ENCLOSURES
ENCLOSURES & F
FIITTINGS
GS
SUPPLEMEN
KEY CONSIDERATIONS WHEN specifying railway trackside cabinets
KEY CONSIDERATIONS WHEN Ala lan Cook, M Foremost Electronics in Foremost Electronics investig ,MD, stiga gates th latest solutio s for e clo ensure the latest solutions for enclosure n tra sp rtao re conformity to the industry standard fully achieved. NEWAPPROAC
NEW APPROACHES 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 the heat inside the double ow, offering a
cabinet’s doublewall provides energy-efficient heat extraction using the passivemeander system,where the incre
substantial reduction in the cost of additional cooling. The passive ventilation in the ov
gy
acts as aheat exchanger, transferringmore heat fro
rease in surf ra
gap between thewalls.
requently the passivemeander cabinet design is all that is re
energy Fre
quipment cabinets for railway trackside deployment need to be ro functionalwhile offering pro vandalismand extre builders are ow
E ow-noise climate re instances va reme temp raerature re nowlooking for advanced
resistance, energy-saving, lowmaintenance and low
functions including lightweight, corrosion re
regulation. In extreme 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 rotection tested to IE C
Secure: The cabinet shoul provide the best protection against vandalismand extreme
ow-noise climate regulation.
gy-saving, low- re
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 require pro resi rotection to IP55?
Shockandvibratio tentest:Enclosure pro
rov ovideimpact re ra reliably. tected:Does the installation
need to be vandalism-proof,withanti-graffiti coating or re
ra
stanceinmobileapplications. res should
owthermsimulations: Cabinets sho rovidedwithsimulations of temperat distribution and airf assist in designing
HF shielding test: To ensure sensitive electronic systems operate re Flow pro
the cooling system rflowpatterns to
and in locatinghot spots. g:
ronmental conditions.
resistance enabling optimal efficiency a cooling.
re airflow ,
Salt spray testing: To ensure the cabin meets the re
resistance and surface ageing is tested vaporised salt solution.
Noisemeasurement: The noise level ra
/ ELECTRONICS ELECTRONICS
required life expectancy, cor ge
u r
www.4most.co.uk generated by a systemshould bemeasured to
Foremost Electronics
www.4most.co.uk 01371 811171
ELEC RO ELECTRONICS CS | SEP EMBER 201 SEPTEMBER 2016 S7 S7 ni
Climate bay testin Manufacturers should offer testing underextre enviro
re reme
Wind-tunnel testing:Ausefulmeans tomeasure
owvolumes and
u u
Figure 1: Figure 1:
The latest in Railway Trrac side Cabinets
he latest in Railway Trackside Cabinets
iinclude cabinet cooling along with the use of a
which reduces heating within the cabinetwithin the cabinet from solar radiation
from solar radiation
nclude cabinet cooling along with the use of a double exterior wall,double exterior wall, which reduces heating
re
andhas the added benefit of providing extreme reliability by re ov
refa require
This passive cooling systemrequires zero gy input and cre
re reates zero noise levels.
required to cool a system ov
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. re
fans,heat
gersorair-conditionersmayalsobe ro
romcoldweather. “For “For
applications like track control, train
lica io lik tra k con rol, tra
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
m a
Schroff-Pentair are
re leaders in Ra binet innov fully feature odular pro
m o
ost ard p
n o
o e
Their standard ecifications. rduous
workingenvironments.The
doublewall casedesigno feffers similarbenefits in pro
Railway
ovations red fixed
roducts,with
ducts tomeet the rously tested
IEC61969. Theynot mponents are based rdised
y fulfil the guidelines standard
rds for shock,
but also offer climate nandearthquake
tedto IEC68-2-1. romthe interior of the cabinet to the rface area
CHES TO HEA REMOVAL YSTEM RELIABILITY
AT REMOVAL VA res i in transportaiion rds is
SUPPLEMENT
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