Ground faults in overhead lines are one of the primary electrical causes of wildfires in forests and grasslands. Fires triggered by electrical faults have already resulted in severe economic and social losses, particularly in densely vegetated and arid regions where fire risks are further amplified. The current from ground faults can range from tens of milliamperes to tens of amperes, depending on factors such as the moisture content and electrolyte composition of trees, and is often accompanied by arcing discharges, significantly increasing fire hazards.
II. Product Highlights: Precise Detection of Weak Fault Currents for Enhanced Fire Prevention
Conventional primary-secondary fusion devices have limited capability to detect fault currents of 0.5A or below, making it difficult to accurately distinguish between fault and non-fault conditions, which can lead to missed or false alarms.
The Forest and Grassland Fire-Resistant Primary-Secondary Fusion Circuit Breaker has been specially optimized for detecting weak ground fault signals:
· High-Precision Current Acquisition: Within a primary current range of 0.3A to 1A, the current acquisition error is controlled to within ±0.02A, significantly improving the ability to identify weak fault currents.
· Rapid Fault Clearance: Fault currents of 0.5A and above can be cleared within 2 seconds of a ground fault occurrence, reducing fire risk by over 90%.
· Typical Comparative Validation: With 0.3A input on Phase A and no current on Phases B and C, the device generates clear waveform recordings and accurate data, verifying its superior low-end current acquisition performance.
· ▲ Conventional primary-secondary fusion breaker unable to detect weak zero-sequence current (waveforms are chaotic, prone to misjudgment)
· ▲ Forest and Grassland Fire-Resistant primary-secondary fusion breaker accurately detects weak zero-sequence current
III. Application Scenarios: Specifically Designed for Forest and Grassland Lines, Also Suitable for Conventional Lines
· Dedicated for Forest and Grassland Distribution Lines: Offers high-precision low-end acquisition of phase and zero-sequence currents, significantly improving the accuracy of single-phase ground fault identification.
· Addressing Industry Challenges: Effectively solves the problems of inaccurate low-end zero-sequence current acquisition and difficulty in distinguishing single-phase ground faults found in traditional primary-secondary fusion pole-mounted switches.
· Broad Applicability: Also suitable for conventional distribution lines in non-forest and grassland settings, meeting diverse application requirements.
