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Monday, November 2, 2015


Below is the procedure in the access of fault indications of the ABB SPAA 331C Overcurrent Relay. Most substation engineers are limited in the access of relay indications and readings especially during faults or retrieval of data since there is a separate group that handles relay testing and setting.  I am not familiar with the latest relay tester already that is why I could not include relay setting and testing.

Note: No recorded fault current values
   Recorded information that can be retrieved:
    1-Maximum phase current value, 2-number of start I>;, 3-number of start I>>;, 4-duration of start
     I>;, 5-duration of start I>>;

1. On SPJC 3C3 and 1C8 module, press  “ STEP ” button for 1sec to scroll the real-time measured values (rightmost 3-digits on the display), indicated by a lit indicator (e.g. IL1, IL2, IL3, …).

2. Press  “STEP”  button for 0.5sec to go back each display sequence

3. To go to main display, just press the “STEP” button continually until  the display has no indication (black screen).

4. For SPCT 2C17 autorecloser, it has been disabled since all of the switches (SG1-SG8) are set to 0.

SPJC 3C3 (IL1, IL2, IL3)

SPJC 1C8 (Io component)

SPCT 2C17 (Autorecloser) -DISABLED

Reference: ABB SPAA 331C manual


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