Internal ground terminal
Comply with the following instructions when connecting up:
• Ensure that the connecting surface is bare and is protected against corrosion using a suitable
substance, e.g. acid-free Vaseline.
• Arrange the spring lock washer under the screw head.
• Locate the cable lug under the clamping bracket.
• Use the terminals designated for the grounding conductor in the terminal box.
• Observe the tightening torque (Page134) for the locking screw.
External ground terminal
Comply with the following instructions when connecting up:
• Ensure that the connecting surface is bare and is protected against corrosion using a suitable
substance, e.g. acid-free Vaseline.
• Locate the cable lug between the contact bracket and the grounding bracket; do not remove
the contact bracket pressed into the enclosure.
• Arrange the at 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 (Page134) for the locking screw.
6.5 Connecting the temperature sensor/anti-condensation heater
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
IEC60664-1 or IEC61800-5-1 "Hazard due to electric shock".
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.
Electrical connection
6.5Connecting the temperature sensor/anti-condensation heater
1LE5, 1PC4 shaft heights 280 ... 355
72 Operating Instructions, 11/2022, A5E41454666A
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