Connecting The Inverter To The Utility Grid - SMA SUNNY TRIPOWER CORE2 Operating Manual

8 Electrical Connection
Overvoltage category:
The product can be used in grids of overvoltage category III or lower in accordance with
IEC 60664-1. That means that the product can be permanently connected to the grid-connection
point of a building. In case of installations with long outdoor cabling routes, additional measures to
reduce overvoltage category IV to overvoltage category III are required (see the Technical
Information "Overvoltage Protection" at www.SMA-Solar.com).
8.2.2

Connecting the Inverter to the Utility Grid

Requirements:
☐ The connection requirements of the grid operator must be met.
☐ The grid voltage must be within the permissible range. The exact operating range of the
inverter is specified in the operating parameters.
Required material (not included in the scope of delivery):
☐ Protective grease (only for conductors made of aluminum)
☐ 4 heat-shrink tubings
☐ 4 ring terminal lugs with hole diameter 12 mm (for conductors made of aluminum bimetal
terminal lugs made of aluminum and copper)
Procedure:
1. Disconnect the AC miniature circuit breaker from all 3 line conductors and secure against
reconnection.
2. Ensure that all 4 DC load-break switches have been
switched off and been secured against
reconnection.
3. Open the cable compartment (see Section 7, page 31).
4. Dismantle the AC cable (≤ 375 mm).
If the optional AC sealing plate is used, dismantle all 4 cables.
5. Strip the insulation of L1, L2, L3 and the grounding conductor (30 mm).
34 STP110-60-BE-en-13
SMA Solar Technology AG
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