NEWSnews
SMG2000B: Dual-Channel Phase Meter for Live Circuit Diagnostics
Accurate phase relationship measurement between voltage and current channels is fundamental for power system troubleshooting, protection testing, and energy metering verification. Traditional methods often involve complex setups, multiple instruments, or inconvenient circuit interruption. The SMG2000B Double Clamp Digital Phase Voltmeter addresses these challenges head-on, offering technicians a highly capable, handheld solution optimized for field use.
Core Functionality & Key Advantages:
The SMG2000B excels as a dual-input instrument, simultaneously measuring two AC voltages (U-U), two AC currents (I-I), or voltage and current (U-I) to directly determine their phase angle difference. Its defining advantage lies in non-intrusive measurement across critical ranges:
1.Voltage: 3V to 500V
2.Current: 10mA to 10A (via integrated clamps)
This eliminates the need to break circuits or change ranges within these limits, significantly enhancing safety and efficiency during tasks like:
3.Identifying inductive/capacitive circuits
4.Determining 3-phase voltage rotation
5.Verifying transformer vector groups
6.Testing CT phase relationships in differential protection schemes
7.Checking energy meter wiring correctness
Performance Comparison & Critical Specifications:
Unlike basic multimeters or single-channel phase meters requiring complex setups, the SMG2000B integrates high-resolution measurement and phase analysis into one rugged, user-focused device.
Parameter | SMG2000B Performance | Typical Limitation of Basic Tools |
Phase Measurement | U-U, I-I, U-I; 0-360° (±3°) | Often requires external reference, complex setup |
Voltage Range/Res | 20V (0.01V), 200V (0.1V), 500V (1V) | Lower resolution, limited range, often lower input impedance |
Current Range/Res | 200mA (0.1mA), 2A (1mA), 10A (10mA) | Requires breaking circuit, lower resolution clamps, limited low-current |
Convenience | No break for I<10A/U<500V. Single device for V, I, Φ. | Multiple instruments, range switching, circuit interruption needed |
Display/Ergonomics | High-contrast LCD (25mm digits), 70° swivel screen, logical rotary switch | Smaller displays, fixed angles, complex menus |
Key Technical Highlights:
1.Unmatched Current Sensitivity: Proprietary clamp design achieves industry-leading 0.1mA resolution, crucial for low-current control circuits and precise leakage detection.
2.High-Contrast Rotating Display: Large 25mm digits and a screen that tilts up to 70° ensure clear visibility in bright or awkward field environments.
3.Optimized Field Use: Handheld, intuitive rotary switch operation, and long battery life (with voltage monitoring) enable all-day productivity.
4.Rigorous Accuracy: Meets specified error limits (±1% RD + 2 digits for V/I, ±3° for phase) under reference conditions (23±5°C, 45-75% RH, 50±0.2Hz pure sine waves, signal levels within 100-220V / 0.5A-1.5A for phase).
Conclusion:
The SMG2000B sets a new standard for practical phase analysis in electrical systems. By combining non-intrusive measurement across essential voltage and current ranges, exceptional clamp sensitivity (0.1mA), high accuracy, and a purpose-built ergonomic design, it streamlines complex diagnostic tasks. Technicians working on protection systems, transformer commissioning, energy metering audits, or general power quality will find it significantly enhances speed, safety, and reliability compared to traditional multi-instrument approaches or less capable phase meters. Its focused feature set delivers robust performance where it matters most in the field.
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/
