Phase Rotation Sequence Selection; Self-Checking Functions - GE SMOR-B GEK 105593C Instructions Manual

Protection, monitoring, analysis, and energy management numerical system

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GEK-105593C

2.2.6. PHASE ROTATION SEQUENCE SELECTION

The SMOR system works correctly with any phase sequence selection ABC or CBA without the need to

change the wiring of the external transformers, since there is a setting which allows the selection of the

phase rotation sequence.

Thanks to its digital technology, the SMOR system incorporates self-checking functions which guarantee the

correct performance of the unit and will block the operation in case of internal errors.

These self monitoring checks are carried out both when the unit is started up and during normal operation.

The checks are carried out on the internal power supply, program memory (ROM), working memory (RAM),

oscillographic memory (RAM) and settings and calibration memory (EEPROM).

In addition there is a hardware test for the LED indicators, which light them all up when the button TARGET

RESET is pressed. If the button is kept pressed down for more than one second the memory for all the

indicators is reset.

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