TERMINAL 6K5125 - Caterpillar

Original Power Factor Operation
If parameter :31 is set to zero, and the external switch on terminal 41 is closed, then the regulator will operate in "power factor control mode". The regulator assumes the generator is connected to an infinite bus, therefore, the voltage cannot be changed. In power factor mode the generator will supply a varying amount of reactive power (KVARs) based upon the real power output (kW) of the generator to obtain the desired power factor set in parameter :32 (or a remote rheostat).PROM ID 1.03 Power Factor Operation
If parameter :31 is set to zero, and the external switch on terminal 41 is closed, then the regulator will start-up in the KVAR mode supplying 0 KVAR. When the real current measurement is equal to or above 10% of the rated generator output current, the regulator will switch operation to the power factor control mode. The rated generator output current is parameter :04. Thus, the generator set needs to provide a significant amount of real kW power before the digital voltage regulator will regulate in the power factor mode. The start-up value of 0 KVAR is a fixed value and cannot be adjusted.While the measured real current is below 10%, the input of the remote rheostat will be ignored. Once the real generator output current exceeds 10%, the power factor will then be regulated according to parameter :32 (or a remote rheostat). In power factor mode the generator will supply a varying amount of reactive power (KVARs) based upon the real power output (kW) of the generator to obtain the desired power factor set in parameter :32 (or a remote rheostat). When the real current output of the generator decreases to 5% or less of the rated generator output current, the controller will switch back to regulating only KVARs as described above. The switch back point has hysteresis in order to avoid "ringing".PROM ID 1.05 Power Factor Operation
When parameter :31 is set to zero, and the external switch on terminal 41 is closed, the regulator will start-up in the KVAR mode and will regulate according to the KVAR reference level which is set in parameter :33. When the real current measurement is equal to or above the percentage which is set in parameter :38, the regulator will switch operation to the power factor control mode. Thus, the generator set needs to provide a significant amount of real kW power before the digital voltage regulator will regulate in the power factor mode. In the power factor mode the generator will supply a varying amount of reactive power (KVARs) based upon the real power output (kW) of the generator to obtain the desired power factor set in parameter :32 (or a remote rheostat). When the real current output of the generator becomes 5% less than the percentage configured in parameter :38, the controller will switch back to regulating only KVARs as described above. The actual switch back point has hysteresis. For further information, refer to the detailed explanation for parameter