Low voltage distribution systems

A low voltage distribution system typically comprises of items such as connection to low voltage supply, switchgear and distribution circuit cabling.

Uniclass2015 - Ss_70_30_45_45 Low voltage distribution systems
Reference Notes
NBS Code

70-70-45/110 Low voltage distribution system

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NRM1

5.8.1 Electrical mains and sub-mains distribution (default)

Rules of measurement | Cost benchmarks

8.7.4 Electricity distribution to external plant and equipment

Rules of measurement | Cost benchmarks

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Download manufacturer object defintion template

Manufacturer Product Data template

Complete this electronic spreadsheet to ensure that your Low voltage distribution systems product information meets the requirements of Level 2 BIM. This is important as it will enable your customers to select, specify and use your products within the BIM environment. Once you have completed this template you can host it on your own website or distribute it to your customers. Please note that we do not host completed product data templates within the BIM Toolkit.

1

Requirement

Visual information to assist the client in identifying project objectives. Expect drawings and diagrams showing important parameters or constraints. The intention is to develop and understand the initial project brief and Client requirements.

Purpose of information

To provide a visual indication of proposals at a Feasibility stage identifying key requirements.

Plan
Model

The above illustrations are for Low voltage distribution systems from the NBS section Low voltage distribution systems. This is indicative of the LOD requirements for Low voltage distribution systems.

2

Requirement

Visual information to provide general principles of the design. Showing arrangement of system with their relationship to internal and external context, and key project criteria to suit a clients brief. General descriptions would be expected to communicate principles of materiality, scope, colour and context. Expect strategic coordination with other professions to show general principles of the design.

Purpose of information

To provide a visual representation of proposals at a Concept stage and support general spatial coordination.

Plan
Model

The above illustrations are for Low voltage distribution systems from the NBS section Low voltage distribution systems. This is indicative of the LOD requirements for Low voltage distribution systems.

3

Requirement

Visual information to provide developed principles of the design to a greater level of detail. Developed coordination between all professions. Visual development showing coordination for general size and primary relationships between different elements of the construction. Can form a brief for a specialist sub-contractor or fabricator to progress with their technical design, fabrication and installation. This would be expected to include critical dimensional coordination, performance requirements and qualities of finish.

Purpose of information

To provide a visual representation of proposals, confirming brief for technical Design stage supporting full spatial coordination.

Plan
Model

The above illustrations are for Low voltage distribution systems from the NBS section Low voltage distribution systems. This is indicative of the LOD requirements for Low voltage distribution systems.

4

Requirement

Visual information to provide fixed principles of the design supporting procurement. Developed coordination between all professions. Visual representations showing coordination for general size and relationships between different elements of the construction. Graphical representation of system, dimensionally accurate indicating primary performance characteristics. Graphical information represented may alter dependant on visual information to be produced, eg: Scope of work drawings, setting out, floor loading etc Typical / Installation details separately produced linked to model element and adjacent constructions.

Purpose of information

To provide a visual representation of proposals at a Technical Design stage supporting full spatial coordination.

Plan
Elevation
Model

The above illustrations are for Low voltage distribution systems from the NBS section Low voltage distribution systems. This is indicative of the LOD requirements for Low voltage distribution systems.

5

Requirement

Visual information to provide full information to support construction / installation. Developed coordination between all professions. Visual representations showing final coordination for size and relationships between different elements of the construction. Graphical representation of system, dimensionally accurate indicating primary performance characteristics and sufficient information to support installation. Typical / Installation details separately produced linked to model element and adjacent constructions.

Purpose of information

To be updated during the construction process to reflect the final design, and to provide a future reference to sit alongside the O&M Manuals.

Plan
Elevation
Model

The above illustrations are for Low voltage distribution systems from the NBS section Low voltage distribution systems. This is indicative of the LOD requirements for Low voltage distribution systems.

Download manufacturer object defintion template

Manufacturer Product Data template

Complete this electronic spreadsheet to ensure that your Low voltage distribution systems product information meets the requirements of Level 2 BIM. This is important as it will enable your customers to select, specify and use your products within the BIM environment. Once you have completed this template you can host it on your own website or distribute it to your customers. Please note that we do not host completed product data templates within the BIM Toolkit.

2

Provide an outline description of the deliverable.

Name Definition
Description A description of the type of object to detail any design intent.
3

Provide information relevant to the specific performance of the deliverable. Information to specify the completion (cleaning, testing, spares, training...) of the deliverable should also be provided in the associated specification.

Name Definition
Design of low voltage distribution systems System designer, Design and Standard.
Low voltage distribution circuit cables generally Proposed selection of low voltage distribution cables, Conductor sizes (minimum) and Cable sizes not stated.
Selection of conduit, trunking and ducting Standard, Requirement and Conduit, trunking and ducting sizes not stated.
Grading study Scope, Fault calculations and Protective devices.
Input power supply characteristics Supply impedance, Earthing type and Nominal voltage.
Service conditions for low voltage switchgear and controlgear assemblies Service conditions.
Service conditions and special performance requirements for uninterruptible power supply (UPS) equipment Special performance requirements, Compliance with specified performance and Mean time between failures.
Performance of power factor correction equipment Power factor when corrected, Capacitor bank size and number of stages and Power factor equipment sizing calculations.
4

Provide information relevant to the specific child products of the deliverable to allow suitable products from manufacturers to be selected. Information covering the completion and execution of the deliverable and its child products should also be provided.

Name Definition
Connection to low voltage supply The Connection to low voltage supply of the Low voltage distribution systems.
Switchgear Products such as Cable distribution cabinets.
Distribution circuit cabling Products such as Split concentric PVC insulated and sheathed cables.
Cable accessories Products such as Cable bands.
Containment Products such as Cable baskets.
Containment accessories Products such as Conduit fittings.
Rewireable installation The Rewireable installation of the Low voltage distribution systems.
Concealed installation The Concealed installation of the Low voltage distribution systems.
Monitoring and metering Products such as Analogue metering equipment.
Power conditioning equipment Products such as Active electrical filters.
Accessories Products such as Battery shelving racks.
Electrical identification Products such as Electrical diagrams.
5

Provide information relevant to the specific child products of the deliverable to allow for purchasing. Information covering the completion and execution of the deliverable and its child products should also be provided.

Name Definition
Connection to low voltage supply The Connection to low voltage supply of the Low voltage distribution systems.
Switchgear Products such as Cable distribution cabinets.
Distribution circuit cabling Products such as Split concentric PVC insulated and sheathed cables.
Cable accessories Products such as Cable bands.
Containment Products such as Cable baskets.
Containment accessories Products such as Conduit fittings.
Rewireable installation The Rewireable installation of the Low voltage distribution systems.
Concealed installation The Concealed installation of the Low voltage distribution systems.
Monitoring and metering Products such as Analogue metering equipment.
Power conditioning equipment Products such as Active electrical filters.
Accessories Products such as Battery shelving racks.
Electrical identification Products such as Electrical diagrams.
6

Provide the information specific to the installed deliverable that is required for operation and maintenance. Information covering the detailed maintenance should also be provided in the associated PDF manuals.

Name Definition
Asset type An indication of whether the object is fixed or movable.
Manufacturer Email address for the organisation responsible for supplying or manufacturing the object
ModelNumber The product, item or unit number assigned by the manufacturer of the object.
Warranty guarantor (parts) Email address for the organisation responsible for the parts warranty.
Warranty duration (parts) Duration of parts warranty.
Warranty guarantor (labour) Email address for the organisation responsible for the labour warranty.
Warranty duration (labour) Duration of labour warranty.
Warranty duration unit Duration of warranties (typical value is 'years').
Replacement cost An indicative cost for unit replacement.
Expected life The typical service life of the object.
Duration unit Duration of expected life (typical value is 'years')
Warranty description Description of the warranty content and any exclusions.
Nominal length Typically the larger or primary horizontal dimension.
Nominal width Nominal width of product, typically the characteristic or secondary horizontal or characteristic dimension.
Nominal height Typically the vertical or secondary characteristic dimension.
ModelReference The name of the object as used by the manufacturer.
Shape Characteristic shape of product.
Size Characteristic size of product.
Colour Characteristic or primary colour of product.
Finish Characteristic or primary finish of product.
Grade Standard grading which the product corresponds.
Material Characteristic or primary material of product.
Constituents Optional constituent features, parts or finishes.
Features Other important characteristics or features relevant to product specification.
Accessibility performance The accessibility issue(s) which the object satisfies.
Sustainability performance Description of the sustainability issue(s) which the object satisfies
Code performance The code compliance requirement(s) which the object satisfies
Serial number The serial number assigned to an occurrence of a product by the manufacturer (per instance).
Installation date The date that the manufactured item was installed (per instance).
Warranty start date The date on which the warranty commences.
Tag number The tag number assigned to an occurrence of a product by the occupier (per instance).
Bar code The identity of the bar code (or rfid) given to an occurrence of the product (per instance).
Asset identifier The identification assigned to an asset that enables its differentiation from other assets.