| 摘要 |
#CMT# #/CMT# The device has input voltage divisors (R5 to R10) that are connected with an associated voltage measuring device (1,2,3) by a given connecting impendence (R1,R2,R3). Protection impedance (R4) and the connecting impedance are dimensioned. A virtual zero point is formed as point of reference of the voltage measuring device at a neutral conductive input. The impedance of the input voltage divisors and protection impedance is formed from multiple impedances switches provided in rows. #CMT#USE : #/CMT# Device for measuring an electrical alternating voltage. #CMT#ADVANTAGE : #/CMT# The device has input voltage divisors that are connected with an associated voltage measuring device by a given connecting impendence, and hence ensures accurate measurement at small technical cost. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a circuit diagram of a measuring device. 1,2,3 : Voltage measuring device E1,E2,E3 : Inputs R1,R2,R3 : Connecting impendence R4 : Protection impedance R5 to R10 : Input voltage divisors. |
