FEAT RE FEA ATURE
RACKS CABINETS & S, C,
ETS & ENCLOSURES KEY CONSIDERATIONS WHEN Alan Cook,AlanCook, MDForemost Electronics in Foremost Electronics investig ensure fully achieved. NEW APPROAC
NEWAPPROACHES TOHEAT INCREASEINCREAS SYST
The latest developments inRailway Trackside Cabinets include innov
ASE SYS EMRELIABIL TY Ra
ovations in cabinet
cooling including the use of a double exterior wall,whichreduces heatingwithin the cabinet fromsolar radiation. This technique also assists in remov
wall using natural air flow
oving theheat inside the double ow, offering a
cabinet’s doublewall provides energy-efficient heat extraction using the passivemeander systemwhere the incre as aheat exchanger, tra
substantial reduction in the cost of additional cooling. The passive ventilation in the ov
gy
fromthe interior of the cabinet to the gap between thewalls.
re
energy Fre
E
quipment cabinets for railway trackside deployment need to be ro functionalwhile offering pro vandalismand extre builders are ow
reme temp raerature re nowlooking for advanced ow-noise climate re
functions including lightweight, corrosion re
instances va vandalism-proofing,withanti-
graffiti coating and IP55 protectionmay be specified. Ease of access for assembly , installation and serv entry
ry prov tra ovisionmust be care rovide smoothand
For applications as diverse as track contro rainmonitoring or platformcontro for outdoor usemust pro
ronments. Component
rvice is critical and cable refully considered. rol,
rol cabinets
dependable functioning of sensitive electronics in outdoor enviro
selection should be based on IEC61969and fulfil the guidelines and standards for shock, vibration and earthquake re ideally prov 68-2- 1.
resistance and ovide climate pro When specifying ra the following key feature
Climate control: Energy temperatures.
maintenance andlow 20 20 JUNE 201 JUNE 2016 | ELEC RO rotection tested to IE C
Secure: The cabinet shoul provide the best protection against vandalismand extreme
ow-noise climate regulation.
gy-saving, low- re
ELECTRONICS CS
railway trackside cabinets res need to bemet: d ro
robust andhighly rotection from
Cabinet flexibility for future proofing.
ty: Fixed layout ormodular
res. System systems require aweight-saving, corrosion- ly ro
Windproof andweather resistant:Modern ro
resistant andhigh robust construction. Secure
rely prote
resistance, energy-saving, lowmaintenance and low
regulation. In extreme
Shockandvibrationtest:Enclosure pro
raffiti coating or require pro te
re ovideimpact re resi ra rov reliably. tected:Does the installation
need to be vandalism-proof, havewithanti- gra
rotection to IP55?
stanceinmobileapplications. res should
HF shielding test: To ensure sensitive electronic systemoperate re Flow pro
the cooling system rflowpatterns to
re reme
and in locatinghot spots. g:
ronmental conditions. re airflow
owthermsimulations: Cabinets sho rovidedwithsimulations of temperat distribution and airf assist in designing
Climate bay testin Manufacturers should offer testing underextre enviro
Wind-tunnel testing:Ausefulmeans tomeasure
owvolumes and
resistance enabling optimal efficiency ai cooling.
Salt spray testing: To ensure the cabin meets the re
resistance and surface ageing is tested vaporised salt solution.
Noisemeasurement: The noise level ra
required life expectancy corr ge
u o
www.4most.co.uk generated by a systemshould bemeasured to
Foremost Electronics
www.4most.co.uk 01371 811171
/ ELECTRONICS ELECTRONICS
u u
ni Figure 1: Figure 1:
The latest in Railway Trrac side Cabinets
he latest in Railway Trackside Cabinets
iinclude cabinet cooling
which reduces heating within the cabinet from solar radiationfrom solar radiation
nclude cabinet cooling along wialong with the use of ath the use of a double exterdouble exterior wall,ior wall, which reduces heating within the cabinet
reates zero noise levels. re
requently the passivemeander cabinet design is all that is re
andhas the added benefit of prov extreme reliability by re
refa require
rease in surface area acts ransferringmore heat ga
This passive cooling systemrequires zero gy input and cre
required to cool a syste m oviding
removing fans,which
have a fixed lifetime. In specific applications where fansmaystillbere fittedinthespacebetw Fre
redtheycanbe reshair coolingviaair-filteredfa
exc pro
xchange rov
rot ovidedfor specificwo otectingsystems fro
tweenthedoublewalls. F re
fans,heat
gersorair-conditionersmayalsobe ro
romcoldweather. “For “For
applications like track control, train
lica io ack control
cabinets for outdoor use m st provide smooth and dependable fu
monitoring or platfo cabinets fo
tio in
ng or platformcontrol for outdoor usemust
cont
provi e smooth and dependabl functioning of sensitive electronics in outdoor environments.”
f se electroni s i environments. itiv outdoor lik ai
m a
Schroff-Pentair are
re leaders in Ra binet innov fully feature odular pro
m o
ost ard p
n o t
o e
workingenvironments.The
doublewall casedesigno feffers similarbenefits in pro
Railway
ovations red fixed
roducts,with
ducts tomeet the rously tested
ecifications.Their rduous
andard
IEC61969.Theynot mponents are based rdised
y fulfil the guidelines standard
rds for shock,
but also offer climate nandearthquake
tedto IEC68-2-1.
CHES TO HEA REMOVAL YSTEM RELIABILITY
AT REMOVAL VA
KEY CONSIDERATIONS WHEN specifying railway trackside cabinets
stigates th latest solutions for enclosures in transportaion the latest solutions for enclosures in transportaion re conformity to the industry standard rds is
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