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Selecting the Altronix power supply for 16 sony cams
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| jsingh |
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Posts: 7
Joined: 12 Oct 2008
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Posted: Sun Dec 21, 2008 9:13 pm
Post subject: Selecting the Altronix power supply for 16 sony cams
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I need help in selecting Central Power supply for following 16 cameras:
Sony SSC CD45
Power: 12vdc or 24VAC
The manual does not say any thing more about power. I don't know how many mA does one camera take. It is 16 camera system and the distance to the farthest camera from the power supply will be approx 100'
All cameras are indoor with no IR.
When I browse through various Altronix power supplies, it is very difficult for me to make a decision.
I'll greatly appreciate any help in selecting suitable power supply.
Thanks
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| kensplace |
Moderator
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Posts: 1036
Joined: 30 May 2006
Location: UK
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Posted: Mon Dec 22, 2008 12:33 am
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Im not familiar with that model, but a google search for its name brings up a spec sheet that says the camera uses 4 watts max.
16 cameras at 4 watts each would be 64 watts.
A 24v power supply will have less issues with voltage drop over longer distance than a 12v one.
Its best to try to use a power supply that is capable of supplying more than you need, its always handy to have a bit spare capacity power wise in case you upgrade a camera. Also the power supply will not be running at its limits all the time if you are not using it fully.
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| survtech |
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Posts: 895
Joined: 21 Mar 2007
Location: San Diego County
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Posted: Mon Dec 22, 2008 3:45 am
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If all cameras draw 4 watts, one of the variations of the basic ALTV2416 should do. The other versions are just slightly different in configuration.
Example:
ALTV2416 - 16 Fused Outputs CCTV Power Supply. 24VAC @ 8A or 28VAC @ 7A
ALTV2416CB - 16 PTC Outputs CCTV Power Supply. 24VAC @ 8A or 28VAC @ 7A
First determine your individual camera and total power requirements, then select the type of fusing you want (fuses or PTC's), then decide if you want 2-wire or 3-wire power cord and whether you want UL rated outputs or not. If you have trouble with ground loops, use one with isolated outputs.
If you have PTZ's or outdoor cameras with heater/blowers, use the ALTV2416300 or the ALTV2416600. The difference is the power capabilities - the 2416 is approximately 1/2 amp per output (200VA total). The 2416300 is approximately 3/4 amp per output (300VA total) and the 2416600 is 1.5 amp per output (600VA total).
Since PTZ's typically draw 20VA and heater/blowers typically draw 30-60VA, the 300 and 600 can drive a number of higher power cameras mixed in with lower power ones, but not 16 PTZ's with heater/blowers, which can draw up to 80VA each. Then you need either one of the isolated 28A units or a number of 4-8 camera high power supplies.
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| jeromephone |
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Posts: 362
Joined: 30 Apr 2005
Location: ST Joe , MI
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Posted: Thu Dec 25, 2008 8:31 am
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the altronics web site give you all the output data etc we have used the standard fuse protected supplies in many locations. I would reccommend the isolated 24 volt models. If you have a ground loop or problem you only have it on one camera. we are also running a seperate ground for all our power supplies.
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