Bowdens OMEGA III Earth Fault Indicator
The Bowdens OMEGA III earth fault indicator combines a high-intensity red LED with a black/red flag disc to provide two forms of local fault indication. An optional remote LED indicator allows fault status to be displayed outside the substation, giving you greater flexibility when checking indications.
User-selectable trip current settings from 20 to 200 A, fault duration settings from 20 to 200 ms and timed reset settings between 3 and 12 hours allow you to configure the unit to suit your application.
Choose replaceable lithium battery power or LV mains power, with an RTU power and reset option also available. The LV version uses high-capacity supercapacitors to support fault indication when the LV supply is absent, so no battery is required.
Bowdens OMEGA III Key Features:
- Dual local indication: A high-intensity red LED and black/red flag disc provide clear visual fault indication.
- Adjustable detection settings: Select the trip current and fault duration to suit your requirements.
- Flexible timed reset: Choose a reset setting between 3 and 12 hours.
- Remote indication option: Connect a remote LED indicator for use outside the substation.
- Two alarm output relays: Volt-free changeover contacts with latching or fleeting operation support external alarm signalling.
- Battery-free LV operation: Supercapacitors support indication during loss of the LV supply, removing the need for a battery in the LV version.
- Manual test and reset: Push-button controls provide convenient operation at the unit.
Specifications:
| Features | |
| Fault indication and control |
| Local fault indication | High-intensity red LED and black/red flag disc |
| Trip current | User-selectable from 20 to 200 A |
| Fault duration | User-selectable from 20 to 200 ms |
| Timed reset | User-selectable between 3 and 12 hours |
| Alarm output relays | Two volt-free changeover relays |
| Relay operation | Latching or fleeting |
| Manual test and reset | Push-button controls |
| Remote LED indication | Optional indicator for use outside the substation |
| Power and reset options |
| Battery powered version | Replaceable lithium battery with an average life of 10 years under normal operating conditions |
| LV powered version | LV mains supply with high-capacity supercapacitors supporting indication when the supply is absent |
| Battery required for LV version | No |
| LV supply reset | Available when powered from LV mains |
| RTU supply | Optional power and reset from an RTU supply |
| Current transformer compatibility |
| Compatible CT types | Bowdens Band CT or conventional cast resin core balance CT |
Current transformer compatibility
The OMEGA III operates with a Bowdens Band CT or a conventional cast resin core balance current transformer. Discuss your required CT and any remote LED indication accessories with AcutestDirect when selecting your configuration.
Clear indication. Flexible control.
Bring local visibility and remote signalling together with the Bowdens OMEGA III. Dual fault indication, adjustable detection settings and a choice of power options give you the flexibility to match the unit to your installation. Choose long-life battery power or battery-free LV LV operation, supported by practical test, reset and alarm output functions.