Danfoss VLT 8000 AQUA Guida di Installazione Scaricare il pdf (Pagina 6)

VLT® 8000 AQUA

■ Extra protection with regard to indirect contact

ELCB relays, multiple protective grounding or

grounding can be used as extra protection, provided

that local safety regulations are complied with. In

the case of an ground fault, a DC content may

develop in the faulty current.

Never use ELCB relays, type A, since such relays

are not suitable for DC fault currents.

If ELCB relays are used, this must be:

• Suitable for protecting equipment with a direct

current content (DC) in the faulty current

(3-phase bridge rectifier)

• Suitable for power-up with short charging

current to ground

• Suitable for a high leakage current

MG.80.A6.22 - VLT is a registered Danfoss trademark

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Danfoss VLT 8000 AQUA Guida di Installazione Pagina 6