PV Powered PVP4800 Informations techniques télécharger pdf (Page 38)

9. Ensure all connections are wired correctly, properly torqued and that

there are no loose strands of wire.

10. Remove the 1A fuse from the external port on the inverter by

unscrewing the cap housing the fuse. Refer to Figure 4-2 for the

location of the fuse.

11. Conrm the AC/DC Disconnect is in the OFF position and remove the

material covering the PV array.

The PV array should now be exposed to sunlight, energizing the PV

side of the system.

12. With a digital voltmeter, verify the open circuit voltage and polarity of

the PV array conductors.

Set your digital volt meter to read DC voltage, using the red lead on an

ungrounded conductor and the black lead on the grounded conductor.

Verify the reading matches that of the designed voltage and is below

500VDC. If a negative reading results, the polarity of your PV array

conductors are reversed. Correct the polarity before commissioning the

inverter/disconnect unit.

13. Secure the disconnect’s lid by reversing the steps in the inverter

installation section of the manual.

This completes the wiring for the inverter and disconnect to the PV system

array and the electric utility.

To start the inverter/disconnect unit, see Chapter 5,

Operation

4.9 Wiring Multiple Inverters with Integrated AC/DC Disconnects

If there is more than one PV system array, make sure the positive, negative

and ground conductors are labeled for each array. For example:

• PV array 1 = PV1 pos, PV1 neg, PV1 ground

• PV array 2 = PV2 pos, PV2 neg, PV2 ground

• PV array 3 = PV3 pos, etc.

The AC and DC wiring connections are the same for multiple and single

inverter/disconnect unit installation. The system grounding requirements

vary slightly from a single inverter to a multiple inverter installation with

AC/DC Disconnects. The DC GEC must maintain continuity through all

pieces of equipment, and careful attention must be paid to avoid ground

loops.

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PV Powered PVP4800 Informations techniques Page 38