INSTALLATION
1. This document provides detailed information on how to install and operate the SPD-20
of Surge Protective Devices(SPDS).
2. The SPD-20 of Surge Protective Devices are installed/connected in parallel with the line of TN System
3. Incorrect installation may significantly impair the performance of the SPD. It is particularly important
that all installation procedures and guidelines be followed exactly.
4. Before starting any installation procedures, verify service voltage(AC or DC)with a volt
meter to ensure that the correct model has been selected for the supply voltage.
5. DO NOT INSTALL THE SPD IF MEASURED VOLTAGE EXCEEDS UNIT RATINGS.
6. REMOVE POWER FROM ELECTRICAL SYSTEM PRIOR TO INSTALLATION.
7. ENSURE THAT ALL CONNECTIONS ARE CORRECT BEFORE ENERGIZING.
8. Apply power(energize),LED indicator should illuminate. If LED is out, the SPD requires service.
9. Never install on an ungrounded system.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Thoroughly read and comprehend all instructions before commencing installation.
This equipment must be installed by qualified electrical personnel in accordance with
all applicable codes which supersede these instructions.
Improper installation or misapplication of these devices may result in death or serious injury.
Failure to follow these instructions could result in damage to the electrical system(s) or related equipment.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Never install this unit if it has fallen, has been dropped or looks damaged in any way.
Return device to factory for diagnostic testing.
! CAUTION
20kA Surge Protection Device
! DANGER
SPD-20 series
File Name:SPD-20-SPEC 2014-03-14
Circuit Diagram
AC/N
FG/PE
AC/L
Z N R 2
Z N R 3
D1
R1
Z N R 1
D2
R2
LED2
LED1
