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The portable snap earthing device for small diameters is used for protecting the workplace at electrical power line and station installations equipped with round conductors with diameters up to 16 mm by the connection with the ground electrode. The U-SM is designed for rated currents Ir1 from 4 kA up to 9 kA.
The U-SN/A portable medium 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-SN/A). Permissible operating temperature is between -25oC and +55oC.
The U-WN and U-WN/A earthing devices are intended for fast, easy and reliable earthing the high voltage lines with round conductors of diameters from 16 mm up to 32 mm, in the circuits where short circuiting current Ir1 is not higher than 4 kA; from 21 mm up to 32 mm, in the circuits where short circuiting current is not higher than 6.5 kA; from 26 mm up to 32 mm, in the circuits where short circuiting current is not higher than 9 kA. Permissible operating temperature is between -25oC and +55oC.
U1-ST special tram earthing device is designed for earthing overhead traction installations by connecting a traction conductor or auxiliary extension arm of the traction conductor to the tram rail equipped with groove.
U3-S/ROK earthing device is used for protection the workplace at ROK 6 switch bay, by connecting the fastening points of the electrical cables (from the side of cable entry of the ROK 6) to the earth clamp, for different rated currents Ir1 (maximum 1 second rated current Ir1 = 13 kA).
The UTK traction earthing device for mines is used for earthing mine traction conductor by connecting the traction line with running rail.
The Z portable short-circuiting device is designed for fast, easy and reliable short-circuiting the line conductors of power networks and indoor and out-door electrical equipment of low, medium and high voltage, for different one second rated currents Ir up to 31.5 kA. They should be used in the situations when service staff is not sure as far as the properties of the existing earthing equipment is concerned and there is no possibility to use the P earthing device extension.
The Z-NN/A portable low voltage short-circuiting devices are designed for short-circuiting line conductors of overhead lines in circuits for different rated currents Ir (maximum 1 second rated current Ir1 = 9 kA). It can work in the temperature range from -25oC and +55oC.
TheZ-SN/A portable medium voltage short-circuiting devices are designed for short-circuiting line conductors of overhead lines in circuits for different rated currents Ir (maximum 1 second rated current Ir1 = 9 kA). It can work in the temperature range from -25oC and +55oC.
