Paper on Input from Globalspec

Abstract

V2G is possible if car batteries can be charged by RE, e.g., solar.

EV socket of 50A rating and fast charging to UL NEC approval is accepted. Legrande can promote to EV car manufacturers to install in battery charging inlets and may design an AC-to-DC rectifier with a battery in the car to adapt to charging DC batteries in the car. Promote to EV charger manufacturers to install such socket outlets and manufacture the right EV charging cord with/without an integral rectifier to suit other car battery designs.

Reel before excavation needs an underground utilities survey check; seek Dr. King Wong, famous in HK for this underground survey of utilities.

Choose Si, Sic, or GaN for the transistor depending on their reliability and the current ratings and heat dissipation. Data centers use many UPS, batteries, changeovers, and thyristors transistors of high current ratings. Can sell good to data center installation

A power cord on the construction site should be provided with an RCD or ELCB for earth leakage protection, as the site has rain and is wet. This earth leakage protection can be provided on the power board or portable power distribution panel, which gets power input from the diesel generator. Prevent electrocution of people on-site. Diesel generator casing and internal circuitry must have earth wires and an earthing connection to an electrode/mesh buried inside the ground to provide this earth fault protection and link up with a power distribution panel having 3-phase and single-phase outlets. I have been teaching in Tsing Yi Ive for 5 years as a PT in electrical installation. The diesel generator should sit on an I-beam frame on the ground, with no direct contact with wet ground. Contact me if needed. Take all risks of short circuit due to water/rain. Weatherproof diesel generator, power distribution panel, socket outlets, and power boards all weatherproofed with a high IP rating suitable for the site environment. Check the description to choose the right IP rating.