Installation Guide

LED
Lighting Surge
Protection Modules
Design and Installation
Guide
Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication,
but are subject to changes without notice. Visit littelfuse.com for more information.
© 2016 Littelfuse, Inc.
Table of Contents Page
Introduction 3
Indirect Lightning-Induced Surge 3-5
Regional Differences in Lightning Frequency 6-7
Components That Protect Against Induced Surge Events 8
Modular Solution vs. a Solution Embedded into the
Power Supply Unit
9
Thermally Protected MOV for SPD Safety 9
Over-voltage Testing in UL 1449 and IEC 61643-11 10-15
Coordination between the SPD and the Power Supply Unit
to Reduce “Surge Let-through”
16-17
Power Supply Unit Design Considerations (Fuse,
Equivalent Resistance, TVS Diode)
18-19
Wiring Guide 20-21
Installation Guide 22
Legal Disclaimers 23