Q&A Forum
Guys,
I'm new to the forum. I tried searching a couple of these questions and didn't have any luck. I'm building a new hub dyno using the YourDyno kit. The majority of my question relate to how to wire the electrical components. If someone has an example of how they wired their hub dyno using the YourDyno Eddy Brake kit that would be appreciated.
I plan to place the Power Supply and Your Dyno Ultimate data logger inside an electrical enclosure. Here are my questions:
- Has anyone built an electrical panel that has and electrical schematic they can share?
- YourDyno manual mentions that the incoming power supply should include "an earth leakage circuit breaker". What have others used for this? I'm leaning towards a ~30 amp GFCI circuit breaker, but I'm struggling to find one I can DIN rail mount.
- I'm planning on mounting the enclosure and data logger to the fabricated structure of the hub dyno. I'm slightly concerned about electric noise (EMF). Are there any recommendations for how to mount or shield?
- What is the best practice for grounding to the vehicle on the dyno? Do I need a dedicated earth ground rod or can I get by using the electrical ground path?
Thanks for your help!
Ty Schurr
Hi,
Good questions.
You can use one circuit breaker per power supply. The circuit breaker should be rated for at least 20 amps. All modern electrical installations have a ground fault circuit interrupter (GFCI) or earth leakage breaker, either a common one for the building or one built into each circuit breaker (most common). Its function is to trip if there is current flowing from a hot phase to ground, which could be through a human body... Anyway, you should have an electrician install this if needed.
There is no problem placing the power supply on the hub itself, they are very study and tolerate vibrations etc. Many people do that. It is practical to have an industrial power connector on the hub chassis and extension cables to the mains outlets. I would not place the instrument unit in a hub, rather in a cabinet on the wall or stand. Best is to place it in a grounded metal enclosure.
The hubs shall be grounded. You can feed ground together with mains power to the hubs and then to the power supply, the chassis of the hub and brake. The car will normally be connected to ground through the hubs, but you can have a jumper cable or similar from a hub to the car if needed.The ground is only there so that the GFCI will trip if any issues and to ensure no static electricity is built up in the hubs/car. No current flows in the ground wires normally. You can use the mains ground or a dedicated ground rod. The Ultimate v2 has electrical isolation on the USB, so the PC and the dyno could be connected to different ground connections (there may be a slight voltage difference) but normally the whole dyno system including the PC shall be connected to the same ground connection.
Cheers,