＊G-CHECK remains automatically disconnected from the electric network , the equipment connected down-stream are still being supplied from the mains, nevertheless the protection against transient over-voltage would not be operative and the protector must be replaced.

＊Earth resistance monitoring
G-CHECK monitors an earth resistance value. This value is shown through the bar diagram of 0 to 500 Ohms permanently and also by a digital number if this

*Transient surge counter
G-CHECK is able to count partial and total number of transient events through the electrical network.

＊ALARMS (optional function)
Earth resistance failure alarm activation
When earth resistance value exceeds a predefined level (50 Ohms), alarm will be activated.

INSTALLATION
It is a DIN RAIL mounted format, therefore it can be easily installed in any type of electrical switchboard. It only needs the connection of L,N and PE(earth).
Considerations about the backup fuse:
In the wiring diagrams of figure.3, F1 is the fuse installed in the service mains, the backup fuse F2 may be necessary depending on the maximum discharge current of the SPD(Imax) it is necessary to install the backup fuse of the protector F2 is F1 is higher than the value indicated in the Table1, the recommended value for F2 is also indicated in that Table (according to the Imax of the SPD)