Integrated system for safe and future-proof power distribution - Moeller

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Integrated system for safe and future-proof power distribution With power requirements increasing all over the world and the continued increasing pressure to cut costs, there is an even greater need for secure investments through which efficient planning, assembly, installation and operation are ensured. To meet these requirements, cost-efficient and standardised power distribution systems are needed that customers can adapt to the individual requirements of their projects. In short what is needed is maximum flexibility, economy and reliability. Extensive safety requirements and special standards have to be observed in the power distribution sector. The consistent use of the extensive assembly and testing regulations as stipulated by DIN EN 60439-1 (VDE 0660 Part 500): 2000-08 [1, 2] is therefore an important requirement for the reliable and safe operation of a switchgear and controlgear assembly, i.e. a type-tested (TTA) and partially type-tested (PTTA) assembly for power and service distribution boards (DIN EN 60439-3 (VDE 0660 Part 504):2002-05 [3, 4]). In compliance with DIN EN 60204-1 (VDE 0113 Part 1):1998-11 [5, 6] the switchgear and controlgear assembly, or switchboard system for short, can likewise be used as a type-tested/partially low-voltage Jutta Zacharias is head of the Power Distribution business unit at Moeller GmbH in Bonn. e-mail: jutta.zacharias@moeller.net Dipl.-Ing. Heinrich Moog is head of xEnergy product management at Moeller GmbH in Bonn. e-mail: heinrich.moog@moeller.net Picture 1. In the divide between the demand for greater safety, flexibility and load capability on the one hand, and pressure to cut costs on the other, Moeller's switchboard system is a future-proof platform for resultoriented solutions control panel for machines. Apart from the basic assembly and test requirements, the relevant standards and regulations also lay down the safety requirements for electrical equipment, personnel and system protection and also the selection and dimensioning of electrical equipment. The extensive type testing for lowvoltage switchboard systems contains the following seven tests areas: • Limit overtemperature, • Dielectric strength, • Short-circuit current capability, Jutta Zacharias • Heinrich Moog • Efficiency of the protective devices, • Creepage and air clearances, • Mechanical functions, • IP protection. The following functions are tested in the switchgear and controlgear assembly in the degree of protection for the corresponding current class: • Maximum current carrying capacity of the electrical function units, • Switching and protective devices in mechanical and electrical combination with the mounting systems including the main busbars, dropper bars and busbar links, • All system components as integral units in their functional mounting. An additional test is carried out in the protective conductor circuits of the system panels in accordance with IEC/EN 60 439-1, section 8.2.4 - Verification of the effectiveness of the protective circuit - with the following tests: • Section 8.2.4.1: Verification of the effective connection between the exposed conductive parts of the assembly and the protective circuit by measurement and • Section 8.2.4.2: Verification of the short-circuit strength of the protective circuit by test. Both tests must be verified by the manufacturer (of each) and are particularly important for personnel protection. The results for the assembly of the switchboard system are documented for practical application by system suppliers, such as in product catalogues; selection and dimensioning documents; assembly manuals; configuration and engineering tools; certification of the completed type tests for the declarations of conformity by the system supplier. The tests therefore guarantee reliable system assembly, as well as verifying the basic features with successfully completed type tests (TTA). At the same time, the reliable functioning of a switchboard system during operation is also verified – an important factor for a future-proof and reliable power supply. TTA/PTTA switchgear assemblies also include those that are engineered and assembled by local panel builders in 2 Heft 7/2004 •
xEnergy – in the divide of panel building Moeller's Kit system for the panel builder is a single-source development that has been designed and thought through to meet the needs of the panel builder. xEnergy offers outstanding efficiency, flexibility and stands out with its simplicity and functionality. Technical system features Standards DIN EN 60439-1 (VDE 0660 Part 500) Type testing TTA Internal separation Form 1 to Form 4 Rated operational voltage Ue 690V / 50Hz ... 60 Hz Rated operational current Ie to 4 000 A Rated short-time withstand resistance Icw bis 100 kA (Effektivwert), 1 s Ambient temperature 35 °C (40 °C) to 45 °C (50 °C) Degree of protection IP31/IP55 Network system TN-C / TN-C-S / TN-S / IT Colour RAL 7035 (other colours on request) Dimensions h 2 000 mm basic height without plinth, w 425/600/800/1 000/1 200 mm, d 400/600/800 mm xEnergy – technical data Mounting of Moeller IZM and NZM circuit-breakers up to 4000 A - application benefits: • Clear and symmetrical design with only one circuit-breaker per section reduces the number of busbar connections and saves mounting requirements, • Internal separation up to Form 4 increases personnel and system protection, • Circuit-breaker mounting kits for optimum assembly and packed as a unit, • Fast and direct allocation of mounting kits for the mechanical fastening of circuitbreakers, • High level of flexibility in the terminal area thanks to alternative connection options: Cable terminal system, straps or busbar adapters. Mounting of Moeller switching and protective devices up to 630 A - application benefits: • Max. 38 fixed compartment modules in one section (h = 50 mm), to 40 A • Max. 19 fixed compartment modules in one section (h = 100 mm), to 160 A • Optimum device utilisation despite high packing density • Simple module mounting to Form 2 on one mounting depth, • Flexible module mounting to Form 4 with different device mounting depths, with standard operating front, • Highly flexible combination possible for functional areas and busbars in accordance with EN 60439 (VDE 0660 Part 500) and national installation practice. xEnergy – the new system offer in panel building – application benefits of the optimised system platform up to 4 000 A: • Low number of individual parts and modules, • Suitable for universal use (DIN VDE, IEC, NF [France], UNE [Spain]), • Can be combined flexibly, • Low earth transition resistance for personnel protection, • Efficient selection and configuration using Moeller ConFix • Functionally packed into individual assemblies, supplied as flat pack • Easy and fast to install – 30 minutes per section, • Fully type-tested and designed for future requirements. accordance with binding documents and supplier specifications. The construction of partially type-tested assemblies (PTTA) involves the use of both type-tested and non type-tested functional assemblies. Test certificates • Heft 7/2004 are equally required for PTTAs. These can be provided by means of additional type testing or by the derivation of similar systems from type-tested assemblies. Additional calculations are also required depending on the type of PTTA involved: Short-circuit (DIN IEC 1117 (VDE 0660 Part 509):1993-09 [7, 8]) and temperature rise (IEC/TR 60890). 1987-07 [9]). Future-proof switchboard system – the platform for results-based solutions The project business is defining and shaping the market for low-voltage switchboard systems. End customers require individual solutions for their specific requirements with an optimum price-performance ratio. This kind of financially flexible solution can only be offered by a modular power distribution system that is based on an intelligent platform concept. The divide between ever increasing demands in terms of engineering and safety on the one hand, and cost reduction on the other can only be bridged by means of an innovative generation of switchboard systems (Picture 1). xEnergy – the new power distribution system generation xEnergy, Moeller's new integrated system range, stands for power distribution systems that are specially designed for the building infrastructure up to 4 000 A. Moeller are single-source suppliers of an intelligent system platform for switching and protective devices that panel builders can customise, assemble quickly and handle easily. Based on many years of practical experience in the building of switchgear assemblies, Moeller has developed the latest generation of switchboard systems that incorporates the latest trends and essential features. The individual switching and protective devices, the associated mounting system design and also the switchgear are combined to form one technical unit. This kind of system is both economical and reliable at the same time, as perfectly matched and type-tested functional units have been developed as a modular system. Exactly tailored function modules that have been type-tested in accordance with DIN EN 60439-1 (VDE 0660 Part 500), and available with internal separation from Form 1 to Form 4, comply with national installation requirements (DIN VDE, IEC, NF [France], UNE [Spain]) (Picture 2). The system range consists of: • Feeder and coupling sections for circuit-breakers up to 4 000 A, • Individually equipped outgoer sections with fixed compartment modules for switching and protective devices in- 3
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Integrated system for safe and future-proof power distribution - Moeller

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