ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
H02H0003160000 responsive to fault current to earth, frame or mass (with balanced or differential arrangement H02H0003260000) 1
H02H0003170000 by means of an auxiliary voltage injected into the installation to be protected 1
H02H0003180000 responsive to reversal of direct current 1
H02H0003200000 responsive to excess voltage 1
H02H0003220000 of short duration, e.g. lightning 1
H02H0003240000 responsive to undervoltage or no-voltage 1
H02H0003247000 having timing means 1
H02H0003253000 for multiphase applications, e.g. phase interruption 1
H02H0003260000 responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents 1
H02H0003280000 involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus 1
H02H0003300000 using pilot wires or other signalling channel 1
H02H0003320000 involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors 1
H02H0003330000 using summation current transformers (H02H0003347000 takes precedence);; 1
H02H0003340000 of a three-phase system 1
H02H0003347000 using summation current transformers 1