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The LZZB9-24-180b High Voltage Current Transformer is engineered for indoor applications in power systems operating at a rated frequency of 50Hz or 60Hz and a rated voltage of 20kV. This transformer is an excellent solution for energy measurement, current measurement, and protection in electrical networks.
Key Features
- Superior Insulation: Features a fully enclosed structure cast with epoxy resin, providing outstanding insulation properties and moisture-proof capabilities.
- Compact Design: Small in size and lightweight, making it easy to install and maintain.
- Easy Maintenance: Designed with a surface that is simple to clean.
- Safety First: Equipped with a terminal box for secure and reliable secondary outlet connections.
- Robust Installation: Includes grounding bolts and six mounting holes on the bottom plate for stable and straightforward installation.
Environmental Conditions
- Installation Location: Indoors
- Temperature Range: Operates effectively between -5℃ (minimum) and 40℃ (maximum), with a daily average not exceeding 30℃.
- Atmospheric Requirements: Must be installed in an environment free from serious pollution.
Technical Specifications
- Model: LZZB9-24-180B-4
- Rated Frequency: 50Hz or 60Hz
- Rated Voltage: 20kV
- Rated Secondary Current: Available in 5A or 1A options
- Accuracy Class Combinations and Burdens:
- 0.2/0.2/0.2: 10/10/10 VA
- 0.2/0.5/0.5: 10/10/10 VA
- 0.2/10P10/10P10: 10/15/15 VA
- 0.5/10P10/10P10: 10/15/15 VA
- 0.2/10P15/10P15: 10/10/15 VA
- 0.5/10P15/10P15: 10/10/15 VA
- Rated Insulation Level: 12/42/75 kV
Performance Data
The table below outlines the rated primary current along with the corresponding short time thermal current and dynamically stable current for the LZZB9-24-180B-4 model:
| Rated Primary Current (A) | Short Time Thermal Current (kA/s) | Dynamically Stable Current (kA/s) |
|---|---|---|
| 20 | 3 | 7.5 |
| 30 | 4.5 | 11.25 |
| 40 | 6 | 15 |
| 50 | 7.5 | 18.75 |
| 75 | 11.25 | 28.125 |
| 100 | 15 | 37.5 |
| 150 | 22.5 | 56.25 |
| 200 | 31.5 | 80 |
| 300 | 45 | 112.5 |
| 400 | 45 | 112.5 |
| 500 | 45 | 112.5 |
| 600 | 63 | 130 |
| 800 | 63 | 130 |
| 1000 | 80 | 160 |
| 1200 | 80 | 160 |
| 1250 | 80 | 160 |
Applications
The LZZB9-24-180b High Voltage Current Transformer is a versatile and reliable choice for modern power systems requiring precise energy and current measurement, as well as robust protection. Its flexible configuration options—such as selectable secondary currents and a range of accuracy classes—make it suitable for a wide variety of indoor electrical applications.
