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Earth clamps are used in all earthing device types. It is possible to purchase them individually, as spare parts. "Activation" indicates these clamps in a special way.
The P earthing device extension is designed for reliable connection of the earthing device with an earthing system not directly accessible in the earthing place of network, overhead and indoor electrical equipment of low, medium and high voltage in the circuits for different rated currents Ir. The highest one second rated current can not exceed 31.5 kA. The extension is an element of earthing system and fulfils the requirements of the PN-EN 61230:1999 standard.
The U portable earthing device protects the workplace at line and station electrical equipment, equipped with round conductors or flat bus-bars disconnected from the power source through the connection to the earth electrode.
The U-BG earthing device for power fuse bases is used for protecting workplaces at electrical power installations, equipped with E14, E18, E27 or E33 threaded fuse sockets, by connecting one side of the base to the earth (on the side of the thread for screwing in the fuse head). The screw cartridges work as line clamps.
The U-BM earthing device is used for protecting the workplace at electrical power installations equipped with BM type fuse bases, by connecting one side of a base (on the side of the device being earthed) with the earth electrode and at the same time electrical separation of the other side. U-BM earthing device is designed for rated currents Ir1 from 4 kA up to 9 kA and U-BM/00 for rated currents Ir1 from 4 kA up to 6.5 kA.
The U-LI10 portable earthing device is designed for earthing insulated lines equipped with bolttype terminal with diameter of 10 mm (e.g. made by “MALICO”). Maximum rated current Ir1 for rated time tr=1 second is Ir1= 4 kA. Permissible operating temperature is between -25oC and +55oC.
The U-LI11 portable earthing device is designed for earthing insulated lines equipped with bolttype terminal with diameter of 11 mm (e.g. of type TTD2 CC made by “SICAME”). Maximum rated current Ir1 for rated time tr=1 second is Ir1= 6.5 kA. Permissible operating temperature is between -25oC and +55oC.
The U-NN/A portable low voltage earthing devices are intended for earthing the conductors in circuits of overhead lines, for different rated currents Ir (the highest one second rated current shall not exceed Ir1 = 9 kA for U-NN/A). Permissible temperature of work is between -25oC and +55oC.
The U-S portable earthing device for “Bolt” type terminal is used for protecting the workplace at electrical equipment and lines equipped with “Bolt” type terminal (e.g. for RSK-6 cabinets).
The U-SD snap portable earthing device for big diameters is used for protecting the workplace at electrical power line and substation equipped with round conductors with diameters from 185 up to 525 mm2 by the connection with the ground electrode. The U-SD is designed for rated currents Ir1 from 4 kA up to 6.5 kA.
