Entity ValueLow zero sequence source impedance at B j5 ΩCT ratio at A and B 1 000/1 AVT ratio at A and B/14330113. kVMaximum power transfer on the line 180 MVAOnly settings that need adjustment due to the specific application aredescribed in setting examples. It is recommended to keep the defaultvalues for all settings that are not described. Refer to Technical manual forsetting tables for each protection and control function.Refer to setting guideline section in Application manual for guidelines onhow to set functions that are not presented in setting examples.Use parameter setting tool in PCM600 to set the IED according tocalculations for the particular application.3.1.1 Calculating general settings for analogue TRM inputs 4I 1I 5UThe transformer module (TRM) has the capability of 4 current inputs (tapped to 1 or 5 A),one current input (tapped 0.1 or 0.5 A) and 5 voltage inputs.The line phase current CTs (three phase current transformer group) are connected to inputs1 – 3 (A,B,C).The residual current CT of a parallel line can be connected to input 4 (IN, COMP).The residual current CT of the protected line can be connected to input 5 (IN). This inputhas lower rated current enabling sensitive ground fault detection.The line voltage transformer VTs are connected to inputs 6 – 8 (A,B,C).The busbar voltage transformers (busbar 1 and 2) can be connected to inputs 9 – 10 (onephase input phase-to-ground or phase-to-phase)Set the current transformers inputs as follows:Section 3 1MRK 506 334-UUS AREL650 setting examples42Application manual
