S&C IntelliRupter PulseCloser User Manual

Ground/Neg-Seq Trip
When enabled, this function allows tripping caused by a Ground Overcurrent element
or a Negative Sequence Overcurrent element. A Trip operation is commonly blocked
when work will be performed on a line, resulting in a larger-than-normal load imbalance.
This function is a convenient way to block the congured Ground Overcurrent and
Negative Sequence Overcurrent elements. This function does not activate a Ground
Overcurrent element or Negative Sequence Overcurrent element if it has not been
set in the active prole.
Test on Backfeed
This function establishes whether certain voltage conditions must be satised prior to
executing a specied test sequence after an initial trip. Test sequences are congured
on the Setup>Protection>General Prole>Testing After Initial Trip screen.
When enabled, the PulseClosing Technology or Close Test operation occurs regard-
less of whether there is system voltage present on both X and Y terminals, or only the X
or Y terminal of the IntelliRupter fault interrupter.
The Test on Backfeed mode is commonly disabled (blocked) for applications involving
distributed generation. In this instance, disabling the Test on Backfeed mode prevents
a PulseClosing Technology or Close Test after the initial trip until the distributed
generation has tripped offline.
When the Test on Backfeed mode is disabled, the IntelliRupter fault interrupter
waits for terminal X or Y voltage to fall below the Backfeed Voltage Level setting on
the Setup>General>Site-Related>System screen before proceeding with the specified
Testing After Initial Trip sequence.
When system voltage is present on one terminal and the other terminal voltage remains
above the Backfeed Voltage Level setting for more than 5 minutes, the IntelliRupter
fault interrupter goes to Lockout mode.
When the Test on Backfeed mode is disabled, this function is only enforced when
all three poles are open and not in a Pole Mismatch state. For example, not during a
Single-Phase Trip operation.
Circuit Testing
When enabled this function allows a PulseClosing Technology or Close Test operation
after an initial trip. When blocked, the IntelliRupter fault interrupter goes immediately
into Lockout mode after tripping.
Sensitive Earth Trip
When enabled, this function allows the IntelliRupter fault interrupter to trip because of
a Sensitive Earth Overcurrent element. This function does not activate a Sensitive
Earth Overcurrent element if one has not been set in the prole.
Single Phase Operation
When set to the Block mode, this function prevents the IntelliRupter fault interrupter
from performing a single phase operation event. This function does not activate
single phase operation event if it has not been set in the active prole.
For each of the command functions:
• Enter a command label that will display on the Operation screen.
• Enter an active label that will display on the Operation screen.
• Enter an inactive label that will display on the Operation screen.
S&C Instruction Sheet 766-530 27
General Setup

S&C IntelliRupter PulseCloser Specifications

General

Brand	S&C
Model	IntelliRupter PulseCloser
Category	Industrial Electrical
Language	English