... graphic and by wareform. According to crest factor, K factor, THFF etc., the user can analyze the ... , VL3,VL12, VL23, VL31,AL1, AL2, AL3, ∑AL, F, ∑P, P1,P2,P3, ∑Q, Q1,Q2,Q3,∑S, ... coupler pulse output- /C: Communication RS485 (Modbus-RTU)- /K: Logic input (DI) 4 drying contact inputs, with + ... indicates a linear load (no harmonics). The higher the K-factor, the greater the harmonic heating effects. - UNBAL ...