Connecting the DC Wiring

•Female and male DC cable connectors to mate with the Multi-Contact connectors PV-ADSP3/GWD (positive) and PV-ADBP3/GWD (negative) on the GT Inverter. You will need two connectors (one female and one male) for each PV string (you can connect up to two PV strings to the GT Inverter).

Connecting the PV Array

The following procedure is illustrated in Figure 3-2.If there will be more than one PV string, label the positive and negative wire pairs appropriately (for example: PV 1, PV 2).

To wire the PV array to the GT Inverter:

1.If necessary, install DC conduit from the PV string(s) to the GT Inverter.

2.Terminate the wires coming from the PV string(s) with appropriate Multi-Contact connectors.

CAUTION: Equipment damage

Before connecting the PV array to the inverter, check to ensure correct polarity and that the voltage between the positive (+) and negative (–) is below 600 Vdc (UPV≤600 Vdc).

To check the PV array DC voltage:

1.Uncover the PV arrays and expose them to full sunlight. The sunlight must be intense enough to produce the required output voltage.

2.Measure the PV array open circuit DC voltage across the DC positive (+) and negative

(–) terminals. This voltage must be less than 600 Vdc. Voltage over 600 Vdc will damage the inverter.

3.Cover the PV arrays with an opaque material again.

3.Connect the POSITIVE (+) wire from the #1 PV string to a GT Inverter PV positive (+) quick connect.

4.Connect the NEGATIVE (–) wire from the #1 PV string to a GT Inverter PV negative (–) quick connect.

5.If necessary, repeat for the #2 PV string. Double check that the wires are in the proper locations.

If only one PV string connection is used, cover the unused PV quick connects with the seals provided.

WARNING: Shock hazard

Never connect or disconnect the PV modules from the GT Inverter under load (by pulling the PV quick connects before disconnecting the grid). Always disconnect the GT Inverter from the grid first.

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