Ingeteam INGECON SUN 1000TL U B360, Инструкция по установке и эксплуатации

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ABK2027IQE01_A - Installation and Operation Manual
2. If connecting the equipment to the transformer's same low voltage winding, these must be synchronized. These
equipment have all the necessary elements to synchronize up to four inverters.
Low Voltage / Medium
Voltage
INFO
See section “13. Connection of the DCAC connections module” to proceed with connection.
3. PV fields connected by these inverters to the same transformer must have the same voltage settings.
4. The short circuit voltage of a transformer should not be greater than 8% between the primary winding and
secondary winding(s).
5. We recommend inserting a grounded metal screen between the high voltage winding and low voltage
winding.
6. The low voltage winding must withstand pulsating voltage components with dU/dt of 500 V/uS voltage.
Because of inverter operation, the voltage between a phase and ground can reach 3/2 of the open circuit
voltage of the PV array.
7. We recommend using the Dy11 connection.
8. The connection to the medium voltage grid will be the nominal connection point.
9. We advise using transformers equipped with five-point voltage regulators, with the possibility of selecting
the following options:
5% 2.5% 0% -2.5% -5%
10. The impedance of the inverter's transformer (Zmv) must be calculated according to the breaking capacity
of the inverter's thermomagnetic circuit breaker. Depending on the AC voltage of the inverter, its
thermomagnetic circuit breaker supports the following rated short circuit current (Ik):
AC voltage Ik
Up to 450 Vac 85 kA
460 ~ 690 Vac 65 kA
The following table outlines the transformer's short circuit voltage according to the inverter's AC voltage
and the number of inverters connected to the same transformer. The transformer's short circuit voltage
(Ucc) must be equal to or greater than the ones shown in the following table:
AC voltage
Minimum Ucc depending on the number of inverters connected to the same transformer
1 inverter 2 inverters 3 inverters 4 inverters
Up to 450 Vac 1.9% 3.8% 5.6% 7.5%
460 ~ 690 Vac 2.3% 4.6% 6.9% 9.2%
No electronic equipment may be connected to the power grid. All auxiliary loads must be isolated from the power
grid via a galvanically isolated transformer, as shown in the section
“6.8.2. Auxiliary transformer” .
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Preparation for installing the unit Ingeteam