Automatic Voltage Regulator DVR2000E

The DVR2000E is an electronic, solid-state, microprocessor-based control device. The DVR2000E regulates the output voltage of a brushless, ac generator by controlling the current into the generator exciter. Input power to the DVR2000E is from a multi-pole, high-frequency, permanent magnet generator (PMG).

The DVR2000E is supplied in an encapsulated package designed for behind-the-panel mounting. The DVR2000E is held in place by thread-forming screws that thread into its plastic shell. Front panel indicators (LEDs) annunciate regulator status and system conditions. DVR2000E connections are made through quarter-inch, quick-connect terminals on the rear panel. A 9-pin DB-9 type connector on the rear panel provides communication between the DVR2000E and an IBM compatible PC.

When the DVR2000E Voltage regulator is mounted on the generator at the factory a molded cover is provided.

This cover allows the system to be in compliance with UL 508 as live terminals and heatsinks could be exposed to unintentional contact. As stated this cover must be installed whenever the voltage regulator is energized.

FEATURES

DVR2000E units have the following features and capabilities.

• Four control modes:

automatic voltage regulation (AVR), manual or current regulation (FCR), power factor (PF) regulation, and reactive power (VAR) regulation.

• Programmable stability settings.

• Soft start control with an adjustable time setting in AVR control mode.

• Overexcitation (OEL) limiting in AVR, VAR, and PF control modes.

• Underfrequency (volts/hertz) regulation.

• Crowbar circuitry protects the area.

• Overtemperature protection.

• Three-phase or single-phase generator voltage (RMS) sensing/regulation in AVR mode.

• Single-phase generator current sensing for metering and regulation purposes.

• current and voltage sensing.

• Four contact sensing inputs for system interface.

• One common output relay for alarm indication and trip functions.

• Six protection functions (overexcitation shutdown, generator overvoltage shutdown, DVR overtemperature shutdown, loss of generator sensing shutdown, overexcitation limiting and crowbar shutdown).

• Generator paralleling with reactive droop compensation and reactive differential compensation.

• Front-panel human-machine interface (HMI) indicates system and DVR2000E status and gives the ability to make setting changes at the front panel.

LONG XIN TECHNOLOGY CO.,LIMITED lies in the economic core area of western China - Liangjiang New Area, Chongqing with a profound history, flourishing culture and developed manufacturing industry, is an instrument base of national automation control and a credit enterprise.

    As a professional manufacturer of generator units and controllers, our company boasts the perfect capabilities of design, development, inspection and production. Our products include all kinds of generator units, controllers, engine actuators, engine control panels and a variety of speed, water temperature and pressure sensors. We have obtained the trust and reputation from the universal customers at home and abroad through perfect and professional pre-sales, sales and after-sales service. The strategic pattern based on domestic market and serving for overseas market has been formed by our products all over the world.

    The advanced technology, outstanding employees, sophisticated equipment, strict management and professional service are the foundation for our consistent development. “Credit, Reliability and Professionalism” is our service concept. The well-trained R&D team, advanced technology and equipment, perfect process and scientific management lay a solid and reliable quality foundation for our products and make our product performance index enable to meet the demands of the universal customers at home and abroad. Upholding the production and management philosophy of “Professionalism by Concentration, Success by Credit”, our company provides all-round service for the customers at home and abroad. The various types of generator units and related control boxes, control cabinets, control panels, protectors, governors, etc. developed by our company, the advancement, practicability and reliability of which even surpass the foreign products of the same line, enjoying popularity and reputation from customers at home and abroad.

    As a private-owned technology enterprise, following the direction of “Technological Innovation, Independent Innovation and Professional Service” and upholding the quality policy of “Scientific Management, Elaborate Manufacture, High-quality Service and Excellence Pursuit”, we will fully establish quality management system and consistently upgrade our core competitiveness. Holding the concept of “All-win with Customers, Partners and Employees”, we will continuously gather elite force and integrate industry resource to create more and broader values for customers.

    Facing the historical moment of the development of Chongqing Liangjiang Special Area, we will seize the opportunity and exert more efforts to provide top-quality products with the most reasonable price and perfect service; Oriented by customer demands, aiming at the increase of product utilization rate and customer demands, we will consistently introduce the advanced technology at home and abroad to bring more complete control scheme of generator units for customers.

    We believe we will obtain a better future as long as we orient by market, motivate by innovation, survive by quality and make creditable friends with customers. Warmly welcome customers at home and abroad to visit us and make technical exchange. We would like to sincerely cooperate with older and new customers for common development and brilliance.