GINRI Voltage Monitoring Relay DC Over/Under Voltage Relay DVRD

External overvoltage is also called lightning overvoltage and atmospheric overvoltage. Caused by the discharge of thunderclouds in the atmosphere to the ground. It is divided into two types: lightning overvoltage and inductive lightning overvoltage. The lightning overvoltage has a duration of about tens of microseconds and has a pulse characteristic, so it is often called a lightning shock wave. The direct lightning overvoltage is the overvoltage that occurs when lightning flashes directly hit the conductive part of the electrical equipment. A lightning strike hits a live conductor, such as an overhead transmission line conductor, called a direct lightning strike. A lightning strike in a conductor that is normally grounded, such as a transmission line tower, causes its potential to rise and then discharges the live conductor. Direct lightning strike voltage amplitude can reach millions of volts, which will damage the insulation of electrical installations and cause short-circuit ground faults. Inductive lightning overvoltage is the overvoltage induced on the electrical equipment (including secondary equipment, communication equipment) that is not directly struck by lightning due to the sharp change of the space electromagnetic field during the lightning strike. Therefore, overhead transmission lines need to be equipped with lightning protection lines and grounding devices for protection. The lightning protection capability of the transmission line is usually indicated by the line lightning resistance level and the lightning strike rate.

Features:

• Compact modular size
• DC circuit monitoring of over-and undervoltage
• Adjustable over-and undervoltage threshold
• Adjustable trip delay time
• Powered by the measuring circuit
• 2C/O contacts
• 2 LEDs for status indication

Protective Functions

• DC overvoltage
• DC undervoltage

Applications

• DC cabinet
• Battery
• Electric control system

GINRI POWER AUTOMATION CO.,LTD. is a professional production voltage phase sequence protection device (and name: three-phase power monitor), and PLC output zoom Board, and smart type motor integrated protection device, and industrial parts manufacturers, technology development team in elevator industry, and refrigeration industry, and crane industry, environmental equipment, mechanical NC industry and the industrial following insurance industry, field has more than 10 years practice experience, has development out variety price economic and function excellent of products. CQC product quality system by China Quality Centre (3C) certification and CE certification, products in the manufacturing process in strict accordance with the ISO9001 quality assurance system requirements and professional technical and service support.

Voltage phase-sequence protection for many years (equipment, refrigeration equipment, crane (passenger and goods) elevators, control of DC power supply system (Cabinet) screens, precision air conditioners, room air conditioners, electric hoist, boiler equipment, laser equipment, parking equipment, cranes, compressors) and so on using the run.

PLC output amplifiers (environmental protection equipment, numerical control and automation equipment, automobile, plastic machinery, hydraulic machinery, ceramic foam machinery, woodworking machinery, machinery) and so on using the run.

Years of integrated Intelligent motor protector (power plants, paper mills, steel mills, aluminium plants, cement plants, sewage treatment plants, coal preparation plants, refineries, petrochemical plants), and so on using the run.

Product quality is stable and safe, reliable, and earned a solid market position in the market and a high reputation in the industry, received unanimous recognition and praise of our customers.

Ginri company always adhere to "scientific management as the core, the user needs for the Centre to focus on product quality, meticulous service is sincere," the spirit of enterprise, please call us from all walks of life, thank you!