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LBQ-II : A Compact, High-Precision Tool for Electrical Safety Verification
Introduction
Leakage protectors (also known as residual current devices, RCDs) are foundational safety components in low-voltage power distribution systems, designed to mitigate risks of electric shock and electrical fires caused by leakage currents. Their reliable performance—specifically leakage operating current, non-operating current, and response time—directly impacts personnel safety and equipment integrity. Regular, accurate testing of these parameters is therefore critical for compliance with electrical safety standards and proactive maintenance. The LBQ-II Leakage Protector Tester is purpose-built to address this need, offering a portable, user-friendly solution for both on-site and laboratory testing of diverse leakage protectors.
Core Design and Functional Features
Engineered for practicality in both field and lab environments, the LBQ-II tester balances compactness with robust functionality:
Handheld, Portable Form Factor: With dimensions of 195×101×42mm, the device is lightweight and easy to transport, eliminating the need for bulky test setups during on-site inspections. Its ergonomic design ensures comfortable handling during extended testing sessions.
Broad Device Compatibility: The tester supports both single-phase and three-phase leakage protectors, accommodating the full spectrum of devices used in residential, commercial, and industrial power systems.
Automated and Direct Testing Capabilities: It streamlines workflows by automatically measuring leakage operating current and directly recording leakage operating time, reducing manual errors. Additionally, it verifies leakage non-operating current—a key parameter for assessing device stability under normal conditions.
Intuitive Visual Feedback: Equipped with a 16-character blue LCD display, the tester provides clear, real-time readouts of test results, enabling technicians to quickly interpret data without complex post-processing.
Key Technical Specifications
The LBQ-II tester delivers laboratory-grade accuracy in a field-ready package, with specifications aligned to industry testing standards:
Parameter | Details |
Rated Operating Voltage | AC220V / 380V |
Limited Test Voltage | ≤ AC250V (ensures safe operation during testing) |
Leakage Current Range | 0~500mA, with selectable test points (15, 30, 50, 75, 100, 150, 200, 250, 300, 500mA) |
Leakage Current Accuracy | Class 1 (±1% error margin, compliant with precision testing requirements) |
Leakage Operating Time Range | 0~799ms (covers typical response time requirements for most RCDs) |
Operating Time Display Accuracy | 0.5% (±2d) |
Operating Environment | 0°C–40°C, relative humidity <85% (suitable for most indoor and mild outdoor conditions) |
Operational Advantages and Use Cases
The LBQ-II tester addresses critical pain points in leakage protector testing:
On-Site Efficiency: Its portability allows technicians to test RCDs directly at installation points, eliminating the need to remove devices for off-site laboratory testing. This reduces downtime and streamlines maintenance workflows.
Laboratory-Grade Precision: Despite its compact size, the tester meets Class 1 accuracy standards, making it suitable for validating new RCD models, conducting failure analysis, or verifying compliance with regulatory requirements in controlled lab environments.
Simplified Compliance Workflows: By automating key tests and providing clear, actionable data, the LBQ-II helps technicians document RCD performance efficiently, supporting audits and safety compliance reporting.
Common applications include routine maintenance of building electrical systems, post-installation verification of new leakage protectors, and quality control testing for RCD manufacturers.
Conclusion
The LBQ-II Leakage Protector Tester is a versatile, high-performance tool tailored to the needs of electrical safety professionals. Its unique combination of portability, broad compatibility, and laboratory-grade accuracy makes it an ideal choice for both on-site inspections and laboratory validation. By simplifying the verification of leakage protector performance, the LBQ-II supports proactive maintenance, reduces safety risks, and ensures compliance with electrical safety standards across diverse power distribution systems.
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/
