1, the type of load, output current and inrush current The steady-state current flowing through the relay output during use shall not exceed the rated output current at the corresponding temperature specified in the product specification. It may occur that the inrush current shall not exceed the overload capacity of the relay. When the user selects the solid-state relay, the relay must be considered to ensure Under the premise of steady-state operation, it can withstand this surge current. The following gives the recommended value of the derating factor of the solid-state relay's rated output current under the steady-state current of various loads at room temperature after considering the load surge current and the relay overload capacity. Type of load Resistance Electric incandescent lamp AC magnet Transformer Single-phase motor Three-phase motor Derating coefficient 1 0.8 0.5 0.5 0.5 0.12 to 0.24 0.18 to 0.33 Example: Let the solid state relay load be an electromagnet. The working current of the electromagnet is 1.4A. According to the derating factor, the rated current value is calculated as 1.4A/0.5=2.8A, leaving a margin, and the 3A solid state relay is more appropriate. 2, the output voltage, transient voltage and DV/DT DC solid-state relays are only suitable for controlling DC power supplies and loads. AC solid state relays are only suitable for controlling AC power and loads. AC DC Universal (bidirectional) solid-state relays are suitable for AC, DC, and bi-directional square wave control. The voltage of the load power supply shall not exceed the rated output voltage of the relay, nor shall it be lower than the specified minimum output voltage. It may be added to the maximum voltage peak of the relay output and must be lower than the transient voltage value of the relay. When switching AC inductive loads, single-phase motors and three-phase motor loads, or when these load appliances are powered on, the relay output may have twice the peak voltage of the power supply voltage. For inductive and capacitive loads, when the AC solid state relay is turned off at zero current, the power supply voltage is not zero, and a larger DV/DT value is added to the output of the relay, so a relay with a high DV/DT should be used. 3, input characteristics Resistive input solid-state relay input voltage can generally be divided into two files, to adapt to the low-voltage input signal 10-30V, there is a constant input solid-state relay input voltage range, in the range of 4-24V, solid-state relay input Current is generally around 10MA, compatible with TTL circuits. 4, other characteristics Including solid state relay output voltage drop, output leakage current, zero point AC, insulation resistance, dielectric pressure and other electrical characteristics. Where the solid state relay has zero and non-zero two ways, non-zero please help the user to indicate that the use of solid state relays to have a margin to prevent load short circuit, should use the appropriate amount of fast fuse, in the control of inductive load, must Considering the start-up characteristics of the load, when the inductive load is controlled, the start-up characteristics of the load must be taken into consideration. When the current is greater than 40 A, the fan must be forced to cool or water-cooled, and the wind speed is greater than 6 m/s. Note: 1. For the load of 10A and above, the radiator must be installed, and the fan above 40A should be forced cold or water-cooled. 2. When using inductive load, please connect a varistor to the output terminal, which is 1.6-1.9 times of the load voltage. What is an outdoor wireless access Point? Outdoor Access Point,Wifi 5 Outdoor Wireless Ap,Wifi 6 Outdoor Wireless Ap,1Km 300Mbps Outdoor Access Point Shenzhen MovingComm Technology Co., Ltd. , https://www.mcrouters.com
Outdoor Wireless Access Points (aps) are wireless networking devices designed to provide Wi-Fi coverage in outdoor environments and are often used in industrial and corporate environments that require outdoor Wi-Fi access, as well as in public Spaces such as parks, stadiums, campuses, and outdoor event venues.
Outdoor wireless access points are built with a variety of weather conditions and tolerance to high temperatures in mind, so they are often equipped with weatherproof enclosures to protect internal components from moisture, dust, and other environmental elements. In addition, outdoor wireless access points are equipped with high-gain antennas that enable long-range coverage while simultaneously supporting multiple devices. Some outdoor wireless access points also have grid networks that connect a large number of wireless access points to provide seamless Wi-Fi coverage over a wide area. To protect the security of the network, outdoor wireless access points are also equipped with advanced security features such as WPA3 encryption and guest access restriction. As an important component of outdoor Wi-Fi infrastructure, outdoor wireless access points provide a reliable and secure connection within a certain range of the external environment.
Why are outdoor wireless access points important?
Here's why:
In order to provide reliable and fast Wi-Fi coverage in outdoor environments, outdoor wireless access points must be equipped to cope with the increasing use of mobile devices and meet the wireless connectivity needs of public places. This will support individuals to stay connected, allowing them to use the Internet in public Spaces such as parks, stadiums and universities.
For many organizations and industries, outdoor Wi-Fi connectivity is essential for daily operations. For inventory management and control systems, wireless facilities and warehouses must use wireless communication. These systems must be supported by wireless access points.
Wireless access points can support new applications such as outdoor video surveillance, smart lighting and environmental monitoring. Without outdoor wireless access points, many applications that require wireless connectivity will be difficult to sustain.
Visitors expect Wi-Fi connectivity in public areas such as parks and stadiums. Businesses that provide outdoor Wi-Fi can significantly enhance guest interaction and improve the overall customer experience.
All in all, outdoor wireless access points are equally important to businesses and companies because they allow them to reach out far beyond their original physical premises, reaching out to potential audiences that would otherwise be out of reach.
What are the important characteristics of outdoor wireless access points?
The following characteristics of an outdoor wireless access point are important:
Weatherproof and durable design: Outdoor wireless access points must be able to withstand harsh weather conditions and extreme temperatures. In addition, a weatherproof case is required to protect internal components from moisture, dust, and other environmental elements.
High-speed connectivity: In order to provide service to a large number of users and devices, outdoor wireless access points should provide high-speed connectivity.
Advanced Features: To provide high performance and powerful support for a wide range of devices, outdoor wireless access points should have advanced features including beamforming, MU-MIMO technology, and grid networking.
Simple installation and management: Outdoor wireless access points should be built with centralized management and monitoring capabilities backed by a cloud-based platform for easy installation and management.
Power options: Depending on the deployment area and power availability, the outdoor wireless access point should accept multiple power sources, such as PoE (Power over Ethernet) or direct AC power.
Security: To protect the network and users' data, outdoor wireless access points should include security features such as WPA3 encryption and guest access restrictions.
Customization: To accommodate diverse deployment Settings and extend coverage, outdoor wireless access points should include retrofit options including installation kits and antennas.
Simply put, outdoor wireless access points should be built from the outset to ensure that they provide reliable, high-performance wireless connectivity in demanding outdoor environments, while ensuring that they are easy to install, manage, and provide advanced features and customization capabilities.