EPI-LX-R
4/17/12 1/2
One (1) power supply
Four (4) self-drilling screws (#8-18)
Four (4) recessed bumpers
Description
1.
Supplied Parts
EPI-LX-R
Power Supply Series with Regulator
Low Voltage, High Efficiency
The EPI-LX-R power supply series is built to the highest safety standard,
with built-in circuit breakers on the primary and secondary sides. The
load, which is divided into separate circuits to provide SELV (Safety
Extra-Low Voltage), is connected to an interface board. Additionally, a
built-in regular board serves as an intelligent switch to enable/disable the
line voltage in such a way that switching/pulsing does not harm the power
supply’s toroidal coil(s). The interface and regulator boards are both
RoHS compliant.
Design
The power supply’s mechanical design is both functional and installation
friendly. This slim and congenial design is made from extruded aluminum
profiles providing a high performance cooling structure as well as an
enclosure eliminating air sound. Sound is also reduced by the high
quality winding of the coils themselves, thus making the power supply
essentially silent. All vibrating parts are isolated, thereby eliminating
transmittal of noise to the building structure.
Surge
Traditional power supplies / transformers have a high starting current which
creates a surge that is many times higher than a nominal current. The
larger EPI-LX-R power supplies have a unique parallel connection that
reduces the surge by one third for a 1500 VA power supply and one half for
a 1000 VA power supply. For certain areas (particularly residential
applications), NEC requires AFCI circuit breakers on 120 VAC systems. To
simplify wiring and circuit breakers, use 230 VAC models.
Controls
Controls are to be chosen carefully, as power supplies started up often in
quick succession will be ruined as a result of the large amount of heat
developed in the primary coil. The heat developed in the power supply
increases by I
2
R, so when the starting current occurs, the heat developed
can be up to 1000 times normal. A power supply is not ruined by the load
but by the starting current which generates an abundant amount of heat.
This causes the insulation in the transformer to be destroyed. To ensure
long life and maximum efficiency, use only recommended controls for the
EPI-LX-R power supply series.
Derating of Power Supplies and Wires
Power Supplies that are exposed to high ambient temperatures above
77°F (25°C) must be derated, i.e., the maximum permitted load must be
reduced. It is also very important not to bundle up wires carrying high amps
as they will overheat, thereby inhibiting the ability to carry the intended
current.
The power supply must not be in contact with flammable materials,
as it is completely normal for power supplies to heat up, and it is not
unusual for the surface of the enclosure on a power supply to be hot
to the touch.
The power supply must not be covered with an insulating material.
It is preferable not to place the power supply in 'quiet' areas, such as
bedrooms and reading rooms, as the magnetization of the iron core
may generate a low noise which could be annoying.
Avoid placing the power supply on large surfaces, which may
transmit vibration; good mounting points are concrete pillars, brick
walls and steel girders.
Do not place the power supply in the vicinity of monitors and
television screens, as it can affect the picture's positions.
The power supply must be positioned so that it can easily be
accessible for servicing and repairs.
Installation Procedure
3.
The installation must be carried out by an electrician and comply
with electrical codes.
Turn off power at the main electrical panel to avoid electrical shock.
If needed, unhinge and remove cover of power supply.
Remove snap bushing from positioning hole on power supply.
Mark a center point at the top of the mounting location. Drive a
screw (with head diameter less than positioning hole) partially into
center point. Screw head should be offset enough so as to hang
power supply.
Hang power supply on center screw and align power supply
accordingly. The center screw is a
temporary placehold while
mounting screws and bumpers along outer flanges are secured.
Do
not rely on center screw to fully support weight of power supply.
Air vents
(Do not block)
Snap bushing
Install bumpers on underside of power supply along outer flanges as
shown below. Secure power supply to mounting surface with
included mounting screws. Remove center screw once power
supply is secured.
Reinsert snap bushing into positioning hole. Route signal cable(s)
through this hole.
Wire the EPI-LX-R power supply according to your application. See
the wiring diagram in Section 5.
Apply power to the EPI-LX-R power supply.
NOTE:
Bumpers will reduce
vibration transmitted from
power supply chassis.
24
COM TRG
GND SLV
Positioning hole
with Snap bushing
Regulator
board
Signal cable
Installation Guidelines
3.
To ensure optimum conditions and a long service life for the
EPI-LX-R power supply it is important to:
Mount the power supply in a vertical position (with load wires routing
from bottom panel) so that heat is dissipated effectively.
Never put a power supply where the ambient temperature is higher
than 77°F (25°C), unless specified otherwise on the power supply's
rating plate.
Mount chassis
VERTICALLY
for proper heat
dissipation
Positioning hole
Bumpers
(Install with recessed hole
facing flange underside)
Mounting
screws
