ABB MNS R, Системное руководство, Страница: 14 / 28

12 ABB SACE
Construction and functional characteristics
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.
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.
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.
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 switchgear allows the installation of bus ducts with various current carrying capacities
ABB PC30 23-11-2009, 8:14 12