Current Transformers are vital components in electrical engineering, enabling accurate current measurement and system protection. The LZZBJ9-10A1 Current Transformer is a standout indoor model, featuring epoxy resin casting insulation. Designed for electrical systems with rated voltages of 12kV, 24kV, or 40.5kV and frequencies of 50Hz or 60Hz, this transformer excels in measuring current, monitoring electric energy, and providing relay protection. Below, we explore its features, specifications, and benefits, optimized for clarity and search engine visibility with the core keyword “Current Transformers”.
A Current Transformer (CT) reduces high electrical currents to manageable levels for measurement and safety. Available in outdoor and indoor variants, indoor models like the LZZBJ9-10A1 use epoxy resin insulation for durability and performance. This transformer is widely applied in medium-voltage systems for:
- Current Measurement: Precise tracking of electrical flow.
- Energy Monitoring: Accurate energy usage data.
- Relay Protection: Safeguarding equipment from faults.
The LZZBJ9-10A1 is tailored for indoor environments, offering a compact, reliable solution for modern electrical setups.
Operation Conditions
To ensure optimal performance, the LZZBJ9-10A1 Current Transformer operates under specific conditions:
- Rated Insulation Level: 12/42/75kV
- Rated Secondary Current: 5A or 1A
- Power Frequency Withstand Voltage: 12kV
- Rated Frequency: 50Hz or 60Hz
- Ambient Temperature: -5°C to +40°C
- Altitude: ≤1000m
- Standard: IEC 60044-1
These parameters make it suitable for a variety of indoor applications, ensuring safety and efficiency.
The LZZBJ9-10A1 offers robust technical specifications, supporting diverse current ratios and accuracy classes. Below is a detailed breakdown:
| Rated Current Ratio (A) | Accuracy Classes Combination | Rated Output (VA) | FS | ALF | 1s Short-Time Thermal Current (kA) | Rated Dynamic Current (kA) |
|---|
| 10-200/5 | 0.2(s)/0.2(s), 0.2(s)/0.5, 0.2(s)/10P, etc. | 10, 15 | 5 (10) | 10, 15, 20 | 150I1n | 375I1n |
| 300/5 | | | | | 31.5 | 80 |
| 400/5 | | | | | 31.5 | 80 |
| 500/5 | | | | | 40 | 100 |
| 600/5 | | | | | 50 | 125 |
| 800/5 | | 20 | | | 63 | 125 |
| 1000/5 | | | | | 80 | 160 |
| 1200-1500/5 | | | | | 80 | 160 |
| 1500-2000/5 | | | | | 100 | 160 |
| 2000-3150/5 | | | | | 130 | 160 |
Key Terms Explained
- Accuracy Classes: Indicate measurement precision (e.g., 0.2(s) for metering, 10P for protection).
- Rated Output (VA): Power delivered to connected instruments.
- FS (Factor of Safety): Limits secondary current under fault conditions.
- ALF (Accuracy Limit Factor): Defines protection accuracy during high currents.
This versatility ensures the LZZBJ9-10A1 meets both metering and protection needs effectively.
The LZZBJ9-10A1 offers distinct advantages:
- Epoxy Resin Insulation: Enhances durability and resistance to environmental factors.
- High Precision: Multiple accuracy classes for reliable performance.
- Compact Design: Ideal for indoor installations with limited space.
- Standards Compliance: Meets IEC 60044-1 for quality assurance.
These features position it as a top-tier option among Current Transformers for medium-voltage applications.
Current Transformers like the LZZBJ9-10A1 are critical in:
- Power Distribution: Ensuring accurate billing and system monitoring.
- Industrial Settings: Protecting machinery from overcurrents.
- Energy Management: Optimizing electricity usage.
Its adaptability makes it a valuable asset across industries.
Installation Tips
For best results:
- Install in a dry, indoor environment.
- Maintain ambient temperatures between -5°C and +40°C.
- Keep altitude below 1000m.
- Avoid dust or corrosive gases.
Proper installation maximizes the longevity and efficiency of this Current Transformer.
The LZZBJ9-10A1 Current Transformer combines precision, durability, and versatility, making it an excellent choice for electrical systems up to 40.5kV. Whether for current measurement, energy monitoring, or relay protection, this indoor transformer delivers consistent performance.
Interested in enhancing your system with top-quality Current Transformers? Contact us for more details on the LZZBJ9-10A1 today!
