Belden Hirschmann BAT867-R, Руководство пользователя

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Installation BAT867-R
Release 10 09/2021
11
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Requirements for connecting the supply voltage
The supply voltage is connected to the device casing through protective
elements exclusively.
The following requirements apply without restrictions:
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.
 The power supply cable is suitable for the voltage, the current and the physical load.
Hirschmann recommends a conductor cross section of 0.5 mm² to 0.75 mm² (AWG20
up to AWG18).
 The cross-section of the ground conductor is the same size as or bigger than the
cross-section of the power supply cables.
The following requirements apply alternatively:
Alternative 1 The power supply complies with the requirements for a limited power
source (LPS) according to IEC 60950-1 or PS2 according to IEC/
EN 62368-1.
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) according to IEC 60950-1 or ES1 according to
IEC/EN 62368-1.

A back-up fuse suitable for DC voltage is located in the plus conductor
of the power supply.
The minus conductor is on ground potential. Otherwise, a back-up
fuse is also located in the minus conductor.
Regarding the properties of this back-up fuse:
See “Technical data” on page 44.
Table 2: Requirements for connecting the supply voltage