The ALS module provides a source of plus and minus 15Vdc needed by the operational amplifier and digital logic circuits, while DLS module provides the additional +15 Vdc capacity for driving large amounts of digital logic circuits and for extra trip outputs.
The ALS-1 and DLS-1 power supply modules are used as direct replacement for the ALS and DLS power supplies and isolate the relay system logic and sensing circuits from the station battery.
Why ABB?
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Long production life, ease of application and reliable protection
- High quality design
- 12 year warranty
- Short lead times
- Consistent on-time delivery
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24/7 customer support