Electric Vehicle Charging Station and Vehicle Receiving Interlock



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Wall mounted, programmable from 6 - 30A 230V

One of the most common complaints about an electric vehicle is the recharge time. This is not helped by the fact the most mainstream electric cars (e.g. Nissan Leaf) comes standard with a restricted 230V charge lead to recharge the vehicle at home.  The charge lead provided with vehicles is designed to be portable, it must be made to be safe to be used in a conventional 13A household plug and socket arrangement (one would find at home). In order to achieve this the charge lead has a restrictor built into the cable which sends a signal to the vehicle charger to work at no more than 10A. This restrictor is there so as not to overload the 13A plug and socket. The end result of this safety restriction means that the charger will only return about 10 miles recharge per hour, with a full battery recharge taking about 10-11 hours. However, in the case of the Nissan the actual inbuilt vehicle charger can work at about 16A. This is a massive 60% higher than you can access using the standard charging lead provided by Nissan.  Access to the full charge capability allows the car to recharge at about 16 miles recharge per hr and recharge an empty battery in approximately 6.25 hours - a massive 37% improvement.  In order to access this untapped potential one must obtain a larger power supply than the conventional 13A, most houses / offices have a 32A ring main which can usually be easily tapped into, however, only 16A of which would be used (for the Nissan Leaf).  Simply connect the Sterling Electric Vehicle charge station to the large power supply cable then the full charing potential can be achieved. This allows longer commuting distances to work (just have a station at work) or more effective daytime opportunity charging at home. I.e. If you are a bit short on distance, a 1 hour plug in over lunch time will give you an extra 16 miles driving range.  Technical flexibility: This unit can be used on any power available from 6-30A AC 230V. The internal switch settings allows you to preset what actual power you have
available from you're AC power source. This safely protects your power source cabling. Most power settings will be about 10-30A (as this is the standard current available within easy access). Also, most actual vehicle chargers are less than 16A (to date, but this will increase over the years). However, the unit has future proof upgrade ability built in and can be simply adjusted up to 30A if required (N.B the power setting refers to the power supply available and not the ability of the car’s charger, the power supply can be well in excess of the vehicle’s internal charger and this will not damage the vehicle charger).
How does this work? The unit has pre-programmed dip switch setting linked to specific currents, this sends a signal down the 2 small connectors in the electric vehicle plug. This signal (same protocol is on all electric vehicles) informs the vehicle charger what the power limitations of the system are. The vehicle adjusts its power to suit the setting requested from the control box.
Vehicle Interaction (timer): The unit comes as a wall mounted weather proof, locked steel box with a large information panel giving operation and safety instructions. The
Illuminated socket holder allows easy use at night, a remote operation circuit allows an external timer or pay box to be attached to this unit if this is a requirement as this unit is fully compatible with the vehicle’s system then the vehicle onboard timer can be used to ensure your vehicle is charged at the best available electric tariff.
There are 2 main safety systems on this type of unit:
1) The high voltage cannot be activated unless there is a firm connection between the plug and the car. This connection is confirmed by a protocol handshake acknowledged by the vehicle’s onboard system. Only then will the AC power be engaged. This then immobilizes the vehicle.
2) The box is fitted with a 230V 30 mA RCD combined with a 40A trip which, in the event of an earth leak (due to cables becoming damaged or water in the plugs etc), will automatically trip the system or, in the event of short circuit, will trip the unit.
Security: The unit comes as a wall mounted weather proof, locked steel box with a large information panel giving operation and safety instructions. The
Illuminated socket holder allows easy use at night, a remote operation circuit allows an external timer or pay box to be attached to this unit if this is a requirement.
Installation: The Sturdy steel box is more adaptable to a professional installer’s needs. All that is required is a simple power feed from the office / house.

Specification for EV plug and socket
Voltage 230V (nominal)
Withstand test voltage 2000V
Current 16A and 30A models
Mating cycles (over 10,000)
Mated retention force to unlock 40-80N
to lock 160N
Operating temperature -40 to 75 deg C

Electric vehicle charge station (wall mounted)
Steel wall mounted box
30 amp control unit ability
16 or 32A cable and socket
5 led information panel
Earth fault protection
overload protection
SAE J1772 protocol
Blue back light socket holder
Remote on / off ability
5 meters 16A cable
9 current limiting selector switch

Features

inc SAE J1772 handshake establishing protocol module Standard 5 metres cable (special order for longer cable)
Residual Current Breaker (RCD) Overload Protection
Blue LED illuminated socket holder 9 user selectable current limits from 6-30A
Sturdy wall mounted secure steel box Clear 5 sequence status LED information Panel
Fault LED information and safety instruction label External timer / meter box control attachment
Extraction control (if required) Designed and made in England
Bespoke product layout available

 

Specification for EV plug and socket

Voltage 230V (nominal)

Withstand test voltage 2000V

Current 16A and 30A models

Mating cycles (over 10,000)

Mated retention force to unlock 40-80N to lock 160N

Operating temperature -40 to 75 deg C

 

Amp Limiter settings:

0 = 6A

1 = 10A

2 = 12A

3 = 13A

4 = 15A

5 = 16A

6 = 20A

7 = 25A

8 = 30A

9 = RESERVED

 

 Description Part Number
Electric vehicle wall mounted charge station, metal box with earth/overload plus SAE protocol plus 5 m cable 16 amp Type 1 plug EVW16A5M
Electric vehicle wall mounted charge station, metal box with earth/overload plus SAE protocol plus 5 m cable 32 amp Type 1 plug EVW32A5M
Electric vehicle wall mounted charge station, metal box with earth/overload plus SAE protocol plus 5 m cable 16 amp Type 2 plug EVW16A5M2
Electric vehicle wall mounted charge station, metal box with earth/overload plus SAE protocol plus 5 m cable 32 amp Type 2 plug EVW32A5M2
SAE J1772 type 1 plug plus 5 m 16 amp cable EVP16AC
SAE J1772 type 1 plug plus 5 m 32 amp cable EVP32AC
SAE J1772 type 1 socket EVP16A
SAE J1772 type 1 socket EVP32A
EVPSL Socket support holder with Leds EVPSL

 

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