What are the main application areas of DP current transformers?

Mar 26, 2026 Leave a message

The main differences between DP Current Transformer (which stands for Separate/ Open Design) and ordinary Current Transformer are installation method, structural adaptability and application scenarios:

 

1.Installation convenience:

  • The DP series adopts a separated core design and can be installed directly without disconnecting the circuit or removing the cable. It is suitable for updating old equipment or in situations where space is limited; ordinary current transformers usually require to be cable insertion or fixed installations, and circuit breaks are required to operate.

 

2.Structural flexibility:

  • The DP series offers a wide range of open specifications that are compatible with circular cables and rectangular busbars and support live running; common current transformers are mostly enclosed structures with higher cable size and installation environment requirements.

 

3.Application scenarios:

  • Due to its ease of installation, the DP series is better suited to scenarios that require rapid deployment, such as distributor box renovation and industrial motor monitoring. Ordinary current transformers are widely used in power generation and transmission and require high accuracy and stability.

NEW DP Current Transformers

Comparison of technical Features

 

  • Measurement Principle Both systems are based on electromagnetic induction, which converts a high current at the primary end into a standard low current at the secondary end (e.g., 5A or 1A). However, the DP series reduces the impact of installation on measurement accuracy by optimizing magnetic circuit design. Precision and Load DP series and common current transformers both offer high precision (e.g., Class 0.2, Class 0.5) and protection (e.g., 5P, 10P) products. However, the DP series needs to pay particular attention to the effects of the separated structure on magnetic saturation and load capacity. Environmental Adaptability DP series shell is made of UV resistant material, which is suitable for outdoor environment. Ordinary current transformer meets different protection requirements by casting or sealing design.

 

FAQs and Answers


Q1: Can DP Current Transformers replace ordinary current transformers?
A1: Ordinary current transformers can be more cost-effective if the installation environment allows for cable penetration or fixed installation without the need for live electricity; the DP series is better suited to situations requiring quick refurbishment or limited space.

 

Q2: Does the accuracy of DP Current Transformer depend on the method of installation?
A: A separate design may increase resistance, but by optimizing magnetic circuits and materials (such as high magnetic permeability cores), the DP series can achieve the same accuracy as conventional current transformers.

 

Q3: How to select DP or common current transformer?
A: Scenario-based: If you need to install while electrified, compatible with various cable specifications, or for a quick renovation, opt for the DP Series. If you prioritize cost-effectiveness or have no specific requirements for the installation environment, a regular current transformer is more appropriate.

 

Q4: Does DP Current Transformer support custom requirements?
A: Some manufacturers (such as Liqiong City HuaWei Transformer Factory) offer custom services for the DP series, which can be adjusted for starting rate, transformation ratio or accuracy rating depending on the specific application.

 

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