Cabling Length; External Disconnection Device; Medium Voltage Transformer - Ingeteam INGEREV RAPID 50 Trio Manuel D'installation Et Usage

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5.7. Cabling length

The charger measures the voltage in its connection terminals. For this reason, the installer must use an AC cable
with a sufficiently low impedance so that increasing the voltage in the cable (between the distribution transformers
and the unit) does not cause the unit to be disconnected due to low voltage.

5.8. External disconnection device

The AC supply must be shut off for equipment inspection work. To do this, the installer must fit an external
disconnection device.

5.9. Medium voltage transformer

In installations where the use of a medium voltage transformer dedicated to the chargers is required, this
transformer must meet the following requirements:
• The transformer must have a rated power equal to or greater than the sum of the power of the chargers
installed downstream.
• The transformer must have a star configuration in the low-voltage side and a delta configuration in the
high-voltage side.
• In the low-voltage side, the neutral terminal must be accessible and connected to ground.
• It is recommended to use transformers with Ucc <6%.
• It is recommended to use transformers equipped with five-point voltage regulators (0, ±2.5, ±5%).
• The transformer low-voltage side must withstand an earth fault current at three times the grid frequency
in the range of 10 Arms/MVA.
• The dimensioning of the transformer must take into account:
• The voltage and frequency characteristics (and their tolerances) of the connection point.
• The regulations of the country where it is to be installed.
• The environmental factors of the installation location (temperature, humidity, altitude, etc.).
• The transformer is an essential part of the installation; its features must be taken into account when
designing the necessary downstream protections.
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Preparation for installing the unit
ABT2012IQM01_B- Installation and Operation Manual