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2 safety, 1 safety information, Safety – SMA 20000TL Service Manual User Manual

Page 6: Safety information, 2safety

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Safety

2.1

Safety Information

This section contains safety information that must be observed at all times when working on or with
the product.
To prevent personal injury and property damage and to ensure long-term operation of the product,
read this section carefully and observe all safety information at all times.

Danger to life due to high voltages of the PV array
When exposed to sunlight, the PV array generates dangerous DC voltage which is present in the
DC conductors and the live components of the inverter. Touching the DC conductors or the live
components can lead to lethal electric shocks. If you disconnect the DC connectors from the
inverter under load, an electric arc may occur leading to electric shock and burns.

• Do not touch non-insulated cable ends.
• Do not touch the DC conductors.
• Do not touch any live components of the inverter.
• Have the inverter mounted, installed and commissioned only by qualified persons with the

appropriate skills.

• If an error occurs, have it rectified by qualified persons only.
• Prior to performing any work on the inverter, disconnect it from all voltage sources as

described in this document (see Section 2.2 "Disconnecting the Inverter from Voltage
Sources", page 7).

Danger to life due to electric shock
Touching an ungrounded PV module or array frame can cause a lethal electric shock.

• Connect and ground the PV modules, array frame and electrically conductive surfaces so

that there is continuous conduction. Observe the applicable local regulations.

Risk of burns due to hot enclosure parts
Some parts of the enclosure can get hot during operation.

• Do not touch any parts other than the lower enclosure lid of the inverter during operation.

2 Safety

SMA Solar Technology AG

Service Manual for Installers

STP20-25TL-SG-en-11

6

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