CHAPTER 5: SETPOINTS OVERVIEW
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 5–5
A hardware jumper must be installed across the setpoint access terminals on the back of
the relay to program new setpoints using the front panel keys. When setpoint
programming is via a computer connected to the communication ports, no setpoint
access jumper is required.
Passcode protection may also be enabled. When enabled, the 745 requests a numeric
passcode before any setpoint can be entered. As an additional safety measure, a minor
self-test error is generated when the passcode is entered incorrectly three times in a row.
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