SMA Sunny Central 1000CP-JP, Руководство по обслуживанию

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6 Maintenance SMA Solar Technology AG
Maintenance Manual SCCP-JP-B1-WA-en-22 58
6.4.2.9 Checking the Fuses/Disconnection Blades
Required maintenance material (not included in the scope of delivery):
☐ A high-temperature resistant, chemically inert special grease
DANGER
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 4, page 25).
Procedure:
1. Check the fuses/disconnection blades and tension springs for any discoloration or change in appearance.
If they are discolored or changed in any way, replace them.
2. Check insulation and terminals for any discoloration or change in appearance.
If insulation and terminals are discolored or changed, contact us (see Section 9 "Contact", page 67).
3. Remove fuses / disconnection blades one by one from the fuse holders. For this, use fuse extractor. It must be
possible to remove the fuse without effort.
4. Check whether the contact surfaces of the fuses / disconnection blades are free from hardened grease. Clean
contact surfaces if they are covered with hardened grease. Then apply new grease to the surfaces.
5. Insert all fuses and disconnection blades into the fuse holders. For this, use fuse extractor.
6.4.2.10 Checking the Bolted Connections of the Power Cabling
DANGER
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 4, page 25).
NOTICE
Damage to bolted connections through overtightening
If the permitted torques are exceeded, bolted connections can be damaged. In this case, fault-free operation of the
inverter is no longer ensured.
• Only tighten loose bolted connections to the prescribed torque. Torque specifications are indicated in the
circuit diagram of the inverter. If there is any information missing, contact (see Section 9 "Contact", page 67).
Procedure:
1. Check that the bolted connections of all assemblies are securely in place.
If bolted connections are loose, tighten them using a torque wrench.
2. Check whether all bolted connections of the power cabling are securely in place.
If bolted connections are loose, tighten them using a torque wrench.