SMA Solar Technology AG
7.2
Removing the AST Assembly
Requirements:
☐ The pattern of thermal grease must be undamaged and free from impurities (see Section 7.1,
page 18).
Procedure:
1. Disconnect the inverter from all voltage sources (see Section 5, page 12).
2. Remove the AC-RLY assembly (see Section 6.1, page 14).
3. Unplug the connections. When doing so, unlock the
ribbon cable plug first.
4. Disconnect cables (1 green, 1 white, 1 purple, 1
black, 1 grey, 1 red and 2 blue) from the assembly.
Replacement Manual
7 Replacement of AST assembly
STP50-ACRLY-AST-RM-xx-10
19