PulseClosing Technology Section
Manual Override of Automatic Setting
Select the
Yes
or
No
(default) option. A test using PulseClosing Technology requires
a minimum fault current of 400 amperes ± 20% to detect a fault, and the fault current
must also be a minimum of 150 amperes above the configured
Minimum Trip
setting.
For example, 480 amperes is required with a
Minimum Trip
setting of 330 amperes or
below. The test sequence uses a varied scale for fault detection designed to increase the
probability of continuing the sequence at the beginning of the test sequence and increase
the probability of a
Close
operation at the end of the test sequence. See Figure 61.
Advanced Setup
Figure 61. The
Setup>Protection>Advanced Setup
screen.
To accomplish this, a pulse evaluation equal to or greater than 80% of the
Minimum
Trip
setting on the first test will be designated a fault, resulting in the IntelliRupter
fault interrupter remaining in the
Open
state and continuing the test sequence. On the
last test of the sequence, a pulse evaluation equal to or less than 150% of the
Minimum
Trip
setting will result in the IntelliRupter fault interrupter performing a
Close
opera-
tion. Intermediate test steps will vary between these values based on the number of
tests chosen, unless the
Manual Override of Automatic Setting
mode is set to the
Yes
option. When in
Yes
option, fault detection is based on the
PulseClosing Fault
Current Threshold
setting.
Conventional Close if PulseClosing not Available
When the
Yes
(default) option is selected, it permits a
Close
operation if the
PulseClosing
Technology
operation is not available. Selecting the
No
option will not permit a
Close
operation; no testing is performed, and the IntelliRupter fault interrupter goes into the
Lockout
state after the initial trip.
S&C Instruction Sheet 766-530 111
Protection Setup
