Micro current transformer is a miniaturized current transformer widely used in power systems, power quality monitoring, power instruments and other fields. Its main features include high precision, low cost, easy installation, and high reliability.
Power Quality, in a general sense, refers to high-quality power supply, including voltage quality, current quality, power supply quality and power quality.
The structure of a digital meter mainly consists of the following parts:
Measurement line: It is the basis of digital meters, which is used to convert physical quantities to be measured (such as voltage, current, etc.) into electrical signals.
The main difference between a power meter and an energy meter lies in their measurement principles, usage scenarios, and displayed values...
Micro current transformers are usually used in conjunction with circuit breakers.
Circuit breakers are used to disconnect or connect circuits, while micro current transformers are used to measure the current in circuits. The combination of the two can ensure the safe operation of the circuit and guarantee accurate and reliable measurement results....
Low-voltage current transformer is a device that can convert high AC current into easily controllable low current with excellent performance and stable accuracy...
Miniature transformers are divided into Miniature current transformers (including Miniature current converters) and Miniature voltage transformers. It is a equipment in the power. electrical industry, generally used in various power/electrical instruments for measurement and protection. Compared with the ordinary transformer, the Miniature transformer has the characteristics of smaller volume (can be the size of the nail)...
Ethernet power meter is a meter used to measure and monitor power consumption of network devices, and is usually used in Power over Ethernet (PoE) systems. The main functions of Ethernet power meter include measuring the consumed power, voltage and current of the device, helping users learn about the energy consumption of the device, to manage and optimize energy efficiency...
The Rogowski coil is mainly composed of a coil, an iron core, and a power supply. These three parts work together to achieve the induction and amplification of electromagnetic signals. The coil is the core component of the Rogowski coil...
A Rogowski coil is a device that measures current by creating an electromagnetic field around a wire. It consists of multiple spiral coils that work according to Ampere's law and Faraday's law of electromagnetic induction. Rogowski coils are widely used in electronic instruments, power systems, communication equipment and industrial automation, and are precise and reliable...
CT PT characteristic comprehensive tester is a fully automated PT, CT characteristic test instrument, the instrument can complete the test includes: CT voltammetry characteristic test, PT voltammetry characteristic test, CT polarity test, PT polarity test, CT variable ratio polarity test and PT variable ratio polarity test, automatically calculate the arbitrary point error curve of CT, CT/PT variable ratio difference and other result parameters...
1、CT secondary load
During the CT secondary load measurement, please connect the CT PT analyzer to the measured CT according to Figure 3.1
LZCK-55 outdoor split core current transformer is a specially designed current measurement equipment for outdoor environments, with good waterproof performance and easy on-site installation. Here are some key characteristics and application scenarios of outdoor split core current transformers:...
The on-site verification of energy meter errors is to ensure the accuracy and reliability of the meter, which is very important for both electricity power utilities and users. The following are some reasons for conducting on-site calibration of electricity meter errors:...
The split-core current transformer is a type of power measuring instrument used to measure current in high voltage power systems. Its function is to convert the high current in the power system into a smaller current to ensure the safety, reliability, and accuracy of the meter. The main functions of the split-core current transformer include:...
The split-core current transformer has a wide range of applications in power systems, mainly including the following aspects:...
The monitoring system for 10KV and 35KV transformers mainly consists of sensors, data collectors, data processing and analysis software, and other components...
Performing regular insulation preventive tests on electrical equipment helps to promptly identify any local defects in the insulation material of the equipment or defects generated during operation. This facilitates understanding the operating condition of the electrical equipment and the integrity of its insulation, determining whether the electrical equipment can continue to operate and prevent damage, thus maintaining a high insulation level for the equipment...
The transformer ratio is one of the most important parameters of transformer, it usually references the winding ratio between input coils and output coils. The transformer ratio testing is an important way to judges whether the transformer accords with the design parameters or not. The basic method is according to measures the ratio between input voltage and output voltage of transformer to identify the changes...
Ⅰ. The definition of turns ratio
turns ratio is the ratio between secondary side voltage and primary side voltage. Turns ratio actually is the ratio between input voltage and output voltage in DC rectifier transformers....
The GF112D single-phase energy meter field calibrator is powered by an internal lithium battery. Under the intelligent management of the CPU, internal circuit will switch at power on/off state intelligently to reduce power consumption. Manufacturer of single-phase...
Power quality refers to the quality of AC power supplied to users by the public power grid, caused by terminal loads. Power electronics technology has a positive impact on energy conservation and...
Definition: Energy Meter calibration refers to the process of verifying the measurement accuracy and working status of the Energy Meter through the actual test...
Many soft magnetic materials can be used as transformer cores, but their usage is not entirely the same, and the resulting transformer performance also varies. There are several main differences...
According to the above analysis, it can be seen that the error of current transformers is mainly determined by the magnitude of excitation current, and in order to improve the accuracy performance of current transformers...
Precautions for using split core current transformers: The following points must be noted during use...
Current transformers are widely used in measurement and relay protection in factory power supply systems. There are various ways to connect current transformers, which are applied to relay protection in different power supply systems...
1) Current transformer (or measuring winding of current transformer): provides grid current information to measuring and metering devices within the normal voltage range...
AC current clamp can be regarded as a derivative application of current transformer. The transformer works by winding two coils around an iron core on either side (As shown in Figure 1). When current I1 passes through coil C1, coil C2 generates current I2. The relationship between coil turns and current is: N1*I1=N2*I2.N1 and N2 indicate the number of turns of the coil...
The Test-330B three phase secondary current injection test set is the first choice for applications requiring very high accuracy more than 0.1%.
This unit is not only an excellent test set for protection devices of all kinds but also a universal calibrator. It can as a ac or dc current source and voltage...