Izoelektro - Model NNO 10/280 -Low Voltage Metal Oxide Surge Arrester

Code (l = 0,5 m): 20 60 50
Characteristics: The disconnecting device reacts after a certain number of strokes when in normal operation the current through the surge arrester increases over 1 mA or in case of atmospheric discharge (current bigger than 65 kA).
Installation: The position for installing NNO and MOSIPO surge arresters is decided by directives and technical regulations. They must be installed:

• on all branches and ends of low voltage overhead power lines,
• at a maximum mutual distance up to 1000 m,
• at a distance smaller than 500 m, where storms occur more often,
• in all passages from free conductors to cables and vice versa.

General data
Response time: tA < 25 ns
Ambient temperature range: T = -40°C ... +85°C
Ingress protection level: IP 67
Coat: silicone LSR
Silicone colour: grey
Tested according to standard: IEC 61643-1 and IEC 61643-11
IEC class: II
Earthing conductor: H07V-K

Technical characteristics
Uc (AC/DC): 280/350 V
Up: < 1,10 kV
W: 2450 J
Weight (l = 0,5 m): 0,0608 kg
Weight (l = 1,0 m): 0,0967 kg

The position for installing NNO and MOSIPO surge arresters is decided by directives and technical regulations.  They must be installed:

• on all branches and ends of low voltage overhead power lines,
• at a maximum mutual distance up to 1000 m,
• at a distance smaller than 500 m, where storms occur more often,
• in all passages from free conductors to cables and vice versa.