LCD Display Single Phase Voltage Monitoring Relay , 250VAC Relay SVR1000

Overvoltage refers to the long-term voltage change phenomenon when the rms voltage of the AC voltage rises above the rated value and exceeds 10% of the rated value, and the duration is longer than 1 minute; the occurrence of overvoltage is usually the result of momentary load switching. Normal use occurs when the inductive or capacitive load is turned on or off

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 the power system and are of great significance for the manufacture of electrical equipment and the operation of power systems.

-- Powered by the measuring circuit

-- Compatible with AC and DC supply

-- Built-in LCD and keypad afford a precise,digital setting

-- Compact modular 43mm housing

-- Adjustable over- and undervoltage threshold

-- Independent adjustable delay time for overvoltage, undervoltage

-- Adjustable reset mode:automatic reset or manual reset

-- 1 CO & 1NC contacts

-- Fault recording with last 3 faults

♦ Protective Functions

-- Overvoltage -- Undervoltage

♦ Typical Applications

• Pumps • Fans • Air-conditioning system

• Blowers • Motors • Compressors • Elevators

Approvals

• CE • CCC

♦ Technical data