摘要
介绍了"长延时曲线斜率可调"IDMTL保护的特点,以及在实际方案中的应用。低压进线开关采用IDMTL保护在国外应用已经非常成熟和广泛,但在国内应用较少。采用IDMTL保护可以与变压器的中压侧熔断器良好配合,减少用户停电故障范围,缩短停电时间,大大降低故障恢复时间。
The protective characteristic and its application in actual scheme of ＂long delay curve slope adjustable＂ IDMTL were introduced. The application of IDMTL protection in the low voltage incoming switch is very mature and common in overseas, but it is less used in China. The good coordination between IDMTL protection and medium voltage side fuse of transformer could reduce the fault power cut area, fault power cut time and fault restore time.
出处
《低压电器》
北大核心
2008年第2期49-51,共3页
Low Voltage Apparatus
关键词
IDMTL
选择性
框架式断路器
长延时保护
供电可靠性
inverse definite minimum time lag（IDMTL）
discrimination
air circuit breaker
long delay protection
reliability of power supply
