6
Installation RED25
Release 01 02/2015
National and international safety regulations
Verify that the electrical installation meets local or nationally applicable
safety regulations.
Grounding the device
Grounding the device is by means of a separate ground connection on the
device.
Ground the device before connecting any other cables.
Disconnect the grounding only after disconnecting all other cables.
The overall shield of a connected shielded twisted pair cable is connected
to the ground connector on the front panel as a conductor.
Requirements for connecting electrical conductors
Before connecting the electrical conductors,
always
verify that all of
the requirements listed are fulfilled:
All
of the following requirements are fulfilled:
The electrical wires are voltage-free.
The cables used are permitted for the temperature range of the application case.
Relevant for North America:
Use 60/75 or 75 °C copper (Cu) wire only.
Table 1:
General requirements for connecting electrical conductors
All
of the following requirements are fulfilled:
The voltage connected meets the requirements for a safety extra-low voltage (SELV) as per
IEC/EN 60950-1.
The connected voltage is limited by a current limitation device or a fuse.
Observe the electrical threshold values for the signal contact.
See “General technical data” on page 32.
Table 2:
Requirements for connecting the signal contact
Relevance
Requirements
Absolutely relevant
All
of the following requirements are fulfilled:
The supply voltage corresponds to the voltage specified on the
type plate of the device.
The power supply conforms to overvoltage category I or II.
The power supply has an easily accessible disconnecting device
(e.g., a switch or a plug). This disconnecting device is clearly iden-
tified. So in the case of an emergency, it is clear which discon-
necting device belongs to which power supply cable.
The wire diameter of the power supply cable is at least 0.75 mm²
(North America: AWG18) on the supply voltage input.
The cross-section of the ground conductor is the same size as or
bigger than the cross-section of the power supply cables.
Table 3:
Requirements for connecting the supply voltage
Summary of Contents for Hirschmann RED25 Series
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