6
NN odvodniki prenapetosti
LV surge arresters
1
2
3
4
5
6
9
7
8
MOSIPO splošno
MOSIPO generally
1.1 MOSIPO
1.1 MOSIPO
Namen
MOSIPO so nizkonapetostni kovinsko oksidni odvodniki
prenapetosti v silikonskem ohišju. Namenjeni so za
vgradnjo v NN vode do 1 kV kot prva stopnja zaščite pred
direktnim udarom strele.
Lastnosti
Odklopna naprava reagira:
• po določenem številu udarov, ko v normalnem
obratovanju tok skozi odvodnik
naraste nad 1 mA
• v primeru atmosferske praznitve (tok večji
od 65 kA)
Po delovanju odklopne naprave je ozemljilni vodnik
vidno ločen. V tem primeru je potrebno zamenjati
odvodnik prenapetosti MOSIPO.
Vgradnja
Mesto montaže NN odvodnikov prenapetosti tip MOSIPO
določajo pravilniki in tehnični predpisi elektrodistribucij.
Obvezno se vgradijo na:
• vse odcepe in konce nizkonapetostnih prostih vodov
• medsebojni razdalji maksimalno do 1000 m
• razdalji, manjši od 500 m, kjer so nevihte
pogostejše
Priporočljivo jih je namestiti na:
• vseh prehodih prostih vodov na kable
in obratno
Splošni podatki
• Odzivni čas t
A
: < 25 ns
• Predvarovalka ( glavna > 300A): 300 AgL
• Temperaturno območje T: -60 °C … +85 °C
• Stopnja zaščite: IP 67
• Material ohišja: silikon (UL 94 V-0)
• Testirani po standardu: IEC 61643-1
• Certifikat izdal: SIQ - Slovenija
EGU - Češka
Purpose
MOSIPO are low voltage metal oxide surge arresters in
silicone housing. They are designed to be installed in LV
power lines up to 1 kV as the first level of protection against
direct lightning strikes.
Characteristics
The disconnector reacts:
• after a certain number of strikes, when in a normal
operation the current through the surge arrester
increases over 1 mA
• in case of an atmospheric discharge (current bigger
from 65 kA)
After the disconnector has been active the grounding wire
is visibly separated. In this case it is necessary to replace the
surge arrester MOSIPO.
Installation
Place for installation of LV surge arresters type MOSIPO
is decided by directives and technical regulations of the
electrical distributors. They must be installed on:
• all branches and ends of lowvoltage overheadpower lines
• maximummutual distance up to 1000 m
• distance smaller than 500 m, where the storms occur
more often
It is recommended to place them:
• in all passages from free conductors to the cables
and vice versa
General data
• Response time t
A
: < 25 ns
• Back-up fuse (if main > 300A): 300 AgL
• Temperature range T: -60 °C…+85 °C
• Ingress protection level: IP 67
• Housing material: silicone (UL 94 V-0)
• Tested according to standard: IEC 61643-1
• Certifikate issued by: SIQ - Slovenia
EGU - Czech
Razlaga naziva
MOSIPO 15 / 440
Name interpretation
MOSIPO 15 / 440
Trajna obratovalna napetost U
c
Nazivni odvodni tok I
n
Tip
Continuous operating voltage U
c
Nominal discharge current I
n
Type
