2
2
NC20 - Manual - 01 - 2015
T A B L E O F C O N T E N T S
T A B L E O F C O N T E N T S
Scope and liability ...........................................................................................................................................................................................5
Applicability ......................................................................................................................................................................................................5
Conformity ........................................................................................................................................................................................................5
Copyright ...........................................................................................................................................................................................................5
Warranty ...........................................................................................................................................................................................................5
Safety recommendations ...............................................................................................................................................................................5
Insulation tests ................................................................................................................................................................................................5
Product identification .....................................................................................................................................................................................6
Environment .....................................................................................................................................................................................................6
Graphical conventions ...................................................................................................................................................................................6
Glossary/definitions ........................................................................................................................................................................................6
Preface ........................................................................................................................................................................................................... 10
Photo .............................................................................................................................................................................................................. 10
Main features .................................................................................................................................................................................................11
Product standard for measuring relays .....................................................................................................................................................12
Mechanical data ...........................................................................................................................................................................................12
Insulation ........................................................................................................................................................................................................12
Voltage dip and interruption ........................................................................................................................................................................12
EMC tests for interference immunity .........................................................................................................................................................12
Emission ......................................................................................................................................................................................................... 13
Mechanical tests .......................................................................................................................................................................................... 13
Climatic tests ................................................................................................................................................................................................. 13
Safety ............................................................................................................................................................................................................. 13
Certifications ................................................................................................................................................................................................. 13
Undervoltage - 27 ..........................................................................................................................................................................................16
Undercurrent - 37 ..........................................................................................................................................................................................17
Phase unbalance - 46 ...................................................................................................................................................................................17
Neutral unbalance current - 46N ................................................................................................................................................................17
RMS Phase overcurrent - 50/51 ................................................................................................................................................................. 19
Phase overcurrent - 50/51 Fundamental .................................................................................................................................................. 20
Residual overcurrent - 50N/51N ................................................................................................................................................................ 20
Overvoltage - 59 .............................................................................................................................................................................................22
Breaker failure - BF .......................................................................................................................................................................................22