SMA SC 500HE-20 Maintenance Manua - Manual (Page 21)

SMA Solar Technology AG 6 Maintenance Under Voltage-Free Conditions
Maintenance Manual SC500-800HE20-WH-en-10 21
6.4 Maintaining the Interior of the Switch Cabinet
6.4.1 Disassembling the Protective Covers
2. Remove protective covers.
6.4.2 Checking the Interior of the Switch Cabinet
2. Remove dirt and dust from the interior of the switch cabinet and from all assemblies
(e.g. DC switch-disconnector and AC circuit breaker).
3. Remove moisture. To do this, use a cloth.
6.4.3 Checking the Fuses/Disconnecting Blades
2. Check the LV/HRC fuses/disconnecting blades and tension springs for discolouration or
changes to their appearance.
If the LV/HRC fuses/disconnecting blades or tension springs are discoloured or if there are
changes to their appearance, replace them.
3. Check insulation and terminals for discolouration and changes to their appearance.
If the insulation or terminals are discoloured or if there are changes to their appearance, contact
the SMA Service Line.
1. %"/(&3
Danger to life from electric shock or electric arc when touching live components.
• Disconnect the inverter (see Section 6.1).
1. %"/(&3
Danger to life from electric shock or electric arc when touching live components.
• Disconnect the inverter (see Section 6.1).
1. %"/(&3
Danger to life from electric shock or electric arc when touching live components.
• Disconnect the inverter (see Section 6.1).