SMA SC 500HE-20 Maintenance Manua - Manual (Page 55)

SMA Solar Technology AG 7 Maintaining the Accessories
Maintenance Manual SC500-800HE20-WH-en-10 55
7.3.10 Checking the Surge Arrester
2. Check whether the ready indicator on the surge arrester is red.
If the ready indicator is red, replace the protection module.
1. %"/(&3
Danger to life from electric shock or electric arc when touching live components.
• Disconnect the SMA String-Combiner (see Section 7.3.1).