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Protection & Control
Bus Protection

B95Plus Bus Protection
  • Comprehensive and scaleable bus and breaker fail protection for LV, HV and EHV busbars.
  • Features integrated protection and breaker failure for re-configurable LV, HV, EHV multi-section busbars up to 24 feeders.
B90 Bus Differential System
  • Cost effective bus protection and metering for up to six feeders.
  • Featuring integrated protection for HV and EHV busbars, providing cost effective, feature focused busbar protection.
B30 Bus Differential System
  • Three-phase high impedance differential protection for substation busbars.
  • A high impedance busbar protection relay, designed to provide busbar differential protection for single or split busbar arrangements.
MIB High Impedance Bus Differential System
  • Auxiliary resistors and varistors for high impedance differential schemes.
  • Provides resistors together with voltage limiters (MOVs) normally used in conjunction with a high-speed overcurrent relay to achieve high impedance differential protection.
HID High Impedance Differential Module
  • Auxiliary resistors and varistors for high impedance differential schemes.
  • Provides resistors together with voltage limiters (MOVs) normally used in conjunction with a high-speed overcurrent relay to achieve high impedance differential protection.
MFAC: High – Speed Differential Protection Relay
  • MFAC 14 when only earth fault protection is required, MFAC 34 provides both phase and earth fault protection.
  • Applications including generators, reactors, busbars, motors and the individual windings of power transformers.
  • Ensuring high stability with through faults, with 'tuned to rated frequency' technique and a wide settings range
  • Fast and reliable due to its simple electromechanical construction
P746 – Busbar Differential Relay
  • Complete protection for MV and HV Busbar configurations with up to 2 zones and 18 feeders
  • Option of conventional VT or IEC 61850-9-2LE compliant sampled value Process Bus
  • 10 integrated function keys, tri-color LEDs, and graphical programmable logic permit the creation of comprehensive schemes.
  • IEC 61850 redundant Ethernet, supporting self-healing ring, RSTP, dual homing or PRP/HSR
  • IEC62439 HSR compliant IEC61850 Ed 1
P747 – Busbar Differential Relay
  • Complete protection for MV and HV Busbar configurations with up to 4 zones and 18 feeders
  • Interoperable with all classes of CT: IEEE, IEC, air-gapped, non-gapped - and CTs with moderate knee point voltage
  • 10 integrated function keys, tri-color LEDs, and graphical programmable logic permit the creation of comprehensive schemes, tailored to your needs
  • IEC 61850 redundant Ethernet, supporting self-healing ring, RSTP, dual homing or PRP/HSR
  • IEC62439 HSR compliant IEC61850 Ed 1