WBT-820A series microcomputer backup automatic switching device

WBT-820A is one of the latest HELLO series products launched by Xuji. It is a high-quality and cost-effective integrated protection, measurement and control device provided by Xuji based on decades of successful experience in the manufacturing of secondary equipment in power systems. The WBT-820A series microcomputer backup automatic switching device is mainly suitable for automatic switching of backup power supplies with voltage levels of 220kV and below.

H. The quality of E, L, L, and O is a common feature of Xuji HELLO series products, as follows:

H: High quality includes:

High tech: Adopting on-site configuration technology (FCT) and visual software development technology (VLD).

High quality: Based on professional and mature software and hardware platforms, rich operating experience and fully validated principle algorithms, automatic testing as the premise, advanced R&D management concepts and R&D management tools as the means, to ensure the quality of each link in the R&D, production, and manufacturing processes, and provide users with high-quality products.

E: Easy, easy work includes:

Easy to use: With a user-friendly interface and a Windows like operation menu, it features a debugging guide system and a one click calibration function, making on-site debugging, maintenance, and calibration work easy.

L: Low, low consumption includes:

Low input cost: Different devices share plugins, reducing the cost of purchasing devices and spare parts reserves.

Low failure rate: Advanced detection technology and a comprehensive production quality assurance system greatly reduce product failures and minimize downtime for protected objects.

L: ReaLize, the implementation technology includes:

Platformization: The design of software and hardware adopts the idea of platformization, allowing protection devices of different voltage levels to share hardware platforms, and different hardware platforms to share software, reducing the need for future hardware and software upgrades and maintenance work.

Specialization: Research and development work in different fields is completed by professionals, integrating research and development results from different levels and fields through standardized interfaces, allowing users to fully enjoy high-tech products.

Modularization: Encapsulate all functional modules into flexible relays, and configure different flexible relays for different devices to complete their functions, enabling them to quickly respond to personalized needs of different users.

O: TechOlogy, patented technology includes:

VLD development technology: The VLD development tool is similar to a "PLC" development environment, in which all protection logic is composed of different visualized flexible relays, realizing the industry's dream of developing programs using relay protection languages.

Dual connector technology: Adopting the technology of rear plug-in dual connectors, the principle of complete separation of strong and weak electricity improves the electromagnetic compatibility of the device hardware.

1. Technical indicators

1.1. rated data

a. Rated power supply voltage: DC220V or DC110V (specify when ordering)

b. Rated AC data: AC voltage 100/3 V, 100V

AC current 5A or 1A (specify when ordering)

Rated frequency 50Hz

1.2. Device power consumption

a. AC voltage circuit: not more than 1VA per phase;

b. AC current circuit: When In=5A, each phase should not exceed 1VA; when In=1A, each phase should not exceed 0.5VA;

c. Protection power circuit: During normal operation, it should not exceed 12W; during protection action, it should not exceed 15W.

1.3. environmental condition

a. Environmental temperature:

Work: -25 ℃ to+55 ℃.

Storage: -25 ℃~+70 ℃, relative humidity not exceeding 80%, indoor environment with no acidic, alkaline or other corrosive or explosive gases in the surrounding air, rain and snow proof; Under the limit value, no excitation is applied, and the device does not undergo irreversible changes. After the temperature is restored, the device should be able to work normally.

b. Relative humidity: The average maximum relative humidity in the wettest month is 90%, and the average minimum temperature in that month is 25 ℃ without condensation on the surface. When the maximum temperature is+40 ℃, the average maximum humidity does not exceed 50%.

c. Atmospheric pressure: 80kPa~110kPa (relative altitude below 2km).