7
15kV Class Padmount VisoVac™
instruction manual
MN024004EN April 2021
Figure 14 . Visible isolation and grounding mechanism
indicator
Figure 15 . Slip clutch tool
A slip clutch tool is provided with the switchgear and is the
only tool approved for use with the isolation and grounding
operation hubs. The slip clutch on the tool prevents the
operator from applying excess torque that could damage the
internal gearing.
NOTICE
Using other tools such as an impact tool could damage
the gearing in the VisoVac .
Figure 16 . V3 series front mimic diagram
Accessories
The Padmount VisoVac switchgear is customized to order.
Therefore, each style of switchgear may be unique in how
it operates, the application it is used in, the accessories it
may contain, and the manufacturer of those accessories.
The following are the most commonly used accessories
supplied with the VisoVac.
Eaton Digitrip 1150 V Controller
Eaton’s Digitrip 1150 V is used for advanced current
and voltage protections, metering, and communication
functions.
The Digitrip 1150 V comes standard with energy harvesting
overcurrent protection capability. During loss of power or
voltage sag from a fault, the Digitrip can use the energy
of the fault to maintain protection and initiate a trip in the
absence of control power.
The controller continuously analyzes secondary current
signals from the current sensors. When the preset current
levels and time delay settings are exceeded, the controller
sends a trip signal to the trip actuator of the vacuum
interrupter. The trip actuator causes tripping of the vacuum
interrupter by providing the required mechanical force for
tripping.
The trip actuator is automatically reset each time the
vacuum interrupter opens. The current sensors, controller,
and vacuum interrupter are fully tested as a system for
time-over-current response over the entire current range up
to the interrupting rating of the vacuum interrupter.