Energy GPV3.6KTL, Руководство пользователя

Страница: 24 / 65

18
point in a building. In installations involving long outdoor cable routing, additional
measures to reduce overvoltage category IV to overvoltage category III are required.
AC circuit breaker
In PV systems with multiple inverters, protect each inverter with a separate circuit
breaker. This will prevent residual voltage being present at the corresponding cable
after disconnection.
No consumer load should be applied between AC circuit breaker and the inverter.
The selection of the AC circuit breaker rating depends on the wiring design (wire
cross-section area), cable type, wiring method, ambient temperature, inverter current
rating, etc. Derating of the AC circuit breaker rating may be necessary due to
self-heating or if exposed to heat.
The maximum output current and the maximum output overcurrent protection of the
inverters can be found in section 9 "Technical data".
Grounding conductor monitoring
The inverter is equipped with a grounding conductor monitoring device. This
grounding conductor monitoring device detects when there is no grounding conductor
connected and disconnects the inverter from the utility grid if this is the case.
Depending on the installation site and grid configuration, it may be advisable to
deactivate the grounding conductor monitoring. This is necessary, for example, in an
IT system if there is no neutral conductor present and you intend to install the inverter
between two line conductors. If you are uncertain about this, contact your grid
operator or Gsmart.