rb 333 poe needed ?

hello. i have infinite problems with a rb333 with 3 r52h cards . i am trying to supply it with poe over a distance 90m with cat6 awg-24 cable but without success, i have tryed with a power sypply 24v 1.5 ah but the rb333,it start up well and after last beep i see connect-disconnect to my network card (my laptop) .I cant reach the router with ping. i test cable with tester and its ok also i have made a test with a rb433 without cards and it stay connected without problems for hours soi think is current drop the problem. please if anyone has similar solution please share it. this is second cable that i change after cat5e and still dont work. its good quality cat6 awg-24 conductor 0.5+ mm so its ok. for the moment i am waiting a power supply 24v 350w that i will use for 5 antennas together but i dont know if it will be the final solution for this rb333.

thanks all

Have you tried the unit with a regular power supply, or a shorter cat5 (or cat6) cable? 90 meters is a long run for POE.