Low Voltage Systems MNS platform

Low Voltage Systems MNS platform

MNS a long successful history ABB is worldwide leader in the production of low voltage switchgears with more than 1.4 million of MNS systems installed since the introduction of this technology in the market in 1973. The realization of both flexible and compact solutions was possible thanks to a strong application of the modularity concept either for the mechanical or electrical development together with the use of unified components. During the years MNS system has become a reference of the industrial market for safety, reliability and overall quality. The huge ABB know-how about design and construction of low voltage systems for its customers is the result of a mixed experience coming from local and global markets. The extraordinary know-how together with an extended network for support and assistance all around the world turn MNS into the best choice. Main features of MNS platform switchgears are flexibility together with high technology content; through this mix it is possible to satisfy all customers requests. Some of the features proposed by MNS are: ACB and MCCB breakers with fix or withdrawable execution, power cables or bus duct entry either for the top or the bottom, special execution like anti seismic version. Safety is one of the key points for the development of ABB switchgears; in fact all the MNS can be supplied in Arc proof version. The MNS family is composed by three products that can be integrated each other: Power Center and Motor Control Center switchgears type MNS3.0 with front access for the plants where energy distribution together with control and protection of the motors are required, Power Center type MNS R for the distribution of high powers, designed with rear access and the intelligent MCC type MNS is designed to be connected with superior supervision systems like ECS and DCS, in order to be integrated in modern plants focused on automation. Thanks to high quality standards, all the MNS switchgears are suitable to be installed in industrial plants with critical conditions like steel plants, refineries, power or chemical plants.

Presence on the Italian market ABB guarantees the maximum level of service to Italian customers through the factory of San Martino in Strada in Lodi, while a local business unit is able to support the customers and satisfy their requests during all the phases of a project: tendering, engineering, construction, final test, delivery and on site activities. The experience of the Italian unit is not only limited to the local market but, due to the strong cooperation with the main national and international EPCs, several international projects have been also realized increasing the company know how. The R&D department follows the development of all the projects in order to guarantee the correct design of all the switchgears included the ones that have to be installed in special plants with critical conditions. For all the tests and relevant reports according to the international standards, ABB has its own certified test laboratory. Thanks to the big experience of San Martino in Strada R&D department, the Italian unit is also ABB worldwide technology center for the rear access MNS R switchgear. Customer focus is not only limited to the delivery of switchgear. With Service department several after sales activities like revamping, retrofitting, switchgear extensions, spare parts can be proposed to the customers.

MNS R Space optimization Main characteristic of MNS R switchgears is the rear connection for the power cables; this design has an impact on the dimensions of the switchgears reducing the total width. MNS R is mainly used as Power Center for energy distribution; in order to reduce the overall dimensions is possible to install more than one ACB in the same column without reducing the performances. This configuration does not involve any limitation of space for the auxiliary instrumentation or reduction of the area dedicated to the power cables connection. The access to the power cables is by doors that can be with or without hinges, depending from the available space in the installation room. MNS R can be joint to MCC panel type MNS3.0 or MNS is for configuration type PMCC: Power Motor Control Center. Wherever there are space limitations, like on offshore marine platforms, it is possible to install the MCC panel in back to back configuration in order to reduce the overall dimension of the switchgear. MNS R main characteristics Rated current main busbars Rated current distribution busbars Rated peak withstand current Rated short time withstand current Arc fault containment Rated operation voltage Rated frequency Segregation form External protection degree Internal protection degree up to 6300 A up to 4000 A up to 250 ka 690 Vac / 750Vcc 50 Hz / 60 Hz up to 4b IP30 / IP54 IP2X

MNS3.0 Since 40 years at your service One of the characteristic of MNS3.0 switchgears is the modular structure based on the E module (25 mm) that guarantees flexibility, compact design and reduced dimensions. MNS 3.0 offers the most suitable solution for all the applications like steel plants, paper mills, chemical oil & gas, power plants, platforms and all the applications where the maximum safety standards together with plant availability, maintenance simplicity and minimum dimensions are required. The access to the power cables for connecting all the feeders, all the maintenance functions and the installation ones can be operated from the front of the switchgear; so the MNS3.0 can be installed against the wall. In order to guarantee the maximum service continuity the motor feeders are usually in the withdrawable execution. Several motor starter configurations are available like direct on line, reverse starting, star delta, softstarters, frequency converters. To provide safety the distribution busbars are encapsulated inside the multifunction wall that segregates the phases creating a fault free zone, divides the main busbar form the other components and guarantees the IP2X also when the drawers are removed. MNS 3.0 main characteristics Rated current main busbars Rated current distribution busbars Rated peak withstand current Rated short time withstand current Arc fault containment Rated operation voltage Rated frequency Segregation form External protection degree Internal protection degree up to 6300 A up to 2000 A up to 250 ka 690 Vac / 750V cc 50 Hz / 60 Hz up to 4b IP30 / IP54 IP2X

MNS is Integrated intelligence MNS is is the first innovative intelligent Motor Control Center. It has been developed using the latest technologies and designed to be integrated into the supervision and control systems that manage the modern production plants. MNS is is front access MCC with the peculiarity to have a compartment dedicated to power cables and another one dedicated to auxiliary instrumentation, in order to increase the already high safety standards of ABB switchgears. Current and voltage measuring are performed by sensors instead of traditional transformers; the biggest advantage is the linearity of sensors signal which are not affected by saturation. Another innovation is the thermal image instead of the tradition thermal overload relay; this solution increases flexibility of the system as well as the standardization of the components. All the functions of control, communication, protection and data analysis are managed by the control unit MControl physically separated from the drawer; this construction characteristic guarantees the maximum standardization of the power parts with the advantage of a high level of interchangeability of drawer with the same power components. Inside the switchgear there is the concentrator MLink which is the connection point with the external supervision and control systems using the well known communication protocols like ModBus e Profibus. MNS is main characteristics Rated current main busbars Rated current distribution busbars Rated peak withstand current Rated short time withstand current Arc fault containment Rated operation voltage Rated frequency Segregation form External protection degree Internal protection degree up to 6300 A up to 2000 A up to 250 ka 690 Vac / 750 Vcc 50 Hz / 60 Hz up to 4b IP30 / IP54 IP2X

MNS is Condition Monitoring Everything under control In the modern plants, where the production is often 24h no stop, avoiding unexpected shut downs and reducing to the minimum the number and the duration of maintenance interventions is crucial. Maintenance is one of the biggest costs in the modern plants. This can be achieved with the asset monitoring than can optimize the maintenance process, reduce the overall costs and increase the availability of the asset. The assets monitoring is a continuous monitoring and analysis of all the data coming from the plant. MNS is Condition Monitoring is the ABB proposal for the condition monitoring; a product designed to realize proactive maintenance programs in order to reduce maintenance interventions and out of service time as much as possible and supply a performing tool for detailed analysis of the critical situations and propose the maintenance activities needed to fix the problems. The condition monitoring supplies a continuous flow of information and monitoring data about the status, the alarms and the events either of the switchgears, or the plant. Storing all the detailed information is possible, in order to have an archive of plant events history. This process provides the realization of a maintenance schedule for the interventions when they are really needed and reduces the number of preventive interventions. The asset monitoring collects on real time all the data of the controlled assets and compares them with the reference values. In case of data are out of the defined tolerances, it makes an analysis of the causes of the event and supplies the following information: - Severity of the alarm - Condition. Where the problem is located - Sub condition. Situation of the asset, where the fault is coming from - Description of the problem - Possible causes - List of the actions to fix the problem With a high amount of information to manage, communicating with the correct persons can be difficult. MNS is Condition Monitoring creates different user groups with specific profiles according the relevant needs.

Contact us ABB SACE A division of ABB S.p.A. Low Voltage Systems Frazione Cà de Bolli 26817 S. Martino in Strada (LO) - Italy Tel.: +39 0371 453 1 Fax: +39 0371 453251-453265 ABBSace.LVS_support@it.abb.com The data and illustrations are not binding. We reserve the right to modify the contents of this document on the basis of technical development of the products, without prior notice. Copyright 2009 ABB. All rights reserved. 1TTB900008B0201-11/2010 www.abb.com/mns