Requirements For Transformers And Insulation Monitor; Grid Connection Transformer - Ingeteam Ingecon Sun 250 TL Installation Manual

Installation manual
Once it has been corrected selected, follow these steps:
1. Mark the fixing points for the plates on the floor.
2. Drill the floor with a recommended drill for the fixture supplied with the fastening plate.
3. Anchor the sheet metal fixing points to the floor.
4. Screw the sheet metal fixing points to the unit.
5. Check that the unit is properly secured.

5.3. Requirements for transformers and insulation monitor

5.3.1. Grid connection transformer

This section lists the technical characteristics of the grid connection transformer which converts the medium or high
supply voltage to the operating voltage of the Ingecon® Sun Power Max unit.
1. The transformer's power must be greater than the sum of the power ratings of the connected inverters. Take
into account the environmental conditions of the site.
2. Ingecon® Sun Power Max inverters connected to the inverter's low voltage winding must be synchronised.
3. MPPTs connected by Ingecon® Sun Power Max to the same transformer must have the same voltage
settings.
4. The Ucc short circuit voltage of the transformer must be equal or less than 6%.
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
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