Connecting The Inverter To The Utility Grid - SMA Sunny Tripower CORE1-US Instructions D'installation

SMA Solar Technology AG
6.2.2

Connecting the Inverter to the Utility Grid

Requirements:
☐ All electrical installations must be carried out in accordance with the local standards and the
National Electrical Code
☐ The AC and DC electric circuits are isolated from the enclosure. If required by the National
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Electrical Code ANSI/NFPA 70 or Canadian Electrical Code
responsible for grounding the system.
☐ 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.
Procedure:
1. Disconnect the circuit breaker from all three line conductors and secure against reconnection.
2. Ensure that the AC load-break switch and the DC load-break switch are in the O position and
are secured against reconnection.
3. If the enclosure lid of the AC-Connection Unit is
mounted, remove all ten screws of the enclosure lid
(TX 25) and remove the enclosure lid towards the
front.
4. Remove the adhesive tape from the enclosure opening for the AC connection.
5. Insert the conduit fitting into the opening and tighten from the inside using the counter nut.
6. Attach the conduit to the conduit fitting.
7. Guide the conductors from the conduit into the AC-Connection Unit.
8. Connect the equipment grounding conductor either to the connection plate or to the DIN rail
terminal. To do this, proceed as follows.
9. Connecting the equipment grounding conductor to the connection plate:
• Strip the insulation of the equipment grounding conductor by 27 mm (1.06 in).
• Slightly loosen one of the screws with which the clip is connected to the connection plate
and completely remove the other screw (TX 25).
• Then place the equipment grounding conductor
onto the connection plate, route the clip via the
equipment grounding conductor and tighten
both screws (TX25, torque: 6 Nm (53 in-lb)).
• Ensure that the conductor is on the connection plate.
Installation Manual
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ANSI/NFPA 70 or the Canadian Electrical Code
6 Electrical Connection
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CSA C22.1.
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CSA C22.1, the installer is
10x
STP33-62-US-41-IA-xx-13 31