Solution For Explosive Proof Camera 500 Meters Away?

I have an CCTV Installation in Oil Field. I want an Explosive proof Camera (Both PTZ and Fixed-d/n). Camera should be working with Milestone Corporate.We cannot install psu,encoder or other module near the camera. Everything should be installed 500 Metre from the camera.So that i have to transmit 24 volt Ac 500 Metre away and also data also transmitted 500 metre away. It should be IP if better PoE or with OFC module in built Camera. Also, I need a solution to transmit 24 volt AC over 500 metres.

Please suggest me best solution asap.

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