BS EN 61643-11:2012+A11:2018
$215.11
Low-voltage surge protective devices – Surge protective devices connected to low-voltage power systems. Requirements and test methods
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 118 |
This part of IEC 61643 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are packaged to be connected to 50/60 Hz a.c. power circuits, and equipment rated up to 1 000 V r.m.s. Performance characteristics, standard methods for testing and ratings are established. These devices contain at least one nonlinear component and are intended to limit surge voltages and divert surge currents.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 21 | English CONTENTS |
| 26 | FOREWORD |
| 28 | INTRODUCTION |
| 29 | 1 Scope 2 Normative references 3 Terms, definitions and abbreviations |
| 30 | 3.1 Terms and definitions |
| 35 | 3.2 Abbreviations |
| 36 | Tables Table 1 – List of Abbreviations |
| 37 | 4 Service conditions 4.1 Frequency 4.2 Voltage 4.3 Air pressure and altitude 4.4 Temperatures 4.5 Humidity 5 Classification 5.1 Number of ports 5.2 SPD design 5.3 Class I, II and III tests |
| 38 | 5.4 Location 5.5 Accessibility 5.6 Mounting method 5.7 Disconnectors (including overcurrent protection) 5.8 Degree of protection provided by enclosures Table 2 – Class I, II and III tests |
| 39 | 5.9 Temperature and humidity range 5.10 Power system 5.11 Multipole SPD 5.12 SPD failure behaviour 6 Preferred values for SPD 6.1 Preferred values of impulse discharge current Iimp for class I tests 6.2 Preferred values of nominal discharge current for class II tests In 6.3 Preferred values of open-circuit voltage for class III tests Uoc 6.4 Preferred values of voltage protection level Up 6.5 Preferred values of r.m.s. maximum continuous operating voltage Uc |
| 40 | 7 Requirements 7.1 General requirements |
| 41 | 7.2 Electrical requirements |
| 44 | 7.3 Mechanical requirements |
| 46 | 7.4 Environmental and material requirements |
| 47 | 7.5 Additional requirements for specific SPD designs |
| 48 | 7.6 Additional requirements as may be declared by the manufacturer 8 Type tests |
| 49 | 8.1 General testing procedures |
| 50 | Figures Figure 1 – Metallic screen test set-up |
| 51 | Table 3 – Type test requirements for SPDs |
| 53 | Table 4 – Common pass criteria for type tests |
| 54 | Table 5 – Cross reference for pass criteria versus type tests |
| 55 | Table 6 – Preferred parameters for class I test |
| 58 | Figure 2 – Example of a decoupling network for single-phase power Figure 3 – Example of a decoupling network for three-phase power Figure 4 – Alternate test for the measured limiting voltage |
| 59 | 8.2 Indelibility of markings 8.3 Electrical tests |
| 61 | Figure 5 – Flow chart of testing to check the voltage protection level Up |
| 62 | Table 7 – Tests to be performed to determine themeasured limiting voltage |
| 64 | Figure 6 – Flow chart of the operating duty test |
| 65 | Figure 7 – Test set-up for operating duty test |
| 66 | Figure 8 – Operating duty test timing diagram for test classes I and II |
| 67 | Figure 9 – Additional duty test timing diagram for test class I Figure 10 – Operating duty test timing diagram for test class III |
| 69 | Table 8 – Prospective short-circuit current and power factor |
| 71 | Figure 11 – Test circuit for SPD with Ifi lower than the declared short-circuit rating |
| 72 | Figure 12 – Test circuit for SPD’s failure mode simulation Figure 13 – Timing diagram for SPD’s failure mode simulation |
| 74 | Table 9 – Dielectric withstand |
| 76 | Figure 14 – Example of a test circuit to perform the test under TOVs caused by faults in the low voltage system Figure 15 – Timing diagram for the test under TOVs caused by faults in the low voltage system |
| 78 | Figure 16 – Example of circuit for testing SPDs for use in TT systems under TOVs caused by faults in high (medium) voltage systems |
| 79 | 8.4 Mechanical tests Figure 17 – Timing diagram for use in testing SPDs under TOVs caused by faults in the high (medium) voltage system using circuit of Figure 16 |
| 80 | Table 10 – Screw thread diameters and applied torques |
| 81 | Table 11 – Cross-sections of copper conductors forscrew-type or screwless terminals |
| 82 | Table 12 – Pulling forces (screw terminals) Table 13 – Conductor dimensions |
| 83 | Table 14 – Pulling forces (screwless terminals) |
| 85 | Table 15 – Air clearances for SPDs |
| 86 | Table 16 – Creepage distances for SPDs |
| 87 | Table 17 – Relationship between material groups and classifications |
| 88 | Figure 18 – Test apparatus for impact test |
| 89 | Figure 19 – Striking element of the pendulum hammer |
| 90 | Table 18 – Fall distances for impact requirements |
| 91 | 8.5 Environmental and material tests |
| 92 | Figure 20 – Ball thrust tester Figure 21 – Loading rod for ball thrust tester |
| 94 | 8.6 Additional tests for specific SPD designs Table 19 – Test conductors for rated load current test |
| 95 | Table 20 – Current factor k for overload behaviour |
| 96 | Figure 22 – Examples for appropriate test circuits of the load side short-circuit test(s) |
| 97 | 8.7 Additional tests for specific performance if declared by the manufacturer |
| 98 | Table 21 – Tolerances for proportional surge currents |
| 99 | 9 Routine and acceptance tests 9.1 Routine tests 9.2 Acceptance tests |
| 100 | Annex A (normative) Reference test voltages for SPDs UREF |
| 101 | Table A.1 – Reference test voltage values |
| 105 | Annex B (normative) TOV Ratings Table B.1 – TOV test values for systems complying with IEC 60364 series |
| 106 | Table B.2 – TOV test parameters for North American systems |
| 107 | Table B.3 – TOV test parameters for Japanese systems |
| 108 | Annex C (normative) Tests to determine the presence of a switching component and the magnitude of the follow current |
| 110 | Annex D (normative) Reduced test procedures |
| 111 | Table D.1 – Reduced test procedure for SPDs complying with IEC 61643-1:2005 |
| 112 | Annex E (informative) Alternative circuits for testing SPDs under TOVs caused by faults in the high (medium) voltage system Figure E.1 – Examples of a three-phase and single-phase circuit for use in testing SPDs under TOVs caused by faults in the high (medium) voltage system |
| 113 | Annex F (informative) Environmental tests for outdoor SPDs |
| 115 | Annex G (normative) Temperature rise limits Table G.1 – Temperature-rise limits |
| 116 | Bibliography |
