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Presentationof CompactNSX
circuit breakers for PrismaG-
Presentationof source
changeover system
Functional system
Functional units
Circuit breakers
A range of intelligent circuit breakers
Compact NSX improves management of electrical
installations
In addition toprotection functions, thenewgeneration
of Compact NSXmoulded-case circuit breakers
provides new features (analysis,measurements and
communication) with access to information:
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either directly on the LCDscreenof the tripunit to set
the circuit breaker or read themainelectrical values,
includingU, I, f, P(W) andE (kWh)
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or on the FDM121 or FDM128display on the front of
thePrisma switchboard (duct door with special front
plate) for quick access toagreater wealthof
information.
Acable connects thedisplay to the tripunit without any
special settings or configuration,making it easy to
personalise alarms anddisplays or readevent logs and
maintenance indicators.
Integration of Compact NSX in Prisma
Installationof Compact NSXdevices in aPrisma
functional switchboard is very easy andmadeof
a functional unit system:
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dedicatedmountingplates for Compact NSXoffer
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matchingpower connections LinergyDPdistribution
block andprefabricated connections, connection
blocks, power supply blocks)
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partitioning
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compliancewith the safety perimeter, by design.
Toensure the supply of
energy at all times, certain
electrical installations are
connected to two sources:
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normal sourceS1
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replacement sourceS2which steps in
to supply the installation if thenormal
source is not available.
Amechanical and/or electrical
interlocking systembetween two
Compact switch-disconnectors or circuit
breakers (or amixture) avoids
simultaneous connectionof the two
sources during switching.
InPrismaG, amanual changeover with
mechanical interlockingof devicesmay
be installed.
This is the simplest system. Ahuman
operator is requiredand consequently,
the transfer fromthenormal source to
the replacement source is delayed.
Amanual source-changeover system
comprises twoor threemanually
controlleddevices (circuit breakers or
switch-disconnectors) that are
mechanically interlocked.
The interlocking systemavoids
simultaneous connection (even transient)
of the two sources.
For more information on the
communication functions of
Compact NSX, see the ULP
system user manual, ref.
TRV99100, and the
CompactNSX catalogue, ref.
LVPED208001_EN.
See catalogue "Compact,
Masterpact source changeover
systems", ref. LVPED21122EN
Presentation
Presentation
A new front plate
The front of Compact NSX circuit
breakers has aneye-pleasing curved
profile,makingPrisma switchboards
evenmore attractive. Prisma front plates
aredesigned for all types of controls
(toggle,motormechanism, rotary
handle).
Installation architectures for the measurement
function
Compact NSX circuit breakers equippedwithMicrologic 5/6A
or E tripunits providemeasurements that canbe readon the
FDM121 or FDM128displaymoduleor directly on the circuit
breaker. Thismakes it possible tooptimise the space required
by the functional unit.
Installation times have alsobeen reducedwith respect to
systemwith current transformers.
What ismore, installation and connections aremade easier
because the FDM121 or FDM128may be installed:
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via adirect cut-out in aplaindoor
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onthefrontofaW600enclosureforoneorfour96x96devices
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onpartial door cut-out.
S1
S2
DD385519.eps
PB105112.eps