FAQs
I'm testing for an AC trouble on the SLE-ULPS. When I remove AC power, the trouble light indicates an AC trouble but the relay did not trip. Is there a relay trip delay time? If so, what is its default duration and can this duration be changed?
Yes, there is a relay trip delay time; the default duration is a 2 hour delay. This delay is required by UL 864 and is in accordance with NFPA 72. This delay cannot be changed or programmed into the SLE-ULPS.