GE Industrial Solutions Spectra RMS Molded Case - Manual (Page 16)

GEH-702 Users Manual
15
Digital Test Kit – the EntelliGuard test kit (catalog number
GTUTK20) connects to the microEntelliGuard
TM DB-15
connector and provides 24 Vdc power to illuminate the LCD.
Portable Battery Pack – the Spectra portable battery
pack (catalog number TVPBP) in conjunction with an
adapter cable (TVPBPACC) connects to the
microEntelliGuard
TM DB-15 connector and provides 24
Vdc power to illuminate the LCD.
LED Status Indicator
The microEntelliGuard TM HMI includes a green LED status
indicator, which signals the status of the trip
unit/breaker. There are four different status conditions.
NORMAL status means the breaker and trip unit are
functioning properly and that the trip unit is NOT in a
pickup condition. PICKUP status means that one of the
over-current protective functions or protective relays
has gone into pickup and that a trip is imminent. TRIP
status means that the breaker/trip unit has tripped due
to an over-current protective function, protective relay,
or trip unit error. ERROR status can mean any number
of conditions (for example, the rating plug is missing or
an improper rating plug is installed). In the event that
the LED sequence indicates an ERROR, check the error
code in the trip unit’s status menu. To reset the LED
pattern, once the issue is corrected, hold down the right
arrow key for two seconds.
Table 14. LED Status Flash Sequence
Breaker/Trip Unit Status LED Sequence
NORMAL ON-OFF-ON-OFF (wait for 2 sec)
PICKUP ON-OFF-ON-OFF (continuous)
TRIP ON-OFF (wait 2 sec)
ERROR ON-OFF-ON-OFF-ON-OFF (wait 2 sec)
Trip Unit Operating Modes
The microEntelliGuard TM trip unit has four different
operating modes. They are SETUP, METERING, STATUS,
and EVENTS. The SETUP mode is used to make
changes to all of the adjustable parameters optioned
in the trip unit. The METERING mode displays the
current in each phase of the breaker. Trip units that
are optioned with advanced metering can display
voltage, power, and other pertinent parameters
associated with the system voltage. The STATUS mode
displays pertinent information on trip unit protection
settings, if the trip unit is in pickup mode, the position
of the breaker’s main contacts (requires installation of
auxiliary switch) and communications settings. The
EVENTS mode displays information regarding over-
current events.
Setup Mode
The following instructions describe setup procedures
for all of the available trip unit functions. All
microEntelliGuard
TM Trip Units have adjustable long
time, short time and instantaneous over-current
protection options as well as a selectable ammeter.
All other functions are optional and depend on how
the trip unit is optioned. If a specific trip unit function
has not been optioned, that function will not appear
in the display. Setting for the over current protective
parameters (long time, short time, instantaneous,
and ground fault) establish the shape of the trip unit/
breaker’s time current curve. All optioned trip unit
parameters are factory preset values (reference
appendix A for factory preset values).
Prior to setting up the trip unit, ensure that
• An appropriate rating plug is installed (the trip unit
automatically checks and records the value of the
installed rating plug and will issue an error if the
rating plug is not appropriate or missing).
• A professional engineer has performed a system
coordination study and provided the appropriate
setup values to be programmed into the trip unit
(inappropriate setup values can cause the breaker to
trip unexpectedly or not provide the intended circuit
protection).
• The LCD is illuminated via an appropriate power source.
When the LCD is first illuminated, the “home” page
displays SETUP, METERING, STATUS, EVENTS. Use the
buttons on the keypad to move up and down the menu.
When STATUS is highlighted, push the right button to
get into the SETUP screens. Use the RIGHT and LEFT
buttons to move to the various setup options. Use the
UP and DOWN buttons to change parameter values.
Any value that is changed using the UP or DOWN
buttons will flash to indicate that a change has been
made. Note: values that are changed must be saved
to memory on the screen in which they were changed.
Press and hold the ENTER button to save changes.
Failure to save setting changes before proceeding
to the next screen causes the setting to return to its
previous setting. Always confirm trip unit settings after
making changes by exiting and re-entering the SETUP
mode and rechecking each setting.