Details: :supply of active lightening arrestor of class 'a' for building protection as per standard nfc-17-102.it shall work on early streamer emission principle and shall be made of stainless steel with a t of 60 microseconds. a non resettable type counter should also be supplied to count the number of lighting occurrences. italso includes supply of electrolytic copper tape of 25mm x 2mm of better to connecting class a devices to theearth pit. this includes installation, testing and commissioning of class a device on top of the building. thisdevice should be installed at suitable height on top of the building using a gi mask as per the instruction of rcilengineer at site. the device should be connected to earth pit using a copper tape of 25mm x 2mm or better. thiscopper tape should be run firmly only the side of mask with the help of spacers. it shall also be ensured that thedown conductor shall not touch the building throughout. the down conductor shall be connected to the earthelectrode usin
Sector: Railways