GE G30 Instruction Manual page 450
Ur series generator protection system
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Also See for G30:
- Instruction manual (696 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (652 pages)
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7.1 COMMANDS
MAINTENANCE ALERT:
**Bad PTP Signal**
•
Latched target message: No.
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Description of problem: No PTP enabled port has good PTP signal input.
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How often the test is performed: Activated when no acceptable signal is being received.
•
What to do: Ensure the following:
–
The Ethernet cable(s) are properly connected.
–
At least one PTP grandmaster-capable clock is functioning.
–
If strict PP is enabled, that entire network is PP compliant.
–
The network is delivering PTP messages to the relay.
MAINTENANCE ALERT:
SNTP Failure
•
Latched target message: No.
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Description of problem: The SNTP server is not responding.
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How often the test is performed: Every 10 to 60 seconds.
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What to do: Check that Ethernet cable(s) are properly connected. Check that configuration for the SNTP server corre-
sponds to the actual server settings. Check connectivity to the server (ping the server IP address.
MAINTENANCE ALERT:
4L Discrepancy
•
Latched target message: No.
•
Description of problem: A discrepancy has been detected between the actual and desired state of a latching contact
output of an installed type "4L" module.
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How often the test is performed: Upon initiation of a contact output state change.
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What to do: Verify the state of the output contact and contact the factory if the problem persists.
7
MAINTENANCE ALERT:
GGIO Ind xxx oscill
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Latched target message: No.
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Description of problem: A data item in a configurable GOOSE data set is oscillating.
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How often the test is performed: Upon scanning of each configurable GOOSE data set.
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What to do: The "xxx" text denotes the data item that has been detected as oscillating. Evaluate all logic pertaining to
this item.
DIRECT I/O FAILURE:
COMM Path Incomplete
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Latched target message: No.
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Description of problem: A direct device is configured but not connected.
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How often the test is performed: Every second.
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What to do: Check direct input and output configuration and wiring.
7-8
G30 Generator Protection System
7 COMMANDS AND TARGETS
GE Multilin
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