AVARA TECHNOLOGIES. C37.94 OPTICAL DATA INTERFACE UNIT

Brochure

Teleprotection schemes are used by power authorities to deliver electricity safely and securely. While protection relays are available with a range of interface types, the Avara optical C37.94 interface is becoming increasingly common. By implementing the C37.94 standard within the protection relay and the communications equipment, the need for additional media converters is eliminated.

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Features

Technical specifications

Application Note

Technical Highlights

- Compliant with IEEE C37.94 Fibre Standard

- Slim Form Factor

- 4 x IEEE C37.94 Channels

- ST Connectors Multimode Fibre (62.5um / 125um)

- DB2 & DM2+ Compatibility

- Programmable Timeslot Allocation

- Q1 Managed Through DB2 or DM2+

- Sub-Rack mount or Stand-alone Mechanics

- Shelf Powered 20 to 72VDC Power Supply

- -5 °C to +65 °C Operation

Optical Interfaces
Number of Interfaces	4
Interface Type	Multimode Fibre (62.5um / 125um)
Standard	IEEE C37.94
Connector Type	ST
Wavelength	820 ± 40nm
Clock Timing	2048 ± 100ppm
Intrinsic Jitter	± 0.1 UI
Jitter Tolerance	± 0.2 UI
Data Rate	Nx64kbps (N=1..12)
Range	> 2km
Optical Power Budget	8db Minimum, 15db Typical

Management
Local	CLI (RS232)
Remote	DCNA, Service Terminal, MSTE via Q1 Protocol

Power
Power Supply	-20 to -72 VDC
Power Consumption	7w

MTBF
	65 Years

Alarm Contacts
	Capable of Driving A&B Sub Rack Alarms on M4 or Dynanet sub-racks

Environmental
Operating Temperature	5 °C to +65 °C
Relative Humidity	5-90% (Non-condensing)

Standards
	EN55022 Class A Emissions
	EN60950 Safety
	41003 Laser Safety
	AS/ACIF S016
	EN55024 Immunity
	EN50082-2 Generic Immunity
	EN60825-1 Class 1
	IEEE C37.94
	ETS 300 019 -1-1 Operational
	ETS 300 019 -1-2 Storage
	ETS 300 019 -1-3 Transport
	IEC 61850

Mechanical
Height	233mm
Depth	160mm
Width	25mm

DFX1000 typical application:

dfx1000 application notes