Connecting Temperature Monitoring For The Stator Winding - Siemens 1LA8 Operating Instructions Manual

Electrical connection
6.5 Connecting the auxiliary circuits
Adapting the cable glands
A plate is bolted to the terminal box enclosure via a rectangular cutout through which the
connecting cables enter. The plate is generally delivered with threaded holes and cable glands.
1. Open the auxiliary terminal box and undo the cable entry plate screws. Depending on the
2. For the undrilled version, drill the required number of holes or threads in the required size
3. Mark the cables if necessary for subsequent assignment.
4. Pull the cables through the cable glands and the cable entry plate, and connect the cables.
5. Fit the cable entry plate.
6. Make sure that the seal on the screwed sockets for the cable glands satisfies the degree
See also
Tightening torques for screw and bolt connections (Page 139)
Spare parts (Page 117)
6.5.3

Connecting temperature monitoring for the stator winding

The stator winding is monitored for thermal loading by resistance thermometers embedded in
the stator winding.
The connecting leads of the temperature sensors are routed to the main or auxiliary terminal
box. The connection and assignment of the terminals is shown on the terminal diagram in the
particular terminal box.
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 requirement "Hazard due to
electric shock", see IEC 60664-1 or IEC 61800-5-1.
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terminal box version, the cable entry plate is below a steel screening plate.
of the cable gland into the cable entry plate.
of protection.
WARNING
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2016