High Impedance Differential


High Impedance Differential

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High Impedance Differential

1M123 High Impedance BUS Protection Rack

  • Compact single tier BUS bar protection system
  • Proven electro mechanical high impedance differential scheme
  • Integrated 3 Phase Metrosils
  • Integrated multi trip relay
  • Optional trip supply supervision
  • Pre assembled & wired in 4U high 19” sub rack
  • High speed operation
  • High sensitivity
  • Wide range of settings
  • High stability
  • Made in Australia
High Impedance Differential

1M124 High Impedance BUS Protection Rack

  • Compact single tier BUS bar protection system
  • Incorporates Reyrolle DAD-N numeric high impedance differential relay
  • Built in CT supervision
  • Trip rated programmable output contacts
  • Integrated supply supervision
  • Integrated fault & disturbance waveform recording
  • SCADA communications
  • High speed operation
  • Wide range of settings
  • High stability
  • Integrated 3 Phase Metrosils & stabilizing resistors
  • Adjustable stabilizing resistors
  • Integrated multi trip relay
  • Optional trip supply supervision
  • Pre assembled & wired in 4U high 19” sub rack
  • Made in Australia
High Impedance Differential

2C73 High Impedance Differential Relay

  • High speed operation
  • High sensitivity
  • Wide range of settings
  • High stability
  • Compact & cost effective design
  • Use three units for three phase operation
  • 50Hz & 60Hz versions
  • Insensitive to DC
  • Hand reset flag
  • Rugged attracted armature sensing element
  • Size 2M28 draw out case
  • Made in Australia
High Impedance Differential

2V68-S BUS Bar CT Supervision & Shorting

  • Low AC burden
  • No external resistors required
  • 3 latching N/O (Hand reset), alarm contacts
  • 3 latching N/O (Hand reset), heavy duty buswire shorting contacts
  • Optional harmonic filter – 50Hz or 60Hz
  • Optional adjustable time delay
  • Hand reset flag
  • 62-250V DC auxiliary supply
  • 44-230V AC auxiliary supply
  • Optional 40-58V DC supply
  • Auxiliary supply fail alarm
High Impedance Differential

2V73 High Impedance Differential Relay

  • High speed operation
  • High sensitivity
  • Wide range of settings
  • High stability
  • Compact & cost effective design
  • Use three units for three phase operation
  • 50Hz & 60Hz versions
  • Insensitive to DC
  • Hand reset flag
  • Rugged attracted armature sensing element
  • Size 2M28 draw out case
  • Made in Australia
High Impedance Differential

2V75 Metrosil / Resistor Module

  • Compact & rugged construction
  • Fully insulated module
  • High energy rating
  • Pre-wired with heavy duty stud terminals
  • Optional high power stabilizing resistors with convective cooling ports
  • Access for stabalizing resistor adjustment
  • 3 or 6 inch Metrosils
  • Suitable for high impedance differential BUS protection schemes
  • Insensitive to DC
  • Made in Australia
High Impedance Differential

6RA20 CT Shorting Relay

  • Modular packaging
  • Rack or flush mounting
  • Draw out module
  • M4 screw terminals
  • Operating coils are available for 24, 30, 48, 110, 125, 220 & 250 Volts DC
  • Contacts are of fine solid silver designed & manufactured to ensure low resistance & high reliability
  • High isolation across open contacts
  • High make and carry rating
  • Custom labeling available
  • High visibility electro mechanical flag indication
  • Rugged modular construction