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SMA Solar Technology AG
6 Electrical Connection
6.5.2 Extension of the Deactivation Limits
The deactivation criteria (voltage, frequency) are specified by the country parameters.
Sunny Tripower inverters have the additional country data set "MVtgDirective". This parameter
expands the deactivation limits of the inverter for voltage and frequency to a maximum/minimum. This
country setting may only be selected if the plant or the inverter is operated with external three-phase
decoupling protection, which will automatically disconnect the inverter from the electricity grid if
non-permissible voltage and frequency values occur. Device protection is still guaranteed.
Danger to life due to electric shock if external decoupling protection is missing
With the country setting "MVtgDirective", the inverter may only be operated with an external
three-phase decoupling protection device which complies with the country-specific requirements.
Without such external decoupling protection, the inverter will not disconnect from the electricity grid
when the standard requirement is exceeded.
• Install external three-phase decoupling protection.
Installation Manual
STP8-17TL-IA-en-31
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