A Voltage Meter is an essential electrical measuring instrument used to determine the potential difference (voltage) between two points in an electrical circuit. It plays a crucial role in monitoring, diagnosing, and maintaining electrical and electronic systems. Voltage meters can measure direct current (DC) and alternating current (AC) voltages, depending on their design. They are commonly used in laboratories, industrial automation, power distribution systems, and household electrical devices.

The working principle of a voltage meter is based on measuring the electrical potential difference across its input terminals. When connected in parallel to the circuit or component under test, the meter detects the voltage drop and converts it into a readable value. In modern systems, digital voltage meters (DVMs) employ analog-to-digital converters (ADC) to display accurate numerical readings on an LCD or LED screen. They offer higher precision, stability, and ease of reading compared to analog meters, which use a moving coil and pointer scale.

Voltage meters are available in a variety of forms, including panel-mounted meters, handheld testers, and integrated digital multimeters. Many advanced models provide additional features such as auto-ranging, data hold, min/max recording, and true RMS measurement for accurate readings under complex waveform conditions.

In industrial and energy management applications, voltage meters are used to monitor supply voltages, detect fluctuations, and ensure stable operation of electrical equipment. In electronic testing, they help verify circuit functionality and troubleshoot faults. High-voltage models are also used in power transmission and distribution systems to ensure safety and efficiency.

Overall, a voltage meter is an indispensable tool for engineers, technicians, and electricians. Its combination of accuracy, reliability, and versatility makes it vital for testing, monitoring, and maintaining both simple and complex electrical systems.

Accuracy of Measurement

• voltage: level 0.5

Signal Input

• Connection Mode: Three phase fourwires, three phase three wires

• Rated Voltage: AC 0-600V

• Overload Voltage: 1.2 times ( Continued ),2 times/second( instantaneous)

• Power Consumption:<1VA/phase (voltage)

• Impedance:>300KQ

• The Frequency: 45-65Hz or DC

Auxiliary Power Supply

•  Working range AC 220V

• Power Consumption: <4VA

Function Module

• Communication Interface: 1 way RS-485 communication, Modbus-RTU protocol

• Baud Rate: 1200-9600bps, the default is 2400bps

• Switch Input: 4 ways

• Switch Output: 3 ways(capacity: AC 250V /5A, DC 30V/5A)

• Transmission Output: 3 ways(analog output: 0/4-20mA or 0-5/10V)

Please note that above is our nomal function, please contact us for customizing special products.