GF438II All Functions | Harmonic, Unbalance, Waveform, Trend & Flicker Complete Showcase

 The GF438II IEC Class A handheld power quality analyzer integrates a full suite of core grid diagnostic tools in one lightweight unit, eliminating the need to carry multiple separate testers for on-site power audits. Covering five core testing modules including harmonic spectrum analysis, three-phase unbalance calculation, high-speed waveform capture, long-term trend logging and standard flicker evaluation, the device enables seamless switching between all measurement modes without repeated wiring or parameter reconfiguration.

Compliant with IEC 61000-4-7 harmonic standards, it resolves up to 63rd voltage and current harmonics alongside interharmonics and high-frequency harmonics, visualizing distortion levels via intuitive histogram displays to trace harmonic pollution from inverters and nonlinear loads. For unbalance testing, it calculates positive, negative and zero sequence components to quantify voltage and current unbalance rates with industry-leading precision, ideal for troubleshooting uneven factory load distribution and new energy combiner cabinets.

Equipped with a 200kHz high-speed sampling chip, the instrument captures full-cycle transient waveforms during load switching, motor startup and voltage sag/swell incidents, storing complete wave traces for post-fault analysis. Its built-in logger module continuously records all electrical indicators at custom intervals and generates continuous trend curves, while the dedicated flicker module strictly follows IEC 61000-4-15 to compute PST 10-minute and PLT 2-hour flicker values for grid compliance verification.

Beyond core power quality tests, the unit also supports real-time power parameter readout, event snapshot recording and patented energy loss computation to quantify financial losses caused by distortion and imbalance. All stored waveform, harmonic, unbalance, trend and flicker datasets can be exported via USB and processed with matched GFUVEPQA PC software to generate unified, standardized power quality inspection reports. With CAT IV 600V safety certification and over 6 hours of continuous battery runtime, it serves as an all-in-one inspection solution for power utilities, photovoltaic plants, wind farms and industrial manufacturing facilities.

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

#GF438II #PowerQualityAnalyzer #AllInOnePQTester #HarmonicAnalysis #ThreePhaseUnbalance #WaveformCapture #FlickerTest #GridTrendLogging #RenewableEnergyTest #IECClassATester

GF2018 New-Generation Wireless High Voltage Primary Current Sensor Recorder for Power Grid Monitoring

 As an upgraded wireless current recorder, the GF2018 adopts advanced 433M wireless transmission technology to deliver stable and accurate current data during long-term monitoring. Its main body is made of high-performance ABS+PC composite materials combined with cutting-edge waterproof technology, enabling continuous online operation even under extreme weather conditions. Equipped with Rogowski coil based True RMS inductive sensors without magnetic components, the device can electronically close the sensor opening and reject external stray currents effectively. It is widely deployed in various power-related sectors to record primary current of overhead lines reliably. https://www.gfuvegroup.com/ammeter-recorder/high-voltage-power-load-recorder-with-wireless-current-sensor.html

#GF2018 #WirelessCurrentRecorder #HighVoltageMonitor #PowerGridMonitoring #RogowskiCoilSensor

30m Wireless Transmission High Voltage Clamp Ammeter GF2011

 Complex substation layouts, wall barriers and transformer blocks often disrupt remote signal reading for traditional HV measuring tools — GF2011 solves this pain point with robust 30-meter barrier-penetrating wireless transmission, delivering stable real-time data no matter the site obstacles.

This industrial-grade clamp ammeter pairs seamlessly with a 5m segmented insulation rod with 100kV AC insulation strength, enabling safe live-line tests on power lines up to 69kV. Its advanced CT sensing and masked digital chip technology delivers ultra-wide measuring coverage from micro 0.00mA leakage signals to 1200A heavy load current, with 0.01mA high resolution and consistent ±1% accuracy across full measurement range.

The separated handheld receiver features a backlit 4-digit LCD for clear readings in low-light substation environments, built-in peak hold, data lock and storage for up to 99 groups of field records. You can store test data on-site to manually calculate primary and secondary loop current ratios for transformer performance diagnosis later. The anti-drip meter body and multi-section insulation rod are engineered to resist moisture, high temperature, impact and bending, operating steadily under -25°C to 40°C wide temperature range for all-year outdoor patrol. Powered by matched alkaline batteries, it supports 10 hours of continuous testing, equipped with low-battery reminder and 15-minute auto shutdown to extend battery lifespan. Fully compliant with IEC1010 and EMC international safety standards, the complete package contains clamp sensor, wireless receiver, protective storage case and full set of batteries for independent single-person field operation.

Perfect fit for distribution grid patrol, power anti-theft inspection, mining electrical maintenance, power plant routine testing and property electrical fault troubleshooting.

View full technical parameters, factory wholesale price and customized project support here: https://www.gfuvegroup.com/ammeter-recorder/wireless-high-voltage-clamp-current-meter-with-insulation-rod.html

#30mWirelessHVTest #GF2011Ammeter #LiveLineCurrentTest #GridFaultInspection #HVClampAmmeter #PowerO&MEquipment #IECStandardTester

TEST-901D PROTECTIVE RELAY PRIMARY INJECTION EQUIPMENT

TEST-901D is a specialized primary injection test instrument designed for the precise testing and validation of protective relay systems. It delivers stable 1000A high-current output to simulate realistic fault conditions, enabling accurate assessment of relay tripping logic, response time, and overall protection performance. Integrated with advanced control technology and a user-friendly interface, it also supports comprehensive CT ratio and polarity verification, ensuring reliable alignment between relay settings and current transformers. Equipped with built-in data logging and safety features, this equipment streamlines relay commissioning and maintenance workflows, making it an essential tool for ensuring power grid safety and reliability.

For more information about our products, please visit our official website: https://www.gfuvegroup.com/primary-injection-test-equipment/1000A-primary-current-injection-test-equipment.html

T-3630 | DC Current Test with GF6018A

The GFUVE T-3630 performs DC current testing as part of its comprehensive electrical measurement capabilities. In this demonstration, the GF6018A Multifunction Calibrator is used as the test power source, providing a controlled DC current input for the T-3630.

This test setup helps verify the T-3630's measurement performance and demonstrates a practical connection method for professional electrical testing. It is suitable for laboratory verification, equipment testing, calibration, and field applications.

🔗 T-3630 Product Details: https://www.gfuvegroup.com/electrical-test-tool/hv-insulation-resistance-tester.html

#T-3630 #DCCurrentTest #GF6018A #InsulationResistanceTester #ElectricalTesting #HighVoltageTester #Megohmmeter #ElectricalTestEquipment #DCVoltage #TestEquipment #ElectricalMeasurement #PowerTesting

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

 The GFUVE TEST-630 provides comprehensive AC test operation functions, serving as the core secondary injection testing solution for power system protection relays. It delivers standard and fault-state AC signals to fully verify relay operating performance and protection logic.

Adopting high-precision 6U6I synchronous AC output, the tester supports flexible adjustment of voltage, current, phase angle and frequency. It can simulate normal operating conditions, phase faults, ground faults and unbalanced three-phase states, covering almost all AC fault scenarios in power grids.

With high-sensitivity binary input channels, the device stably captures relay tripping, closing and state switching signals during AC testing. It accurately measures operating time, action thresholds and logical response to ensure consistent and reliable protection behavior under various AC working conditions.

Widely applied in substation commissioning, power system maintenance and laboratory relay calibration, the AC test operation ensures all AC-based protection functions operate accurately, laying a solid foundation for safe and stable power grid operation.

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

#GFUVE #TEST630 #SixPhaseRelayTester #ACTestOperation #ACSignalTesting #SecondaryInjectionTester #PowerGridProtection #SubstationCommissioning

TEST-330B | DC Test | Protection Relay Testing

Discover how the TEST-330B Three Phase Secondary Current Injection Test Set supports reliable DC testing for professional protection relay applications.

This demonstration focuses on the DC test process, showing how TEST-330B provides controlled testing conditions to help engineers verify relay operation, analyze protection characteristics, and improve the accuracy of commissioning procedures.

Designed for power system professionals, TEST-330B offers a practical testing platform for substations, utilities, and industrial electrical networks where dependable protection performance is essential.

Explore DC protection relay testing with TEST-330B and experience a smarter approach to relay verification.

Product Details:

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

#TEST330B #DCTest #ProtectionRelayTesting #RelayTester #SecondaryInjectionTest #ElectricalTesting #PowerSystemTesting #SubstationTesting #RelayProtection #PowerEngineering #ElectricalEquipment #Commissioning