Name Values (Range) Unit Step Default DescriptiontPRCrv4 0.005 - 3.000 - 0.001 0.500 Param PR for customized inverse resettime curve for step 4tTRCrv4 0.005 - 100.000 - 0.001 13.500 Param TR for customized inverse resettime curve for step 4tCRCrv4 0.1 - 10.0 - 0.1 1.0 Param CR for customized inverse resettime curve for step 4Table 97:NS4PTOC Non group settings (basic)Name Values (Range) Unit Step Default DescriptionGlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global BaseValue groups7.5.6 Monitored dataPID-4151-MONITOREDDATA v4Table 98:NS4PTOC Monitored dataName Type Values (Range) Unit DescriptionIOp REAL - A Operating current levelUPol REAL - kV Polarizing voltage levelUPOLIANG REAL - deg Polarizing anglebetween voltage andcurrent7.5.7 Operation principle GUID-8923EC0B-A5BA-431B-9699-EB67E2637560 v3Four step negative sequence overcurrent protection NS4PTOC function has thefollowing three “Analog Inputs” on its function block in the configuration tool:1. I3P, input used for “Operating Quantity”.2. U3P, input used for “Polarizing Quantity”.3. I3PDIR, input used for "Directional finding"These inputs are connected from the corresponding pre-processing function blocksin the Configuration Tool within PCM600.7.5.7.1 Operating quantity within the function GUID-8F0A5BDE-AC98-4188-9085-42A8DF00C476 v3Four step negative sequence overcurrent protection NS4PTOC function alwaysuses negative sequence current (I2) for its operating quantity. The negativesequence current is calculated from three-phase current input within the IED. Thepre-processing block calculates I2 from the first three inputs into the pre-processing block by using the following formula:1MRK 506 382-UEN A Section 7Current protectionLine distance protection REL650 2.2 IEC 211Technical manual
