Site Preparation – Operating Environment
990-2283 Smart-UPS® VT 10-40kVA 400V Site Preparation and Installation Manual 21
EPO switch wiring
The UPS must be connected to either a dry contact or a 24VDC Emergency Power Off (EPO) switch or
according to national rules.
WARNING!
At 100% non-linear load (EN50091-3 standard), the neutral shall be rated for 200% phase
current.
See “Communication Wiring to EPO and Optional Equipment” on page 37 in this
manual.
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