... control equipment in measuring and controlling system. They comply EN 61326:2006 and EN 61010-1:2001 ... in different kinds of control system, SCADA system and power management system.2. Technical Feature - Measurement: ... VL3,VL12, VL23, VL31,AL1, AL2, AL3, ∑AL, F, ∑P, P1,P2,P3, ∑Q, Q1,Q2,Q3,∑ ... positive component, negative component and zero component.The Screen displays: +I1, -I2, N. power quality meter ...