Prepayment Meter Current Transformers Factory

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Haiyan Weijia Electric Technology Co., Ltd is a professional China Prepayment Meter Current Transformers Manufacturers and Prepayment Meter Current Transformers factory, covers an area of 13 acres, with a total construction area of about 12,000 square meters and more than 200 employees. The company mainly produces in-meter accessories such as current transformers, manganese-copper shunts ,wholesale Prepayment Meter Current Transformers and magnetic holding relays. The transformer production capacity is 80,000 per day, shunts are 50,000 per day, and 20,000 relays per day. The company invests millions of dollars each year in equipment upgrades, production process improvements and new product development. Currently has dozens of technical patents, enterprise management passed ISO9001 certification, relays and transformers obtained CE EU certification.
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What Is the Current Transformer?

A current transformer (CT) is a device that steps down a high current in an alternating current circuit to a lower, safer level. CTs are commonly used in metering applications and ...

Choosing the Right Three Phase Meter Current Transformer

A three phase meter current transformer is used to convert a primary current to a secondary current. They can be found in various shapes and sizes, and have a wide range of amperag...

Shunt-Based Energy Meters

In the energy meter industry, many meters use shunts as current sensors. This is mostly because they cost less than other types of current sensors and provide magnetic immunity tha...

What is a Shunt and Why is it Used in a Prepayment Meter?

When it comes to energy bills, one of the key components is your energy meter. It shows how much electricity and gas you're using each month and allows you to top up by text, app o...

Industry knowledge about Transformer

A current transformer (CT) is a type of electrical transformer that is used to measure alternating current (AC) in an electrical power system. CTs are typically used to provide a reduced current signal to a metering or protective devices, such as an ammeter, relay, or control system.
The CT consists of a primary winding that is connected in series with the electrical conductor carrying the current to be measured, and a secondary winding that provides a reduced current output. The ratio of the primary winding to the secondary winding is referred to as the current transformation ratio (CTR), and it determines the magnitude of the reduced current output.
The CT is designed to be highly accurate and linear so that the reduced current output is proportional to the current in the primary winding. This enables the CT to provide accurate readings of the current in the electrical power system, even when the current is changing rapidly.
CTs are commonly used in a variety of applications, including electric power metering, protection of electrical equipment, and measurement of electrical power in renewable energy systems. They are available in a variety of configurations, including split-core, window-type, and toroidal CTs, to suit different installation requirements.

Features of a current transformer:

High accuracy: Current transformers are designed to provide highly accurate current measurements, which is critical for maintaining the stability and reliability of power systems.
Wide measurement range: Current transformers are available with a wide measurement range, allowing them to be used for a variety of applications, from low-current to high-current systems.
Isolation: Current transformers are designed to provide electrical isolation between the primary and secondary circuits, which enhances safety and reduces the risk of electrical shock.
Robust construction: Current transformers are typically constructed from high-quality materials, such as aluminum or other metals, which provide durability and long-lasting performance.
Compact size: Many current transformers are designed to be compact, making them easy to install and use in a variety of applications, from industrial power systems to residential electrical systems.
Easy installation: Many current transformers are designed for easy installation and can be integrated into existing power systems without the need for major modifications or upgrades.

Types of current transformers:

Window-Type CTs: These CTs have a split-core design, allowing them to be easily installed around an existing conductor.
Bar-Type CTs: These CTs have a cylindrical shape and are typically used in low-current applications.
Rogowski CTs: These CTs have a flexible coil that can wrap around a conductor, making them well-suited for measuring current in irregularly-shaped conductors.
Wound CTs: These CTs have a primary and secondary winding that are wound onto a core, making them well-suited for high-current applications.
Split-Core CTs: These CTs have a split core that can be opened and closed, allowing them to be easily installed around an existing conductor.
Toroidal CTs: These CTs have a toroidal core, which provides high accuracy and low magnetic leakage.
Burden CTs: These CTs are designed to be used with a specific burden, or load, to provide accurate current measurements.