
In addition to the current-dependent overload protective device located in the connecting
cables, use the optionally available integrated devices and equipment, for example,
temperature sensor, anti-condensation heating.
6.9.3
Connecting temperature monitoring for the stator winding (depending on the
particular version)
The stator winding is monitored for thermal loading by temperature sensors embedded in the
stator winding.
The connecting cables of the temperature sensors are routed to the main or auxiliary terminal
box, depending on the version. The connection and assignment of the terminals is specified in
the circuit diagram.
WARNING
Hazard due to electric shock
The installation of the temperature sensors for the winding monitoring with respect to the
winding is implemented according to the requirements for basic insulation. The temperature
sensor connections are located in terminal boxes, safe to touch, and have no protective
separation. This is the reason that in the case of a fault, a hazardous voltage can be present
at the measuring sensor cable. When touched, this can result in death, severe bodily injury
and material damage.
● When connecting the temperature sensor to external temperature monitoring devices,
when required, apply additional measures to fully comply with the requirements set out in
IEC 60664-1 or IEC 61800-5-1 "Hazard due to electric shock”.
Use only sealing plugs, cable entries & conductor entries and thread adapters that are certified
and marked for use in the respective hazardous zone.
6.9.4
Intrinsically safe circuits for sensors or probes
Intrinsically safe equipment and electric circuits
If blue connection terminals are installed for sensors, you must connect them to certified
intrinsically safe circuits. This can otherwise result in damage.
● Carefully observe the requirements laid down in IEC / EN 60079-14 for intrinsically safe
equipment and the associated connecting cables, their selection and routing.
Electrical connection
6.9 Connecting the auxiliary circuits
1MB5 SH 400/450
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Operating Instructions, 05/2019, A5E45959221A
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