SMA STP 60-US-10 Replacing Defective Surge Arresters - Manual

STP60-ATSPD-SG-xx-10 | 139R0135 | Version 1.0 ENGLISH
1 Safety Information
2 Replacing Defective Surge
Arresters
Scope of delivery of the replacement kit:
• 3 AC surge arresters or
• 3 DC surge arresters
2.1 Removing Defective Surge
Arresters
1. Loosen the three screws on the front cover of the
inverter.
2. Open the cover and flap it back. A magnet enables the
cover to stay open. For detailed information on how to
open and close the inverter, refer to the installation
manual of the STP 60-10 inverter.
3. Look for the surge arresters with a red marking in the
window. The red marking indicates that the surge
arrester must be replaced. See figure 1.1 for the
position of the surge arresters.
4. Pull out the defective surge arrester. See (1) in figure
1.2 and (1) in figure 1.3.
Danger to life due to high voltages in the inverter
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.
• All work on the inverter must be carried out by
qualified persons only. Qualified persons must at
least have the following skills:
– Knowledge of how SMA inverters work and are
operated
– Training in how to deal with the dangers and
risks associated with installing, repairing and
using electrical devices and installations
– Knowledge of how to safely disconnect SMA
inverters
– Knowledge of all applicable laws, standards
and directives
• Always disconnect the inverter from voltage sources
before performing any work and secure it against
reconnection.
• After disconnecting the inverter, observe a waiting
time of at least five minutes to allow the residual
voltages to discharge.
• Ensure that there is no externally visible damage to
the spare part.
• Make sure to use only the spare parts provided for
the replacement. Spare parts must only be used for
their intended purpose. In case of uncertainty or if
you have questions concerning the spare part,
contact the Service prior to the replacement (for
contact details, see www.SMA-Solar.com).
• Do not touch any live components of the inverter.
Risk of burns due to hot enclosure parts
The temperature of the cooling elements and components
in the inverter can exceed 70°C/158°F. There is a risk of
burns.
INFORMATION
Only surge arresters marked with a red or yellow
stripe can be replaced. Surge arresters with a green
stripe do not need to be replaced.
Replacing Defective Surge Arresters
STP 60-10/STP 60-US-10