SAiC20z.4W is intended for protection of overhead lines with the highest voltage for equipment up to 24 kV and high short-circuit currents against induced overvoltages and their deleterious consequences.
The main field of applications implies protection of conductors and insulators along distribution overhead power lines with and without shielding wire.
This video was made in Streamer laboratory where you can see the 5 kA lightning follow current interrupting / quenching thanks to the Streamer SAiC20z.4W with Easy Quench technology inside. This Streamer Line Lightning Protection Device (LLPD) can be used for indirect lightning protection of 3 wires medium voltage overhead lines up to 24 kV or of 4 wires medium voltage overhead lines up to 21 kV. It is also possible to use this device as a direct lightning protection for substations, transformers or cables when 3 LLPDs are installed on the 3 phases of the same pole.
|Maximum system operating voltage (MSOV), kV||24|
|Maximum prospective follow current, kA||5|
|Breaking follow current*, kA||3.5|
|External air gap, mm||70±10|
|50% flashover voltage**, kV||160|
|Minimum withstand power frequency voltage**, kV|
|Lightning discharge capability (200 μs)***, C||2.4|
|High current impulse (4/10 μs), kA||65|
|UV resistance****, h||1000|
* 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
|Type of Test||Laboratory|
|Standard lightning impulse sparkover test
|Follow current interrupting test