Page 10 - IZOELEKTRO catalogue 06-2020
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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
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• 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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