Xtender XTS 900-12 User Manual
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Studer Innotec SAXtenderUser manual V4.6.0 164 CABLINGThe connection of the Xtender inverter / charger is an important step of the installation.It may only be carried out by qualified personnel and in accordance with the applicable localregulations and standards. The installation must always comply with these standards.Pay attention that connections are completely tightened and that each wire is connected at theright place.All cables must be insulated. The IEC/EN 62109-1 norm states requires that the cables must beinsulated with PVC, TFE, PTFE, FEP, neoprene or polyimide.4.1 CHOICE OF SYSTEMThe Xtender may be used in different system types, each of which must meet the standards andparticular requirements associated with the application or site of installation. Only an appropriatelyqualified installer can advise you effectively on the applicable standards with regard to the varioussystems and the country concerned.Examples of cabling are presented in appendix I of this manual, fig. 5 and following. Please carefullyread the notes associated with these examples in the tables on p. 33 and following.4.1.1 Hybrid stand-alone systemsThe Xtender can be used as a primary supply system for off-grid sites where a renewable energysource (solar, wind or hydraulic) is generally available and a generator is used as backup. In this case,batteries are generally recharged by a supply source such as solar modules, wind power or smallhydropower systems. These supply sources must have their own voltage and/or current regulationsystem and are connected directly to the battery. (Example, fig. 11)When the energy supply is insufficient, a generator is used as a back-up energy source. This allowsthe batteries to be recharged and direct supply to consumers via the Xtender transfer relay.4.1.2 Grid-connected back-up systemsThe Xtender can be used in a back-up system, also known as an uninterruptible power supply (UPS)– enabling a reliable supply to a site connected to an unreliable network. In the event of aninterruption to the energy supply from the public network, the Xtender, connected to a battery,substitutes the faulty source and enables a support supply to the users connected downstream. Thesewill be supplied as long as the energy stored in the battery is sufficient. The battery will quickly berecharged at the next reconnection to the public grid.Various application examples are described in figs. 8a – 8c in appendix 1.4.1.3 Integrated mobile systemsThese systems are meant to be temporarily connected to the grid and ensure the supply of themobile system when this is disconnected from the grid. The main applications are for boats, servicevehicles and leisure vehicles. In these cases, two separate AC inputs are often required, oneconnected to the grid and the other connected to an on-board generator. Switching between twosources must be carried out using an automatic or manual reversing switch, conforming to theapplicable local regulations. The Xtender has a single AC input.Various application examples are described in figs. 10a – 10b – 10c.4.1.4 Multi-unit systemsWhatever system is selected, it is possible to realise systems composed of several units of the sametype and the same power output. Up to three Xtender in parallel or three extenders forming a three-phase grid or three times two or three Xtender in parallel forming a three-phase / parallel grid, maybe thus combined.The use of Xtenders in a UPS back-up system must be carried out by qualified personnel whohave been checked by the responsible local authorities. The diagrams in the appendix aregiven for information and as a supplement. The applicable local standards and regulationsmust be adhered to. |
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