SMA Solar Technology AG
L1+
L2+
L‒
PE
3. Discharge the DC inputs at the contact points L1+ to grounding conductor, L2+ to grounding
conductor, L- to grounding conductor, L1+ to L- and L2+ to L-.
Damage to the inverter due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through
electrostatic discharge.
• Ground yourself before touching any component.
5.2
STP 15000TLEE / STP 20000TLEE
Prior to performing any work on the inverter, always disconnect it from all voltage sources as
described in this section. Always adhere to the prescribed sequence.
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000 V or higher.
Procedure:
1. Disconnect the miniature circuit breaker from all 3 line conductors and secure against
reconnection.
2. If the multifunction relay is used, disconnect any supply voltage to the load and secure against
reconnection.
3. Switch off the integrated DC load-break switch.
Replacement Manual
5 Disconnecting the Inverter from Voltage Sources
NOTICE
WARNING
STPTLEE-STPTL-10-BPDCLS-RM-xx-10
17