Surge withstand performance of MCB used as backup overcurrent protection of SPD

Author

Zhou, Qibin ; Zhao, Yang ; Sun, Wei

Author_Institution

Lightning Protective Device Testing Center, Shanghai Lightning Protection Center, Shanghai, China

fYear

2012

fDate

2-7 Sept. 2012

Firstpage

1

Lastpage

4

Abstract

This paper presented an experimental study on the surge withstand performance of MCBs (Miniature Circuit Breaker) which are tendentiously used as backup overcurrent protection of SPDs. The maximum and 15-shots withstand capability of MCBs for 10/350μs and 8/20μs surges were found through test and compared with those of fuses. Meanwhile the surge withstand capability of the MCBs with various a.c. switching capability and characteristic curves were compared. Then the damaged and triggering mechanism of MCB under surges was investigated. The residual voltage of MCB under 8/20μs surges and the surge withstand capability of MCCB (Moulded Case Circuit Breaker) under 10/350μs surges were discussed finally.

Keywords

circuit breakers; overcurrent protection; surge protection; MCB damaged mechanism; MCB residual voltage; MCB triggering mechanism; MCCB surge withstand capability; SPD backup overcurrent protection; miniature circuit breaker; moulded case circuit breaker surge withstand capability; Fuses; Generators; Sun; Surge protection; Surges; Switches; MCB; SPD; coordination; surge withstand capability;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2012 International Conference on

Conference_Location

Vienna

Print_ISBN

978-1-4673-1898-3

Electronic_ISBN

978-1-4673-1896-9

Type

conf

DOI

10.1109/ICLP.2012.6344302

Filename

6344302