Explosion Hazard When Disconnecting Or Replacing Live Cables (Fm, Atex); Suitable Cables For Temperatures Above 70 °C - Cable 50 °C - 70 °C (Atex) - Siemens SCALANCE W778-1 Operating Instructions Manual

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6.2 Explosion hazard when disconnecting or replacing live cables (FM, ATEX)

6.2 Explosion hazard when disconnecting or replacing live cables
(FM, ATEX)
EXPLOSION HAZARD
Do not connect or disconnect live cables to/from the device when a flammable or
combustible atmosphere is present.
EXPLOSION HAZARD
Do not press the reset button if there is a potentially explosive atmosphere.
6.3 Suitable cables for temperatures above 70 °C - cable 50 °C -
70 °C (ATEX)
Suitable cables at high ambient temperatures
If the temperature of the cable or housing socket exceeds 70 °C or the branching point
of conductors exceeds 80 °C, special precautions must be taken.
If the device is operated at ambient temperatures of between 50 °C and 70 °C, only
use cables with a maximum permitted operating temperature of at least 80 °C.
General notes on use in hazardous areas according to UL-HazLoc
EXPLOSION HAZARD
You may only connect or disconnect cables carrying electricity when the power supply
is switched off or when the device is in an area without inflammable gas
concentrations.
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WARNING
WARNING
WARNING
WARNING
Operating Instructions, 07/2020, C79000-G8976-C450-06
SCALANCE W778-1 /W738-1