摘要
详细分析了微机保护中外部开关量输入电源使用不当所引起的问题,如安装调试时将外部接点输入光隔动作值设置偏低,制造时外部接点输入光隔动作值偏低等。提出了采用逆变电源的解决办法以及一些具体要求。
The problem caused by the improper use of power supply for the binary input of external contactors is analyzed in detail,such as the action threshold of external contactor OPT is set lower during commissioning or manufacturing. It is suggested to apply DC/DC converter with some requirements.
出处
《电力自动化设备》
EI
CSCD
北大核心
2004年第12期78-80,共3页
Electric Power Automation Equipment
关键词
微机保护
开关量
逆变电源
隔离
numerical relay
binary input
DC / DC converter
isolation
