If the Manual close mode setting is set to FALSE and the circuitbreaker has been manually closed during an auto-reclose shot, theAR unit goes to an immediate lockout.If the Manual close mode setting is set to TRUE and the circuitbreaker has been manually closed during an auto-reclose shot (theINPRO is active), the shot is considered as completed.When SOTF starts, reclaim time is restarted, provided that it isrunning.The frequent-operation counter is intended for blocking the auto-reclose function incases where the fault causes repetitive auto-reclose sequences during a short periodof time. For instance, if a tree causes a short circuit and, as a result, there are auto-reclose shots within a few minutes interval during a stormy night. These types offaults can easily damage the circuit breaker if the AR function is not locked by afrequent-operation counter.The frequent-operation counter has three settings:• Frq Op counter limit• Frq Op counter time• Frq Op recovery timeThe Frq Op counter limit setting defines the number of reclose attempts that areallowed during the time defined with the Frq Op counter time setting. If the setvalue is reached within a pre-defined period defined with the Frq Op counter timesetting, the AR function goes to lockout when a new shot begins, provided that thecounter is still above the set limit. The lockout is released after the recovery timehas elapsed. The recovery time can be defined with the Frq Op recovery time setting .If the circuit breaker is manually closed during the recovery time, the reclaim timeis activated after the recovery timer has elapsed.9.4.5 CountersThe AR function contains six counters. Their values are stored in a semi-retainmemory. The counters are increased at the rising edge of the reclose command.The counters count the following situations:• COUNTER: counts every reclose command activation• CNT_SHOT1: counts reclose commands that are executed from shot 1• CNT_SHOT2: counts reclose commands that are executed from shot 2Section 9 1YHT530004D05 DControl functions708 615 seriesTechnical Manual
