Product Introduction
The HL standard current transformer is a standard device specifically designed for error testing and calibration of current transformers (CT). It can be used as a standard current transformer in CT error testing systems, providing a stable and reliable reference standard for the CT under test.
The device features primary and secondary winding structures and is calibrated in accordance with the standard current ratio specified on the nameplate. It also supports 5/5 or 1/1 current ratio self-calibration, allowing users to perform device performance verification and on-site calibration conveniently. The equipment has a compact structure, is easy to operate, and is equipped with casters for convenient mobility and use in both laboratory and on-site testing environments.
Product functions
CT error testing: As a standard current transformer, it provides an accurate reference standard for the CT under test, supporting error testing such as ratio error and phase error.
Standard calibration: Calibrated according to the rated current ratio, providing a reliable reference for CT metrological verification.
Self-calibration function: Supports 5/5 and 1/1 current ratio self-calibration, facilitating device performance verification.
Testing system integration: Can be used together with CT error testing systems, widely applied in power metering, transformer verification, and laboratory testing.
Product Characteristics
1、Dual-Winding Structure: This series of standard current transformers consists of a primary winding and a secondary winding.
2、Calibration Reference: Calibration is performed according to the standard current ratio indicated on the nameplate.
3、Self-Calibration Function: The transformer can perform self-calibration at current ratios of 5/5 or 1/1, enabling convenient verification and adjustment.
4、Easy Mobility: Equipped with casters for convenient handling and movement.
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technische Parameter
| service conditions | Temperatur | -5℃～+40℃ |
| Feuchtigkeit | ＜80% | |
| The workplace should not have strong external electromagnetic fields unrelated to work | ||
| Allow long service at rated current | ||
| Grenzdimension | HL-22/23 | 370*170*440mm3 |
| HL-32/33 | 330*190*430mm3 | |
| HL-53/62/63）/(HL-62C/63C | 470*230*570mm3 | |
| Gewicht | HL-22/23 | 13kg |
Application Scenarios
Power metering laboratories
Used for metrological verification, error testing, and calibration of current transformers (CT), providing a stable and accurate reference standard for laboratory testing.
Transformer manufacturing enterprises
Applied in performance testing, factory testing, and product quality verification during the production of current transformers, helping to ensure products meet relevant testing requirements.
Power systems
Suitable for substations, power metering, and related testing scenarios. Can be used for operational testing, performance verification, and periodic maintenance of current transformers.
Third-party testing organizations
Used as a standard reference device in conjunction with professional CT testing systems for current transformer testing, calibration, and metrological evaluation, meeting professional testing requirements.
CT error testing systems
Can be used as a standard current transformer in CT error testing systems, working together with testing instruments to provide a standard current reference for the CT under test, enabling accurate error testing.
Frequently Asked Questions
Q: What is the HL standard current transformer mainly used for?
A: The HL standard current transformer is mainly used for error testing, metrological verification, and calibration of current transformers (CT). It can serve as a standard reference device in CT testing systems.
Q: What errors can the HL standard current transformer test?
A: The device is mainly used for error testing such as ratio error and phase error of current transformers, providing a stable and accurate reference standard for the CT under test.
Q: Why is the standard current transformer important for CT error testing?
A: The standard current transformer provides a reference standard for the testing system. Its performance directly affects the CT error test results. Therefore, a high-quality standard CT is an important component in ensuring test accuracy.
Q: Can the HL standard current transformer be used together with other testing equipment?
A: Yes. The device can be used together with CT error testers, transformer testing systems, and related power metering equipment to form a complete CT testing solution.
