Siemens ULTRAMAT 6 Series Compact Operating Instructions page 32

Connecting
4.2 Electrical connection
When positioning the analyzer, make sure that the power connector at the rear is accessible
at all times.
Note
Disconnecting means
The power supply cable also serves as the disconnecting means.
Make sure that the cable is
• clearly recognizable
• easy to reach.
The cable length must not exceed 3 m.
Electrical circuit breaker in accordance with IEC 60947-1 and IEC 60947-3
In accordance with IEC 60947-1 "Standard for low-voltage switchgear and controlgear" and IEC
60947-3 "Switches, disconnectors, fuses" you require an electrical circuit breaker for the device.
We recommend commercially available automatic circuit breakers.
Ex analyzers
The following applies to all devices in the hazardous area:
Connect the device to the equipotential bonding (see image below, lower arrow). To connect
the equipotential bonding there is a M4 screw with spring washer at the back of the device to
which a ring cable lug has to be connected.
Ex devices may only be connected and disconnected when in a de-energized state. This also
applies to connections via D-sub plugs. Particular reference is made here to the PROFIBUS DP
connection:
The bus must be switched off when the plug on the analyzer is connected or disconnected.
The plug-in connectors must be mechanically locked. This applies in particular to the power
plug which has to be secured with the safety bracket.
32
Compact Operating Instructions, 01/2024, A5E45779144002-AB
Series 6 and ULTRAMAT 23