Lightning protection


Maximum operating voltage15 kV
Protection typeAgainst indirect lightning
Protection for line, MOA
Installation1 product per pole

The SAi10z is intended for ensuring protection of Conductors and Insulators against indirect lightning strikes, installed on Sectionand Termination Poles.

The SAi10z installed in association with Metal-Oxide-Arrester provides the best possible protection for distribution substations against lighting activity.

Medium sai10z

Operational Principle

The Operational Principle is based on the EasyQuench Technology.

Using the resistance of the ground between two poles, only one device needs to be installed per Pole.

This advantage makes the SAi10z a very cost effective solution to protect against more than 80% of the lightning issues.

Medium sai10z 2

Technical characteristics

Medium sai10z 1

Performance specifications

Maximum system operating voltage (MSOV), kV 12
Maximum prospective follow current, kA 1.2
Breaking follow current*, kA 0.7
External air gap, mm 50±10
50% flashover voltage**, kV 85
Minimum withstand power frequency voltage**, kV
Dry 30
Wet 20
Lightning discharge capability (200 μs)***, C 0.8
High current impulse (4/10 μs), kA 65
UV resistance****, h 1000
Weight, kg 1.0

* Maximum follow current that LLPD is capable of breaking (quenching) in case of shielding wire presence or 4W system with solidly grounded neutral at MSOV

** External air gap specified in the present table

*** According to IEC 60099-8

**** According to ISO 4892-2, method A, IEC 62217

Test Certificates

Type of Test Laboratory
High Current impulse test CEPRI
Lightning discharge capability test CEPRI
Follow current interrupting test STREAMER
Standard Lightning Impulse Sparkover Test STREAMER
Functioning Test STREAMER
Vibration Test STREAMER