Belden HIRSCHMANN BAT450-F, Руководство пользователя

Страница: 9 / 98

Installation BAT450-F
Release 12 07/2020
9
The overall shield of a connected shielded twisted pair cable is connected
to the ground connection on the metal housing as a conductor.

Requirements for connecting electrical wires
Before connecting the electrical wires, always verify that the
requirements listed are complied with.

Requirements for connecting the supply voltage
The following requirements apply without restrictions:
 The electrical wires are voltage-free.

The cables used are permitted for the temperature range of the application case.

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.
Table 1: Requirements for connecting electrical wires
Prerequisites:
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.

The cross-section of the ground conductor is the same size as or
bigger than the cross-section of the power supply cables.
 The power supply cable is suitable for the voltage, the current and the
physical load. Hirschmann recommends a wire diameter of
0.25 mm² (AWG24) to 0.75 mm² (AWG19).
Only for device
variants featuring
supply voltage with
characteristic
value W (24 V DC): The following requirements apply alternatively:
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 suitable fuse is located in the plus conductor
of the power supply.
Regarding the properties of this fuse:
See “General technical data” on page 58.
Only for device
variants featuring
supply voltage with
characteristic
value N (110 V DC): A fuse suitable for DC voltage is located in the plus conductor of the power
supply.
Regarding the properties of this fuse:
See “General technical data” on page 58.
Table 2: Requirements for connecting the supply voltage