8 Operation
4.0 OPERATION
Figure 4 Operation controls and indicators
Status LED Indicators—Green and red LEDs for each protected phase provide a visual status
summary of all surge modules within device.
Full Protection LEDs—Green LEDs are illuminated only when all surge components are at
100% percent efficiency.
Reduced Protection—Red LED illuminated only when protection has been reduced by off-line
surge components such as open fuse links.
Built-In Component Integrity Test (BICIT)—While the monitoring circuitry provides visual
status during operation, the built-in test circuitry will verify that every fuse link and associated
MOV is operational. The built-in-test may be operated easily by simply pressing one push button
during normal operation. The BICIT cycles through each phase bank including neutral-ground
sending out a test request signal to all modules. If all fuse links are in intact the re d reduced-pro-
tection LED for the particular bank in test will illuminate for a two to four se conds. Should this
light stay lit for more than 5 seconds, one module in that bank has at least o ne open fuse link.
While testing, the Test LED will illuminate. Also, during the built-i n test sequence, the alarm
should sound for each bank. Pressing the alarm disable switch before or during the test will
silence the alarm.
Sonic Alarm—If one or more of the surge modules require replacement, an audible alarm is acti-
vated to draw attention to the fact that repair service is require d to restore the system to normal
operation. An audible alarm disable button is provided to silence th e alarm. The system will auto-
matically reset itself after repair.
Table 4 Monitoring features
Monitoring Features “S” Package “C” Package “D” Package
LED Status Indicators ✔✔✔
Built-In Component Integrity Test
(BICIT) ✔✔✔
Sonic Alarm ✔✔✔
Form C Dry Contacts ✔✔✔
Surge Counter ✔✔
Swell Counter ✔
Remote Monitor Panel Optional Optional Optional