The SMG2000E: Field-Ready Precision in Dual-Channel Phase Measurement

The SMG2000E: Field-Ready Precision in Dual-Channel Phase Measurement

For electrical technicians and engineers, accurately measuring phase relationships (U-U, I-I, U-I) is fundamental across diverse tasks: verifying power factor correction, checking transformer connections, validating protective relay schemes (like bus differentials), commissioning CTs for differential protection, and troubleshooting energy meter wiring. Traditional methods often involve complex setups, potential safety hazards from intrusive connections, or limited functionality. The SMG2000E Double Clamp Digital Phase Meter addresses these challenges directly, offering a compelling blend of safety, convenience, and accuracy in a handheld device.

Core Advantages & Key Differentiators

1.Unmatched Safety & Non-Intrusive Operation (vs. Traditional Test Sets): The defining feature is its dual insulated clamp design. This allows simultaneous measurement of voltage (via test leads) and current (via clamps) or two currents without ever breaking the circuit. This eliminates the critical risk of accidental short circuits inherent when connecting traditional phase meters in-line, significantly enhancing technician safety during live testing.

2.True Dual-Channel Input & Wide Operating Range: Unlike single-input devices requiring sequential measurements and calculations, the SMG2000E directly measures phase angles between its two isolated channels (U1-U2, U1-I2, I1-I2, I1-I2). It operates seamlessly across broad ranges (3V-500V AC, 10mA-10A AC) without needing to change physical settings during most common measurements.

3.Engineered for the Field: Its handheld form factor, optimized low-power design (with battery level indication), and high-contrast LCD (tiltable up to 70°) make it robust and practical for demanding site conditions. The intuitive rotary switch simplifies operation – select the function and read the result.

4.High Resolution: Utilizing a patented current clamp, it achieves an exceptional 0.1mA current resolution and 0.1V voltage resolution, enabling precise measurements even at lower signal levels often encountered in control circuits or CT secondary sides.

Technical Specifications Summary

1.Voltage Measurement:

Ranges: 20V (0.01V res), 200V (0.1V res), 500V (1V res)

Accuracy: ±(0.5% of reading + 0.2% of range) across all ranges

Input Impedance: 2MΩ (>500kΩ during phase meas.)

2.Current Measurement (Clamp):

Ranges: 200mA (0.1mA res), 2A (1mA res), 10A (10mA res)

Accuracy: ±(0.5% of reading + 0.2% of range)

3.Phase Measurement:

Range: 0° to 360°

Resolution: 1°

Accuracy: ±2° (under reference conditions)

4.Reference Conditions: 23±5°C, 45-75% RH, 50±0.2Hz pure sine wave, signal levels within 100-220V / 0.5A-1.5A for phase accuracy.

Targeted Applications

The SMG2000E excels in numerous critical electrical tasks:

1.Phase Angle Measurement: U-U, I-I, U-I for power analysis.

2.Load Characterization: Determining inductive/capacitive nature of circuits.

3.Phase Sequence Verification: Confirming L1-L2-L3 rotation in 3-phase systems.

4.Transformer Diagnostics: Checking vector group (connection) correctness.

5.Protection System Commissioning & Testing: Validating CT phase relationships for busbar differential protection and other relay schemes; verifying wiring in complex secondary circuits.

6.Energy Meter Auditing: Checking correct wiring and phase relationships for revenue metering.

7.General Circuit Analysis: Troubleshooting motor circuits, capacitor banks, etc.

Conclusion: A Practical Tool for Enhanced Safety and Efficiency

The SMG2000E Double Clamp Digital Phase Meter stands out by prioritizing technician safety through its non-intrusive, dual-insulated clamp design – a significant advantage over traditional phase meters requiring circuit interruption. Its combination of true dual-channel phase measurement, wide operating ranges without switching, high resolution, robust field-ready construction, and clear interface delivers exceptional practicality. For technicians performing phase analysis, protection testing, metering audits, or general troubleshooting on live systems up to 500V/10A, the SMG2000E offers a reliable, safe, and efficient solution that directly addresses the limitations of older testing methodologies.

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/