GF211D Dual Clamp Tester Shows Stable 60° Phase Angle Measuring Result

 This hands-on demo fully displays how the GF211D portable phase meter captures accurate 60° phase difference with straightforward operation. No complicated calibration is required before measurement; just connect voltage cables or attach dual current clamps onto energized wires to acquire phase, power factor and frequency simultaneously. Its lightweight 0.45kg body is easy to carry between workshops and substations, and the anti-glare color screen clearly presents 60° vector graphs even under strong lighting. Beyond single 60° phase testing, the instrument covers the full 0–360° phase spectrum to identify inductive and capacitive load characteristics, check three-phase sequence and detect tiny leakage currents with ultra-fine 0.1mA resolution. The matched portable storage case protects all probes and the main unit during frequent outdoor transportation.

Browse detailed parameter lists and more test case videos via the link below:

https://www.gfuvegroup.com/protection-relay-tester/600v-20a-intellignet-digital-phase-angle-meter.html

#PortablePhaseMeter #60PhaseMeasurement #PowerMaintenanceDevice #DualChannelTester #GFUVEInstrument

Intelligent Digital Phase Angle Meter

DC Test Function Operation of TEST-630 Microcomputer Protection Relay Tester

 DC test function enables the GFUVE TEST-630 to output adjustable DC voltage and current for testing DC protection relays, tripping circuits and auxiliary power loops. It serves as an essential supplement to AC secondary injection testing for power system commissioning.

Thanks to its independent DC output channels, the tester supports precise regulation of DC voltage and current magnitude. Operators set parameters conveniently via front panel buttons to simulate DC control signals, DC short circuits and abnormal DC power supply conditions for protection devices.

Cooperating with built-in binary input channels, the tester monitors relay pickup and dropout actions in real time. It accurately measures DC operating thresholds and verifies the reliability of relay DC control circuits, trip coils and blocking logic.

This function is widely used in substation on-site commissioning, relay cabinet inspection and laboratory type tests. It ensures reliable operation of DC control and protection loops and eliminates hidden risks in DC auxiliary circuits.

Website：https://www.gfuvegroup.com/protection-relay-tester/six-phase-microcomputer-protection-relay-tester.html

#GFUVE #TEST630 #DCTest #SixPhaseRelayTester #DCRelayTest #TripCircuitTest #SecondaryInjection #PowerGridCommissioning

TEST-330B | Frequency protection | Three Phase Relay Tester

Explore the frequency protection testing capability of the TEST-330B Three Phase Secondary Current Injection Test Set and see how it supports reliable relay verification in modern power systems.

This demonstration shows how TEST-330B performs frequency protection testing by providing controlled test conditions to evaluate relay response, verify protection settings, and improve the accuracy of commissioning procedures.

Designed as a professional three-phase relay testing platform, TEST-330B helps engineers, utilities, and maintenance teams efficiently test protection functions across substations and industrial electrical networks.

Discover reliable frequency protection testing with TEST-330B — a practical solution for professional relay testing applications.

Product Details:

https://www.gfuvegroup.com/protection-relay-tester/three-phase-secondary-current-injection-test-set.html

#TEST330B #FrequencyProtection #ThreePhaseRelayTester #RelayTesting #ProtectionRelayTesting #SecondaryInjectionTest #PowerSystemTesting #ElectricalTesting #SubstationTesting #RelayProtection #PowerEngineering #TestEquipment

GF106 | CT DC Resistance Test

Check the winding condition of a current transformer with the GFUVE GF106 CT & PT Analyzer.

In this demonstration, GF106 performs a CT DC resistance test by applying a controlled DC test current to the transformer winding and measuring its resistance value.

The measurement helps technicians assess winding condition and identify potential issues such as abnormal resistance values, connection problems, or winding inconsistencies.

With a straightforward test procedure and clear measurement display, GF106 is well suited for CT commissioning, inspection, maintenance, and field testing.

Discover more about GF106:

https://www.gfuvegroup.com/ct-pt-analyzer/ct-test-equipment-with-knee-point.html

#GF106 #CTDCResistance #CTResistanceTest #CurrentTransformer #CTTesting #CTAnalyzer #WindingResistance #DCTest #TransformerTesting #ElectricalTesting #CTMaintenance #SubstationTesting #FieldTesting #PowerEngineering #GFUVE

GF333V2 Reference Meter – Demonstration of Harmonic Measurement Deviation

 The GF333V2 delivers intuitive harmonic error display for professional calibration work. It can separately display the error of each harmonic order and match with real-time waveform graphs for cross-reference. Equipped with data storage function, it records harmonic error results throughout the test cycle for later review and report generation. With excellent stability and full-range adaptability, it meets the strict harmonic calibration requirements of laboratories and power-related enterprises.

For full product specifications and usage details, please visit our official website: https://www.gfuvegroup.com/power-&-energy-reference-standard/three-phase-multifunction-reference-standard-meter.html

#GF333V2 #HarmonicErrorAnalysis #WaveformDisplay #LabCalibrator #ElectricalTestTool

GF6018A Calibrate Resistance Ranges of 117C Multimeter

 GF6018A provides multiple groups of accurate standard resistance outputs to complete full-range calibration for all resistance gears on the 117C multimeter. Its precise resistance reference values can accurately check measurement errors and linear performance of the ohm channel of 117C, helping technicians judge whether the multimeter meets qualified standards. With stable signal output and simple operation steps, it greatly improves calibration efficiency for instrument factories, metrology rooms and maintenance workshops.

Product link: https://www.gfuvegroup.com/electrical-calibrator/clamp-type-multimeter-calibrator.html

#GF6018A #117CMultimeter #ResistanceCalibration #OhmRangeTest #MultimeterCalibrator

GF438II Waveform Recording – 200kHz High-Speed Transient Wave Capture

 The GF438II handheld power quality analyzer integrates a 200kHz ultra-high-speed synchronous sampling module across all 4 voltage and 4 current channels, enabling full-cycle transient waveform recording for all three phases and neutral line simultaneously without channel lag. Unlike ordinary testers with low sampling rates that blur sudden electrical disturbances, this unit precisely restores the complete wave contour of voltage swells, sags, impulse surges and equipment switching inrush currents, with instantaneous voltage tolerance up to 1000V to match high-voltage cabinet testing scenarios.

The instrument adopts dual-layer waveform storage logic: it automatically locks 50/60 cycle standard wave records for routine power monitoring, while triggering high-speed transient snapshots once signals exceed user-defined threshold limits. All captured wave data carries accurate time stamps and can be reviewed on the color LCD with zoom and cursor tools to pinpoint the exact moment of grid anomalies such as inverter startup shocks, UPS switching transients and motor inrush surges. It supports half-cycle RMS waveform extraction to analyze short-duration load fluctuations that standard slow sampling equipment cannot detect.

All waveform files are stored on the built-in 32G TF card, and users can export full wave datasets via USB flash drive to the matched GFUVEPQA desktop software for offline deep waveform analysis, fault replay and annotated inspection reports. Compliant with IEC 61000-4-30 Class A standards and equipped with CAT IV 600V high safety rating, this high-speed waveform recording capability is essential for power station acceptance, industrial electrical troubleshooting and new energy equipment performance verification.

Learn more: https://www.gfuvegroup.com/power-quality-analyzer/three-phase-power-quality-analyzer.html

#GF438II #WaveformCapture #200kHzSampling #TransientRecording #PowerTransientTest #VoltageSagAnalysis #InrushCurrentTest #PQAnalyzer #GridFaultDetection #RenewableTestingTools