Smart Insulator Glass SI-G
Insulator and Line Lightning Protection Device in one product!
The SI-G is intended for ensuring protection of:
• Recloser and Load Break Switches
• Medium- and Low Voltage Transformer
• Underground Cables
• Conductor and Insulator against direct and indirect lightning strikes, installed on Sectionand Termination Poles.
The SI-G needs to be installed in association with an Metal-Oxide-Arrester.
The brand new SmartInsulator is a hybrid product combining properties of a LLPD and an insulator simultaneously. It is the first product in Streamer’s range meant for subtransmission and transmission lines. Each piece is based on a conventional cap-and-pin glass insulator with the unique EasyQuench technology. Depending on the rated voltage of an overhead line, different amount of pieces can be utilized.
|Nominal voltage, kV||66|
|Maximum continuous power frequency operating voltage / Rated voltage, kV||72.5|
|Quantity of SmartInsulators in a string, pcs||5|
|Minimum mechanical breaking load, kN||120|
|Radio interference level at 1,1 of maximum operating phase-to-ground voltage, at the most, Db||55|
|Power frequency withstand voltage, kV|
|Overall height, mm||730|
|Creepage distance, mm||1825 (365x5)|
|External spark gaps, mm||305|
|Voltage-time curve of MCIA string lies below voltage-time curve of insulators' string in all range of prestrike times (from tens of μs to tenths of μs), no less than, %||20|
|Prospective short-circuit current (rms), kA||5|
|Lighting discharge capability, C||2.4|
|High current impulse, kA||100|
|Weight, kg||33.5 (6.7x5)|
|Type of Test
|Power frequency withstand test||STREAMER|
|Follow Current interrupting test||STRI, STREAMER|