Ied Operation; Normal Operation; Disturbance Identification; Dfr Recording Triggering - Hitachi Relion 670 Series Operation Manual

1MRK500127-UUS Rev. M
Section 6
6.1

Normal operation

In a normal IED use situation, the basic operation includes monitoring and checking procedures.
• Monitoring measured values
• Checking object states
• Checking function setting parameters
• Checking events and alarms
All basic operations can be performed via the LHMI or with PCM600.
6.2

Disturbance identification

Disturbances and their causes can be identified by indicator LEDs: Normal, Pickup and Trip. During
normal operation, the Normal LED is steady green.
For the LEDs to operate, the disturbance recorder has to be defined in the configuration.
Table 13:
LED
Pickup LED
Trip LED
Further actions to be taken to identify the disturbance:
• Checking alarm LEDs
• Reading event history
• Checking fault records
• Analyzing disturbance recordings
6.2.1

DFR recording triggering

DFR recordings are normally triggered by IED applications when they detect fault events. DFR
recordings can also be triggered manually or periodically. The manual trigger generates an instant
disturbance report. Use this function to get a snapshot of the monitored signals.
670 series
Operation manual

IED operation

For more information, see the PCM600 documentation.
Disturbance indications
Document the disturbance before clearing the information from the IED.
Only authorized and skilled personnel should analyze possible errors and decide on further
actions. Otherwise, stored disturbance data can be lost.
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State
Yellow, steady
Red, steady
IED operation
GUID-25794CEB-1F3A-452E-92B4-DDAD6F058CAF v6
GUID-A1EB4334-DAF0-439E-8EB4-8ED02C610DAA v8
Description
Protection picked up
Protection tripped
GUID-5569488B-F930-4762-99CE-2863BEFB1947 v8
Section 6
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