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AC Power over tether


(Basil Alias) #1

HI,
We are planning to power ROV using an External power supply using an Ac to DC converter inside the ROV instead of a battery. So, is it possible to supply AC voltage(230v @ 6Amps) through twisted pairs by combining 3 pairs(2 Amps on each pair) parallelly??
@adam


(Bo Koppel) #2

I do similar solution, 2 amps 240V AC on two pairs, one pair phase, one pair neutral in 100 m tether.
Using 25A converter onboard and current limiting in ROV parameters.

NOTE!! really dangerous regarding electric safety even with GFCI breaker !!


(Basil Alias) #3

Thankyou Koppel


(Michael) #4

What power supply are you thinking of using? I am looking into this also.
Thanks


(Bo Koppel) #5

The budget 25 Amp has to be cut a bit in the corners (!!!), but works very good:
https://www.aliexpress.com/item/2016-New-SANPU-SMPS-12V-LED-Power-Supply-Unit-300W-25A-AC-to-DC-Lighting-Transformer/32719958441.html?spm=a2g0s.9042311.0.0.28664c4dK4huDn

If You not like to cut a 240 V Powersupply (You really shouldnt) there is 16 Amp that fits right off:
https://www.aliexpress.com/store/product/2016-New-SANPU-SMPS-12V-LED-Power-Supply-Unit-200W-16A-AC-to-DC-Lighting-Transformer/1470529_32716049336.html?spm=2114.12010612.8148356.44.53b360c4H2iOQv