Patent ID: 11967858
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A static transfer switch comprising:
an AC-DC converter that converts an AC current supplied from a preset AC power source into a DC current;
first and second semiconductor rectifier elements connected to positive and negative output terminals of the AC-DC converter, respectively;
first and second bypass electric circuits that connect an input terminal and an output terminal of each of the first and second semiconductor rectifier elements to bypass the first and second semiconductor rectifier elements;
first and second breakers that open or close the first and second bypass electric circuits; and
a control unit that controls the first and second semiconductor rectifier elements or the first and second breakers to conduct currents of the positive and negative output terminals of the AC-DC converter through either one of first paths passing through the first and second semiconductor rectifier elements or second paths passing through the first and second bypass electric circuits when a preset conduction signal is received.