Applications

• Three phase high impedance bus differential protection for switch

gear .

• Three phase differential protection of transformers, generators,

motors, etc .

• Restricted earth fault protection for grounded-wye windings or

balanced earth fault protection

Protection functions

• Differential protection (87)

• Open CT circuit (87SV)

Metered values

• Differential voltage readings

• Differential voltage phase angles

Fault and waveform monitoring

• Trip circuit monitoring1

• Fault data logs (up to 20 events)

• Sequence of event recorders (up to 300 events)

• Waveform capture (7.200 cycles total, customized file size)