SMA SC 500CP-10-JP Maintenance Manual - Manual (Page 38)

7 Maintenance of Accessories SMA Solar Technology AG
38 SCCP-JP-WA-A4-en-12 Maintenance Manual
7.1.12 Checking the Supply Voltage
Required maintenance material (not included in the scope of delivery):
☐ Voltmeter
Requirement:
☐ The circuit breaker of the voltage supply for the Sunny Central must be switched on.
Procedure:
2. Measure the supply voltage between the terminals and connectors.
☑ Supply voltage must be at least 30 V.
✖ The supply voltage is less than 30 V?
• Check the clamp terminals. Attach the cable if necessary.
7.1.13 Checking the Ground Connection
2. Check the ground connection and the contact resistance to the ground potential.
7.1.14 Checking the LEDs on the Measurement PCB
2. If the red LED of the operating state indicator is on, contact the SMA Service Line.
1. '$1*(5
Danger to life due to electric shock or electric arc by touching live components
• Disconnect the Sunny String-Monitor from voltage sources (see Section 7.1.2).
1. '$1*(5
Danger to life due to electric shock or electric arc by touching live components
• Disconnect the Sunny String-Monitor from voltage sources (see Section 7.1.2).
1. '$1*(5
Danger to life due to electric shock or electric arc by touching live components
• Disconnect the Sunny String-Monitor from voltage sources (see Section 7.1.2).