When my last dog was young, she could easily scale a 6’ chain link fence. To keep her from bothering the neighbourhood, I put up an electric inside the chain link. It was very effective. We also had a husky wolf cross, she would get angry with the much larger dog and lure him over, and then push him into the fence.
I hope you manage to preserve hives, honey and bees with that. Is it specific voltage for bears or just a generic fencer that you running?