Overview
The document provides a comprehensive overview of Legrand's busbar systems, which are modern solutions for energy distribution in various building types. These systems are categorized into low, medium, and high power ranges, capable of handling currents from 25 A to over 6300 A.
Specifications
The busbars are designed to comply with product standards, ensuring rated current at an average room temperature of 40°C. They offer decentralized protection with junction boxes that can house various protection devices. The busbars are made with minimal insulating plastic, which is self-extinguishing and halogen-free, reducing fire hazards and electromagnetic emissions.
Advantages
Busbars provide flexibility, allowing for easy changes and adaptations to meet end-user needs. They are lighter and more compact than traditional cable systems, reducing installation time and space requirements. The systems are designed for quick installation with easy-to-use junction and fixing systems.
Quality Management
Legrand implements a strict Quality Management System, certified by Bureau Veritas according to UNI EN ISO 9001 standards. The test labs, accredited by ACAE and compliant with UNI CEI EN ISO/IEC 17025, conduct various tests to ensure product quality and compliance.
Certifications
The busbars have obtained several certifications, including LOVAG-ACAE approval, ensuring compliance with IEC 61439-6 standards. These certifications allow for global commercialization and ensure product reliability and safety.
Product Lines- LB Plus: Designed for energy and lighting distribution, available in two versions with different profiles and an IP55 protection degree.
- Minisbarre (MS): Compact solution for medium power distribution.
- Trolley System (TS-MTS): Suitable for 63 to 250 A applications.
- Super Compact (SCP): High power solutions for industrial applications, ranging from 630 to 6300 A.
- Medium Rating (MR): For medium power applications, ranging from 160 to 1000 A.
Conclusion
Legrand's busbar systems offer a flexible, efficient, and safe solution for electrical distribution in various settings, supported by rigorous quality management and international certifications.
Compliance with Standards
LBplus data ensures compliance with EU Directives on energy efficiency for both new and refurbished buildings.
Environmental Sustainability
The system reduces energy consumption and emissions of polluting gases. It emphasizes reducing existing consumption as a starting point for achieving environmental sustainability.
Performance and Accessories
LBplus data maintains the same electrical and mechanical features as the standard range, distributing rated currents from 25 to 63A. It includes two specific conductors for lighting management systems.
New Dedicated Plugs
New plugs are available for energy drawing and BUS connection, suitable for various controls and lighting management.
Lighting Management System
LBplus data integrates a BUS for lighting management, compatible with DALI and 1-10V protocols, offering flexibility and configuration options for different environments.
Technical Specifications
Includes details on straight lengths, feed units, flexible joints, and tap-off plugs. The system supports rated currents of 25-63A and complies with IEC 61439-6 standards.
Installation and Material Quality
The system is designed for easy installation with high-quality materials, ensuring compliance with technical and safety standards.
MS Range Features
The MS range offers speed, simplicity, and flexibility in installation, with tap-off boxes for up to 16 DIN modules, and compliance with IEC 61439-6 standards.
Overview
The document provides detailed technical specifications and installation guidelines for the Minisbarre (MS) range, designed for medium power distribution in various settings such as laboratories, small to medium companies, and warehouses. The MS range ensures safe and efficient power distribution with a variety of accessories and tap-off boxes available.
Specifications
The MS range includes straight elements, flexible joints, and tap-off boxes with capacities of 63A, 100A, and 160A. The components are made from galvanized steel and feature a degree of protection ranging from IP40 to IP55. The system is compliant with IEC 61439-6 standards and is designed to maintain fire-resistant properties when installed correctly.
Installation Accessories
Various installation accessories are available, including 90° angles, T-type and X-type elements, and flexible angles for different capacities. The system also includes end covers, joint covers, and suspension brackets to ensure secure installation and protection.
Tap-off Boxes
Tap-off boxes are available in multiple configurations, including empty boxes with DIN rails and boxes with fuse carriers. They are designed to connect and energize loads up to 63A and can be inserted and removed while the busbar is energized. The boxes provide a standard IP55 degree of protection.
Technical Information
The MS range features a casing made of quality galvanized steel, with dimensions of 39x97mm and four conductors. The system supports operational voltages of 400V and insulation voltages of 750V, with a frequency of 50/60 Hz. The document provides detailed electrical characteristics, including phase resistance, reactance, and impedance values.
Fire Safety and Compliance
The MS range is fire retardant in compliance with IEC 60332-3 standards. The system includes fire barrier kits for enhanced safety in installations requiring fire resistance.
Conclusion
The Minisbarre (MS) range offers a comprehensive solution for medium power distribution, with robust safety features and a wide range of accessories to accommodate various installation requirements.
Specifications:
The document outlines the specifications for feed units and busbars used in power distribution systems. Feed units are designed for copper cables with sections up to 35 mm² for 63/100A units and 70 mm² for 160A units. The MR (Medium Rating) range offers busbars from 160A to 1000A, available in both aluminum and copper conductors, and complies with IEC 61439-6 standards.
Procedures:
Installation of the MR busbars is simplified by the use of a monobloc and dynamometric nut, allowing for quick and reliable connections. The system is designed to be maintenance-free, with the monobloc compensating for thermal expansion.
Standards and Norms:
The MR range complies with IEC 61439-6 and features a protection degree of IP55. It also meets fire resistance standards with elements that provide a flame barrier (S120) and ensure functionality during a fire (E120).
Recommendations:
The MR busbars are recommended for use in industries, skyscrapers, hospitals, data centers, and shopping centers. They are particularly advantageous in vertical applications due to their design, which eliminates the need for thrust units or thermal expansion elements.
Key Features:
- High-quality materials ensure compliance with technical and safety standards.
- The MR range offers flexibility with various sizes and configurations, including painted versions upon request.
- The system is designed for easy installation and high mechanical resistance, with a glow-wire test compliance.
Installation Accessories:
The document lists various installation accessories, including tap-off boxes, elbows, and straight elements with different configurations to suit specific installation needs.
Data Summary:
The document includes tables detailing the weights and dimensions of various busbar components, specifying configurations for different current ratings and materials (aluminum and copper).
Overview: This document provides detailed specifications and configurations for various electrical components, including CEE sockets, tap-off boxes, and related accessories. It outlines the technical parameters, installation guidelines, and compatibility of these components within electrical systems.
Specifications:- CEE Sockets: Includes 3P+N+T and 2P+T configurations with current ratings of 16A and 32A. Specific item codes are provided for different setups.
- Tap-off Boxes: Available in medium rating (MR) versions, both with and without disconnecting devices. They are designed for use with MCBs and come in various configurations, including empty versions and those with fuse carriers.
- Fuses: Not included in the tap-off boxes. The document specifies the types of fuses compatible with different tap-off boxes.
Technical Parameters:- Energy Withstand: 400 x 103 A2s for tap-off boxes.
- Power Loss: Varies by version, with specific values provided for each type.
- Rated Currents: Detailed for both aluminium and copper conductors, ranging from 63A to 1000A.
- Operating and Insulation Voltage: Up to 1000V, with specific ratings for different configurations.
Installation and Usage:- Mounting: Instructions for mounting tap-off boxes, including dimensions and compatibility with busbars.
- Fastening Devices: Includes brackets and suspension systems for secure installation, with specifications for weight and dimensions.
- Safety Notes: Emphasizes that connections affecting live conductors must be isolated before installation.
Recommendations:- Ensure compatibility of tap-off boxes with existing electrical systems, particularly regarding conductor material and current ratings.
- Follow installation guidelines strictly to maintain safety and functionality.
- Consider environmental factors such as temperature and load when selecting components.
Specifications:
The document provides detailed specifications for busbar trunking systems, including protective conductor resistance and reactance, fault loop resistance and reactance, voltage drop under various power factors, Joule effect losses, fire load, weight, and dimensions. The protection degree is IP55, and mechanical resistance is IK10. The busbars are fire retardant and comply with IEC standards.
Components and Features:
The MR straight elements feature a galvanized steel casing used as protective earth, with dimensions of 75x196 and 135x196 mm. They include 4 or 5 conductors, fiberglass reinforced plastic insulators, and tap-off outlets for plug-in type tap-off boxes. The system uses a monobloc electric junction for reliable connections.
Feed Units and End Covers:
Feed units allow electrical power supply through cable lines or directly from distribution boards. They come with terminals for cables up to 150mm². End covers ensure IP55 protection at the line's end.
Fixing Supports:
Bracket supports or vertical suspension supports are used to fix the line to building structures. Specific codes are provided for different lengths and weights.
Tap-off Boxes:
These are used for energizing three-phase loads and come in plug-in and bolted versions. They feature integrated disconnection devices, padlocking capabilities, and compliance with IEC standards.
Design and Installation Guidelines:
General rules for designing rising mains include using LH end feed units, suspension brackets, and straight elements with fire barriers. Detailed instructions are provided for measuring and installing special elements.
Trolley System (TS/MTS):
The TS/MTS range is designed for moving users like cranes and assembly lines. It features quick installation, high versatility, and compliance with IEC standards. Components include straight and curved elements, feed units, and trolleys.
Standards and Compliance:
The systems comply with IEC 61439-6 and are suitable for various environmental conditions, including salt mist and damp heat tests.
Specifications:
The document outlines the specifications for busbar trunking systems, including insulation, fire resistance, and material properties. The insulation between bars is ensured by a double sheath made with polyester film, with thermal resistance options available. All plastic components are fire retardant and comply with UL94 standards.
Product Listings:
The document provides detailed listings of straight elements for transport and distribution, specifying the current ratings (In), lengths (L), and materials (Aluminum and Copper). These elements are available in various configurations to accommodate different installation requirements.
Fire Barriers:
Fire barrier elements are necessary when the busbar system crosses fire-resistant walls or ceilings. The document specifies the dimensions and types of fire barriers required for different current ratings and materials.
Expansion Elements:
Expansion elements are used to absorb thermal expansion and contraction in the busbar system. They are required for straight sections longer than 40 meters and must be installed near building expansion joints.
Phase Balancing and Inversion:Phase balancing elements are recommended for long sections to balance mutual phase reactance and impedance. Phase inversion elements are used to reverse the positions of phases and neutral, particularly in connections between
transformers and electric boards.
Feed Units:
Feed units are used at the end of lines to power the busbar using cables. They are available in right and left versions, with specific configurations for single and double bar systems.
Elbows and Special Elements:
The document also covers the dimensions and specifications for elbows and special elements, which are used to accommodate specific installation requirements.
Overview: The document provides detailed specifications and configurations for various types of elbows and T-elements used in electrical busbar systems. These components are essential for creating directional changes in busbar layouts, accommodating different installation requirements.
Horizontal Elbows: Horizontal elbows are categorized into two types based on the orientation of the neutral busbar conductor. Type 1 is a right horizontal elbow, and Type 2 is a left horizontal elbow. The document specifies that for non-standard horizontal elbows, only one side can exceed 600 mm in size.
Vertical Elbows: Vertical elbows are also divided into two types, with Type 1 having the neutral on the left and Type 2 on the right. The dimensions for standard elements are provided, and special configurations allow for one side to exceed 600 mm.
Double Elbows: Double elbows combine two horizontal or vertical elbows. The document outlines the types based on the sequence of left and right elbows. It specifies the minimum and maximum dimensions for single and double bar configurations.
Double Horizontal + Vertical Elbows: These elbows combine horizontal and vertical elements, with four possible configurations based on the orientation of each elbow. The document provides detailed dimensions and specifies that only one side can exceed 600 mm in special configurations.
Vertical T-Elements: T-elements are used to split the line into two branches. The document describes four types of vertical T-elements and provides dimensions for standard and special configurations.
Key Specifications: The document includes tables listing part numbers, material types (Aluminum or Copper), current ratings, and configurations for each type of elbow and T-element. It emphasizes the importance of adhering to specified dimensions for standard and special elements.
Notes: Special configurations are available for non-standard elements, and specific dimensions must be adhered to. For further customization, contact with the manufacturer is recommended.
Overview: The document provides technical specifications and configurations for single and double bar systems, horizontal T elements, and various connection interfaces with exit bars. It includes details on dimensions, types, and ratings for different configurations.
Single and Double Bar Specifications: - Single bar minimum/maximum dimensions: 600/1449 mm for types A, B, and C.
- Double bar minimum/maximum dimensions: 600/1449 mm for types A, B, and C.
Horizontal T Elements: - Used to split lines into two branches, combining effects of diverging elbows.
- Four types available, each with dimensions A, B, and C.
- Standard dimensions for single/double bar (A+B+C): 600+600+600 mm.
- Non-standard elements allow one side to exceed 600 mm.
Connection Interfaces with Exit Bars: - Standard and special connection interfaces available for right and left configurations.
- Standard dimensions for single/double bar (U+A): 200+300 mm.
- Non-standard elements allow one side to exceed specified dimensions.
Super Compact (SCP) Connection Interfaces: - Includes configurations with horizontal and vertical elbows.
- Single bar ratings: 630A-2000A (Al), 800A-2500A (Cu).
- Double bar ratings: 2500A-4000A (Al), 3200A-5000A (Cu).
Dimensioning and Drilling Details: - Detailed drilling specifications for coverplates and bars provided.
- Dimensions change with ratings, specified in technical information.
Overview: The document provides technical specifications and installation guidelines for Super Compact (SCP) tap-off boxes, which are bolt-on type boxes used for power distribution from busbars. These boxes are available in two types, Type 4 and Type 5, with current ratings ranging from 125A to 1250A.
Specifications:- Type 4: Available with AC23 switch disconnector and fuse carrier, with ratings from 125A to 1250A.
- Type 5: Empty versions available, also rated from 125A to 1250A.
- Rated insulating AC voltage: 1000V
- Rated impulse withstand voltage: 12kV
- Rated conditional short circuit current: 100kA
- Reference standard: CEI EN 60947-3
Installation Guidelines:- Tap-off boxes must be installed and removed when the busbar is not energized.
- Boxes cannot be installed simultaneously on both sides of the same junction.
- For operating voltages different from 400V, contact Legrand.
- Fuses are not included and should be referred to in the general Legrand catalogue.
Dimensions: Detailed dimensions are provided for both Type 4 and Type 5 boxes, including terminal dimensions and cable input specifications.
Brackets and Fixing:- Various types of brackets are available for different installation needs, including edgewise and flat installations.
- Recommended installation distance between brackets is 1.5 meters.
- Special brackets are available for installations subjected to strong vibrations, naval applications, and seismic environments.
Accessories:- End covers with IP55 protection are available for the end of the line.
- Protective bellows are recommended for interface connections on electric boards and transformers.
- Protective covers for outdoor applications are available to enhance protection beyond the standard IP55.
Additional Information: The document includes diagrams for installation examples and provides technical information on flexible braid connections for different current ratings.
Specifications:
The document outlines various specifications for cable glands and fuses, including dimensions and operating features. It lists different sizes of metric (M) and PG cable glands, specifying their diameters. It also details the characteristics of ceramic fuses, such as breaking capacity, voltage drop, and I2t values.
Procedures:
The document provides guidance on selecting cable glands and fuses, recommending consultation of the Legrand catalogue for detailed specifications. It includes a comparison table for plug-in boxes and cable glands, indicating the maximum number of glands that can be installed based on box type and flange size.
Standards and Norms:
The document references IEC 127 for ceramic fuses and CEI 64-8 for short circuit protection standards. It emphasizes the importance of selecting protection devices based on estimated short circuit currents to prevent thermal and mechanical damage.
Recommendations:
Recommendations include considering the Joule effect losses in busbars for air conditioning system sizing, and using correction coefficients for ambient temperatures different from the reference 40°C when determining busbar ratings.
Technical Information:
The document provides formulas for calculating Joule effect losses, overload protection, voltage drop, and short circuit withstand. It explains the impact of harmonics on distribution systems, highlighting the need for appropriate rating selection in their presence.
Key Data from Tables and Figures:
- The document includes tables for maximum cable gland installations, correction coefficients for ambient temperatures, and short circuit withstand ratings for aluminum and copper busbars.
- It provides formulas for calculating voltage drop and short circuit currents, considering factors like current distribution, power factor, and impedance.
Critical Information:
- Emphasizes the need for accurate calculation of power losses and voltage drops for efficient system design.
- Highlights the importance of selecting appropriate protection devices to handle estimated short circuit currents.
- Advises on the impact of harmonics on system performance and the necessity of choosing suitable busbar ratings.
Specifications:
The document outlines the rated current capacities for busbars ranging from 630 A to 5000 A. It specifies the conditions under which different busbars should be used based on Total Harmonic Distortion (THD) levels. For THD ≤ 15%, all rated currents are applicable. For 15% < THD ≤ 33%, busbars starting from 800 A are recommended, and for THD > 33%, busbars starting from 1000 A are advised. Harmonic distortion measurements are to be conducted using a network analyser.
Protection Standards:
The document details the degrees of protection against mechanical impact (IK) and intrusion (IP) as per IEC standards. The IP rating consists of two digits indicating protection against solid bodies and liquids. The IK rating defines the equipment's resistance to mechanical impacts.
Electromagnetic Emissions:
Legrand's busbar trunking systems are designed to minimize electromagnetic emissions. The document highlights that the magnetic induction emitted by these systems is significantly lower than the critical value of 3 μT, as per Italian law and other international standards. The busbar systems are preferred in environments like hospitals due to their low emissions.
Installation and Checks:
Before operation, assembly checks are recommended to ensure correct installation and component integrity. These checks include verifying the assembly direction, integrity of insulating parts, and torque of bolts. Regular checks are advised after the first year and every two years thereafter, focusing on thermal measurements and the integrity of junctions.
Technical Information:
The document provides detailed technical information on the measurement of magnetic induction and the performance of busbar systems. It includes graphs and maps illustrating magnetic induction around busbars and near junctions, emphasizing the importance of maintaining low electromagnetic emissions.
Specifications and Procedures:
1. Ensure the Monobloc is dry and free from any residues using hot air (max 80°C) and bland reactants like trichloroethylene that do not damage surface treatments.
2. Verify correct adhesion of the Monobloc to busbar conductors using a 0.05 mm feeler if necessary.
3. Check the torque of self-shearing bolts with a torque wrench calibrated at 85 Nm at ambient temperature. Adjust if necessary.
4. Conduct insulation tests at 1000 V with a minimum value of 100 MOhm for each insulated section. Test between phase and phase, phase and neutral, and phase and casing. If unsuccessful, identify and replace faulty sections or consult Legrand Technical support.
Checks on Plug-in Boxes:
1. Perform annual thermal checks on the cover near the lock using thermal sensors, pyrometers, or thermo-chambers. Record values with ambient temperature and operating current.
2. If temperature deviation exceeds 55 K or differs by more than 15 K from initial installation checks, contact Legrand Technical support.
3. Verify connection screws for correct torque (85 Nm).
Design Example:
1. The SCP line offers customization for specific requirements such as continuous current systems, stainless steel casing, and various conductor versions.
2. For undefined paths, order sections with direction changes initially and complete straight sections later.
3. Example system path measurements are provided for reference.
Data Center Application:
1. Installed in 2013, the data center uses 54 busbar lines across three floors.
2. 6 lines (SCP 3200A Al – 3P+N – IP55) supply electrical energy with 54 SCP PLUG-IN BOX 630A SWITCH DPX.
3. 48 lines (MR 400A Al – 3P+N – IP40) distribute energy to different racks with 1194 MRF PLUG-IN BOX 63A EMPTY.
Additional Notes:
1. LB PLUS and MINISBARRE systems offer solutions for light and medium power distribution.
2. The company reserves the right to change specifications and designs without notice.