Key multipliers are used for ensuring safe condition of a rail vehicle for work on electric equipment. Main function of key system is blocking and releasing keys depending on their turning, i.e. it can control and block various functions of a device such as an pneumatic valve for supply of compressed air of the pantograph drive, changing-over the device to another position, its disconnection or earthing, in relation to safe condition of other related devices in the electrical circuit. After releasing the main key, which is generally used, main lock unblocks other keys in the master board according to a predefined diagram, while the other keys serve for blocking or unblocking other devices and their functions.
Application |
|
Function |
|
Customized solution |
|
Options |
|
Advantages |
|
According to standards |
|
Degree of protection |
|
Temperature range |
|