Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This one, concerning whether UPS can be used to supply emergency lighting power, is answered by MGE UPS Systems:
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| UPS for emergency lighting. |
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Question: I'm currently designing a emergency light system for an auditorium designed to accommodate over a 1000 persons (used 40 weekends of the year). The client has been offered a
UPS (10kW rated). Could that unit be used for supplying the emergency lights in this convention hall? Obviously, there would need to be built a small control panel for test purposes etc.
The UPS is rated above the power requirements needed. In each board in the convention hall, there would be a mains failure unit that would signal a voltage loss to the UPS unit. Over the necessary circuit protection, this would then provide the back up power. Generators are allowed as a backup system, so why not UPS units? It appears that in the US, this type of arrangement is allowed.
Answer: This article comes from Engineeringtalk - it may help. Socomec UPS has recently expanded its popular Digys range with the introduction of the Digys EM. Rated from 10-60kVA, it is ideal for all emergency lighting applications, even where discharge lighting is being used with leading power factor and high starting currents (typically three times nominal).
The new unit also provides the perfect solution for emergency lighting applications that still request galvanic isolation between the input and output The Digys EM is fitted with a galvanic isolation transformer as standard, and configured to operate in the same fashion as an emergency lighting inverter. On-site programmable operation and line interactive modes gives the optimum performance for all applications.
Digys EM can operate in bypass (providing the highest level of operating efficiency) and switch to inverter when a mains disturbance is detected. Additionally, where high frequency lighting is being used it can be programmed to operate in standard on-line, double conversion UPS mode, removing any possibility of the lighting extinguishing and being unable to re-strike in the event of a power failure.
By using leading edge DSP (digital signal processing) technology and the galvanic isolation transformer, Socomec has ensured the Digys meets and exceeds any emergency lighting specification, reducing the risk level for the consulting engineer and contractor when selecting the emergency lighting system. It also has low levels of harmonic re-injection, which is particularly important where the installation is supported by a diesel generator.
In order to discuss the application in full, please can you contact our sales department on 0845 077 1945.
To see many more Q & A in Voltimum UK's Experts Area, please click on the link:
http://www.voltimum.co.uk/consult.php?universe=consult.index.questions
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Related contacts
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Contact: Jason Koffler
UK Channel Sales Manager
MGE UPS Systems
Orion House, 171-177 High Street,
Wealdstone, Harrow HA3 5EA
Tel: 0845 077 1945
Fax: 0845 077 1946
Email: mgesalesuk@mgeups.com
Web: www.mgeups.co.uk |
MGE UPS Systems
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Source: MGE UPS Systems & James Hunt |
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