MNS iS Design & Components

Switchboard Construction

MNS iS as part of the ABB Low Voltage Switchgear solution uses the well proven ABB MNS standard design aspects.

MNS aspects described in this section are fully applicable to MNS iS.

MNS system is a verified design in accordance with IEC61439-1/-2.

The consistent application of the modular principle both in electrical and mechanical design

as well as the use of standardized components allows its flexible and compact design.

Depending on operating and environmental www.abb-drive.com conditions different design levels are offered.

Notable system advantages with regard to design aspects:

Compact, space-saving design

Easy project and detail engineering through standardised components

Verified design acc. IEC 61439-1/-2

Earthquake-, vibration- and shock-proof designs are available

Easy retrofitting without the need for switchgear de-energizing

Maintenance-free busbar construction

High operational reliability and availability

Functional separation

The switchboard is divided into vertical and horizontal compartments thus separating different functional areas.

As even power cabling and control wiring are strictly separated within MNS iS, the switch-board is structured as follows:

1. Equipment compartment

All equipment, including the standard motor starter modules MStart or feeder modules MFeed in withdrawable design, is situated therein.

The compartment can be divided in horizontal and vertical sub compartments.

2. Control cable compartment

Contains the integrated control devices MControl, control cables and terminals.

3. Power cable compartment

Contains power cables and connection units.

4. Busbar compartment

Contains the MNS main busbar system and distribution bars. The distribution bars are embedded

in the Multifunction Separation Wall (MFW) which is located between the Equipment compartment and the Busbar compartment