Checking The Surge Arresters; General Maintenance Work - SMA GRID-CONNECT-BOX 12 Instructions D'emploi

10 Maintenance
• Disconnect the Grid-Connect-Box and multicluster system from voltage sources (see Section 8, page 22)
• Contact the Service (see Section 13, page 35). This will trigger the requisite spare parts order.
4. If the residual-current device has tripped, wait at least five seconds.
5. Reactivate the residual-current device after at least five minutes. To do this, move the switch lever of the residual-
current device into the top position.
6. Start the multicluster system at the master of the main cluster (see Sunny Island operating manual).
7. Document the test result in accordance with the locally applicable standards and directives. This is your proof that
regular inspection has taken place.
10.2

Checking the Surge Arresters

Inspection interval for surge arresters
The inspection interval for surge arresters depends on the prevailing operating temperature.
• At prevailing operating temperatures of up to 40°C: inspect every 6 months.
• At prevailing operating temperatures of above 40°C: inspect every 3 months.
Instruction of end users
Because the protective cover remains in place during this test, testing is not hazardous and can be performed by
the end user. However, if the residual-current device does not trip, the Grid-Connect-Box and the multicluster
system must be disconnected from voltage sources by a qualified person.
• Instruct the end user on the necessary procedure.
• Inform the end user that the inspection interval must always be complied with.
• Point out to the end user that if a defect is detected, a qualified person is required to perform the next steps.
Procedure:
1. Check whether the signal light on the surge arrester F340 is green or red.
If the signal light on the surge arrester shows green, the surge arrester is in proper working order.
If the signal light on the surge arrester shows red, the surge arrester is defective.
2. If the surge arrester is defective, contact Service (see Section 13, page 35). This will trigger the requisite spare
parts order.
3. Document the test result in accordance with the locally applicable standards and directives. This is your proof that
regular inspection has taken place.
10.3

General Maintenance Work

The general maintenance work must be performed every twelve months.
Danger to life due to electric shock when live components or cables are touched
High voltages are present in the conductive components or cables of the product. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Disconnect the product from voltage sources and make sure it cannot be reconnected before working on the
device.
• Only disassemble the protective covers, if the product is disconnected from all voltage sources.
• Wear suitable personal protective equipment for all work on the product.
28 GRID-BOX-12-3-20-BE-xx-12
DANGER
SMA Solar Technology AG
Operating manual