Fail Alarm; 10.5.1 Fail Alarm Triggering - GE Hydran 201 i Instruction Manual

Chapter 10 • Alarms
2. Acknowledge the alarm using the H201Ti's keypad or the Hydran Host software. For
the procedure, see Section 4.2.1 on page 4-3, and the Hydran Host Software Manual.
If the problem has been corrected since a period of time exceeding the corresponding
alarm delay, the alarm message then disappears from the H201Ti's display;
otherwise, it simply stops flashing and remains on the display.
3. Press the Hydran 201Ci-1's corresponding push-button.
10.5

FAIL ALARM

The fail alarm generally indicates to the user that there is a problem with the
Hydran 201i System, not with the transformer. A fail alarm must therefore be verified and
solved rapidly because it indicates that the protection system of the transformer is not
functioning properly.

10.5.1 Fail Alarm Triggering

If the fail alarm relay is set to the Normal or Latch mode, the fail alarm is triggered (the
fail alarm relay is de-energized) when one of the following alarm conditions occurs:
• Supervisory link broken between the Hydran 201Ti and the Hydran 201Ci Controller.
This condition is the only one that affects only the fail alarm relay of the Hydran 201Ci-1.
All other conditions affect the fail alarm relays of both the H201Ti and the H201Ci-1.
• ac power failure or partial failure (power voltage too low for the H201Ti to function
properly).
• Unable to restart the microprocessor.
• H201Ti not initialized (no alarm message appears on the H201Ti's display for this
condition). To cancel this alarm, enter the information requested on the H201Ti's display
(for details, see Section 4.2.5 on page 4-6).
• More than 20 "watchdogs" occurred in 15 minutes (no alarm message appears on the
H201Ti's display for this condition).
• Detection of a hardware malfunction during the autoverification phase of the initial-
ization (no alarm message appears on the H201Ti's display for this condition).
• Setup Lost (for details, see Section 12.1.24 on page 12-13).
• One of the fault triggers conditions, listed in Table 10-1 on page 10-3 (for details, see
Section 10.5.2 on page 10-15).
10-14 Rev. 6, March 2011 Part 17997