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)