1P18U1H/6

1P18U1H/6 is an electronic instrument used for voltage level measurement and protection. Its wide range of applications include low-voltage networks, power transmission lines and current transformers, as well as other related fields. Its working principle is based on the principle of block voltage measurement, which involves measuring the voltage difference between two points of the same circuit. The instrument consists of three main components: the measuring unit, the protective unit and the control circuit.

Application Field

The 1P18U1H/6 can be used in many areas, such as:

• Low voltage networks – such as telecommunication, telecom and other associated systems;
• Power transmission lines – for providing electrical power to homes, businesses and other places;
• Automation systems – for controlling automated machinery and production lines.
• Read the meter – for measuring electricity, gas and water consumption;
• Current transformers – for measuring the intensity of electric currents.

The instrument is also widely used in explosion proof environment, such as mines, chemical plants and other places, due to its IP67 waterproof grade.

Working Principle

The 1P18U1H/6 instrument works based on the principle of block voltage measurement, which involves measuring the voltage difference between two points of the same circuit. The instrument has an electromechanical working principle and is constructed using an insulation-covered sensing tube, an electrical shield and an adjustable armature. To measure, an adjustable armature with a movable plate is placed and connected between two points of a circuit. When voltage is applied, the armature gets attracted to the metallic plate, forming a connection. This movement of the armature is measured by sensors that are connected to the shield.

The instrument\'s operational voltage range is from 6V to 1,200V and the resistivity of the voltage applied is measured accurately. Furthermore, the instrument has a very short response time, which ensures that it can reach the final results in less than two milliseconds.

The instrument also has a number of safety features, such as the overvoltage protection which is designed to protect the instrument from damage due to overvoltage. Additionally, the armature, plate and shield are coated with special materials that make them resistant to oxidation.

The 1P18U1H/6 instrument is a reliable and accurate tool for measuring and protecting against high voltage levels in various applications, making it a popular choice in the electrical engineering industry.