Frequently Asked Questions

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While smart EV charging remains in its nascency, we know that you have some wrinkles in mind to be ironed out. Here are some information which may be helpful.

Every construction must have some extent of underutilized power, that is, the Shadow Power. For stable supply of power, the power capacity ceiling of your building must be higher than the peak loading. Otherwise, you may from time to time suffer from power interruption. Moreover, electrical renovation and enhancement works comes along with more household electrified usage. Don’t worry, you can surely spot out a pool of Shadow Power.

EV charging can impose an extra power demand on your power system. Every charger you plan to install comes with the need for extra electrical power. Power upgrade includes replacing or adding new meters, main switches, MCB boards, larger size of cables or even the generator, transformer, and main switchboard as well. You also have to spare enough spaces for the new facilities.

Absolutely not. Our PSN-EVC system will supervise and report the measurement of the circuit used. With real time monitor in place and the setting of a power ceiling, the normal usage of the circuit will not be affected.

A charging rate at 7kW is almost twice the average daily EV consumption in Hong Kong (3.95 kW). In reality, most of the EVs will not run out of power before getting plugged. Moreover, this charging rates only serve residential or office car park where an EV always parked for long hours.

Yes, more EVs means less energy resource allocated. However, cars in and out, and that is exactly why you need a Super Load Management System like the PSN-EVC system. This system is designed to do the math for the most optimized charging speed for users. What’s more important, according to statistics the utilization of fast chargers (32A) is only around 10-20%. The charger is fast but it sheds off most of the potential capacity of a grid. This is horrible to our global green goal. If we get down to the nitty-gritty, after all, we would admit that climate benefit is above all other benefits and interests, right?

No. In fact, no matter charger with or without a LMS, it won’t let user to determine the charge rate. Most importantly, it’s a matter of safety. It is the kilowatt capacity of a charger that determines the speed at which the battery takes electricity in. Every EV has a Battery Management System (BMS) built inside the battery. BMS tells the charger the voltage and current the vehicle can accept and the product of which determines the charge rate. Moreover, it is a matter of public ethnics. Electricity is a limited resource. It is the LMS which manages the limited electricity for every EV in a fair and most efficient way that matters.

In fact, you don’t have to charge up your EV in 1 to 2 hours. Or if you must, you may find a commercial SuperCharge Station instead. When there are more and more public chargers you may find along the route of your commute, charge-on-the-go is becoming an usual practice. You may charge part of your battery capacity and let the rest charged elsewhere. Like you charge your cell phone outside, you don’t always expect to charge 100% in few minutes. Moreover, quick charge is not good to battery health.

No, you don’t have to. It is your choice to install how many charging points at a time. In practice, you are free to install any charging points with our PSN-EVC  System because the system is designed to be scalable, very easy to expand charging points in the future. 

Not necessarily, it depends on the power capacity of your car park. For example, if your car park is under construction and prepare to install additional power capacity for EV charging purpose, you may choose not to use Shadow Power but the new circuits. That’s fine. Stay with our PSN-EVC system as a SLMS to get the best optimized smart management of your charging facilities.

Yes. It’s just your choice. If you prefer another power source for charging, just re-route and tweak the PSN-EVC system a bit and done. You may continue to enjoy the benefits from a Super Load Management System with PSN-EVC.