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Electrical connection
6.7 Connecting the temperature sensor
External ground terminal
When making connections, ensure the following:
• Ensure that the connecting surface is bare and is protected against corrosion using a suitable
substance, e.g. acid-free Vaseline.
• Position the cable lug between the contact bracket and the grounding bracket; do not remove
the contact bracket pressed into the enclosure!
• Arrange the flat washer and spring washer under the bolt head.
• Use the marked connection location for the grounding conductor on the stator housing.
• Observe the tightening torque for the locking screw.
6.6.4
Size of grounding conductor screw
Table 6-4
6.7
Connecting the temperature sensor
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,
6.7.1
Connecting optional integrated devices and equipment
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 sensors, anti-condensation heating.
66
Size of grounding conductor screw
Frame size
71 ... 90
112
132 ... 160
WARNING
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".
Thread size for the grounding conductor
M4
M5
M6
Operating Instructions, 07/2020, A5E46712792A
1FU9
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