Installation Octopus II
Release 06 10/2018
7
Requirements for connecting the supply voltage
Before connecting the supply voltage,
always
verify that the requirements
listed are complied with.
Device variant
Requirements
All variants
All
of the following requirements are complied with:
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 (for
example a switch or a plug). This disconnecting device is clearly
identified. So in the case of an emergency, it is clear which
disconnecting device belongs to which power supply cable.
Relevant for North America:
The power supply cables are suitable for ambient air temperatures of
at least 167 °F (75 °C). The power supply cable wires are made of
copper.
Exclusively for
device variants
featuring supply
voltage with
characteristic
value BB, FF, HH,
QQ:
The power supply cable is suitable for the voltage, the current and the
physical load. Hirschmann recommends a wire diameter of 0.5 mm² to
0.75 mm² (AWG20 up to AWG18).
The following requirements are
alternatively
complied with:
Alternative 1
The power supply complies with the requirements
for a limited power source (LPS) as per EN 60950-1.
Alternative 2
Relevant for North America:
The power supply complies with the requirements
according to NEC Class 2.
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.
A fuse suitable for DC voltage is located in the
plus conductor of the power supply.
The minus conductor is on ground potential.
Otherwise, a fuse is also located in the minus
conductor.
Regarding the properties of this fuse:
See “General technical data” on page 49.
Table 4:
Requirements for connecting the supply voltage
Summary of Contents for Octopus II
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