GE 745 Instruction Manual page 128

S1 745 SETUP
5–32
Some options may be added while the relay is in the field. These include the analog input/
output, loss of life and restricted ground fault options. Should this be desired, contact the
factory with the 745 order code and serial number (see
CODES INSTALLED OPTIONS

The factory will supply a passcode that may be used to add the new options to the 745.
Before entering the passcode and performing the upgrade, it is important to set the
ENABLE setpoints correctly (see descriptions below). Any options that are currently
supported by the 745 as well as any options that are to be added should have the
corresponding setpoint set to "Yes". All others must be set to "No".
ENABLE
For example, if the 745 currently supports only the analog input/output option and the loss
of life option is to be added, then the
setpoint must be set to "Yes". The
LIFE
be set to "No".
• ENABLE ANALOG I/O: Select "Yes" if the upgrade options set supports the analog
input/output feature, otherwise select "No". The default value for this setpoint reflects
the current state of the option.
• ENABLE LOSS OF LIFE: Select "Yes" if the upgrade options set supports the loss of life
feature and select "No" otherwise. The default value for this setpoint reflects the
current state of the option.
• ENABLE RESTRICTED GROUND FAULT: Select "Yes" if the upgrade options set
supports the restricted ground fault feature and select "No" otherwise. The default
value for this setpoint reflects the current state of the option.
• ENTER PASSCODE: Press ENTER to begin entering the factory-supplied upgrade
passcode. This setpoint has a textual format, thus it is edited in the same manner as,
for example, the setpoints under
• UPGRADE OPTIONS: When all of the above setpoints are properly programmed, select
"Yes" and press ENTER to prompt the 745 to upgrade its options. A flash message
appears indicating the results of the upgrade. A successful upgrade may be verified
by examining
A4 PRODUCT INFO
A4 PRODUCT INFO
and SERIAL NUMBER ) and the new option(s) to be added.
setpoint and the
ENABLE ANALOG I/O
ENABLE RESTRICTED GROUND FAULT
S1 745 SETUP SCRATCHPAD

REVISION CODES

745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
REVISION

ENABLE LOSS OF
setpoint must
.
.
INSTALLED OPTIONS
