SMA TCS 500-SC Maintenance manual - Manual (Page 19)

SMA Solar Technology AG 5 Maintenance After Disconnection
Maintenance manual TCS-CP-WH-en-10 19
5.3 Checking the AC Circuit Breaker for Functionality
Additionally required maintenance material (not included in the scope of delivery):
☐ A testing device approved by the manufacturer of the AC circuit breaker (e.g. TT1 from ABB).
Procedure:
• Use the testing device to check whether the AC circuit breaker is ready for operation
(instructions are included in the testing device documentation).
If the AC circuit breaker is not ready for operation, contact the SMA Service Line.
5.4 Torques
5.4.1 Torque List
5.4.2 Checking Torque of Screw Connections
2. Check whether screw connections are tight.
If screw connections are loose, tighten them using a torque wrench.
/05*$&
Damage to screw connections from over-tightening
• Only apply the prescribed torque to tighten loose screw connections.
Contact the SMA Service Line if specifications are missing.
Diameter Torque
M4 3 Nm
M5 6 Nm
M6 10 Nm
M8 16 Nm
M10 30 Nm
M12 60 Nm
M16 120 Nm
1. %"/(&3
High voltages are present in the Transformer Compact Station. Failure to adhere to
the safety messages will lead to death or serious injuries as a result of electric shock.
• Disconnect the low voltage (see Section 4.2).
• Disconnect the medium voltage (see Section 4.3).
• Disconnect the control voltage (see Section 4.4).