Self-Checking Functions - GE DTR GEK-106305A Instruction Manual

2. OPERATION PRINCIPLES

2.2.4 SELF-CHECKING FUNCTIONS

Thanks to its digital technology, the DTR 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).
22 DTR Digital Tap Changer Controller GE—106305A