LZZBW-11 Outdoor Current Transformer (CT) – 1600/1A High-Precision 0.5 Class Instrument Transformer for Substation Switchgear
The LZZBW-11 Outdoor Current Transformer is a high-performance instrument transformer engineered for accurate current measurement and reliable protection in high-voltage power systems. Designed for durability in outdoor substation environments, it provides critical data for switchgear monitoring and distribution network safety. With its 0.5 class precision rating and a current ratio of 1600/1A, this CT offers exceptional short-time withstand capability and dynamic stability. Its robust casting and weather-resistant design ensure operational safety and a long service life even under harsh environmental conditions.
Key Features
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High Accuracy & Reliability: Meets precise measurement requirements with a 0.5 class accuracy at 120% rating, ideal for 1S1-1S2 and 2S1-2S2 configurations.
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Strong Short-Time Thermal Capacity: Engineered to handle a short-time thermal current ($I_{th}$) of up to 40kA for 1 second.
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Excellent Dynamic Stability: Features superior mechanical strength with a dynamic current ($I_{dyn}$) withstand of up to 100kA.
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Durable Outdoor Design: Specifically constructed with weather-resistant insulation and a robust housing to withstand outdoor environmental stresses.
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Standardized Current Ratio: Optimized for high-load industrial and utility monitoring with a 1600/1A rated primary and secondary current.
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Safety & Low Maintenance: Built with high-quality materials to significantly reduce operational risks and simplify long-term maintenance cycles.
Technical Specifications
| Parameter | Value |
| Model | LZZBW-11 |
| Rated Primary Current | 1600 A |
| Rated Secondary Current | 1 A |
| Short-Time Thermal Current ($I_{th}$) | 40 kA / 1s |
| Dynamic Current ($I_{dyn}$) | 100 kA |
| Measurement Accuracy | 0.5 class at 120%; 20VA burden |
| Insulation Level | Outdoor rated |
| Installation Site | Outdoor; suitable for switchgear and substations |
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