Electricity distribution and control apparatus

Tender description

Thames Water Utilities Ltd (TWUL) is intending to award a number of framework agreements for the supply of high voltage (up to 36 kV) switchgear, motor starters, transformers, associated ancillary equipment and related design and installation services. These goods and services will be used on our operational water and wastewater sites. TWUL has approximately 150 high voltage sites varying in size from a single transformer up to large and relatively complex distribution systems with generators and/or motor drives with the majority of the latter being located in and around the London area. The scope of work for lot 1A includes: the design, provision of drawings (including contractor’s drawings), manufacture, at-works testing, supply, delivery, provision of associated documentation, onsite testing and commissioning of high voltage indoor panel type switchgear up to 36 kV (up to 25 kA for 3 sec#) including any associated protection, auxiliary relays, tripping and closing batteries and chargers. The assemblies must be fully compliant with the relevant British and international standards and the relevant Energy Networks Association Technical Specifications (ENATS). The switchgear shall also have received distribution network operator (DNO) approval or will have received DNO approval prior to contract signing. The scope of work may also include the installation of the assembly on site, if this service is required for a particular project. This lot will be awarded to a sole supplier. — Maximum short circuit withstand Ik for 3 sec. The scope of work for lot 1B includes: the design, provision of drawings (including contractor’s drawings), manufacture, at-works testing, supply, delivery, provision of associated documentation, onsite testing and commissioning of high voltage indoor panel type switchgear up to 36 kV (up to 31.5 kA for 3 sec#) including any associated protection, auxiliary relays, tripping and closing batteries and chargers. The assemblies must be fully compliant with the relevant British and international standards and the relevant Energy Networks Association Technical Specifications (ENATS). The switchgear shall also have received distribution network operator (DNO) approval or will have received DNO approval prior to contract signing. The scope of work may also include the installation of the assembly on site, if this service is required for a particular project. — Maximum short circuit withstand Ik for 3 sec. The scope of work for lot 2 includes: the design, provision of drawings (including contractor’s drawings), manufacture, at-works testing, supply, delivery, provision of associated documentation, onsite testing and commissioning of high voltage outdoor type switchgear up to 11 kV including any associated protection and auxiliary relays and tripping batteries and chargers where relevant. The assemblies will be used in the water and wastewater industry and must be fully compliant with the relevant British and International Standards and the relevant Energy Networks Association Technical Specifications (ENATS). The switchgear shall also have received DNO approval or will have received DNO approval prior to contract signing. The scope may also include installation of the assembly on site, if this service is required for a particular project. This lot will be awarded to a sole supplier. The scope of work for lot 3 includes: the design, provision of drawings (including contractor’s drawings),manufacture, at-works testing, supply, delivery, provision of associated documentation, onsite testing and commissioning of high voltage motor starters up to 6.6 kV including any associated protection and auxiliary relays, together with capacitors and automatic power factor correction control equipment where relevant. The asynchronous motor starters shall include non-reversing direct on line, auto-transformer and soft start asynchronous units. The assemblies will be used in the water and waste water industry and must be fully compliant with the relevant British and International Standards. They must be capable of either being integrated into the lot 1 switchgear panels or be stand alone units. The scope may also include installation of the assembly on site, if this service is required for a particular project. This lot will be awarded to a sole supplier. The scope of work for lot 4 includes: the design, provision of drawings (including contractor’s drawings), manufacture, at-works testing, supply, delivery, provision of associated documentation, onsite testing and commissioning of power transformers, reactors and ancillary equipment for use in the water and waste water industry. The assemblies provided must be fully compliant with the relevant British and International Standards and any relevant Energy Networks Association Technical Specifications (ENATS). The scope may also include installation of the transformer, reactor and ancillary equipment on site, if this service is required for a particular project. This lot will be awarded to a sole supplier. The scope of work for lot 5 includes: project management and installation services relating to HV equipment. This may include project management, design e.g. sizing cables, specifying protection requirements, working with DNO connections and similar HV works. The successful contractor/s will require experience as a principal contractor working under the construction design management regulations. This lot will include civil works normally associated with this type of work. This lot will be awarded to two suppliers.