2. Product description

Basic Functionalities

Etrel INCH DUO is a smart charging station that can predict EV charging habits and help charge the car by the time it is needed, at the lowest possible cost.

Charging station comes with the LCD screen that guides through the charging process and provides charging information. Charging station comes with several connectivity options (including Wi-Fi, LTE, and ethernet) and open protocol support and can be seamlessly integrated in smart home.

LTE antenna

Socket 1

Socket 2

Door handle

LCD Display

Figure 3: Etrel INCH DUO

Base Specifications

Input: 2x230/400V~; 3W+N+PE; 50/60 Hz; 32 Amax
Output: 2x230/400V~; 3W+N+PE; 50/60 Hz; 32 Amax
Maximum charging power: two charging spots with 7,36 kW (single-phase) or 22,08 kW (three-phase).
Device power consumption:

From 5 W, depending on the actual configuration.

Specification of frequency bands and transmitting power (it is possible that not all modules are part of an actual device).

LTE module

Frequency bands:

LTE-FDD: B1 (2100 MHz), B3 (1800 MHz), B5 (850 MHz), B7 (2600 MHz), B8 (900 MHz), B20 (800 MHz)

LTE-TDD: B38 (2600 MHz), B40 (2300 MHz), B41 (2500 MHz)

WCDMA: B1 (2100 MHz), B5 (850 MHz), B8 (900 MHz)

GSM/EDGE: B3 (1800 MHz), B8 (900 MHz)

Transmitting power:

33dBm±2dB for GSM

24dBm+1/-3dB for WCDMA

23dBm±2dB for LTE-FDD

23dBm±2dB for LTE-TDD

LTE Router

Frequency bands:

4G (LTE-FDD): B1 (2100 MHz), B3 (1800 MHz), B5 (850 MHz), B7 (2600 MHz), B8 (900 MHz), B20 (800 MHz)

4G (LTE-TDD): B38 (2600 MHz), B40 (2300 MHz), B41 (2500 MHz)

3G: B1 (2100 MHz), B5 (850 MHz), B8 (900 MHz)

2G: B3 (1800 MHz), B8 (900 MHz)

Transmitting power:

21.9 dB

RFID module

Frequency band:

13.56 MHz (HF)

Transmitting power:

up to 8 dBm

Dimensions

Figure 4: Dimensions of INCH DUO charging station

Figure 5: Dimensions of INCH DUO power supply compartment

Optional and Extra Equipment

The table below shows the optional and extra equipment that can be added to the charging station:

Optional / Extra equipment	Use/Description
GPRS router with network switch	GPRS router can be used for communication for several chargers on the same location (required for control centre connection when local connection via ethernet is not possible). Network switch can be used to connect several stations on the same location with one router.
Safety arches (Protection railing)	Protects the station from vehicle collisions.
Underground anchoring structure	For safe installation of charging station and safety arches.
Different graphical user interface languages	Based on user identification, the station can automatically adjust the language of the user interface.
Visual customisation of the station	Custom labels with client’s design, logotypes, or promotions.
Connection of two sets of supply wires	Special connection terminals can be used to connect several stations in a row.
Etrel Load Guard	Enables management of charging current based on settings in the control centre for management of charging infrastructure.
Etrel Ocean	Control centre for management of charging infrastructure.

Figure 6: Underground anchoring element

Etrel Load Guard

Etrel Load guard is a separate device that is installed in the building’s electric cabinet. It measures the electric current in the building’s installation and sends real-time measurements to the charging station.

Load Guard allows charging with maximum current without overloading the fuses. The main use is in cases where there are other consumers or production of energy at the location (e.g., photovoltaics). It operates with individual charging station or with cluster of charging stations.

Power management of master charging station decides, based on information provided by Load Guard, what target current to set on its connector and other stations of the cluster. If necessary, it will increase or decrease the charging power or even stop it completely to prevent the fuses from switching off due to overcharging.

Figure 7: Load Guard

Etrel Ocean

Etrel Ocean is a complete software solution for scalable electric vehicle charging management that supports complete overview and control of charging stations while covering numerous use cases.

Usually, it is not needed for home use, its advantages are in the field of management of (real and virtual) clusters of charging stations. It is adaptable and configurable to different business cases.

Figure 8: Etrel Ocean

Identify Product Variant

Etrel INCH DUO has multiple variants that differ based on socket type and connectivity option. To identify charging station, there are two possibilities. Either checking the manufacturer sticker or on the Web interface in Diagnostics menu.

Model number is located on all stickers. Identification of charging station is sometimes needed by the support, so they can identify potential issue.

User will get all the needed information on the sticker located inside of the charging station. Information about charging station model, serial number, software version and version of cc hardware, cc driver and cc firmware can also be obtained, on the web interface of charging station.

Charging station or its packaging has three stickers, presented on the following figure.

Figure 9: Three different stickers of the charging station

EV Solutions Knowledge Centre

INCH DUO Product basic description

Table of Contents

2. Product description

Basic Functionalities

Base Specifications

Dimensions

Optional and Extra Equipment

Etrel Load Guard

Etrel Ocean

Identify Product Variant

Circuit Diagram