B1 copy starts here
B2 copy starts here
B3 copy starts here
Headline starts here
P R E- I N S TA L L AT I O N R EQ U I R EM EN T S , I N S TA L L AT I O N
—
Installation
—
The illustration shown provides a recommended
method for grounding a separately derived power
system, per the National Electrical Code, Article
250.30. Please check with the local municipality
or governing authority for additional codes or
other approved regulatory requirements before
attempting to configure any electrical power
distribution system.
—
Example of an NEC compliant grounding arrangement for a separately derived system
Neutral
Primary dist. panel
with overcurrent or
service disconnect means
Grounding electrode
Ref. NEC250-30 (1)(4)
Note:
Primary transformer
windings not shown
for simplicity
Equipment grounding
conductor ref. NEC
250.32 (B)(1)
Bonding jumper
Ref. NEC250 -30(a)(1)
SPD
N
G
Phase C
X2
X1
X0
X3
Phase B
Phase A
Grounding electrode
conductor ref. NEC
250.62 -250.64 -250.66
—
Pre-installation requirements
WARNING
Power must be proven disconnected before starting
installation, inspection or maintenance. Failure to do so
may cause serious injury, death and/or property damage.
Il doit être prouvé que l’alimentation est déconnectée avant
de commencer l’installation, l’inspection ou l’entretien. Le
non-respect de cette précaution peut entraîner des blessures
graves, la mort et/ou des dégâts matériels.
The SPDs described in this manual are intended to arrive at
the job site as factory-mounted and wired into OEM electrical
panels or gear. When receiving the SPD on site as OEM factory
preinstalled, please begin at step number 5 below.
Installation steps 1–4, shown below (appended with “OEM”),
are intended to provide guidance to OEMs for factory
installation considerations.
Before attempting installation, make sure that the pre-
installation requirements of this manual have been satisfied.
If the status of the pre-installation requirements are not
known, do not attempt to continue.
1. Mounting (OEM)
The SPD is configured with a mounting base to allow for
secure attachment to the equipment frame. The SPD can
be installed in any orientation; however, special
consideration should be given to allow for periodic
inspection of the diagnostic display panel. The SPD should
be installed as close to the power source as possible to
provide the best SPD performance. The SPD mounting base
should always be secured to a structure that is intended to
be grounded.
2. Power connections (OEM)
Mechanical terminals are provided on the SPD for
connection to the electrical power system. These terminals
will accommodate #14 to 2/0 AWG stranded copper
conductors. The minimum recommended wire size for the
SPD is #6 AWG. See following diagram for terminal location
and identification.
5
