12V DC Voltage Monitoring Relay DIN Rail Mounting with Normai / Trip Indicators

What is over voltage
Overvoltage refers to the long-term voltage fluctuation phenomenon when the rms voltage of the AC voltage rises above the rated value and exceeds the rated value for more than 1 minute. The overvoltage is usually the result of the load switching. For example: Cut off a large capacity load or energize the capacitor bank (overvoltage caused by excess reactive power compensation).
The abnormal voltage that exceeds the working voltage in the power system under certain conditions rises, which is an electromagnetic disturbance phenomenon in the power system. The insulation of electrical equipment withstands the operating voltage for a long time, and must also be able to withstand a certain degree of overvoltage, so as to ensure the safe and reliable operation of the power system. Studying the causes of various overvoltages, predicting their amplitudes, and taking measures to restrict them are the preconditions for determining the insulation coordination of power systems, and are of great significance for the manufacture of electrical equipment and the operation of power systems.

Overvoltage causes
Abrupt changes in the state of the circuit and the electromagnetic state in the power system are the root cause of overvoltage generation. Overvoltage is divided into two categories of external overvoltage and internal overvoltage. Studying the causes of various overvoltages in power systems, predicting their amplitudes, and taking measures to limit them are prerequisites for determining the insulation coordination of power systems, and are of great significance for the manufacture of electrical equipment and the operation of power systems.
Regardless of the external overvoltage or internal overvoltage, it is affected by many random factors. It is necessary to combine the specific conditions of the power system, obtain data through various methods such as calculation, simulation and field measurement, and use probabilistic statistical methods to predict overvoltage.
For the cause of over-voltage, the power system must take protective measures to limit the over-voltage amplitude. Such as the installation of lightning protection lines, lightning arresters, reactors, switch contacts plus parallel resistance, etc., in order to reasonably implement insulation coordination to ensure the safe operation of the power system.

Descirbution of DC Voltage monitoring relay
-- Compact modular size
-- DC circuit monitoring of over- and undervoltage
-- Adjustable over- and undervoltage threshold
-- Adjustable trip delay time
-- Powered by the measuring circuit
-- 2 C/O contacts
-- 2 LEDs for status indication
-- Overvoltage
-- Undervoltage
• DC cabinet • Battery
• Electric control system

♦ Technical data

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.

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