Simplex, Inc., 5300 Rising Moon Road, Spring
fi
eld, IL 62711-6228 • 217-483-1600 • Fax 217-483-1616
Lbdman8p.indd (04/11) • © 2011 Simplex, Inc. All Rights Reserved. • Printed in the USA. • www.simplexdirect.com
LOAD BANK MANUAL • LBD Series • page 4 of 16
Powr-Web Load Elements
Simplex “Powr-Web” load elements are
UL recognized. These elements conser-
vatively operate at approximately half
the maximum temperature rating of the
alloy (1080°F vs. 1920°F). For example:
Alloy: FeCrAl
Ratings: 3333W@120V
4170W@139V
Connections: 120V wye (208V),
139V wye (240V, 3ø),
277V wye (480V, 3ø),
240 delta (240V, 3ø), or
480 delta (480V, 3ø).
These elements are rigidly supported
by high-temperature, ceramic-clad,
stainless-steel supports. Element-
to-element short circuits are virtually
eliminated.
PRIMARY INSPECTION
Preventative visual inspection of the
shipping crate and Load Bank must be
performed before installation. Physical
or electrical problems due to handling
and vibration may occur during ship-
ment.
1. If crate shows any signs of damage
examine the Load Bank in the cor-
responding areas for signs of initial
problems.
2. Check the entire outside of the
cabinet for any visual damage which
could cause internal electrical or
mechanical problems due to reduced
clearance.
3. Rotate and push all switches
through all positions to en-
sure smooth operation.
4. Inspect the bottom of crate/
enclosure for any compo-
nents that may have jarred
loose during shipment such
as indicator light lenses,
switch knobs, etc.
5. Visually inspect element
chamber for foreign objects
and mechanical damage.
INSTALLATION
1.
Using the
fl
anges provided
attach the Load Bank with
bolts per specifications.
Bottom support for the load
element enclosure is recommended.
2. Con
fi
rm the test source is properly
grounded and ground the Load Bank
to its own independent ground.
3. Con
fi
rm all load command switches
are in the “Off” position.
4. Per load connection drawings cable
the load source to the Load Bank.
Consult NEC for proper wire size.
When cabling the Load Bank to the
test source pull Load Bank access
holes, install conduit connectors and
conduits as needed.
5. Connect customer supplied contacts
to load dump terminals shown on
electrical drawing or jumper if not
used.
6. Per drawings connect customer
supplied alarm contacts.
If any problems are observed
during Primary Inspection call
the Simplex Service Manager at
217-483-1600 (24hrs.)
References to Remote Control
in this manual should be ig-
nored if the Load Bank you are
using is equipped with a Local
Control Panel only.
Part of Typical
Pictorial Drawing
