Germany - Low voltage work

Description

terranets bw is an independent transport network operator for gas. The company has been operating a gas transport system in Baden-Württemberg since 1961. With its approximately 2,700 km long pipeline network, terranets bw ensures the non-discriminatory transport of gas from Lower Saxony to Lake Constance. terranets bw has been continuously expanding its transport network for 60 years, thus ensuring security of supply at the highest level. Many cities and municipalities in Baden-Württemberg and Hesse, as well as parts of Bavaria and Switzerland, Vorarlberg, and the Principality of Liechtenstein, are now connected to the terranets bw pipeline network.To fulfill this task, tnbw operates a total of seven compressor units at two different locations in Baden-Württemberg, among other things.In 2016, terranets bw commissioned the Nordschwarzwaldleitung (NOS) pipeline, which carries natural gas from Au am Rhein to Leonberg. Based on the long-term forecasts of the expected gas demand in southern Germany, terranets bw is planning to build a new compressor station northwest of Ettlingen to meet the future requirements of natural gas transport.The compressor station to be built will increase the capacity of the NOS by compressing the natural gas to be transported to a higher pressure and making optimum use of the existing pipeline capacity. A plot of land in the south of the Karlsruhe district, municipality of Rheinstetten, is planned for the compressor station to be built.terranets bw GmbH is inviting tenders in this connection for services for the construction of the low-voltage system and electrical installation.
The services to be provided by the contractor are defined as follows:The supplies and services to be provided by the contractor shall include complete and functional plant components, supplied, assembled, tested and commissioned in accordance with the technical regulations and the client's specifications, as well as the complete electrical installation and cabling in the interior and exterior areas, including the cable routing systems, essentially consisting of:- Supply, assembly and IBN of new low-voltage switchgear, low-voltage switchgear panels, as well as subdistribution boards- Complete electrical installation work (lighting, switches, sockets, emergency stop, etc.) in the exterior areas (station areas).) in the outdoor areas (station area and armature group), as well as in all buildings, e.g.:o Energy center,o Operations building,o Hazardous material storage,o Compressor halls 1-4, FU and transformer buildings- Supply, laying and connection of low-voltage cables and all required control cables including all required cable routing systems on the station area, the armature group, as well as in all buildings.- Planning, interface and scheduling of the installation work Planning, interface and schedule coordination- Coordination with the suppliers of the medium-voltage systems & transformers, the UPS systems, the emergency power system, as well as the control technology- Calculation and design of the LV and LVSV, as well as the cabling:o Short-circuit and load flow calculation incl. protection concepto Selectivity calculationo Grounding calculationo Protection setting calculationo Cable dimensioningRequired data are to be requested and will be provided after award of contract. The Contractor is obliged to provide all relevant data in electronic form including the respective calculation parameters for further maintenance by the Client.- Preparation of an inspection/maintenance plan (incl. offer for the implementation of the services defined in the plan)- Spare parts offer for the new equipment supplied (after award of contract)- Commissioning of the equipment parts in several sections- Integration of the equipment into the equipotential bonding- Continuous and continuous coordination/construction management for his trade on site over the entire construction period/measures of his trade.- Preparation of documentation for the trades listed above- Fabrication, installation and operation- As-built documentation- Operating manuals- Supply and installation of accessories.For the construction of the low-voltage system and electrical installation described above, the following construction work is essentially to be carried out in compliance with the associated regulations:VDE 0100 Part 100 Erection of power installations with nominal voltages up to 1000 VVDE 0100 Part 410 Protective measures, protection against electric shockDIN VDE 0100-520 Erection of low-voltage systems, Part 5-52: Selection and erection of electrical equipment - cable and line systemsDIN VDE 0100-557 Erection of low-voltage systems - Part 5-557: Selection and erection of electrical equipment -Auxiliary circuitsVDE 0560 Part 46 Self-healing parallel power capacitors for a.c. systems with a rated voltage up to 1 kVVDE 0560 Part 700 Power capacitors - Capacitor banks for correction of the low-voltage power factorDIN EN 60079 / DIN VDE 0170 Potentially explosive atmospheresDIN EN 60909-0 / VDE 0102 Short-circuit currents in three-phase systems - Part 0: Calculation of currentsDIN EN 60865-1 / VDE 0103 Short-circuit currents. Calculation of the effect - Part 1 Terms and calculation methods.DIN VDE 0276 Power cablesDIN VDE 0298 Use of cables and insulated wires for power installationsDIN EN 61537 / VDE 0639 Guiding systems for cables and wires -Cable support systems for electrical installationsVDE 0110 Part 1 Insulation coordination for electrical equipment in low-voltage installations - Part 1: Principles, requirements and testsDIN EN 61439-1 Low-voltage switchgear and controlgear assemblies - Part1: General requirementsDIN EN 61439-2 Low-voltage switchgear and controlgear assemblies - Part 2: Energy switchgear and controlgear assembliesDIN EN 61439-3 Low-voltage switchgear and controlgear assemblies - Part3: Installation distributors for operation by laypersons2014/35/EU Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonization of the laws of Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits (Low Voltage Directive)2014/30/EU Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonization of the laws of Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits (Low Voltage Directive). February 2014 on the harmonization of the laws of the Member States relating to electromagnetic compatibility (EMC Directive)DIN EN 61000-6-2 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environmentsDIN EN 61000-6-4 Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission for industrial environments

Opportunity closing date

20 May 2022

Value of contract

to be confirmed