Product Overview
Three-in-one series products are customized lightning protection products for analog video cameras with pan/tilt control, which protect camera power supply, vision cheek, pan/tilt control and other circuits from lightning electromagnetic pulse, induced overvoltage and operating overvoltage, and are widely used in public security, traffic monitoring and other fields. This series of products has the characteristics of high integration, low insertion loss, low residual pressure and convenient installation, and has good lightning protection effect.
Main technical indicators
| Indicator | PHL-12/D12BM/D12Y2 | PHL-24/D12BM/D12Y2 | PHL-220/D12BM/D12Y2 |
| Video/control section | |||
| Operating voltage Uc | 12V | ||
| Nominal discharge current In | 3kA（8/20μs） | ||
| Maximum flow capacity Imax | 5kA（8/20μs） | ||
| Protection level | 40V（10/700μs） | ||
| Transmission rate Vs | Control：10Mbps Video：100 Mbps | ||
| Response time (Ta) | 1ns | ||
| Insertion loss | 0.5dB | ||
| Joint form | Video: BNC(J and K are configured according to actual needs) Pan/tilt control: crimp type |
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| Power supply | |||
| Operating voltage （Un） | 12VDC | 24VAC | 220VAC |
| Nominal discharge current In | 5kA（8/20μs） | ||
| Maximum flow capacity Imax | 10kA（8/20μs） | ||
| When the protection level is 1n，8/20μs Up | 60V | 100V | 900V |
| Joint form | Crimp type | ||
| Outline dimension (excluding grounding wire) | 130*80*30mm | ||
| Protection level | IP20 | ||
Installation environment
Please be sure to stay indoors or in a waterproof box.
Avoid installation in places with violent brush vibration.
Ensure that the voltage, current and signal transmission rate of the power supply part match with the lightning arrester.
Ensure that the lightning arrester can be reliably grounded, and the power frequency grounding resistance is less than 10 ohms.
Installation preparation
Tools: one cross screwdriver, one straight screwdriver, one wire stripper, etc.
| Auxiliary material | Specifications | Quantity | Function |
| Power cord | ≥0.75mm² Power cord 15-30CM | 1 piece | Connect the lightning arrester to the camera power supply |
| Video jumper | 75Ω coaxial cable 15-30CM | 1 piece | Connect the lightning arrester with the camera video. |
| Signal line | Single multi-core signal line 15-30CM | 1 piece | Connect the lightning arrester with the camera pan-tilt control. |
| PE connection line | ≥1.5mm² | 1 piece | Nearby grounding |
| Screw | M4 | 2 capsules | Fixed lightning arrester |
Installation diagram
1. Prepare one power cord, one tripod head signal cord and one video cord respectively. Used to connect the lightning arrester with the camera
2.Fix the lightning arrester in the waterproof box
3.Complete the connection between the power supply, video and control output ports of the lightning arrester and the camera
4.Complete the connection between the power supply, video and control input ports of the lightning arrester and the monitoring center or optical transceiver.
Topology diagram of typical application of products
Common faults
| Common faults | Possible reasons | Processing method |
| After the lightning arrester is installed, there is snow or no signal in the video picture. | Lightning arrester transmission performance is not up to standard. | Replace the lightning arrester |
| Transmission distance exceeds the maximum allowable range. | Ensure that the coaxial cable connection between devices does not exceed 90M. | |
| Lightning arrester and cable characteristic impedance do not match. | Lightning arrester usually has an impedance of 75Ω. | |
| After the lightning arrester is grounded, the control signal of the pan/tilt is blocked or there are snowflakes on the screen; After the ground wire is not grounded, the video picture is normal. | The ground voltage fluctuates excessively. | Transformation of the grounding network, if the signal is blocked, it means that the lightning arrester has been burnt out and needs to be replaced. |
| After the lightning protector runs for a period of time, the monitor has no picture, and the control signal of the pan/tilt is blocked. After the lightning protector is removed, the monitor appears. | Lightning protection device is damaged by lightning or other reasons. | Replace the lightning arrester |