There are a few potential issues with the grounding scheme you have described: Ground loop currents

By grounding the primary and secondary sides of the transformer to different ground rods, you are creating a potential for ground loop currents to flow. This can cause problems such as noise, interference, and even equipment damage.

Unequal ground potential rise (GPR)

If the ground rods are not properly sized and spaced, they may not be able to provide adequate grounding for both the primary and secondary sides of the transformer. This can lead to unequal GPR, which can also cause problems such as noise, interference, and equipment damage.*

Safety hazard: If the ground rods are not properly installed and maintained, they may not be able to provide adequate protection against electrical shock.To avoid these potential problems, it is recommended that you ground the primary and secondary sides of the transformer to the same ground rod. This will help to ensure that there are no ground loop currents, that the GPR is equal on both sides of the transformer, and that the system is safe from electrical shock.If you are not able to ground the primary and secondary sides of the transformer to the same ground rod, you should take steps to minimize the potential for problems. For example, you can use a ground loop isolator to prevent ground loop currents from flowing, and you can install surge protectors to protect the equipment from GPR.I hope this information is helpful. Please let me know if you have any other questions. Flag for review