WAGO 750-495/040-00 Series Manual page 276

276 Use in Hazardous Environments
Explosive atmosphere occurring simultaneously with assembly, installation or
repair work must be ruled out. Among other things, these include the following
activities
• Insertion and removal of components
• Connecting or disconnecting from fieldbus, antenna, D-Sub, ETHERNET or
USB connections, DVI ports, memory cards, configuration and
programming interfaces in general and service interface in particular:
•
•
Wiring (connecting or disconnecting) of non-intrinsically safe circuits is only
permitted in the following cases
• The circuit is disconnected from the power supply.
• The area is known to be non-hazardous.
Outside the device, suitable measures must be taken so that the rated voltage is
not exceeded by more than 40 % due to transient faults (e.g., when powering the
field supply).
Product components intended for intrinsically safe applications may only be
powered by 750-606 or 750-625/000-001 bus supply modules.
Only field devices whose power supply corresponds to overvoltage category I or
II may be connected to these components.
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Manual
Version 1.2.0
750-495/040-00x 3-Phase Power Measurement Module 690 V
Operating DIP switches, coding switches or potentiometers
Replacing fuses
WAGO-I/O-SYSTEM 750 XTR