References to standards for electric vehicle recharging dispensers

References to standards for electric vehicle recharging dispensers

The body of standards regarding electric vehicles and their recharging infrastructure is fairly complex and includes:
• Standards on connectors
• Standards on communication systems between the vehicle and infrastructure and between infrastructure and electric power grid
• Standards on the electric safety of recharging systems.

Recharging mode standards (IEC 61851-1)

In regard to Standard IEC 61851-1, GIGIEFFE recharging dispensers utilize Recharging Mode 3 defined as follows:

Mode 3: Recharging in domestic or public environment: slow (6-8 hr) or averagely rapid (30 min - 1 hr)

This is the obligatory mode for public environments: recharging must be made by a special power supply system provided with specific connectors.

Standards on vehicle/dispenser communication systems (IEC 61851-1)
PWM circuit:

In order to guarantee safety during recharging, the stations must exchange the correct signals with the vehicle. This device is known as the PWM (Pulse Width Modulation) and is obligatory for Recharging Mode 3.
For vehicles without PWM but with a resistor instead, the PWM device operates in a simplified mode and is limited to 16A.

Resistor Coding:

In Recharging Mode 3, it is important for the station to identify the right section of the cable connected in order to deliver only the current that can be supported by the cable, and this function is known as “Resistor Coding".
The current set by the PWM cannot differ from the current determined by Resistor Coding. Whenever the power absorption is higher, the station must stop recharging.

Standards regarding connectors
Connectors for Recharging MODE 3 (IEC 62196-1 and 2)

Sockets Type 2 and Type 3 (Type 3A and Type 3C) can be used for the recharging of electric vehicles.
The main difference between Connector Type 2 and Type 3 is the presence of safety devices against the accidental contact with parts under voltage (IPXXD) on all system components: socket and plug.

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