K-WANG
- Telephone:+86-15305925923
- contacts:Mr.Wang
- Email:wang@kongjiangauto.com
ABB 1MRK 504 053-BEN Transformer protection
ABB 1MRK 504 053-BEN Transformer protection
Features
• A protection, control, and monitoring IED with extensive functional library and configuration possibilities and expandable hardware design to meet specific user requirements
• For power transformers, autotransformers, shunt reactors, T-protection, generator transformer blocks, phase shifting transformers and small busbar systems
• For two- and three-winding transformers with up to six stabilized inputs • For multi- or single-breaker arrangements
• Transformer differential protection with:
- Percentage bias restraint for through faults
- Waveform and Second harmonic restraint for transformer inrush
- Fifth harmonic restraint for overexcitation
- High sensitivity for interturn faults
• Restricted earth fault protection for all direct or low impedance earthed windings
- Extremely fast operation
- High sensitivity
- High and low impedance based
• Full scheme phase-to-phase and phase-to-earth distance protection with up to five zones:
- Load encroachment feature
• Instantaneous high speed short circuit function with low transient overreach
• Directional overcurrent protection with four steps for each winding
- Each step can be inverse or definite time delayed
- Each step can be directional or non-directional
• Instantaneous high speed earth fault function with low transient overreach
• Directional earth fault protection with four stages for each winding
- Each step can be inverse or definite time delayed
- Each step can be directional or non-directional
- Each step can be blocked on second harmonic component
• Synchrocheck function for single- or multi-breaker arrangements:
- Selectable energizing direction
- Two functions with built-in voltage selection
• Selectable additional software functions such as breaker failure protection for each breaker, voltage protection, overexcitation protection, control and monitoring
• Tripping from Buchholtz, temperature devices etc. through binary inputs stabilized against capacitive discharges
• Built-in data communication modules for station bus IEC 61850-8-1
• Data communication modules for station bus IEC 60870-5-103, LON and SPA
• Integrated disturbance and event recorder for up to 40 analog and 96 binary signals
• Time synchronization over IEC 61850-8-1, LON, SPA, binary input or with optional GPS module
• Analog measurements accuracy up to below 0.5% for power and 0.25% for current and voltage and with site calibration to optimize total accuracy
• Versatile local human-machine interface
• Extensive self-supervision with internal event recorder
• Six independent groups of complete setting parameters with password protection
• Powerful software PC tool for setting, disturbance evaluation and configuration
• Remote end data communication modules for C37.94 and G.703
Functions
• Differential protection
- Transformer differential protection, two winding (PDIF, 87T)
- Transformer differential protection, three winding (PDIF, 87T)
- Restricted earth fault protection (PDIF, 87N)
- High impedance differential protection (PDIF, 87X)
• Distance protection
- Distance protection zones (PDIS, 21)
- Phase selection with load encroachment (PDIS, 21)
- Power swing detection (RPSB, 78)
- Automatic switch onto fault logic (PSOF)
• Current protection
- Instantaneous phase overcurrent protection (PIOC, 50)
- Four step phase overcurrent protection (POCM, 51/67)
- Instantaneous residual overcurrent protection (PIOC, 50N)
- Four step residual overcurrent protection (PEFM, 51N/67N)
- Thermal overload protection, two time constants (PTTR, 49)
- Breaker failure protection (RBRF, 50BF)
- Pole discordance protection (RPLD, 52PD)
• Voltage protection
- Two step undervoltage protection (PUVM, 27)
- Two step overvoltage protection (POVM, 59)
- Two step residual overvoltage protection (POVM, 59N)
- Overexcitation protection (PVPH, 24)
• Frequency protection
- Underfrequency protection (PTUF, 81)
- Overfrequency protection (PTOF, 81)
- Rate-of-change frequency protection (PFRC, 81)
• Multipurpose protection
- General current and voltage protection (GAPC)
• Secondary system supervision
- Current circuit supervision (RDIF)
- Fuse failure supervision (RFUF)
• Control - Synchrocheck and energizing check (RSYN, 25)
- Apparatus control for single bay, max 8 app. (1CB) incl. Interlocking (APC8)
- Apparatus control for single bay, max 15 app. (2CBs) incl. Interlocking (APC15) -
Apparatus control for up to 6 bays, max 30 app. (6CBs) incl. Interlocking (APC30)
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