Connecting Or Disconnecting In Explosive Environments - Siemens SITRANS LR500 Series Operating Instructions Manual

Connecting
6.1 Basic safety notes
Unprotected cable ends
Risk of explosion through unprotected cable ends in hazardous areas.
• Protect unused cable ends in accordance with IEC/EN 60079-14.
Insufficient isolation of intrinsically safe and non-intrinsically safe circuits
Risk of explosion in hazardous areas.
• When connecting intrinsically safe and non‑intrinsically safe circuits ensure that isolation is
• Ensure that you observe the device approvals applicable in your country.
6.1.2

Connecting or disconnecting in explosive environments

Connecting or disconnecting in explosive environments
Connecting or disconnecting a powered device in explosive environments can lead to an
explosion.
• Connect and disconnect in non-explosive environments.
• Remove power to the device before connecting or disconnecting in explosive atmosphere.
Connecting or disconnecting device in energized state
Risk of explosion in hazardous areas.
• Connect or disconnect devices in hazardous areas only in a de-energized state.
• Install a suitable switch-off device.
Exceptions:
• Devices having the type of protection "Intrinsic safety Ex i" may also be connected in
50
WARNING
WARNING
carried out properly in accordance with local regulations for example IEC 60079-14.
WARNING
- or-
WARNING
energized state in hazardous areas.
SITRANS LR500 series with mA/HART
Operating Instructions, 03/2024, A5E51099898-AA