14
Effective January 2017
NOVA
®
15i, NOVA 27i, and NOVA 38i; Three-phase
microprocessor-controlled; installation and operation
instructions (S280-43-1)
Instructional Literature
IL0104001E
The electrical connectors of the recloser, control, and cable must
be clean and dry. Contaminated surfaces may be cleaned with
denatured alcohol and wet connector surfaces may be dried with a
heat gun. Dry surfaces are particularly important for the internal
voltage sensor cable connections. The accuracy of the sensors can
be influenced by moisture contamination.
Connect control cables, power cables, and sensor cables to the
control. Verify that the proper cable/receptacle connections are
made. Improper cable connections can result in damage to the
recloser and/or control.
Complete the control programming before making the high-voltage
line connections. See the
Operation
section of this manual.
Make appropriate electrical connections to the terminals of the
recloser. Verify correct load-side (vertical bushings) and source-side
(horizontal bushings) terminal connections. This is required for
correct operation of the internal voltage sensor. Energize recloser
and confirm the voltage outputs in the control.
When the recloser is energized, the output of the voltage sensor in
6 V, based upon the Form 6/FXD control’s input impedance. If the
sensor cable is disconnected at either the control or the recloser,
the voltage sensing output signal is 250 V ac. The receptacles on
both the NOVA i recloser and the voltage sensing cable (control
end) are 4-pin / 12-pin female connectors to minimize accidental
contact with the voltage sensor outputs. The recloser control input
impedance to the voltage sensors lowers the voltage to 6 V during
normal operation.
Equipment misoperation. Verify all connector pins and both mating
interface surfaces are clean and dry before connecting cables. Voltage
sensing errors can result from contamination. Failure to comply can
result in control and recloser misoperation.
CAUTION
Equipment Misoperation. Do not connect this control to an energized
recloser until all control settings have been properly programmed and
verified. Refer to the programming information for this control. Failure to
comply can result in control and recloser misoperation, equipment
damage, and personal injury.
CAUTION
Figure 15.
Form 6/FXD control voltage sensor receptacle..
Internal Voltage Sensor
Receptacle
Voltage Sensor
Receptacle
