Typical Units And Cross-Sections - ABB MNS R System Manual

Typical units and cross-sections

The ABB MNS R switchgear is de-
signed for the installation of ABB
Emax air circuit-breakers as well as
ABB Tmax and Isomax moulded-
case circuit-breakers, in all the avail-
able versions, fixed, plug-in and with-
drawable. It allows installation of the
main ABB apparatus and of the
measuring and protection instruments
available on the market, according to
different design requirements.
The switchgear allows the installation of bus ducts with various current carrying capacities
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Construction and functional characteristics
Construction solutions with ABB
Emax air circuit-breakers and ABB
Isomax and Tmax moulded-case cir-
cuit-breakers
Emax air circuit-breakers panels are
available with both top and bottom
entry design.
For modules sizing, please refer to ta-
bles at page 15.
Tmax and Isomax moulded-case cir-
cuit-breakers are installed horizontally
and vertically as well in the unit.
For modules sizing, please refer to ta-
bles at page 14.
Typical section with two superimpo-
sed Emax air circuit-breakers. The
circuit-breaker placed in the bottom
is an incoming/outgoing feeder
that can be provide with cable as
well as bus-duct connection.
The circuit-breaker placed on top
of the feeder is a bus-tie and
it connects the two main
busbar systems
The bus-duct can easily be connected to the busbar
system of the circuit-breakers in the switchgear.
Typical realisation of a structure with Emax circuit-breaker
connected in the top part to a bus-duct.
ABB SACE