Bedienungsanleitung SMA Sunny Boy 3600TL (Seite 25 von 60) (Englisch)

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Grounding conductor monitoring:

The inverter is equipped with a grounding conductor monitoring device. This grounding conductor

monitoring device detects when there is no grounding conductor connected and disconnects the

inverter from the utility grid if this is the case. Depending on the installation site and grid

configuration, it may be advisable to deactivate the grounding conductor monitoring. This is

necessary, for example, in an IT system if there is no neutral conductor present and you intend to

install the inverter between two line conductors. If you are uncertain about this, contact your grid

operator or SMASolarTechnologyAG.

☐ Grounding conductor monitoring must be deactivated after initial start-up depending on the

grid configuration (see Section8.5, page40).

Safety in accordance with IEC62109 when the grounding conductor monitoring is

deactivated

In order to guarantee safety in accordance with IEC62109 when the grounding conductor

monitoring is deactivated, carry out one of the following measures:

• Connect a grounding conductor made of copper wire with a cross-section of at least

10mm² to the connecting terminal plate for the AC cable.

• Connect additional grounding with the same cross-section as the connected grounding

conductor to the connecting terminal plate for the AC cable (see Section6.3.3, page27

). This prevents touch current if the grounding conductor at the connecting terminal plate

for the AC cable fails.

Connection of additional grounding

In some countries, additional grounding is generally required. In each case, observe the

locally applicable regulations.

• If additional grounding is required, connect an additional grounding with the same cross-

section as the connected grounding conductor to the connecting terminal plate for the AC

cable (see Section6.3.3, page27). This prevents touch current if the grounding

conductor at the connecting terminal plate for the AC cable fails.

6.3.2 Connecting the Inverter to the Utility Grid

Requirements:

☐ The connection requirements of the grid operator must be met.

☐ The grid voltage must be in the permissible range. The exact operating range of the inverter is

specified in the operating parameters.

Procedure:

1. Disconnect the circuit breaker and secure it against reconnection.

2. If an additional DC load-break switch is available, switch off the DC load-break switch and

secure against reconnection.

3. If the ESS is installed and plugged in, remove the ESS.

4. If the lower enclosure lid is mounted, loosen all screws of the lower enclosure lid using an

Allen key (AF3) and remove the enclosure lid.

6 Electrical Connection

SMA Solar Technology AG

Operating Manual 25SB30-50TL-21-BE-en-11

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