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Busbar Protection

The most advance busbar protection solutions

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Busbar is the point where both the transmission lines and distribution lines converge. So the protection of the busbar not only ensures the safety of grid stations but also the safe operation of transmission and distribution lines. Though busbar protection is the most critical relaying application, EPESOL provides a highly reliable, scalable & dependable algorithm for the protection of busbar. These relays consist of both high and low impedance, centralized and decentralized differential protection. With the capacity of protecting up to 24 feeders, EPESOL's microprocessor-based relays also provide three-pole breaker failure protection along with a monitoring and event recording facility with a fast and secure sub-cycle tripping time.

B90

  • Protection and breaker failure for re-configurable MV, HV, EHV multi-section busbars with up to 24 feeders.
  • Performs fast and secure low-impedance bus protection
  • Sub-cycle tripping time of 0.75 cycles
  • 06 differential zones per phase.
  • Trip times of 0.75 power cycle with CT saturation detector that operates with only 2 msec of saturation-free current

P746/747

  • Tripping time is independent of substation topology and number of feeders
  • User-friendly software tools for scheme monitoring
  • Built-in CT saturation proof breaker failure protection
  • Harsh environment protection extends the life of the product
  • Advanced binary inputs comply with the harshest norms for surge withstand, plus the ESI 48-4 EB2 standard

P741/2/3

  • Tripping time is constant, less than 1 cycle and independent of the fault current, the substation topology and the number of feeders
  • Suitable for application on solidly grounded, impedance grounded, Petersen coil grounded and isolated systems
  • Free of charge software tools for easy scheme configuration and monitoring
  • Connection between central and peripheral units is by redundant fiber, eliminating EMC, touch and step potential issues
  • Advanced binary inputs comply with the harshest norms for surge withstand, plus the ESI 48-4 EB2 standard

B30

  • Cost-effective, feature-focused busbar protection
  • Protect busbars with up to 6 feeders 2-zones to 16 feeders 6-zones
  • Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation
  • High speed differential protection algorithm for sub-cycle trip times of 0.75 power cycle with CT saturation detection with only 2ms of saturation-free current

MCAG

  • High speed differential protection
  • High thermal withstands
  • High stability during through faults Operation is fast and reliable (25ms at 5 x setting)
  • Easy integration into 4U height MIDOS rack schemes
  • Highly-tuned to the fundamental to prevent spurious operation

MFAC

  • High speed differential protection
  • Fast and reliable due to simple electromechanical construction
  • Wide range of setting
  • MFAC 14 for earth fault protection
  • MFAC 34 for earth and phase fault protection

HID

  • In conjunction with a high-speed overcurrent relay to provide three phase high impedance differential protection
  • It can also be used to protect electrical machines like transformers, generators or motors against restricted ground faults.
  • Single-zone bus protection, reactor protection, or sensitive restricted earth fault protection on grounded, wye-connected power transformer windings
  • Provides metal oxide varistors (MOV) to clamp secondary peak voltage to less than 2 kV

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Retrofit

Solution

EPESOL provides complete retrofit solution form study to design and implementation uniquely transforming the old parameters to new one, while maintaining the whole system.
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Auxiliary

Equipment

The best in class, complete range of trip, lockout, and supervision relays and test blocks to meet each application requirement. .
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EHV

Panels

EPESOL is the market leader in Panels design and manufacturing with its offering in protection and control, AC/DC auxiliary, Automation, Metering and Event/Fault recorder panel.
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Smart

Busbar

EPESOL provides high impedance as well as low impedance, centralized and decentralized busbar protection with the possibility of protecting 6 bays at a time.
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