ARCA 827S.E Series, Руководство по эксплуатации

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8 Electrical connection ARCA Regler GmbH
28 / 42 Series 827S.E/X 09.2019 / 1.0
8 Electrical connection
Basic safety instructions
WARNING
Inappropriate power supply
Risk of explosion in potentially explosive areas in case of inappropriate
power supply, e.g. if alternating current is used instead of direct current.
► Connect the device in accordance with the prescribed supply and
signal circuits. The applicable regulations can be found in the certific-
ates or on the nameplate.
WARNING
Unsafe low-voltage power supply
Risk of explosion in potentially explosive areas due to voltage flashover.
► Connect the device to a low-voltage power supply with safe isolation.
WARNING
Connection of the device when live
Risk of explosion in potentially explosive areas
► Connect the device in potentially explosive areas only when switched
off.
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Exceptions: energy-restricted circuits may be connected in po-
tentially explosive areas even when live.
WARNING
Missing potential equalisation
If there is no potential equalisation, there is a risk of explosion in poten-
tially explosive areas due to equalising current or ignition sparks.
► Make sure that potential equalisation is available for the device.
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Exceptions: in the case of devices with the ignition protection
class Intrinsic Safety "Ex i" it may be possible to dispense with
potential equalisation.
WARNING
Unprotected wire ends
Risk of explosion in potentially explosive areas due to unprotected wire
ends.
► Protect unused wire ends according to IEC/EN 60079-14.