INTRODUCTION

Introduction:

Multifunctional digital relay for transformer

protection:

• Configurable multi-protection transformer package

• Up to 4 sets of CTs and/or VTs (T60) – Optional 5/6 windings

• Up to 6 sets of CTs and/or VTs (T35)

• Programmable FlexLogic

• GOOSE and Direct I/O messaging

• Easy access through HMI(Human Machine Interface)

• Easy for monitoring and control PC program

• Varieties of communications

• Metering and Monitoring:

– Currents(phasors and true RMS)

– phase, ground, neutral, symmetrical components and demand

– Voltages(phasors and true RMS)

– phase, ground, neutral and symmetrical components

– Power

– active, reactive, apparent, power factor

– Energy and energy demand

– Per-phase differential and restraint currents

– Ground differential and restraint currents

– Per-phase 2-nd and 5-th harmonics on differential currents

– 2-nd to 25-th harmonics currents and THD

– Oscillography

– Event Recorder

– Data Logger

– One PMU Element