GE D90 Plus Instruction Manual page 457

CHAPTER 8: AUTOMATION
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D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 377: Device selected to operate
A confirmation message is displayed using the full name for the device to be controlled. If
no buttons are pressed, the control action is canceled after the select time timer expires.
The control action can be cancelled by pushing the CANCEL key. Pressing the OPEN or
CLOSE keys initiates an open or close control action for the selected device.
If control bypass has been enabled, a BYPASS key displays. Press this button to bypass the
interlocking logic for the device permitting non-interlocked control of this device. When
bypassed, control remains active for a single control operation, until the bypass time timer
expires, or the cancel button is pressed.
Non-interlocked control can result in equipment damage.
If tagging has been enabled, a TAG key also displays. When the TAG key is operated, a
small "T" displays next to the device. The open and close operations are inhibited on a
tagged device. When a device is tagged, the TAG button changes to UNTAG.
If substitution is enabled, the SUBST key displays, When the SUBST key is operated, a new
screen is presented that allows the user to enable or disable substitution. Once
substitution has been enabled, a small "S" displays next to the device. The user can now
manually change the indication of the device using the SUBST OPENED and SUBST
CLOSED keys.
Figure 378: Breaker 1 tagged
AUTOMATION CONTROL
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