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Performance and Precision of the LBQ-III Analyzer
Introduction:
Accurate verification of Residual Current Devices (RCDs) or Leakage Protectors is paramount for electrical safety. While basic testers exist, professionals demand precision, versatility, and efficiency. The LBQ-III Leakage Protector Tester emerges as a sophisticated handheld solution, significantly advancing capabilities beyond rudimentary tools.
Core Capabilities of the LBQ-III:
Designed for both field and laboratory use, the LBQ-III excels in directly measuring three critical RCD parameters:
Leakage Operating Current: The precise current level triggering the RCD to trip.
Leakage Non-Operating Current: Verifies the RCD holds reliably below its trip threshold.
Leakage Operating Time: Measures the trip duration in milliseconds once the operating current is reached.
Featuring a clear 16-character blue LCD, results are presented intuitively. Its compact dimensions (195×101×42mm) and lightweight design make it exceptionally portable.
Technical Superiority - Key Specifications:
Voltage Compatibility: Rated for AC 220V & 380V systems (test voltage limited to ≤250V AC).
Precise Leakage Current Testing: Selectable test points (30, 50, 75, 100, 150, 200, 250, 300, 500, 1000mA) with Class 1 accuracy.
High-Resolution Timing: Measures trip times from 0 to 799ms with high accuracy (±0.5% ±2 digits).
Robust Operation: Functions reliably within 0°C to 40°C and relative humidity below 85%.
Universal Application: Tests both single-phase and three-phase leakage protectors of various types.
Contrast with Conventional Methods:
The LBQ-III offers distinct advantages over simpler approaches:
Testing Aspect | Basic Testers / Manual Methods | LBQ-III Leakage Protector Tester |
Leakage Current (IΔn) Test | Often only verifies trip at nominal rating; no precise measurement. | Auto-Test Function: Accurately measures the actual operating current across a wide range (30-1000mA), Class 1 accuracy. |
Trip Time (TΔ) Test | May require external timers or estimation; prone to error. | Direct Measurement: Precisely measures trip time (0-799ms) with ±0.5% accuracy. |
Non-Operating Current | Rarely tested on-site; complex setup required. | Integrated capability to verify RCD holds below trip threshold. |
Versatility | Often limited to specific voltage or RCD type. | Handles both single-phase (220V) and three-phase (380V) systems. |
Data Presentation | Minimal indication (e.g., LED trip), no numerical data. | Clear 16-character Blue LCD provides direct numerical readouts (mA, ms). |
Portability & Ease | Simpler tools are portable but lack features. Complex bench setups are immobile. | Handheld: Combines full lab-grade capabilities in a compact, field-ready unit. |
Key Advantages for Technicians:
Enhanced Accuracy & Reliability: Class 1 leakage current accuracy and high-resolution timing provide confidence in compliance testing (e.g., IEC 61009, IEC 61008) and performance verification.
Operational Efficiency: The auto-test function for operating current and direct time measurement drastically reduce testing time and complexity compared to manual procedures.
Safety: Built-in voltage limitation (≤250V) and clear design prioritize user safety during live testing.
Comprehensive Diagnosis: Measuring actual operating current and time, not just pass/fail at nominal values, offers deeper insight into RCD health and performance margins.
True Portability: Lab-grade performance is now available at the point of need – switchboards, construction sites, industrial plants.
Conclusion:
The LBQ-III Leakage Protector Tester represents a significant leap forward for electrical professionals. Its ability to deliver highly accurate measurements of critical RCD parameters (IΔn, TΔ, non-operating current) across both single and three-phase systems, combined with its handheld convenience and intuitive display, makes it an indispensable tool. It effectively replaces less capable testers and cumbersome manual methods, ensuring efficient, reliable, and comprehensive verification of earth leakage protection – a cornerstone of electrical safety programs. For technicians requiring precision beyond basic trip verification, the LBQ-III sets the standard.
GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/
