SIPROTEC 4 7UT613/633/635 Differential Protection Relay
SIPROTEC4 7UT6x
-. SIPROTEC 7UT612 차동보호 계전기는 짧은 2개의 터미널로 7개의 Feeder 라인 또는 버스바, 모든 전압 레벨의 2 권선 변압기 또한 모터와 발전기 같은 회전 전기 기계에서 빠르고 선택적인 단락 고 장을 제거하기 위해 사용.
-. 적용의 선택은 parameterization에 의해 가능.
-. 차동기능에 백업 과전류 보호가 부가됨.
_____________________________________________________
Description
The SIPROTEC 7UT6 differential protection relays are used for fast and selective fault clearing of short-circuits in transformers
of all voltage levels and also in rotating electric machines like motors and generators, for short lines and busbars.
The protection relay can be parameterized for use with three-phase and single-phase transformers.
The specific application can be chosen by parameterization. In this way an optimal adaptation of the relay to the protected object
can be achieved. In addition to the differential function, a backup overcurrent protection for 1 winding/
star point is integrated in the relay. Optionally, a low or high-impedance restricted earth-fault protection, a negativesequence
protection and a breaker failure protection can be used. 7UT613 and 7UT633 feature 4 voltage inputs. With this
option an overvoltage and undervoltage protection is available as well as frequency protection, reverse / forward power protection,
fuse failure monitor and overexcitation protection. With external temperature monitoring boxes (thermo-boxes) temperatures can be measured and monitored in the relay. Therefore, complete thermal monitoring of a transformer is possible, e.g. hot-spot calculation of the oil temperature.
7UT613 and 7UT63x only feature full coverage of applications without external relays by the option of multiple protection functions e.g. overcurrent protection is available for each winding or measurement location of a transformer. Other functions are available twice: earth-fault differential protection, breaker failure protection and overload protection. Furthermore, up to 12 user-defined (flexible) protection functions
may be activated by the customer with the choice of measured voltages, currents, power and frequency as input variables.
The relays provide easy-to-use local control and automation functions. The integrated programmable logic (CFC) allows the users to implement their own functions, e.g. for the automation of switchgear (interlocking). User-defined messages can be generated as well.
The flexible communication interfaces are open for modem communication architectures with control system
Function overview
• Differential protection for 2- up to 5-winding transformers (3-/1-phase)
• Differential protection for motors and generators
• Differential protection for short 2 up to 5 terminal lines
• Differential protection for busbars up to 12 feeders (phase-segregated or with summation CT)
Protection functions
• Differential protection with phasesegregated measurement
• Sensitivemeasuring for low-fault currents
• Fast tripping for high-fault currents
• Restraint against inrush of transformer
• Phase /earth overcurrent protection
• Overload protection with or without temperature measurement
• Negative-sequence protection
• Breaker failure protection
• Low/high-impedance restricted earth fault (REF)
• Voltage protection functions (7UT613/633)
Control functions
• Commands for control of circuitbreakers and isolators
• 7UT63x: Graphic display shows position of switching elements, local/remote switching by key-operated switch
• Control via keyboard, binary inputs, DIGSI 4 or SCADA system
• User-defined logic with CFC
Monitoring functions
• Self-supervision of the relay
• Trip circuit supervision
• Oscillographic fault recording
• Permanent differential and restraint current measurement, extensive scope of operational values
Communication interfaces
• PC front port for setting with DIGSI 4
• System interface
IEC 61850 Ethernet
IEC 60870-5-103 protocol,
PROFIBUS-FMS/-DP,
MODBUS or DNP 3.0
• Service interface for DIGSI 4 (modem)/
temperature monitoring (thermo-box)
• Time synchronization via IRIG-B/DCF 77
-. SIPROTEC 7UT612 차동보호 계전기는 짧은 2개의 터미널로 7개의 Feeder 라인 또는 버스바, 모든 전압 레벨의 2 권선 변압기 또한 모터와 발전기 같은 회전 전기 기계에서 빠르고 선택적인 단락 고 장을 제거하기 위해 사용.
-. 적용의 선택은 parameterization에 의해 가능.
-. 차동기능에 백업 과전류 보호가 부가됨.
_____________________________________________________
Description
The SIPROTEC 7UT6 differential protection relays are used for fast and selective fault clearing of short-circuits in transformers
of all voltage levels and also in rotating electric machines like motors and generators, for short lines and busbars.
The protection relay can be parameterized for use with three-phase and single-phase transformers.
The specific application can be chosen by parameterization. In this way an optimal adaptation of the relay to the protected object
can be achieved. In addition to the differential function, a backup overcurrent protection for 1 winding/
star point is integrated in the relay. Optionally, a low or high-impedance restricted earth-fault protection, a negativesequence
protection and a breaker failure protection can be used. 7UT613 and 7UT633 feature 4 voltage inputs. With this
option an overvoltage and undervoltage protection is available as well as frequency protection, reverse / forward power protection,
fuse failure monitor and overexcitation protection. With external temperature monitoring boxes (thermo-boxes) temperatures can be measured and monitored in the relay. Therefore, complete thermal monitoring of a transformer is possible, e.g. hot-spot calculation of the oil temperature.
7UT613 and 7UT63x only feature full coverage of applications without external relays by the option of multiple protection functions e.g. overcurrent protection is available for each winding or measurement location of a transformer. Other functions are available twice: earth-fault differential protection, breaker failure protection and overload protection. Furthermore, up to 12 user-defined (flexible) protection functions
may be activated by the customer with the choice of measured voltages, currents, power and frequency as input variables.
The relays provide easy-to-use local control and automation functions. The integrated programmable logic (CFC) allows the users to implement their own functions, e.g. for the automation of switchgear (interlocking). User-defined messages can be generated as well.
The flexible communication interfaces are open for modem communication architectures with control system
Function overview
• Differential protection for 2- up to 5-winding transformers (3-/1-phase)
• Differential protection for motors and generators
• Differential protection for short 2 up to 5 terminal lines
• Differential protection for busbars up to 12 feeders (phase-segregated or with summation CT)
Protection functions
• Differential protection with phasesegregated measurement
• Sensitivemeasuring for low-fault currents
• Fast tripping for high-fault currents
• Restraint against inrush of transformer
• Phase /earth overcurrent protection
• Overload protection with or without temperature measurement
• Negative-sequence protection
• Breaker failure protection
• Low/high-impedance restricted earth fault (REF)
• Voltage protection functions (7UT613/633)
Control functions
• Commands for control of circuitbreakers and isolators
• 7UT63x: Graphic display shows position of switching elements, local/remote switching by key-operated switch
• Control via keyboard, binary inputs, DIGSI 4 or SCADA system
• User-defined logic with CFC
Monitoring functions
• Self-supervision of the relay
• Trip circuit supervision
• Oscillographic fault recording
• Permanent differential and restraint current measurement, extensive scope of operational values
Communication interfaces
• PC front port for setting with DIGSI 4
• System interface
IEC 61850 Ethernet
IEC 60870-5-103 protocol,
PROFIBUS-FMS/-DP,
MODBUS or DNP 3.0
• Service interface for DIGSI 4 (modem)/
temperature monitoring (thermo-box)
• Time synchronization via IRIG-B/DCF 77
