The installation position of the front-end camera is often divided into indoor and outdoor, and the camera installed in the room is generally not subject to direct lightning strikes. However, lightning overvoltage may also cause infringement on the camera, and outdoor equipment needs to be considered to prevent direct lightning strikes. Faced with this situation, how do we conduct lightning protection?
The usual method is that we will place the front-end equipment such as the camera within the effective protection range of the lightning receptor (lightning rod or other lightning conductor). When the camera is set up independently, in order to prevent the transient high potential of the lightning rod and the deflector, the lightning rod is preferably 3-4 meters away from the camera. In addition, in order to prevent electromagnetic induction, the camera power cord and signal line led along the telephone pole should be put in the metal tube to achieve the shielding effect, and both ends of the shielding metal tube should be grounded.
In order to prevent lightning waves from invading front-end equipment along the line, we usually install suitable lightning arresters on each line in front of the equipment. Taking the network monitoring system as an example, the DK-DW/M 220 network monitoring lightning protector is optional; the power input front end should also be equipped with Class B and Class C lightning protectors. The signal line has a long transmission distance and a low withstand voltage level. It easily induces lightning current and damages the equipment. In order to conduct the lightning current from the signal transmission line to the ground, the signal overvoltage protection device must respond quickly. When designing the signal transmission line, the protection must be considered. The situation, according to the signal transmission rate, signal level, starting voltage and lightning and other traffic and other parameters to choose the right lightning protection equipment.
So how to choose the right lightning protection device
Network video monitoring protection scheme
The parameters of the SPD are very important. It is important to understand the parameters and their significance. You need to know the following parameters:
Nominal voltage Un: The rated voltage of the protected system corresponds. In the information technology system, this parameter indicates the type of protector that should be used. It indicates the effective value of the AC or DC voltage.
Rated voltage Uc: Can be permanently applied to the designated end of the protector without causing changes in protector characteristics and activating the maximum rms voltage of the protective element.
Rated discharge current In: The lightning current amplitude that can be sustained without damage.
Maximum discharge current Imax: The maximum surge current peak value to which the protector is subjected when a standard lightning wave with a waveform of 8/20 μs is applied to the protector once.
Voltage protection level Up: The maximum value of the protector in the following tests: a flashover voltage with a slope of 1KV/μs; residual voltage of the rated discharge current.
With lightning arrester product test report
Product test report
When selecting lightning protection products, products that have passed the detection by the lightning protection center must be selected to ensure safety performance. In the selection of manufacturers, we must focus on the strength of the manufacturers, as long as possible to choose the manufacturers with many years of experience in lightning protection to ensure the protection of lightning protection products.
Select lightning arresters that comply with the law
The selection of lightning protection devices is a very important link. Only by choosing lightning protection devices can we really ensure the safety of buildings and equipment. Therefore, Dikai lightning protection in this remind the majority of users, we must learn more about the performance of lightning protection devices, select high-quality manufacturers for the purchase of lightning protection products.
Our RJ45 Connector for Cat6 Patch Cord is well-controlled in quality. We buy the raw material, and sell the finished products RJ45 connectors, all the steps are processed in our factory. We could control the quality consistent, and make the lead-time flexible. The annual shipment of RJ45 connectors for 2011 is over 300,000,000pcs. As a professional manufacturer of Cat6 RJ45 Connector, we have full range of connectors. Welcome any of your enquiry.
Packing rate:
|
SPEC.
|
Q'TY PCS/CTN
|
N.W. KGS
|
G.W. KGS
|
Dimension(cm)
|
|
6P2C
|
20,000
|
15.96
|
17.50
|
49.6*36.2*26.5
|
|
6P4C
|
20,000
|
15.86
|
17.40
|
49.6*36.2*26.5
|
|
6P6C
|
20,000
|
16.13
|
18.03
|
49.6*36.2*26.5
|
|
4P4C
|
25,000
|
16.59
|
18.23
|
49.6*36.2*26.5
|
|
8P8C
|
10,000
|
15.26
|
17.00
|
49.6*36.2*26.5
|
|
8P Shielded
|
10,000
|
25.40
|
27.50
|
51.6*36.2*32.0
|
|
Cat.6 UTP
|
10,000
|
13.70
|
15.80
|
51.6*36.2*32.0
|
|
Cat.6 Shielded
|
10,000
|
23.72
|
25.82
|
51.6*36.2*32.0
|
Packing picture: 1000pcs/bag, or 100PCS/bag is optional;
Quality Control: AOI system (Automatic Optical Inspection);
Cat6 RJ45 Connector
Cat6 RJ45 Connector,Cat6 Modular Plug,Cat6 Modular Jack
Ningbo Excellence Communicated Connector Co., Ltd , http://www.patchcordmaker.com
