点击图片查看原图
西门子微机综合保护装置：发电机保护、变压器差动保护、线路差动保护、过流保护、母线/断路器失灵保护、间隔测控单元保护，如：7SJ、7UT、7SD、7PA、7UM、7RW、7SK、7XV、7XT、6MD、7VV等系列
SIPROTEC 4
7UT6 用于变压器、发电机、电动机和母线的差动保护继电器
7UT612: 用于2个测量端的保护设备 (1/3 x 19’’ housing 7XP20)
7UT613: 用于3个测量端的保护设备 (1/2 x 19’’ housing 7XP20)
7UT633: 用于3个测量端的保护设备 (1/1 x 19’’ housing 7XP20)
7UT635: 用于5个测量端的保护设备 (1/1 x 19’’ housing 7XP20)
7UT613: 用于3个测量端的保护设备 (1/2 x 19’’ housing 7XP20)
7UT633: 用于3个测量端的保护设备 (1/1 x 19’’ housing 7XP20)
7UT635: 用于5个测量端的保护设备 (1/1 x 19’’ housing 7XP20)
Function ANSI No.
Differential 87T/G/M/L
Restricted Earth fault 87 N
Overcurrent-time, phases 50/51
Overcurrent-time, 3I0 50N/51N
Overcurrent-time, earth 50G/51G
Overcurrent-time, single phase
Negative sequence 46
Overload IEC 60255-8 49
Overload IEC 60354 (hot spot) 49
Overexcitation V/Hz 24
Breaker failure 50BF
External temperature monitoring 38
Lockout 86
Measured value supervision
Trip circuit supervision 74TC
Direct coupling
Operational measured values
Restricted Earth fault 87 N
Overcurrent-time, phases 50/51
Overcurrent-time, 3I0 50N/51N
Overcurrent-time, earth 50G/51G
Overcurrent-time, single phase
Negative sequence 46
Overload IEC 60255-8 49
Overload IEC 60354 (hot spot) 49
Overexcitation V/Hz 24
Breaker failure 50BF
External temperature monitoring 38
Lockout 86
Measured value supervision
Trip circuit supervision 74TC
Direct coupling
Operational measured values
Protection Objects
Three-phase transformer
Single-phase transformer
Auto-transformer
Generator / Motor
Busbar, 3-phase (Branch point)
Busbar, 1-phase
Single-phase transformer
Auto-transformer
Generator / Motor
Busbar, 3-phase (Branch point)
Busbar, 1-phase
