GE D90 Plus Instruction Manual page 457

CHAPTER 8: AUTOMATION
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D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 374: 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 in 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 will be displayed. Pressing this button will
bypass the interlocking logic for the device permitting non-interlocked control of this
device. When bypassed control will remain active for a single control operation or 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 will also be displayed. When the TAG key is
operated, a small "T" is displayed 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 will be displayed, 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" is displayed next to the device. The user can now
manually change the indication of the device using the SUBST OPENED and SUBST CLOSED
keys.
Figure 375: Breaker 1 tagged
AUTOMATION CONTROL
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