(+44) 1306 743355

5. OMEGA EF and OC/EF Cable Fault Indicator for 11kV and 33kV Distribution networks Features New Low Cost Band Current Sensor fitted in seconds Bright LED Alarm Indication Optional - Remote indicator Fits any 3 phase cable installation Choice of power source 3 or 6 hour Reset -user settable Trip Current selectable at manufacture Options: Alarm Output/Remote Reset/LV Reset Weatherproof Enclosure Benefits Extremely Low Cost Earth Fault or Overcurrent/Earth Fault Indication Reliable Indication Minimum lifetime costs Quicker installation with new banded C/T Permanent and Transient Fault Indication FAULTWATCH and Automation Compatible Description Bowdens have been a major influence in the design of Electronic Earth Fault Indicator (EEFI) since the company first introduced this type of indicator in 1990. These indicators now form a wider and well proven range of fault indicators for application on 11 KV and 33KV cable networks. The OMEGA Fault Indicator is an exciting new development from this highly successful range of instruments that is designed to meet the demand of low cost instrumentation and minimal 'life time' costs. It incorporates all the features the engineer needs to help improve power supply quality. The OMEGA offers the option of Earth Fault Indication only or Overcurrent and Earth Fault Indication, and, with the Special Current Sensor, can be applied to conventional three cored cables as well as single cored cable installations. In common with other forms of fault indicator, the OMEGA Range provides clear visual LED indication of the passage of fault current and assist engineers to quickly locate a faulted section of network, which will lie between the last Fault Indicator to Alarm and the first not to Alarm. The OMEGA is compact, easy to install with its new Band Current Sensor, which slips around a cable quickly and easily. It offers considerable economic benefits over other electronic fault indicators and the traditional electro mechanical EFI's. OMEGA Description The OMEGA module electronics is encapsulated to provide protection from weather and environmental conditions. The controls on the front of the OMEGA can be either Reed Relay or Push Button at the client's request. All models incorporate user settable functions for powering OMEGA, for reset following fault, and for transient and/or permanent faults. The OMEGA is EMC tested to extremely high levels necessary to ensure reliable operation in the hostile electromagnetic and electrostatic environment in which it is required to function. These tests included short circuit testing to 18kA for 3 seconds and EMC testing, normally associated with protection relays (typically IEC 255 series). Special Band Current Sensor Bowdens new Band Current Sensor takes just seconds to fit and is completely weatherproof. It will sense fault currents in the cable enabling the OMEGA indicator to alarm. The Current Sensor can be connected to the cable externally to the cable box or internally. The Special Band Current Sensor can be fitted to any size of cable and can be extended to fit any spread of single cored cable configuration in cable boxes. The Overcurrent/Earth Fault model will have one Special Band Current Sensor per phase. OMEGA Models There are two models of the OMEGA fault indicator; Earth Fault and Earth Fault/Overcurrent Earth Fault Indicators 'OMEGA' EFI Standard - Standard 3 or 6 hour reset, LV Reset user settable, Remote indicator Contacts, Transient Fault option 'OMEGA' EFI Automation- As 'OMEGA EFI Standard' + Alarm Output, remote Reset Overcurrent and Earth Fault Indicators 'OMEGA' OC/EFI Standard---Standard 3 or 6 hour reset, LV Reset user settable, Remote Indicator Contacts, Transient Fault option 'OMEGA' OC/EFI Automation---As 'OMEGA OC/EFI Standard' + Alarm Output, Remote Reset

Ian Bowden or Trevor Newman 
Telephone:	(+44) 1306 743355
FAX:	(+44) 1306 876768

Bowden Bros Ltd
Brickworks House, 
Spook Hill, 
North Holmwood,
Dorking, Surrey RH5 4HR
United Kingdom

General Information: info@bowden-bros.com
Sales: sales@bowden-bros.com
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