Danfoss DLX 4.6 Guide de l'utilisateur télécharger pdf (Page 29)

User Guide DLX Series L00410623-1 29

4.3.4.6. Jumper Position for the System Grounding Setup

The jumper above the - NEG terminal in the customer connection area monitors the

arrangement of the DC connection according to the system grounding setup. When

delivered, the jumper is positioned in an ungrounded string configuration as standard.

Depending on the grounding requirements from the module manufacturer the jumper

must be pulled up and positioned correctly to match the required grounding of the PV

strings.

In case of a mismatch in grounding setup the following message will appear in the display

“Fuse fault”. Refer to 7.2. Table of Events.

Table 4.1: Position for the jumper monitoring the grounding setup

Connection Area Topview System

1. Jumper for the grounding setup

Ungrounded PV String Configuration:

There is no connection between the pins.

Positive grounded PV String

Configuration: The jumper connects the two

leftmost pins.

Negative grounded PV String

Configuration: The jumper connects the two

rightmost pins.

4.3.5. AC Connections (Grid)

The AC connection includes wiring from the AC distribution panel through one or more

circuit breakers to the AC terminal block of the inverter.

Verify that the AC grid specifications are compatible with the inverter characteristics

before connecting the inverter to the AC grid:

• Single phase/Split phase

• Voltage range (184 – 276 V)

• Frequency range (50 Hz ±5 Hz)

CAUTION

The AC output / Neutral of the inverter is not bonded to ground.

DANGER

Turn OFF the AC circuit breaker(s) before connecting the inverter to the utility grid

to prevent electrocution.

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Danfoss DLX 4.6 Guide de l'utilisateur Page 29