Description
LC1000-S/SP7 This flash message is displayed in response to pressing
the VALUE keys while on a setpoint message with a
text entry value. The ENTER key LC1000-S/SP7 must first be pressed
to begin editing.
PRESS [ENTER] TO
REMOVE MESSAGE
This flash message is displayed for 5 seconds in
response to pressing the decimal key followed by
ENTER while displaying one of the selected default
messages in the S1 745 SETUP DEFAULT MESSAGES
SELECTED DEFAULTS menu. Pressing ENTER again
while this message is displayed removes the default
message.
PRESSED KEY
IS INVALID HERE
This flash message is displayed in LC1000-S/SP7 response to any
pressed key that has no meaning in the current
context.
RESETTING LATCHED
CONDITIONS
This flash message is displayed in response to pressing
RESET when the relay is in local mode. All active
targets for which the activating condition is no longer
present will be cleared.
SETPOINT ACCESS
DENIED (PASSCODE)
This flash message is displayed in response to pressing
ENTER while on any setpoint LC1000-S/SP7 message. Setpoint access
is restricted because the programmed passcode has
not been entered to allow access.
SETPOINT ACCESS
DENIED (SWITCH)
This flash message is displayed in response to pressing
ENTER while on any setpoint message. Setpoint access
is restricted because the setpoint access terminals
have not been connected.
SETPOINT ACCESS
IS NOW ALLOWED
This flash message is displayed in response to entering
the programmed passcode at the S1 745 SETUP
PASSCODE ALLOW SETPOINT WRITE ACCESS
setpoint. The command LC1000-S/SP7 to allow write access to
setpoints has been successfully executed and
setpoints can be changed and entered.
SETPOINT ACCESS
IS NOW RESTRICTED
This flash message is displayed in response to
correctly entering the programmed passcode at S1
745 SETUP PASSCODE ALLOW SETPOINT WRITE
ACCESS. The command to restrict access to setpoints
has been successfully executed and setpoints cannot
be changed.
The procedures contained in this section can be used to verify the correct operation of the
745 Transformer Protection System LC1000-S/SP7 prior to placing it into service for the first time. These
procedures may also be used to verify the relay on a periodic basis. Although not a total
functional verification, the tests in this chapter verify the major operating points of all
features of the relays. Before commissioning the relay, users should read the installation
chapter, which provides important information about wiring, mounting, and safety
concerns. The user should also become familiar with the relay as described in the setpoints
and actual values chapters.
Test personnel must be familiar with general relay testing practices and safety precautions
to avoid personal injuries or equipment damage.
This chapter is divided into several sections, as follows:
- GENERAL: outlines safety precautions, conventions used in the test procedures.
- TEST EQUIPMENT: the test equipment required.
- GENERAL PRELIMINARY WORK
- LOGIC INPUTS AND OUTPUT RELAYS: tests all digital and analog inputs, the
analog-to-digital data acquisition system, and relay and transistor outputs.
- DISPLAY, METERING, COMMUNICATIONS, ANALOG OUTPUTS: tests all values
derived from the AC current and voltage inputs.
- PROTECTION SCHEMES: tests all features that can cause a trip, including
differential, overcurrent, over and underfrequency elements.
- AUXILIARY PROTECTION/MONITORING FUNCTIONS
- PLACING RELAY INTO SERVICE
- SETPOINT TABLES
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