Page 10 - IZOELEKTRO catalogue 06-2020
P. 10

1 NN odvodniki prenapetosti                             LV surge arresters




            1.1   NNO in MOSIPO splošno                       1.1   NNO and MOSIPO generally
            Proizvod                                          Product
            Nizko napetostni kovinsko oksidni odvodniki prenapetosti   Low voltage metal oxide surge arresters with silicone
            so namenjeni za vgradnjo v nizko napetostne prosto   coating are designed to be installed in low voltage power
            zračne vode ali razdelilne omarice do 1 kV kot prva stopnja   lines or in junction boxes up to 1 kV as the first level of
            zaščite pred direktnim udarom strele. Varistorji nizko   protection against direct lightning strikes. Varistors of low
            napetostnih odvodnikov tipa NNO in MOSIPO so oplaščeni   voltage arresters type NNO and MOSIPO are coated with
            s silikonsko gumo, zaradi česar dosegajo izredno visoko   silicone rubber, so they have a high ingress protection
            stopnjo zaščite IP67.                             level IP 67.

            Lastnosti                                         Characteristics
            Odklopna naprava reagira:                         The disconnecting device reacts:
              •   po določenem številu udarov, ko v normalnem     •   after a certain no. of strokes when in normal operation
                obratovanju tok skozi odvodnik naraste nad 1 mA,  the current through the arrester increases over 1 mA,
              •   v primeru atmosferske praznitve (tok večji od 65 kA).    •   in case of atmospheric discharge (current bigger than 65 kA).

            Po delovanju odklopne naprave je potrebno zamenjati   After the disconnecting device has been actived, the surge
            odvodnik prenapetosti. Odklopna naprava po delovanju vidno   arrester and earthing conductor are visibly separated. It is
            loči povezavo med odvodnikom prenapetosti in ozemljitvijo.  then necessary to replace the surge arrester.

            Vgradnja                                          Installation
            Mesto montaže odvodnikov prenapetosti tipa NNO in   The position for installing type NNO and MOSIPO surge
            MOSIPO, določajo pravilniki in tehnični predpisi. Obvezno   arresters is determined by directives and technical
            se vgradijo na:                                   regulations. They must be installed:
              •   vse odcepe in zaključke nizkonapetostnih prostih vodov,    •   on all branches and ends of LV overhead power lines,
              •   medsebojni razdalji maksimalno do 1000m,      •   at a maximum mutual distance up to 1000m,
              •   razdalji < 500m, kjer so nevihte pogostejše,    •   at a distance <500m, where storms occur more often,
              •   vseh prehodih prosto zračnih vodov na kable in obratno.    •   in all passages from free conductors to cables and vice versa.

            Splošni podatki                                   General data
              •   Napetostni nivoji: 275, 280, 360, 440, 690 V    •   Voltage levels: 275, 280, 360, 440, 690 V
                                                                                             2
                                            2
              •   Ozemljitveni vodnik: H07V-K 6 mm  - črn       •   Earthing conductor: H07V-K 6 mm  - black
              •   Temperaturno območje okolja: T = -60 °C … +85 ºC    •   Ambient temperature range: T = -60 °C … +85 ºC
              •   Stopnja zaščite: IP 67                        •   Ingress protection level: IP 67
              •   Odzivni čas: tA < 25 ns                       •   Response time: tA < 25 ns
              •   Plašč: silikon LSR                            •   Coat: silicone LSR
              •   Barva silikona: NCS S 2502 - siva             •   Silicone colour: NCS S 2502 - grey
              •   IEC razred: II                                •   IEC class: II
              •   Testirani po standardu: IEC 61643-1 in IEC 61643-11    •   Tested according to standard: IEC 61643-1 and IEC 61643-11

                 HYDROPHOBIC  UV RESISTANCE  SELF-CLEANING               100 %
                                   IP 67                                 SUCCESFULLY
                                                                         TESTED       SLOVENIA
             Prednosti pred konkurenco                         Competitive advantages
             NNO in MOSIPO odvodniki prenapetosti imajo:       NNO and MOSIPO surge arresters have:
               •   stopnjo zaščite IP 67,                        •   an ingress protection level IP 67,
               •   ohišje iz silikonske gume,                    •   a housing made of silicone rubber,
               •   vedno integriran ozemljitveni vodnik,         •  an always integrated earthing conductor,
               •   po delovanju odklopne naprave dobro vidno     •   a well visible seperated conductor after
                 ločen ozemljitveni vodnik,                       operation of the disconnecting device,

             Na zahtevo kupca izdelamo odvodnike prenapetosti  At the customer’s request we produce surge arresters
             NNO in MOSIPO:                                    NNO and MOSIPO:
               •   brez ozemljitvenega vodnika,                  •   without earthing conductor,
               •   s poljubno dolžino, barvo in zakjučkom        •    withanyearthingconductor,length,colour and end
                 ozemljitvenega vodnika,                          fitting,
               •   kot tovarniški komplet po izbiri kupca.       •   as a factory set by customer's demand.




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