Danfoss TripleLynx CN Installation Manual download pdf (Page 17)

8. Close the front cover, and remember to verify that both front screws are applied with

the correct torque to obtain PE connection.

9. Close main circuit breaker.

For safety, check all wiring. Connecting a phase wire to the neutral terminal may

permanently damage the inverter. Do not remove the short circuit bridge at (1).

3.6. PV Connection

Note:

When choosing the installation place, ensure that all labels are visible at all times.

For details refer to the section

Specifications

Do NOT connect PV to earth!

Use a suitable voltmeter that can measure up to 1000 V DC.

1. First verify the polarity and maximum voltage of the PV arrays by measuring the PV

open circuit voltage.The PV open circuit voltage must not exceed 1000 V DC.

2. Measure the DC voltage between the plus-terminal of the PV array and Earth (or the

green/yellow PE cable). The voltage measured should approximate zero. If the voltage

is constant and not zero there is an insulation failure somewhere in the PV array.

3. Locate and fix the failure before continuing.

4. Repeat this procedure for all arrays. It is allowed to distribute the input power on the

inputs unevenly, presuming that:

• The nom. PV power of the inverter is not exceeded (8.2 / 10.3 / 12.9 / 15.5

kW).

• The individual input is not exceedingly loaded, and not more than 6000 W.

• The maximum short circuit current of the PV modules at STC (Standard Test

Conditions) must not exceed 12 A per input.

Illustration 3.13: DC Connection Area

On the inverter turn the PV load switch into

off position. Connect the PV cables by means

of MC4 connectors. Ensure correct polarity!

The PV load switch can now be switched on

when required.

3. Installation

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Danfoss TripleLynx CN Installation Manual Page 17