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IECEX , ATEX Certified Terminal Block DG 290
15EDGKNH/15EDGKNHM/15EDG
KNHG-3.5
additional power supply, Locking pin
ensures secure connection to the PCB,
Rated up to 5 A and 60 V UL.
The new connectors support reliable
long-term installation of LED modules
(assembled from LED arrays mounted
on rigid and thermally conductive
substrates for optimal heat dissipation)
into a wide variety of applications, e.g.
high/low bay indoor lighting, street
lighting, floodlighting and emergency
lighting.
Applying SMT TBs with surface-mount
reflow soldering processes greatly
simplifies LED module PCB assembly.
Connecting the conductors in lighting
fixtures was formerly often done using
hand soldering. This is often unreliable
and prone to error when using printed
circuit boards with a metal core, due to
the high degree of heat dissipation. The
optimized design of the new connector
hold-downs ensures rugged solder-pad
retention and supports reliable handling
during equipment final integration.
PCB mounting design options commonly
include a horizontal male and a discrete
wire push-in spring-cage terminal
block part. Both are made from high-
temperature LCP plastic which is
completely colour-stable after the SMT
assembly process and UV resistant for
long-term installation. As a result they
minimise shadowing effects within
the light fixture. Pluggable female,
discrete wire, push-in spring-cage cable
connectors are also available. These
have a strong but flexible locking-latch
design which is highly damage resistant
and ensures dependable mating.
Implementing TBs
method under explosive
environment
Implementing TBs under Explosion
proof environment required taking into
consideration several new aspects and
addresses it under well-known standard
such as ATEX. The risk of explosion
is particularly high in certain types of
industries, which generate inflammable
gas, inflammable liquid or inflammable
dust. Indeed, the new ATEX directive
now considers the explosion risk caused
by dust. Refineries, Petrochemical
and chemical industries. An explosion
can occur if the following factors
arecombined: Presence of inflammable
substances Presence of an ignition
source or inflammation source: fire,
flame, electrical or mechanical sparks,
overheated surfaces, electrostatic
Discharges Oxygen.
22 l New-Tech Magazine Europe