 119 61.1 General 119 61.2 Drop impact test 119 61.3 Steel sphere impact test .120 61.4 Low-temperature steel sphere impact test 123 62 Crushing Test .123 63 Mold Stress-Relief Distortion
29、Test .124 64 Mounting Hole Barrier Tests 125 64.1 General 125 64.2 Mounting hole barrier impact test 125 64.3 Mounting hole barrier probe test 126 65 Adequacy of Mounting Test .127 66 Accessibility Tests .129 66.1 Enclosure accessibility test .129 66.2 Accessibility of live parts test .129 67 Perman
30、ence of Cord Tag Test 131 67.1 General 131 67.2 Conditioning 132 67.3 Test method 132 68 Capacitor Discharge .132 69 Metal Oxide Varistor Voltage 134 70 Aging Test 134 71 Pullout Insertion and Withdrawal Test 134 72 Capacitor Failure Test 134 73 Breakdown Voltage Measurement Test .134A 73A Vibration
31、 Test 134A 73B Strength of Mounting Test 134A 73C PTC-MOV Testing Sequence .134A 73D High Altitude Conditioning 134B MANUFACTURING AND PRODUCTION-LINE TESTS 74 General .134C 75 Dielectric Voltage-Withstand Test 134C JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 3UL COPYRIGHTED MATERIAL NOT AUTHOR
32、IZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 76 Grounding Continuity Test 135 77 Nominal Varistor Voltage .137 78 Breakdown Voltage Measurement .137 RATINGS 79 General 137 MARKINGS 80 Details .138 INSTRUCTION MANUAL 81 Details 144A SUPPLEMENT SA - PHOTOVOLTAIC (PV) SPDs S
33、A1 Scope SA1 SA2 Glossary SA1 SA3 Spacings .SA1 SA4 Dielectric Voltage Withstand Test (Section 38) for PV SPDs SA1 SA5 DC Voltage Test Source Requirements .SA2 SA6 Voltage Protection Rating Test (Section 40.6) .SA2 SA7 Nominal Discharge Current (In) Test (Section 40.7) SA2 SA8 Current Tests (Section
34、 44) SA2 SA9 Temperature Withstand Test (Section 45) SA4 SA10 Thermal Responsive Device Testing (Section 46) SA4 SA11 PV SPD Leakage (Quiesent) Current (Iq) Test .SA4 SA11A Operational Voltage Test .SA4 SA12 Markings SA4 SUPPLEMENT SB - DIRECT CURRENT (DC) SPDs SB1 Scope SB1 SB2 Glossary SB1 SB3 Spa
35、cings .SB1 SB4 Dielectric Voltage Withstand Test (Section 38) for DC SPDs SB2 SB5 DC Voltage Test Source Requirements .SB2 SB6 Voltage Protection Rating Test (Section 40.6) .SB3 SB7 Nominal Discharge Current (In) Test (Section 40.7) SB3 SB8 Current Tests (Section 44) SB3 SB9 Temperature Withstand Te
36、st (Section 45) SB4 SB10 Thermal Responsive Device Testing (Section 46) SB4 SB11 DC SPD Leakage (Quiesent) Current (Iq) Test .SB4 SB12 Photovoltaic (PV) SPDs .SB4 SB13 Dual Rated AC/DC SPDs SB4 SB14 Markings SB4 JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED
37、 FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX A Standards for ComponentsA1 JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 4AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 12, 2017 SURGE PROTECTIVE DEVI
38、CES - UL 1449 4B No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APPENDIX B MARCH 17, 2016 SURGE PROTECTIVE DEVICES - UL 1449 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMIS
39、SION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover enclosed and open-type Surge Protective Devices (SPDs) designed for repeated limiting of transient voltage surges as specied in the standard on 50 or 60 Hz power circuits not exceeding 1000 V and for PV applications up to 1500 V dc and d
40、esignated as follows: Type 1 One port, permanently connected SPDs, except for watt-hour meter socket enclosures, intended for installation between the secondary of the service transformer and the line side of the service equipment overcurrent device, as well as the load side, including watt- hour me
41、ter socket enclosures and Molded Case SPDs intended to be installed without an external overcurrent protective device. Type 1 SPDs for use in PV systems can be connected between the PV array and the main service disconnect. Type 2 Permanently connected SPDs intended for installation on the load side
42、 of the service equipment overcurrent device; including SPDs located at the branch panel and Molded Case SPDs. Type 3 Point of utilization SPDs, installed at a minimum conductor length of 10 meters (30 feet) from the electrical service panel to the point of utilization, for example cord connected, d
43、irect plug-in, receptacle type and SPDs installed at the utilization equipment being protected. See marking in 80.3. The distance (10 meters) is exclusive of conductors provided with or used to attach SPDs. Type 4 Component Assemblies Component assembly consisting of one or more Type 5 components to
44、gether with a disconnect (integral or external) or a means of complying with the limited current tests in 44.4. Type 1, 2, 3 Component Assemblies Consists of a Type 4 component assembly with internal or external short circuit protection. Type 5 Discrete component surge suppressors, such as MOVs that
45、 may be mounted on a PWB, connected by its leads or provided within an enclosure with mounting means and wiring terminations. 1.2 Except as indicated in 1.3, the products covered by this Standard are rated and intended for connection to circuits or supply sources having nominal voltage ratings as sp
46、ecied in Table 44.1. 1.3 A product intended for connection to an ac circuit or supply source other than that specied in 1.2 may be examined and tested in accordance with the intent of the requirements in this standard and, if found to be substantially equivalent, may be judged to comply with this St
47、andard. 1.4 These requirements cover cord-connected direct plug-in, and permanently connected SPDs intended for indoor and outdoor use in accordance with the National Electrical Code, ANSI/NFPA-70. JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
48、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.5 These requirements do not cover the interconnection of multiple eld installed SPDs. JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL
49、 JULY 12, 2017 SURGE PROTECTIVE DEVICES - UL 1449 6B No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.6 These requirements cover SPDs that may include components specically intended to function as lters for conducted electromagnetic interference (EMI) or noise, in addition to limiting transient voltage surges. See Section 26. 1.7 These requirements cover SPDs employing circuit components intended to provi
