I have the below power supply with backup battery, but I'm confused about item 7 in the text.

My aim is to connect 9 cameras, and provide 12V2A to each of them. Is this even possible, and how would I have to connect them to achieve that?

Not the answer you are looking for, but I would be interested in why you didn't just buy a decent size UPS.

The CCTV NVR runs the cameras over PoE for each camera. The UPS is your back up power and also would have an AVR (Active Voltage Regulator) to smooth out any surges / brown outs.

The bigger the UPS, the longer the run time during a power outage.

The unit in your photo only has one battery. You can buy a UPS with more VA / Watts then that.

Also handy for powering your modem / router for internet, and charging your phone.

Edited July 16Jul 16 by KhunHeineken

You connect the power box to your 220–240 V mains. The box converts it to 12 V DC and distributes power to each camera. Depending on how much current your cameras draw, you connect each one to an output protected by the appropriate fuse.

I’m looking at a setup myself and think I’ll go for the full package, including installation. It also makes servicing much easier if we’re not around.

19 minutes ago, Hummin said:

You connect the power box to your 220–240 V mains. The box converts it to 12 V DC and distributes power to each camera. Depending on how much current your cameras draw, you connect each one to an output protected by the appropriate fuse.

I’m looking at a setup myself and think I’ll go for the full package, including installation. It also makes servicing much easier if we’re not around.

No it is not as simple as that, because according to the text in item 7, it can supply 60V/2A or 60V/1.1A

33 minutes ago, KhunHeineken said:

Not the answer you are looking for, but I would be interested in why you didn't just buy a decent size UPS.

The CCTV NVR runs the cameras over PoE for each camera. The UPS is your back up power and also would have an AVR (Active Voltage Regulator) to smooth out any surges / brown outs.

The bigger the UPS, the longer the run time during a power outage.

The unit in your photo only has one battery. You can buy a UPS with more VA / Watts then that.

Also handy for powering your modem / router for internet, and charging your phone.

Because first of all I don't have a PPoE system, and secondly if using a UPS I would have to use 9 individual power adapters, plugged into an extension cord with 9 connections

6 minutes ago, CallumWK said:

No it is not as simple as that, because according to the text in item 7, it can supply 60V/2A or 60V/1.1A

Did you ask for an explanation in google, ai or youtube ?

. “60 V/2 A” means the fuse is rated for up to 60 V and approximately 2 A; it does not output 60 V

5 minutes ago, Hummin said:

Did you ask for an explanation in google, ai or youtube ?

. “60 V/2 A” means the fuse is rated for up to 60 V and approximately 2 A; it does not output 60 V

Please look again. I'm talking about the output current not the voltage

Edited July 16Jul 16 by CallumWK

1 minute ago, CallumWK said:

Because first of all I don't have a PPoE system, and secondly if using a UPS I would have to use 9 individual power adapters, plugged into an extension cord with 9 connections

I would have opted for a PoE system. Perhaps it's time for an upgrade. The NVR that is, not all of your cameras.

Decent CCTV NVR's come with onboard PoE in a variety of channels. Eg. 4, 8, 16, 32 and 64 channels.

You plug the UPS into a main power outlet, and the NVR into the UPS. A decent size UPS usually has 4 power outlets, so, NVR in one, internet router in another, maybe a small LED light in another, and the other one free for charging a phone.

There's plenty of them for sale on Lazada. Here's a random one from the front page. They also come in kits.

HikVision (decent brand) 8CH PoE.

https://www.lazada.co.th/products/pdp-i3870590673-s14811074345.html?c=&channelLpJumpArgs=&clickTrackInfo=query%253Acctv%252Bnvr%252BPoE%253Bnid%253A3870590673%253Bsrc%253ALazadaMainSrp%253Brn%253A1e321a3f76e386c0388d89b7f1a1b81a%253Bregion%253Ath%253Bsku%253A3870590673_TH%253Bprice%253A3400%253Bclient%253Adesktop%253Bsupplier_id%253A32412%253Bsession_id%253A%253Bbiz_source%253Ah5_internal%253Bslot%253A4%253Butlog_bucket_id%253A470687%253Basc_category_id%253A14399%253Bitem_id%253A3870590673%253Bsku_id%253A14811074345%253Bshop_id%253A2641%253BtemplateInfo%253A107882_A3_E%2523-1_C%2523&freeshipping=0&fs_ab=2&fuse_fs=&lang=en&location=Nonthaburi&price=3.4E%203&priceCompare=skuId%3A14811074345%3Bsource%3Alazada-search-voucher%3Bsn%3A1e321a3f76e386c0388d89b7f1a1b81a%3BoriginPrice%3A340000%3BdisplayPrice%3A340000%3BisGray%3Afalse%3BsinglePromotionId%3A-1%3BsingleToolCode%3AmockedSalePrice%3BvoucherPricePlugin%3A0%3Btimestamp%3A1784203681954&ratingscore=4.777777777777778&request_id=1e321a3f76e386c0388d89b7f1a1b81a&review=18&sale=61&search=1&source=search&spm=a2o4m.searchlist.list.4&stock=1

Then, plug the NVR into a huge UPS like this one, and you are good. (2000Va - 1200 watts) It doesn't have to be this big, but a UPS this size is big enough to run some other electronics during a power outage.

https://www.lazada.co.th/products/pdp-i3870590673-s14811074345.html?c=&channelLpJumpArgs=&clickTrackInfo=query%253Acctv%252Bnvr%252BPoE%253Bnid%253A3870590673%253Bsrc%253ALazadaMainSrp%253Brn%253A1e321a3f76e386c0388d89b7f1a1b81a%253Bregion%253Ath%253Bsku%253A3870590673_TH%253Bprice%253A3400%253Bclient%253Adesktop%253Bsupplier_id%253A32412%253Bsession_id%253A%253Bbiz_source%253Ah5_internal%253Bslot%253A4%253Butlog_bucket_id%253A470687%253Basc_category_id%253A14399%253Bitem_id%253A3870590673%253Bsku_id%253A14811074345%253Bshop_id%253A2641%253BtemplateInfo%253A107882_A3_E%2523-1_C%2523&freeshipping=0&fs_ab=2&fuse_fs=&lang=en&location=Nonthaburi&price=3.4E%203&priceCompare=skuId%3A14811074345%3Bsource%3Alazada-search-voucher%3Bsn%3A1e321a3f76e386c0388d89b7f1a1b81a%3BoriginPrice%3A340000%3BdisplayPrice%3A340000%3BisGray%3Afalse%3BsinglePromotionId%3A-1%3BsingleToolCode%3AmockedSalePrice%3BvoucherPricePlugin%3A0%3Btimestamp%3A1784203681954&ratingscore=4.777777777777778&request_id=1e321a3f76e386c0388d89b7f1a1b81a&review=18&sale=61&search=1&source=search&spm=a2o4m.searchlist.list.4&stock=1

The above is all DIY. You do not play around with any 240v.

Edited July 16Jul 16 by KhunHeineken

4 minutes ago, CallumWK said:

Please look again. I'm talking about the output current not the voltage

AI explains

The wording is confusing because the manual covers several different versions of the power supply in one sentence.

Here’s what it means:

• “60V/2A” is the rating of the individual PTC fuse, not the output voltage.

  • 60 V = the maximum voltage the fuse is designed to handle.

  • 2 A = the fuse starts to trip if the current exceeds about 2 A.

• The box still outputs only 12 V DC to the cameras.

The text in brackets refers to different models:

• 4-output model → 5 A total power supply, with 2 A PTC fuse per output.

• 9-output model → 10 A total power supply, with 2 A PTC fuse per output.

Then it lists another version:

• 60V/1.1A means each output has a 1.1 A PTC fuse instead.

• 4-output model → 3 A total.

• 9-output model → 5 A total.

• 18-output model → 10 A total.

So there are two families of power boxes:

• One uses 2 A PTC fuses on each output.

• The other uses 1.1 A PTC fuses on each output.

The “60 V” is simply the fuse’s voltage rating. It does not mean the camera receives 60 V.

For your 12 V CCTV system, the important numbers are:

• Output voltage: 12 V DC.

• Total power supply capacity: e.g. 10 A or 20 A.

• Individual PTC fuse rating: 1.1 A or 2 A per camera output, depending on the model.

The manual is poorly written because it combines several models into one paragraph, making it look as though all the numbers apply to the same unit when they do not.

Edited July 16Jul 16 by Hummin

Again, I never mentioned voltage, probably because I know it will not output 60V?

My question is, how do i provide each camera with 2 Ampere

13 minutes ago, KhunHeineken said:

I would have opted for a PoE system. Perhaps it's time for an upgrade. The NVR that is, not all of your cameras.

Decent CCTV NVR's come with onboard PoE in a variety of channels. Eg. 4, 8, 16, 32 and 64 channels.

You plug the UPS into a main power outlet, and the NVR into the UPS. A decent size UPS usually has 4 power outlets, so, NVR in one, internet router in another, maybe a small LED light in another, and the other one free for charging a phone.

There's plenty of them for sale on Lazada. Here's a random one from the front page. They also come in kits.

HikVision (decent brand) 8CH PoE.

https://www.lazada.co.th/products/pdp-i3870590673-s14811074345.html?c=&channelLpJumpArgs=&clickTrackInfo=query%253Acctv%252Bnvr%252BPoE%253Bnid%253A3870590673%253Bsrc%253ALazadaMainSrp%253Brn%253A1e321a3f76e386c0388d89b7f1a1b81a%253Bregion%253Ath%253Bsku%253A3870590673_TH%253Bprice%253A3400%253Bclient%253Adesktop%253Bsupplier_id%253A32412%253Bsession_id%253A%253Bbiz_source%253Ah5_internal%253Bslot%253A4%253Butlog_bucket_id%253A470687%253Basc_category_id%253A14399%253Bitem_id%253A3870590673%253Bsku_id%253A14811074345%253Bshop_id%253A2641%253BtemplateInfo%253A107882_A3_E%2523-1_C%2523&freeshipping=0&fs_ab=2&fuse_fs=&lang=en&location=Nonthaburi&price=3.4E%203&priceCompare=skuId%3A14811074345%3Bsource%3Alazada-search-voucher%3Bsn%3A1e321a3f76e386c0388d89b7f1a1b81a%3BoriginPrice%3A340000%3BdisplayPrice%3A340000%3BisGray%3Afalse%3BsinglePromotionId%3A-1%3BsingleToolCode%3AmockedSalePrice%3BvoucherPricePlugin%3A0%3Btimestamp%3A1784203681954&ratingscore=4.777777777777778&request_id=1e321a3f76e386c0388d89b7f1a1b81a&review=18&sale=61&search=1&source=search&spm=a2o4m.searchlist.list.4&stock=1

Then, plug the NVR into a huge UPS like this one, and you are good. (2000Va - 1200 watts) It doesn't have to be this big, but a UPS this size is big enough to run some other electronics during a power outage.

https://www.lazada.co.th/products/pdp-i3870590673-s14811074345.html?c=&channelLpJumpArgs=&clickTrackInfo=query%253Acctv%252Bnvr%252BPoE%253Bnid%253A3870590673%253Bsrc%253ALazadaMainSrp%253Brn%253A1e321a3f76e386c0388d89b7f1a1b81a%253Bregion%253Ath%253Bsku%253A3870590673_TH%253Bprice%253A3400%253Bclient%253Adesktop%253Bsupplier_id%253A32412%253Bsession_id%253A%253Bbiz_source%253Ah5_internal%253Bslot%253A4%253Butlog_bucket_id%253A470687%253Basc_category_id%253A14399%253Bitem_id%253A3870590673%253Bsku_id%253A14811074345%253Bshop_id%253A2641%253BtemplateInfo%253A107882_A3_E%2523-1_C%2523&freeshipping=0&fs_ab=2&fuse_fs=&lang=en&location=Nonthaburi&price=3.4E%203&priceCompare=skuId%3A14811074345%3Bsource%3Alazada-search-voucher%3Bsn%3A1e321a3f76e386c0388d89b7f1a1b81a%3BoriginPrice%3A340000%3BdisplayPrice%3A340000%3BisGray%3Afalse%3BsinglePromotionId%3A-1%3BsingleToolCode%3AmockedSalePrice%3BvoucherPricePlugin%3A0%3Btimestamp%3A1784203681954&ratingscore=4.777777777777778&request_id=1e321a3f76e386c0388d89b7f1a1b81a&review=18&sale=61&search=1&source=search&spm=a2o4m.searchlist.list.4&stock=1

The above is all DIY. You do not play around with any 240v.

How about keeping to the OP instead of telling me how I should spend my money?

Edited July 16Jul 16 by CallumWK

1 minute ago, CallumWK said:

How about keeping to the OP instead of telling me what I should do?

If that's the case, can you supply more information?

What connection do your cameras use?

4 minutes ago, KhunHeineken said:

If that's the case, can you supply more information?

What connection do your cameras use?

My cameras do not support PPoE, and it also doesn't matter what system I have.

All info is in the OP, and the question is how do I get 2 Ampere output

9 minutes ago, CallumWK said:

How about keeping to the OP instead of telling me how I should spend my money?

It is explained above

The tag is describing different models and the number of outputs available for each model. That’s why it lists 4-output, 9-output and 18-output versions, each with different total current ratings and, in some cases, different PTC fuse ratings.

4 minutes ago, Hummin said:

It is explained above

The tag is describing different models and the number of outputs available for each model. That’s why it lists 4-output, 9-output and 18-output versions, each with different total current ratings and, in some cases, different PTC fuse ratings.

So in fact, it never can provide 2A to 9 outputs?

10 minutes ago, CallumWK said:

So in fact, it never can provide 2A to 9 outputs?

You would need the model number or the label on the actual power supply to know whether the 9-output version is rated for 10 A, 20 A, etc. Without that, it’s impossible to say whether all nine outputs could supply 2 A simultaneously.

5 minutes ago, Hummin said:

You would need the model number or the label on the actual power supply to know whether the 9-output version is rated for 10 A, 20 A, etc. Without that, it’s impossible to say whether all nine outputs could supply 2 A simultaneously.

I see 60V/2A and then 4 outputs 5A and 9 outputs 10A. Doesn't that mean that with 9 outputs each can get maximum 10A divided by 9?

10 minutes ago, Hummin said:

You would need the model number or the label on the actual power supply to know whether the 9-output version is rated for 10 A, 20 A, etc. Without that, it’s impossible to say whether all nine outputs could supply 2 A simultaneously.

Would this 12V 20A power supply actually be a better option?

https://shopee.co.th/product/766035950/21901872187

I'm obviously not knowledgeable in this, so I looked at this device 12V30A, and asked the seller how many amp per channel.

This was the answer, any can explain if it will provide 2 amp on each channel for 9 channels?

1.1A per channel (total 10A divides average of 9 channels) There is a separate power filter for 2A.

5 hours ago, CallumWK said:

My aim is to connect 9 cameras, and provide 12V2A to each of them. Is this even possible, and how would I have to connect them to achieve that?

How have you arrived at 2A for each camera, from the power adapter or the camera itself?

To correctly select a multi output supply you need the cameras power requirements found on its label or spec sheet.

There are cameras that require a hefty supply but for example, a 2MP Hikvision with analogue output and IR illumination average around 5 watts power consumption or 420mA.

2 hours ago, Fruit Trader said:

How have you arrived at 2A for each camera, from the power adapter or the camera itself?

To correctly select a multi output supply you need the cameras power requirements found on its label or spec sheet.

There are cameras that require a hefty supply but for example, a 2MP Hikvision with analogue output and IR illumination average around 5 watts power consumption or 420mA.

The Dahua HDCVI cameras, connected using passive balun, are rated 1A, but my experience is that if I use individual 1A power adapters I get interference in the picture, and that interference increase at night when the infrared is enabled.

If I use 2A power adapters there is no interference. So I assume there is some loss over the lines.

The power supply from the OP gives a slight interference on the cameras that have a direct power line, but bigger one on those that get their power over the Cat5e LAN cable.

So I assume they need more current.

Edit to add: I have ordered the Hikvision power adapter unit which provide 1.1A per channel, and I get the same interference/distortion in the picture

Edited July 16Jul 16 by CallumWK

That you are seeing interference on the camera using the LAN cable suggests that you are getting enough volt-drop at the far end to interfere with the camera operation.

Two options: -

• Increase the supply voltage to compensate.

• Reduce the volt-drop.

Is there any adjustment at the power supply? You could safely go to 13-14V on the 12V cameras.

Using fatter wire or doubling/quadding up on the LAN cores would reduce the volt drop. Using 4 cores for + and 4 for - could be sufficient.

EDIT Alternatively, you could use a boost converter at the camera end to restore the voltage to the required 12V.

Something like this should do the trick. Set it for 12V output.

CODสเต็ปอัพ 12v วงจรเพิ่ม แรงดันไฟฟ้า 400W 15A DC-DC Boos...

ชื่อโมดูล: โมดูลเพิ่มกระแสคงที่ 400W. คุณสมบัติของโมดูล: โมดูลเพิ่มแรงดันแบบไม่แยก BOOST). แรงดันไฟฟ้าขาเข้า: DC8.5V-50V. กระแสไฟฟ้าขาเข้า: 15A สูงสุด เกิน 8A โปรดปรับปรุงการกระจายความร้อน. กระแสไฟฟ้า

2 hours ago, Crossy said:

That you are seeing interference on the camera using the LAN cable suggests that you are getting enough volt-drop at the far end to interfere with the camera operation.

The interference is also on the cameras that get their power over a 2x1mm wire. There is no interference using individual 12V2A adapters.

The maximum I can adjust the voltage is 12.7V. The individual adapters measure 12.1V

When you say "using individual 12V2A adaptors" are they on the end of the same cable run i.e. just substituting for the multi-output unit? If so that would remove the idea that it's reduced voltage.

I wonder if it's actually noise on the multi-unit getting into the power.

Am I correct that these are analog cameras rather than IP?

2 minutes ago, Crossy said:

When you say "using individual 12V2A adaptors" are they on the end of the same cable run i.e. just substituting for the multi-output unit? If so that would remove the idea that it's reduced voltage.

I wonder if it's actually noise on the multi-unit getting into the power.

Am I correct that these are analog cameras rather than IP?

Yes the adapters are connected at the same end. The cameras are analog (HDCVI) and I use passive baluns to transfer the signal over Cat5e wire.

Two cameras (the ones closest to the power source) get the power over the LAN cable. The other 6 have a 2 x 1.5mm wire as power source.

I previously use 12V1A adapters, and would get interference.

I have tried this Hikvision adapter and would get interference. The spec of this says they provide 1A per channel.

DS-2FA1205-C8

Multi-channel SMPS

60 W, 12 VDC/1 A per channel

Over current/short circuit/over voltage protection

Good EMC performance

Compact size; applicable to cameras

150 to 285 VAC wide voltage input

7 minutes ago, CallumWK said:

Yes the adapters are connected at the same end. The cameras are analog (HDCVI) and I use passive baluns to transfer the signal over Cat5e wire.

Two cameras (the ones closest to the power source) get the power over the LAN cable. The other 6 have a 2 x 1.5mm wire as power source.

I previously use 12V1A adapters, and would get interference.

I have tried this Hikvision adapter and would get interference. The spec of this says they provide 1A per channel.

Knowing voltages at each end for each supply type while on load is essential when trying to diagnose and eliminate possible causes. @Crossy has mentioned noise which is something else you might be fighting. Again what is the voltage at a camera that's showing interference and what is the voltage at a camera that has no interference.

4 minutes ago, Fruit Trader said:

Knowing voltages at each end for each supply type while on load is essential when trying to diagnose and eliminate possible causes. @Crossy has mentioned noise which is something else you might be fighting. Again what is the voltage at a camera that's showing interference and what is the voltage at a camera that has no interference.

All cameras have interference. I haven't measured at camera end, but I would assume that voltage drop is identical regardless which adapter is used.
The adapters that give no interference measure 12.1V and are rated 2A.

The power supply measures 12.7V at the maximum setting, so they will have a higher voltage at camera end, since they distribute their power over the same wires.

The Hikvision power supply also measured 12V.

I have previously used individual 12V1A adapters, and they would give interference. So can the low current be the reason?

3 minutes ago, CallumWK said:

I haven't measured at camera end, but I would assume that voltage drop is identical regardless which adapter is used.

Ok, answer this. Camera with interference measures 12V at the camera. Camera with no interference measures 12V at the camera. What's causing the interference.

5 minutes ago, Fruit Trader said:

Ok, answer this. Camera with interference measures 12V at the camera. Camera with no interference measures 12V at the camera. What's causing the interference.

All 8 cameras have interference. The 2 that get their power over LAN, and are closer to the power source, have more interference.

When using the 12V2A individual adapters there is no interference on any of the cameras.

All other options I have tried and mentioned above have interference on all 8 cameras

What does the interference look like, could you post a photo?

If you use the multi power supply to supply just one camera (whilst the others are on individual boxes) does it show interference?

I'm wondering if you have a ground loop coz you have a common power supply.