Installation GRS1020/1120/1030/1130
Release 04 01/2020
9
The supply voltage is electrically isolated from the casing.
For supply voltage connections with protective conductor connection:
First connect the protective conductor before connecting the wires for the
supply voltage.
If your device comprises a 2nd supply voltage connection of this type:
First connect the protective conductor before connecting the wires for the
supply voltages.
Shielded ground
The shielded ground wire of the twisted pairs cables is connected to the
front panel as a conductor.
Beware of possible short circuits when connecting a cable section with
conductive shield braiding.
Alternative 3
All
of the following requirements are complied with:
The power supply complies with the requirements for a safety extra-low
voltage (SELV) as per IEC/EN 60950-1.
Supply with DC voltage:
The wire diameter of the power supply cable is at least 1 mm² (North
America: AWG16) on the supply voltage input.
A fuse suitable for DC voltage is located at both voltage inputs in the plus
conductor of the power supply.
The minus conductor is on ground potential at both voltage inputs.
Otherwise, a fuse is also located in the minus conductor.
Regarding the properties of this fuse:
See “Technical data” on page 60.
Supply with AC voltage:
The wire diameter of the power supply cable is at least 0.75 mm² (North
America: AWG18) on the supply voltage input.
A fuse is located at both voltage inputs in the outer conductor of the power
supply.
The neutral conductor is on ground potential at both voltage inputs.
Otherwise, a fuse is also located in the neutral conductor.
Regarding the properties of this fuse:
See “Technical data” on page 60.
Prerequisites:
Summary of Contents for HIRSCHMANN GREYHOUND GRM Series
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