Growatt SPH 4000-10000TL3 BH-UP handleiding

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5.4.9 Connecting the dry contact port

Step 8: If no other cables need to be installed, lock the waterproof cover to the inverter

with screws.

Step 2: Thread the swivel nut over the cable.

Step 6: Thread the network cable through the cable gland.

The dry contact is used to communicate with external devices (such as remote start of the

water heater). The wiring steps are as follows:

Step 3: Press the cable support sleeve out of the cable gland.

Step 7: Thread cables into connection terminal of the inverter, then press the terminal

with relevant tools and make sure cables are securely connected.

Step 1: Unscrew the swivel nut from the cable gland.

Step 4: Remove the filler plug from the cable support sleeve.

Step 5: Route the network cable through an opening in the cable support sleeve.

Step 9: Screw the swivel nut onto the waterproof cover.

1. If the cable is not used, e.g. the dry contact cable, please do not remove the filler plug

from the cable support sleeve.

2. The dry contact can provide a source output of 12 V and less than 200 mA to the driver

replay and others. Please be aware of the output power.

Note:

DRY CONTACT

Figure 5.41

Figure 5.42

5.4.10 Grounding the inverter

The SPH must be grounded properly with the grounding cable. The ground point is

showed below. The specification of the grounding cable should be greater than 10 AWG.

Figure 5.43

Chart 5.44

The grounding conductor of the PV panel racking must be firmly grounded on the PV array

side, inverter side and battery side. The cross-sectional area of the grounding conductor

should be the same as that of the DC grounding conductor. The minimum wire size is 10

WAG.

Grounding device

Grounding the PV array

Please select the DC grounding method, the PV grounding junction box, and the DC

grounding wire size according to local standards.

DC grounding

If the positive or negative pole of the PV array in the PV system needs to be grounded, the

inverter output should be insulated with an isolation transformer. The isolation

transformer shall comply with IEC 62109-1, -2.

PV array Inverter

Transformer

Grid

The connections are as follows:

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