The Ohmega relays are a range of numeric impedance measuring distance protection relays.
Functionality includes
- 4 Zone Phase Fault Mho
- Distance Protection
- 4 Zone Earth Fault
- Mho/Quad Distance Protection
- Shaped Zone 3 characteristic (Phase Faults)
- Single/Three Pole Tripping
- High Set Overcurrent Protection
- Stub Bus Overcurrent Protection
- DEF Protection (dual direction, DTL)
- Over/Undervoltage Protection
- Voltage Transformer Supervision
- Power Swing Blocking
- Switch On To Fault Protection
- Distance Schemes - Time Stepped, Loss of Load, Reach Extension, plus Signalling Schemes (PUR, POR, Blocking)
- DEF Schemes - Direct Trip, POR
- Single Shot Autoreclose
- Synchronism Check