In the power supply system, the surge protection needs to be divided into three levels of protection, because in the low-voltage power supply system, the transient over-current caused by the surge
Pressure, also known as TVS protection, is done by hierarchical protection. For example, at the entrance of the power supply system, for example, we are common
In the main power distribution room of the building, it is necessary to gradually start the absorption of the surge electric energy, and to suppress the instantaneous overvoltage generated by it in stages.
Protection. This is why the role of the surge protector is so important.
In the first-level line of defense, there is a need for surge protection of large-capacity power protection between the entrance in the system that connects the user's power supply and the ground.
Protector, it should be noted here that the surge protector installed in the first stage needs to have the maximum impact capacity of 100KA or even more than 100KA.
The maximum limit voltage of the surge protector should not exceed 2800 volts. This type of surge protector is called CLASSI level power supply.
Surge protector, we can also be referred to as SPD. But relying solely on these power-level surge protectors (SPDs) is not guaranteed.
To protect sensitive electrical equipment inside our power supply system.
In our second-level protection, surge protectors need to be installed at branch or distribution equipment where important or sensitive electrical equipment is used.
Such power protection surge protectors, these surge protection devices can absorb the remaining surge points at the entrance of the power supply equipment.
Quantity, but also can well suppress the overvoltage from the moment. The maximum impact capacity requirement of the surge protection device used in the second stage is
40KA or more can be well protected, and its limiting voltage should not exceed 2000 volts.
In the last level of surge protection, we need to install a built-in power protection surge protector inside the power supply equipment, doing this
The purpose is to completely eliminate the transient overvoltage generated in a small instant, in the case of electronic equipment that is particularly important or particularly sensitive.
For example, in computer and electronic communication, the protection of the third pole is necessary. The purpose of this can also be protected inside the system of the powered device.
Damaged by transient overvoltage. Http://
High Speed self-Recovery Rapid doors are the technological evolution of old, PVC high speed doors or heavy folding doors, now obsolete and not suited to today's industrial needs.
High-quality panels, the resistive safety edge fitted to the bottom edge of the door, photocells and barriers make this product both safe and durable, being totally self-repairing, thanks to its special [Anti Crash System".
This door designed with a perimeter structure in galvanized or stainless steel, which is ideal for sliding panels. The door panel rides effortlessly within a track, thanks to the special profile and hinge designed by us, requiring low maintenance. The panel is rolled up on a roller placed within the upper crossbeam.
The door can be equipped with a counterweight or ups batteries, to fully open the door in case of power failure, and can also be equipped with large transparent sections to create a brighter and safer working environment.
Self-Repairing Door Curtain made of reinforced PVC, with flexible weighted soft bottom edge.
The edge of curtain has continuous injection molded teeth that then move up and down in a self-lubricating polyethylene track attached to structural galvanized side frames.
Self-Recovery Rapid Door,Self Recovery PVC Rapid Door,Self Recovery Rapid Rolling Door,Self Healing Roll Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.selfrepairinghighspeeddoor.com