8
Installation MACH 1000
Release
04
12/2015
Supply voltage
The supply voltage is electrically isolated from the housing.
Connect only a supply voltage that corresponds to the type plate of your
device.
Every time you connect the electrical conductors, make sure that the
following requirements are met:
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 disconnecting device is clearly identified so that in the case of
an emergency, it is clear which disconnecting device belongs to
which line.
The electrical wires are voltage-free.
The ground screw on the back of the device is connected to the
protective conductor.
There is a fuse in the outer conductor (AC) or the positive
conductor (DC) of the voltage supply.
Regarding the properties of this fuse: See “General technical data”
on page 55.
Supply with DC voltage: the fuse is suitable for a DC voltage.
If the neutral conductor (AC) or the negative conductor (DC) is not
grounded: there is a fuse in each of the two wires.
The wire diameter of the power supply cable is at least 1 mm²
(North America: AWG16) on the supply voltage input.
The cross-section of the protective conductor is the same size as
or bigger than the cross-section of the power supply cables.
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