MFC911 Series Microcomputer Integrated Protection Measurement and Control Device

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MFC911 Series Basic Integrated Protection Australian I Control Device

Device Model	Protection function	measurement and control function	Use
MFC911C-I Microcomputer current type protection device	1. Three-stage overcurrent protection2Overload protection 3. Non-power protection 4. Zero-sequence overcurrent protection	Three-phase protection current, zero-sequence current,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output, "Threeremote communication	For incoming or feeder
MFC911C-U Microcomputer voltage type protection device	1. Zero-sequence overvoltage protection 2. Undervoltage protection 3. Overvoltage protection	Zero sequence voltage, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output, "Threeremote communication	For10kVClass voltage transformer cabinet
MFC911C-Lmicrocomputer line protection device	1. Two-stage overcurrent protection 2. current inverse time protection 3. Reclosing and Post Acceleration 4. Low voltage load shedding 5. Zero-sequence overcurrent protection 6. Zero-sequence overvoltage protection	Three-phase protection current, zero sequence current (calculation),A,CPhase measured current, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output	For general incoming or feeder
MFC911C-T Microcomputer with transformer protection device	1. Two-stage overcurrent protection 2. current inverse time protection 3. Overload protection 4. Non-power protection 5. Zero-sequence overcurrent protection 6. Zero-sequence overvoltage protection	Three-phase protection current, zero sequence current (calculation),A,CPhase measured current, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output	Applicable10kVGrade medium and small capacity with transformer
MFC911C-P microcomputer busPTmeasurement and control device	1. Grounding protection 2. PTSwitching protection	Three-phase bus voltage,8Road entry detection,2 Road alarm output, cumulative record of events and protection events, operating state alarm output	ForPTSwitch andPTmeasurement and control
Optional Description:C—Modbus-RS485Communication F--Anti-jump and operation circuit (AC type device only includes operation circuit, excluding anti-jump) E—External zero sequence current (protection device without external measurement current)
Selection case:MFC911C-LCF,Line protection,RS485Communication, including anti-jump and operation loop MFC911C-LECF,Line protection,RS485Communication, including anti-jump and operation circuit, with external zero-sequence current, cancel measuring currentMFC911C-T,With transformer protection device,RS485Communication, without anti-jump and operation loop
Special Note: Only one of circuit breaker and microcomputer protection device can have anti-jumping function. If both have anti-jumping function, it will affect the normal opening and closing of circuit breaker.MFC911C-I, MFC911C-UFor economic products, only optional communication, no other optional functions.

MFC911 Series Standard Integrated Protection Measurement and Control Device

Device Model	Protection function	measurement and control function	Use
MFC911-Lmicrocomputer line protection device	1. Two-stage overcurrent protection 2. current inverse time protection 3. Reclosing and Post Acceleration 4. Low voltage load shedding 5. Zero-sequence overcurrent protection 6. Zero-sequence overvoltage protection	Three-phase protection current, zero sequence current (calculation),A,CPhase measured current, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output	For general incoming or feeder
MFC911-T Microcomputer with transformer protection device	1. Two-stage overcurrent protection 2. current inverse time protection 3. Overload protection 4. Non-power protection 5. Zero-sequence overcurrent protection 6. Zero-sequence overvoltage protection	Three-phase protection current, zero sequence current (calculation),A,CPhase measured current, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output	Applicable10kVGrade medium and small capacity with transformer
MFC911-P microcomputer busPTmeasurement and control device	1. Grounding protection 2. PTSwitching protection	Three-phase bus voltage,8Road entry detection,2 Road alarm output, cumulative record of events and protection events, operating state alarm output	ForPTSwitch andPTmeasurement and control
MFC911-B Microcomputer standby power supply self-switching device	1. Incoming line/bus joint standby 2. Single-phase two-stage overcurrent protection (incoming cabinet)	Single-phase protection current, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events.	For standby power self-switching
MFC911-M1 Microcomputer motor integrated protection device	1. Two-stage overcurrent protection 2. Low voltage load shedding 3. Overload protection 4. Negative sequence overcurrent protection 5. Overheat protection 5. Zero-sequence overcurrent protection 6. Zero-sequence overvoltage protection	Three-phase protection current, zero sequence current (calculation),A,CPhase measured current, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output	For small and medium capacity motors
MFC911-M2 Microcomputer motor differential protection device	1. Differential quick break 2. ratio differential 3. CTBreak lock	Three-phase protection current, opposite side differential current,8 Road entry detection,2Road alarm output, control circuit disconnection alarm	withMFC911-M1Use together to complete the protection of large-capacity motors
MFC911-C microcomputer capacitor protection device	1. Two-stage overcurrent protection 2. current inverse time protection 3. Low voltage load shedding protection 4. automatic casting and cutting 5. Overvoltage protection 6. Zero-sequence overcurrent protection 7. Zero-sequence overvoltage protection	Three-phase protection current, zero sequence current (calculation),A,CPhase measured current, three-phase bus voltage,8Road entry detection,2Road alarm output, cumulative record of events and protection events, operating state alarm output	Used for parallel small and medium capacity capacitors
Optional Description:C—Modbus-RS485Communication F1Anti-jump and operation circuit (AC type device only includes operation circuit, excluding anti-jump)E—External zero sequence current (protection device without external measurement current)
Selection case:MFC911-LCF,Line protection,RS485Communication, including anti-jump and operation loop MFC911-LECF,Line protection,RS485Communication, including anti-jump and operation circuit, with external zero-sequence current, cancel measuring currentMFC911-T,With transformer protection device,RS485Communication, without anti-jump and operation loop
Special Note: Only one of circuit breaker and microcomputer protection device can have anti-jumping function. If both have anti-jumping function, it will affect the normal opening and closing of circuit breaker.

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MFC911 Series Microcomputer Integrated Protection Measurement and Control Device

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