Dell Equallogic have a different approach on multipathing. It have only one "global IP" to connect to, and it does multipathing on the SAN level, not on the ESX level. I really recommend you to read the storage documentation or even call Dell to check what are the best practices with this storage, as you shloud do if this will be a productive environment.
BTW, ESX server have a limitation of 32 paths per LUN, and 1024 for the entire ESXi system. IF your 3 vmkernels are reaching 3 different storage controllers, you should have 3 paths, but as I said, Equallogic does not work this way.
Hope this helps.