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EPO in Parallel Systems
In parallel systems each UPS unit must have its own dry contact (voltage free) connected to J108. The
drawing below shows a “Normally Closed” installation of three UPS units in parallel.
WARNING: For parallel and separate systems with common EPO, each UPS unit must
be connected to a separate dry contact.
WARNING: Parallel EPO wiring between more UPS units can result in critical UPS
malfunctioning.
990-1957C-001
MGE™ Galaxy™ 3500 10-30 kVA 208/220 V Single and Parallel Installation
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