12 S&C Instruction Sheet 766-540
Operating Levers and Indicators
Clearing an Electronically Applied Hot Line Tag
A
Hot Line Tag
mode applied by an IntelliLink command, by a SCADA command, or by
an IntelliLink Remote software command is normally removed using the same method by
which it was applied. However, the hookstick lever can be used to remove electronically
set
Hot Line Tag
mode as well.
Follow these steps to clear an electronically applied
Hot Line Tag
mode when it was
applied manually:
STEP 1.
Observe the amber HOT LINE TAG indicator on the protection and control
module. See Figure 9 on page 13. When a hot line tag is applied, the indicator
will flash for a ½ second every 2 seconds.
STEP 2.
Insert the hookstick into the ring on the HOT LINE TAG lever. Push up on the
lever, then pull down and push up the lever
once, without delay
. See Figure 7
on page 10.
STEP 3.
Observe the HOT LINE TAG indicator. When the
Hot Line Tag
mode is cleared,
the indicator will be off.
Follow these steps to clear an electronically applied
Hot Line Tag
mode when it was
not applied manually:
STEP 1.
Observe the amber HOT LINE TAG indicator on the protection and control
module. See Figure 9 on page 13. When a
Hot Line Tag
mode is applied, the
indicator will flash for a ½ second every seconds.
STEP 2.
Insert the hookstick into the ring on the HOT LINE TAG lever. Pull down and
push up on the lever
twice, without delay
. See Figure 7 on page 10.
STEP 3.
Observe the HOT LINE TAG indicator. When the
Hot Line Tag
mode is cleared,
the indicator will be off.
An electronically set
Hot Line Tag
mode can be removed using the HOT LINE TAG
lever. This procedure satisfies NESC 442E requirements, which allow local removal of
an electronically set
Hot Line Tag
mode when local indication of the electronic tag is
provided.
Electronically Applied
Hot Line Tag
Ground Trip Block removed—
In this mode, the
Overcurrent Protection
feature
will operate normally. When a
Ground Overcurrent Protection
element is configured
for the active profile, it will respond to a fault event. When a
Ground Overcurrent
Protection
element is not configured in the active profile, removing the
Ground Trip
Block
mode does not create a ground TCC nor does it enable the element.
Ground Trip Block set—
Enabling the
Ground Trip Block
mode will immediately
disable and reset all selected elements, even when they were timing for a fault when the
GROUND TRIP BLOCK lever was moved. The GROUND TRIP BLOCK lever is effective
for any profile: all General profiles, both Closing profiles, and the
Hot Line Tag
mode.
The elements available for selection are:
Ground
,
Negative Sequence
, and
Sensitive
Earth Overcurrent
elements. When the GROUND TRIP BLOCK lever is configured to
block circuit testing, circuit testing will immediately terminate. When the test sequence
was in the middle of an open interval when circuit testing was terminated, the sequence
will immediately go to the
Lockout
state. When the test sequence was not in an open inter-
val when the test sequence was terminated, the next trip will result in a
Lockout
state.
When the GROUND TRIP BLOCK lever is configured for an alternate General profile, the
designated General profile becomes the active profile unless the unit is testing. When
the unit is testing, the alternate General
profile does not become active until the active
test sequence has completed. Closing profiles and Hot Line Tag profiles are not affected
by the position of the GROUND TRIP BLOCK lever. SCADA or IntelliLink software com-
mands to change the General profile while using the Alternate profile are accepted, but the
IntelliRupter fault interrupter will not revert to the commanded general profile until the
GROUND TRIP BLOCK lever has been returned to the unblocked position.
