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What Is a High Voltage Indicator?
The high voltage indicator (hv indicator) is an advanced electronic device with the function of displaying high-voltage electric energy parameters. It can visually display important parameters such as voltage, current, and power in the power system, and effectively help operation and maintenance personnel monitor and manage high-voltage current.
The main function of the HV voltage indicator is to measure and display the voltage of the power system in real-time. It helps engineers and technicians monitor voltage levels to ensure the stable operation of power systems. In high-voltage systems, accurate measurement of voltage levels is critical to safety and performance.
This high voltage charged display device usually has high-precision voltage sensors that can accurately measure high voltage levels. The sensor converts the voltage signal into a digital signal and transmits it to a digital display. Digital displays typically have an easy-to-read digital display that clearly shows the voltage value.
1. The working principle of the high voltage indicator
Detection of high-voltage electric fields: A sensitive detector such as an electrostatic induction discharge tube or a capacitive sensor is used in the voltage indicator device. When these detectors are exposed to a high-voltage electric field, they experience an electric field force, which creates a current, or charge buildup.
Convert electrical signal: The current or charge signal generated by the high voltage detector will be converted and amplified by a specific circuit in order to convert the signal from a weak current or charge to a voltage signal that is easier to process.
Comparison and Calibration: The converted voltage signal will be compared with the standard value set in advance. By adjusting the calibration circuit, the accuracy and stability of the device can be ensured.
Display electric field strength: the calibrated and converted signal will be sent to the display screen, and the indicator light, digital display, or pointer instrument on the display screen will display the strength of the high-voltage electric field. Typically, display devices use different colors, brightness, or scales to represent different strength levels of the electric field.
In other words, the high voltage indicator is using the principle of electric field coupling between the high-voltage electric field and the sensor, an inductive (non-contact) sampling display is performed outside the safe distance. There are three sensors, which are respectively connected to the three-phase busbars of A, B, and C that are not in direct contact with the high-voltage electrified body, and a certain safety distance is maintained. It receives the electric field signal of the high-voltage electrified body and transmits it to the working power supply of the display to visually display whether the electrical equipment has operating voltage so that the on-site operation and maintenance personnel can determine whether the line has high voltage. The indicator light on the safety device will show the corresponding color. When there is a high voltage, it usually indicates a red light, and the relevant operating mechanism is forced to lock, and at the same time, the signal is transmitted to the alarm circuit, electromagnetic locking circuit, and microcomputer locking system; if there is no high voltage green light indication, the locking device will be unlocked.
2. Types and features of high voltage indicator
There are two types of high voltage indicators – Q and T, each suitable for different environments and have their own advantages.
Features of high voltage indicator
First, let’s take a look at the applicable environment. The high-voltage live display device is suitable for various high-voltage power equipment, including substations, transmission lines, generator sets, etc. This hv indicator can monitor parameters such as voltage, current, and temperature in real-time when the high-voltage power equipment is running, and intuitively present the information to the operator through the display screen. Whether it is indoor or outdoor, whether it is fixed equipment or mobile equipment, the high-voltage live display device can be competent.
Second, let’s look at the pros. The high voltage indicator has the following advantages. First, it has high-precision measurement capabilities. By adopting advanced sensor and signal processing technology, the high voltage indicator can accurately measure and display various power parameters in real time. This allows operators to quickly understand the operating status of the equipment and take appropriate measures in a timely manner.
Third, the hv potential indicator has reliable performance. This hv indicator adopts advanced circuit design and material technology, which can work stably for a long time under harsh working environments. Not only that, the voltage indicator device also has functions such as waterproof, dustproof, and shock resistance, and can adapt to various complex working scenarios.
Fourth, the high voltage indicator has a user-friendly interface. It adopts an intuitive operation interface and humanized design, enabling operators to use and manage it easily. At the same time, it also supports a variety of communication interfaces and data transmission methods and can be interconnected with other devices to improve work efficiency and comprehensive utilization of data.
3. Application of high voltage indicator
High-voltage charged display devices are widely used in many fields. For example, they are commonly used in areas such as power systems, industrial equipment, laboratory research, and electrical maintenance. By using the high-voltage live display device, engineers and technicians can keep abreast of the voltage of the power system, ensure the normal operation of the power system, and take necessary measures to solve any voltage anomalies or problems.
The high voltage indicator is a prompt safety device installed directly on the indoor electrical equipment to visually show whether the electrical equipment has operating voltage. When the equipment has operating voltage, the display window will flash to warn people that the high-voltage equipment is charged, and there will be no indication when there is no electricity.
This series of voltage indicator devices is widely used in indoor high-voltage electrical equipment of 3.6, 7.2, 12, 24, 40.5kV, and a frequency 50Hz. It can be used together with voltage sensors to reflect the status of high-voltage electrification. It can also be used together with isolating switches and grounding switches. Improve the anti-error performance of supporting products.
In a word, the high voltage indicator is suitable for various high-voltage power equipment and has high-precision measurement capabilities, reliable performance, and a user-friendly interface. It can help operators understand the running status of equipment in real-time, take corresponding measures in time, and improve work efficiency and safety. No matter the environment such as a substation, transmission line, or generator set, the high-voltage live display device is an indispensable device.
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In the first half of 2023, China’s market-based transaction electricity accounted for more than 60% of the total electricity consumption in society.
Liu Gang, deputy director of the Market Supervision Department