Can my Dahua DH-SD59225U-HN be powered by 48v DC POE?

[Chas]

I have important question: my "DH-SD59225U-HNI" camera is a POE and the NVR "NVR4104-P-4KS2" is also a POE, I now wish to operate both Camera and NVR on 48v Dc "POE" power, but I am worried.

My concern is my Dahua camera DH-SD59225U-HNI is a 24v AC (External power supply) and the NVR Recorder is 48v DC, due to the large specification and polarity differences, can I use the NVR POE 48v Dc system "Camera and NVR" all powered by the POE from the NVR 48v DC without damage?

If I can use the POE (Power over Ethernet) and removing the external 24v AC power to supply the camera, can I have an explanation why this will not damage the camera by feeding 48v DC into the camera that is rated at only 24v AC.
Can anybody help me please as I am confused?

 

[fenderman]

I have important question: my "DH-SD59225U-HNI" camera is a POE and the NVR "NVR4104-P-4KS2" is also a POE, I now wish to operate both Camera and NVR on 48v Dc "POE" power, but I am worried.

My concern is my Dahua camera DH-SD59225U-HNI is a 24v AC (External power supply) and the NVR Recorder is 48v DC, due to the large specification and polarity differences, can I use the NVR POE 48v Dc system "Camera and NVR" all powered by the POE from the NVR 48v DC without damage?

If I can use the POE (Power over Ethernet) and removing the external 24v AC power to supply the camera, can I have an explanation why this will not damage the camera by feeding 48v DC into the camera that is rated at only 24v AC.
Can anybody help me please as I am confused?

The camera operates on POE+, the nvr can supply POE+ it will work fine. You are confusing POE with the alternative power option in the pigtail.
You need to google POE 802.3.
This has been discussing in many threads.

 

[Chas]

Yes I have been confused, you mention Pigtail is that the POE injector, I am sorry to be so dumb, I have Googled the Poe 802.3 but it did not mention the actual voltage. Thank you so much for you guidance.

 

[looney2ns]

Power over Ethernet - Wikipedia