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Load draws too much real power
Manifests as Underfrequency (81-O)
Utility Source
Circuit breaker opened, feeder islanded
Load = 15000kW
180kW
DG
With over 60 years of experience in building
quality and cost-effective engine and generator
protection, we can help you meet your toughest
challenges.
Whether its our standard panels or panel solu-
tions customized for your application needs, or
our comprehensive series of gages, switches and
instrumentation, Murphy’s solution oriented
offerings have you covered.
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Engineering and design
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Turnkey delivery
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Engine and generator control panels
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Automation systems
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Generator controls for NFPA-110, Levels 1 & 2
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Off-Highway / Mobile
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Emergency Backup systems
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Prime Power
We Are Your PowerGen
Control Solution