We installed three hops of PTP850E for a customer back in late 2020. They use a PoE injector with Cat5E running to the management port to power the radios and a 10G SFP for their payload.
At least once a year since we installed the equipment, they have a PoE injector go bad. Sounds like it is the same one each time or at least at the same site.
The injector is there just to power the radio and is not connected to the network. It is plugged into an APC UPS (The same APC UPS that their network switch is connected to and it has not had any issues).
Just curious if anyone else has seen this happen and, if so, was there a fix ? I think it is power related, but, it is strange that it is plugged into a UPS that has other unaffected equipment connected to it as well.
We installed in new system in 2024 with a total of seven PTP850 units. Starting in September last year, we have now had three POE injectors fail on three separate radios. One in September, one in December and then one this month. It is beginning to look like there is a limited lifespan on these injectors. I have noticed that they do run hot, despite good quality cable and cable runs of about 150 feet. I am thinking they might be under-designed for long term use and considering switching to direct power. Not much fun having to snowcat up to a site just tor replace a power brick.
I assume you’re talking about the new style black PoE’s? Yeah, they fail a lot… we’ve had almost every one fail in about a year after deployment. We’ve gone back to the old school PIDU’s (WB3025H or E100109C), which are built like tanks, but I think that they’re EOL… so you got to source them used or NOS. We’ve never had a PIDU fail.