Calcium Formate 98% White crystalline or powder, slightly moisture absorption, bitter, neutrality, nontoxic. dissolve in water. Calcium Formate,Calcium Formate 98%,Feed Grade Calcium Formate HENAN JINHE INDUSTRY CO.,LTD , https://www.hnironoxide.com
Specific gravity: 2.023( 20 οC deg.c)
Tap density: 900 -1000g/KG
Decomposition temperature:> 400 οC .
New feedstuff additive fit for various animals. acidification. mildewproof. reinforce calcium. antibacterial. widely used in chemical, construct material and leather product.
Application
- Building industry
- Concrete cure accelerator
- Construction material
- Dyestuffs, pigments and optical brighteners
- Leather tanning
- Manufacturing of glues and adhesives
Key Properties
- Help to get better high strength earlier
- Especially good performance in winter
- Can cooperate with other additive such as antifreeze
-Help get shorter
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.
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.