MN008006EN Manual
Efective March 2021
NOVA LBS Load Break Switch
www.eaton.com/cooperpowerseries
15
VOLTAGE SENSING OPTION
Installation
ADVERTISEMENT
Hazardous voltage. Always use a hotstick when working with this
equipment. Failure to do so could result in contact with high voltage,
which will cause death or severe personal injury.
ADVERTISEMENT
Hazardous voltage. Always use a hotstick when working with this
equipment. Failure to do so could result in contact with high voltage,
which will cause death or severe personal injury.
ADVERTISEMENT
Hazardous voltage. Solidly ground all equipment. Failure to comply can
result in death, severe personal injury, and equipment damage.
IMPORTANT
Disconnect switches for AC control power are necessary to isolate the
control for testing and servicing.
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Hazardous voltage. If terminal connections are reversed, the internal
voltage sensing option may indicate zero voltage with the contacts
open. Do not rely on internal voltage sensing to ensure that the voltage
is zero and the line has been de-energized. Always follow proper safety
practices and use a separate detection method to verify a de-energized
condition. Failure to do so can result in contact with high voltage, which
will cause death or severe personal injury.
CAUTION
Equipment damage may occur if torque values are exceeded.
The Internal voltage sensing uses a capacitive voltage divider to provide
a low voltage input to the NOVA LBS switch control.
Refer to the Installation section of this manual for the installation
procedure for the NOVA LBS.
See manual MN008007 for more information on installing the LBC Pole
Mount control. Make the internal voltage sensing option connections
when installing the control as indicated in these Service Information
manuals.
Verify correct grounding of the NOVA switch and control prior to
making any high-voltage connections and before high-potential testing.
A proper ground connection consists of a good electrical ground
connection to the surge ground connector located on the mechanism
housing. Provide a good electrical ground connection to the control
cabinet ground.
Note
: Painted surfaces of the mechanism housing may prevent a ground
connection to the switch housing. Always provide a good electrical
connection to the mechanism surge ground connector. Poor grounding
of the mechanism housing may result in the presence of high voltage on
the mechanism housing associated with the high-voltage resistor or
capacitor connections used with internal voltage sensing.
To ensure proper installation of this cable, securely fasten the aluminum
cable coupler ring.
Figure 15.
Receptacle for NOVA LBS cable.
CAUTION
Dangerous voltage. Do not touch the voltage measurement/control
cable receptacle connections. If the NOVA LBS Load Break Switch is
energized and the voltage measurement/control cable is disconnected
from the Load Break Switch or control, a voltage will be present at the
receptacle. Contact with this voltage can cause personal injury.
The NOVA LBS switch has a 19-pin male receptacle (Figure 15) that
connects to the control via a shielded 19-pines cable. The control has a
19-pin female receptacle and its corresponding circuitry; see Figure 16.
The LBC control has a 4-pin male receptacle (Figure 16) that connects to
the Potential Transformer via a shielded 4-conductor cable.
Figure 16.
Connections of the LBS Control
Grounding
conector
19-pin receptacle
for 19-pin cable.
Cable glands for
connecting
external control /
antenna cables
Receptacle for
power supply
cable
