cctv systems n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
CCTV SYSTEMS PowerPoint Presentation
Download Presentation
CCTV SYSTEMS

Loading in 2 Seconds...

play fullscreen
1 / 23

CCTV SYSTEMS - PowerPoint PPT Presentation


  • 100 Views
  • Uploaded on

CCTV SYSTEMS. CAMERA POWER SUPPLIES. CCTV SYSTEMS. A s mentioned before cameras operate on only two voltages. 12 volts DC 24 volts AC DVR’s do not provide power for the cameras. CCTV SYSTEMS.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'CCTV SYSTEMS' - herbst


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
cctv systems
CCTV SYSTEMS

CAMERA POWER SUPPLIES

cctv systems1
CCTV SYSTEMS
  • As mentioned before cameras operate on only two voltages.

12 volts DC 24 volts AC

  • DVR’s do not provide power for the cameras.
cctv systems2
CCTV SYSTEMS
  • You can order separate power transformers for each camera or you can use a power supply system.
  • PoE (Power over Ethernet) is available for powering cameras over UTP however it’s limitations are wattage requirements and distance.
  • Battery packs are also an option for some camera locations.
cctv systems3
CCTV SYSTEMS
  • 12 Volt DC 500 Milliamp Regulated
  • Regulated 12v 1 Amp Power Supply
cctv systems4
CCTV SYSTEMS
  • 12 Volt 8 Amp 16 camera power supply with each connection fused for added equipment protection.
  • Each camera is connected to a terminal via screw terminals with LED indicators.
cctv systems5
CCTV SYSTEMS
  • 24 volt AC, 8.4 amp 16 Camera Power Supply designed to power 16 cameras from one central location.
  • Each of the 16 outputs are fuse protected.
  • Output fuses are rated @ 500mA,

115VAC 60Hz, the input

fuses are rated @ 3.5 ampand

each output is separately fused

with LED indicators for each fuse.

cctv systems6
CCTV SYSTEMS
  • When connecting a camera’s power leads it should be placed in corresponding order of each camera.

THE CHANNEL 1 CAMERA SHOULD BE CONNECTED TO POSITION 1 IN THE POWER SUPPLY FOR EASE OF TROUBLESHOOTING.

cctv systems7
CCTV SYSTEMS
  • Here is a close up of a 4 channel power supply showing the fuses and screw terminals, also visible are the knock outs for routing cables in.

KNOCK OUTS

cctv systems8
CCTV SYSTEMS
  • Power supplies with battery backup are also available for CCTV systems.
cctv systems9
CCTV SYSTEMS
  • In many cases when you need the CCTV system up and running the most is when the power goes out, that is when the looters come out.
  • A continuous duty UPS (uninterruptible power supply) charges its battery constantly and uses the battery to provide electrical current.
cctv systems10
CCTV SYSTEMS
  • This allows the UPS to compensate for spikes, surges and brownouts and provides clean power.
  • The equipment continues to operate at the proper voltages and is protected from voltage spikes and surges.
cctv systems11
CCTV SYSTEMS
  • When using a UPS it is plugged into an outlet and the power supply will plug into the UPS, all other equipment also gets plugged into the UPS.
  • If you have a 24VAC system with 16 cameras and the 16 power terminals are connected in parallel rated at 100 ohms at ½ an amp how many volts will each terminal provide?

24VAC………TRICK QUESTION

cctv systems12
CCTV SYSTEMS
  • This is a 4 port PoE switch that can be used with a 4 channel CCTV system using UTP cabling.

PORT 1 ON THIS SWITCH WOULD CONNECT TO THE LAN PORT OF AN NVR OR DVR

cctv systems13
CCTV SYSTEMS
  • Here is a 16 port managed PoE switch that is perfect for a 16 channel CCTV system.
cctv systems14
CCTV SYSTEMS
  • CCTV power supplies are grounded through a technical ground which means they use the third prong of the power cord as ground.
  • The 16 channel power supply boxes usually come with an extra fuse usually rated at 250 volts and 500mA.
cctv systems15
CCTV SYSTEMS
  • Its always a good idea to have extra fuses handy, especially after initially turning the system on.
  • When servicing cameras the system should be powered down, if it can’t be powered down then the power to the camera in question should be disconnected.
cctv systems16
CCTV SYSTEMS
  • If running siamese type coax cable you will need the power supply adapter if there are no screw terminals on the back of the camera.
  • These power adapters can be spliced on with dolphins crimps.

POWER ADAPTER WITH SCREW TERMINALS

cctv systems17
CCTV SYSTEMS
  • In most instances you will use the electrical spade plugs on the 18/2 power leads when connecting them to a camera.

18/2: 18 AWG, 2 CONDUCTOR

cctv systems18
CCTV SYSTEMS
  • If a separate 24VAC power source is required you can use a 24VAC transformer rated at 500mA using 18AWG lamp cord.
cctv systems19
CCTV SYSTEMS
  • 12 volt 8 cell AA battery holders are also available for remote locations that utilize wireless cameras.
cctv systems20
CCTV SYSTEMS
  • The location of the CCTV equipment will need to have adequate power outlets available for all of the equipment to be plugged in.
  • A simple 16 channel system has other power requirements: The DVR, the monitor/s, the power supply, and any other miscellaneous power supplies.
cctv systems21
CCTV SYSTEMS
  • CCTV installs that have long cables runs usually 1000 feet or longer may run into voltage drop problems.
  • One way to address this problem is to step up to the next biggest wire gauge which we talked about in a previous lesson.
cctv systems22
CCTV SYSTEMS
  • If the cable is already in place then you have a choice, pull the cable out and run a larger gauge or………………….
  • What would you do to address voltage drops in a long cable run?

INSTALL AN ACTIVE BALUN/AMP