Installation OZD Profi 12M ...
Release
01
07/2017
7
Supply voltage
Only switch on the device when the housing is closed.
Requirements
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 (e.g., 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.
Relevant for North America:
The power cords are suitable for ambient air temperatures of at least 167 °F (75 °C). The
power cord wires are made of copper.
The wire diameter of the power supply cable is at least 0.75 mm² (North America: AWG18) on
the supply voltage input.
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 as per 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 57.
Table 3: Requirements for connecting the supply voltage
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