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Siemens Protection Devices Limited. Reyrolle - protecting industry since 1886
Protection Relays

OHMEGA 308 - 7SG16

The Ohmega relays are a range of numeric impedance measuring distance protection relays.
Functionality
- 50/60Hz
- 3 zone distance protection
- high set overcurrent
- voltage transformer supervn
- power swing blocking
- switch on to fault
- signalling schemes
- single shot autorelcose
- DEF
- synchronism check
- SEF
- overvoltage

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Documentation

Catalogue Sheet
OHMEGA
Catalogue Sheet 894k

Compliance Certificate
Ohmega 308 Compliance Certificate 85k
Technical Manual
OHMEGA 300 and 400
list of models 16k

OHMEGA 308 Technical Manual
Section 01- Description of Operation 180k

OHMEGA 308 Technical Manual
Section 02- Impedance Function 118k

OHMEGA 308 Technical Manual
Section 03- Protection Schemes 83k

OHMEGA 308 Technical Manual
Section 05- Performance Specification 90k

OHMEGA 308 Technical Manual
Section 06- Communication Interface 15k

OHMEGA 308 Technical Manual
Section 07- Application Guidelines 211k

OHMEGA 308 Technical Manual
Section 08- Installation 10k

OHMEGA 308 Technical Manual
Section 09- Commissioning 1.1Mb

OHMEGA 308 Technical Manual
Section 10- Maintenance 8k

OHMEGA 308 Technical Manual
Section 11- Diagrams 541k

OHMEGA 308 Technical Manual
Section 12- Autoreclose and check Sychronising 69k

OHMEGA 308 Technical Manual
Section 12- Directional Earth Fault 14k

OHMEGA 308 Technical Manual
Section 12- Sensitive Earth Fault 8k

OHMEGA 308 Technical Manual
Section 12- Voltage Protection 14k

OHMEGA 308 Technical Manual
Section 4-Relay Settings 149k

Technical Report
Communication Interface Manual 1.3Mb
Current Transformer Requirements 104k
Fibre - Optics Application Guide 101k
Wiring Diagrams
 Wiring Diagrams for OHMEGA 308
Panel Drilling Diagrams
 Panel Drilling Diagrams for OHMEGA 308