Electrical Testers

GAO’s electrical testers are devices used to measure, test, and troubleshoot electrical parameters and conditions in electrical systems and circuits. They are used by electricians, technicians, and professionals working with electrical equipment. Our electrical testers come in various forms, each designed for specific testing purposes.  

GAO’s electrical testers are composed of display probe or test leads, measurement range selector, power source, control buttons, sensors, circuit protection, housing, calibration adjustments, data logging or connectivity. 

The other common names of the other electrical testers are voltage testers, continuity testers, multimeters, ammeters, ohmmeters, insulation testers, phase sequence testers, clamp meters, ground testers, power quality analyzers, frequency counters, earth resistance testers, impedance analyzers, network analyzers, surge testers, high-potential testers, leakage current testers, power factor meters, capacitance meters, inductance meters, function generators, logic analyzers, oscilloscope, EMI/RFI testers, battery testers, field intensity meter, cable testers, spectrum analyzers, dielectric strength tester, and infrared thermometers. 

GAO Tek has been focused on servicing the North American markets and has earned praise from many of its customers in the U.S., Canada, and Mexico.

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ID: GAOTek- OET-127

GAOTek Air Leak Tester main function is to judge whether there is leakage by comparing the gas pressure difference before and after balance, and to test the physical and other related properties of the product.
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ID: GAOTek-OET-213

This Appliance Safety Other Electrical Tester has RCD test of 10 mA, display range of 30 V to 270 V, and measuring range of 0.00 MΩ to 20.00 MΩ.
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ID: GAOTek-OET-133

This Appliance Tester has display range of 30 V to 270 V, 5 V accuracy voltage indication, 200 mA DC measuring current, and voltage range of 100 V to 253 V.
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ID: GAOTek-OET-224

GAOTek automatic digital earth resistance tester adopts the latest digital and micro-processing technology, 3-pole or 2-pole method for earth resistance measurement.
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ID: GAOTek- OET-129

GAOTek Battery Capacity Tester is an intelligent and efficient battery equalization device which is used to solve the problem of cell voltage imbalance quickly.
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ID: GAOTek-OET-111

GAOTek Battery Device for Laboratory Tester electromagnetic vibration system simulates the vibration environment under the laboratory condition and tests the impact strength as well as reliability of various vibration test applications.
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ID: GAOTek-OET-259

GAOTek circuit breaker analyzer takes SCM as core to sample, process and output, intelligent, multi-function, data accurate, strong anti-interference, simple operation, small size, light weight, beautiful appearance, etc.
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ID: GAOTek-OET-211

GAOTek Circuit Breaker Other Electrical Tester is used for testing, analyzing and assessing power system circuit breakers, mechanical characteristics of load switches and isolated switches and other AC high voltage switches, contact resistance, Arcing contacts and vibration characteristics etc.
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ID: GAOTek-OET-255

This Digital AVO Meter has an operating temperature of -40 ° F to 1832° F, input protection of 600 V rms, and input impedance for DCV of 1 GΩ Max.
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ID: GAOTek-OET-115

This digital resistance tester has up to 200A currents, accuracy of ± (0.5% ± 2), power consumption of 1000 W and power range of  up to 100 m W (100 A).
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ID: GAOTek-OET-217

GAOTek Digital Other Electrical Testers are resistance testers with precision design is suitable for testing the insulation resistance of most primary and secondary equipment such as cables and transformers.
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ID: GAOTek-OET-256

This Digital Torque Meter has a battery capacity of 3500 mA, power of 7.5 V, torque measuring range of 100 kgf.cm, and test precision of 0.5%.
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ID: GAOTek-OET- 310

This Digital Torque Tester has an Input charger of AC 220 V 50 Hz, output DC of 12 V 300 mA, power of 1.2 V × 6 N-iMH battery, and frequency of 600 Hz.
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ID: GAOTek-OET-215

GAOTek Direct Current High Voltage Other Electrical Testers are high-frequency voltage doubling circuit, advanced PWM high-frequency pulse width modulation technology, closed-loop adjustment and large voltage feedback, greatly improving voltage stability.
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ID: GAOTek-OET-185

GAOTek dynamic pile integrity tester is a test and analysis instrument for pile integrity testing and monitoring of precast pile driving process.
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ID: GAOTek-OET-307

This Electric Megger Insulation Tester has an environmental temperature of 32° F to 113° F, accuracy class of 10%, and output voltage level of 1000 V.
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ID: GAOTek-OET-108

GAOTek product is a portable accuracy DC double bridge with Kelvin network (hereinafter referred to as "Bridge").
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ID: GAOTek-OET-101

GAOTek Series dc high voltage generators adopts high frequency voltage double circuit, adopts advanced PWM high frequency pulse width modulation technology, closed loop adjustment, and adopts large voltage feedback, which greatly improves voltage stability.
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ID: GAOTek -OET-114

GAOTek Electrical Circuit Breaker Tester high-voltage circuit breaker analyzer (high-voltage switch mechanical characteristic tester) can accurately measure the mechanical dynamic characteristic parameters of high-voltage circuit breakers of various voltage levels such as low oil, high oil, vacuum, sulfur hexafluoride, etc. and the measurement data is stable , Strong anti-interference, can do experiments in 500 KV and below power stations, convenient wiring, simple operation, it is the most convenient tool for high-voltage switch maintenance test.
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ID: GAOTek-OET-104

GAOTek product is to measure the abrasion resistance of rubbers (vulcanized thermoset rubbers and thermoplastic elastomers) that are subject to abrasive/frictional wear in their actual service, such as tires, conveyor drive belts, and shoe soles.
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ID: GAOTek-OET-302

GAOTek electrical glove testing equipment is designed according to the positive pressure leak detector principle proposed by GB or T 25915.7 to 2010 to ISO 14644 to 7 to 2004, and it is a dedicated instrument to detect the gloves leakage.
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ID: GAOTek-OET-309

GAOTek electrical high voltage KV tester used for electrostatic powder coating gun testing the output voltage range 0 to 100 KV.
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ID: GAOTek-OET-303

This Electrical Impulse Winding Tester has an ambient temperature of 14° F to 104° F, power frequency of 45 Hz to 65 Hz, and voltage of 15 V to 400 V.
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ID: GAOTek-OET-106

GAOTek Adopted technology of ARM chip controlling output and toroidal transformer with high-capacity and equipped with LCD display meter, the HZ-109S primary injection test set could simultaneously display primary current, secondary current, turn ratio and the actuation time of stopwatch connection position (electric potential).
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ID: GAOTek-OET-188

GAOTek electrical test equipment supports single port vector network analysis and dual port simple vector network analysis, at the same time it expands the spectrum, field intensity and low frequency signal generator and other functions to maximize the practicability.
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ID: GAOTek- OET-135

GAOTek electrical tester measures voltage up to 1000 V AC through its open fork without any test lead contact to the live voltage.
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ID: GAOTek-OET-220

GAOTek electrical tester equipment with printer is used to calibrate three phase, single phase, active and reactive energy meters error.
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ID: GAOTek-OET-190

This Electrical TTR Tester has a service temperature of 14° F to 104° F, output voltage of 160 V, power of electronic, and range of 0.9 to 10000.
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ID: GAOTek-OET-306

GAOTek energy meter tester has a versatile meter system that supports simultaneous verification of active and reactive inductive energy meters, as well as electronic energy meters in a four-wire system.
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ID: GAOTek-OET-118

GAOTek High quality AC and DC Withstanding Voltage Hipot Electrical Safety Tester is the latest intelligent safety tester on the market at present.
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ID: GAOTek-OET-210

This High Quality Other Electrical Tester has working temperature of 14 ℉ to 104 ℉, amplifier gain of 82 dB, and amplitude resolution of 0.39%.
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ID: GAOTek-OET-105

GAOTek Withstand Voltage Tester of Meiruike Is the Measurement Instrument for Compressive Strength, It Mainly Used for Insulation Leakage Safety Test of Product.
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ID: GAOTek-OET-219

This High Voltage Insulation Other Electrical Tester has an insulation range of 0.01 MΩ to 2000 GΩ, power of 12.6 V and short circuit current of 5 mA.
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ID: GAOTek-OET-116

This High Withstand Voltage Tester has AC/DC testing, oil-immersed, inflatable, dry types with 300 kV output, and up to 50 KVA current capacity.
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ID: GAOTek-OET-102

GAOTek instrument is a special automatic tester for CT/PT characteristics, and a special tester for replay protection and HV insulation. It can test: CT volt-ampere characteristic test, CT variable ratio polarity test, CT polarity test, CT primary flow test, CT AC withstand voltage test, PT volt-ampere characteristic test, PT variable ratio polarity test and PT polarity test.
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ID: GAOTek-OET-214

GAOTek Identification Instrument Live Other Electrical Tester are handheld device with a 3.5 in (8.89 cm) color LCD screen and a built-in high-speed microprocessor, which can recognize and decode the pulse coded current signal of the transmitter.
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ID: GAOTek-OET-257

GAOTek digital insulation resistance meter also known as megohmmeter, high voltage insulation resistance tester, etc., for the insulation resistance test.
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ID: GAOTek-OET-225

GAOTek insulation resistance tester electrical meter has AC DC Voltmeter 5000 V Automatic Range Digital Me ohmmeter Data Hold UT510 Series testers measure insulation resistance of large transformers, generators, high voltage motors and more.
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ID: GAOTek-OET-222

GAOTek insulation resistance tester meter is suitable for testing the insulation resistance of most primary and secondary equipment such as cables and transformers.
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ID: GAOTek-OET-301

GAOTek lamination iron loss tester is for testing iron loss on a single CRGO silicon steel strip.
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ID: GAOTek- OET-132

This Light Flicker Tester has 380 nm to 780 nm wavelength, 0.2 nm spectral resolution, 0.5 nm reproducibility, and 5 in 480 x 854 LCD display.
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ID: GAOTek-OET-305

GAOTek medium voltage calibrator tester could be used to measure angle difference, admittance, impedance of CT and PT.
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ID: GAOTek-OET-308

This Meter Tester has an operating temperature of -328° F to 1994° F, and measuring current range of 10.00 A, and measuring resistance range of 600 Q.
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ID: GAOTek-OET-189

GAOTek meter transformer ratio tester used for checking the correctness of the transformer turns ratio, the condition of the tap changer, whether the transformer is short-circuited between turns, and whether the transformer can be operated in parallel.
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ID: GAOTek-OET-261

GAOTek multifunction calibrator is an ultra-compact and simple-to-use multifunction calibrator for testing, configuring and calibrating virtually all process parameters.
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ID: GAOTek-OET-107

GAOTek Transformer Calibrator could be used to measure angle difference, admittance, impedance of CT and PT.
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ID: GAOTek-OET-216

GAOTek Multifunction Other Electrical Tester is with 3.5 in (8.89 cm) TFT color LCD display, provides insulation resistance, earth resistance, loop impedance, voltage, RCD, PFG and PSC testing.
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ID: GAOTek-OET-120

GAOTek Oil Abrasion Tester is based on the test principle of the American ring block testing machine (Timken testing machine), and the main functions are simplified.
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ID: GAOTek-OET-258

GAOTek oil moisture testing is specially designed for the measurement of water content in oil.
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ID: GAOTek- OET-128

GAOTek Partial Discharge Tester can be widely used in partial discharge detection of power system, including high voltage switchgear, ring network cabinet, voltage or current transformer, transformer (including dry type transformer), GIS, overhead line, cable and other equipment insulation state detection, through the following indicators to measure the discharge degree of electrical equipment: Partial discharge intensity detection: by measuring the discharge signal in one power frequency cycle, the partial discharge intensity is characterized according to the maximum value (dB) in the discharge pulse sequence.  
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ID: GAOTek- OET-134

GAOTek Polarity Tester is a new generation of CT and PT polarity testing instruments.
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GAOTek portable DC voltage tester adopts PWM high frequency pulse width modulation technology for closed-loop adjustment, with high voltage stability, small pulsation factor and fast and reliable protection circuit.
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ID: GAOTek-OET-218

This Portable Other Electrical Tester has operating temperature of 32 ℉ to 104 ℉, short circuit of 5 mA, and power supply of 14.8 V Lithium battery.
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ID: GAOTek-OET-212

GAOTek Portable Other Electrical Tester Tools are used to measure the internal resistances, voltages, and temperatures of rechargeable batteries such as lead-acid batteries and lithium batteries, to judge the battery health statuses.
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This precision hipot tester has AC output voltage range of 5000 V, AC voltage frequency of 60 Hz, and insulation resistance of 1 MΩ to 2000 MΩ.
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ID: GAOTek-OET-119

GAOTek Resistance Tester adopts high frequency and high power constant current switching power supply technology, which can measure micro-ohm contact resistance.
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ID: GAOTek-OET-221

This Screw Torque Tester has power charger of 100 V to 220 V, battery of 3500 mA, power of 7.5 V, and measuring range of 1.5 kgf.cm to 100 kgf.cm.
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ID: GAOTek-OET-117

This Screw Torque Tester has measuring rang of 1.5 to 100 kgf.cm, power of 7V , LCD display, battery capacity of 35mA with USB connectivity.
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ID: GAOTek-OET-254

This Surface Area Analyzer Test Meter has power supply voltage of 220 V, time accuracy of <0.2 s, power of 5 W, and accuracy of measurement of ≤1%.
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ID: GAOTek-OET-103

GAOTek product is a special portable product for testing and analyzing power grid running quality. It has the function of electrical parameter testing and vector analysis. Can display single-phase voltage and current waveform, meanwhile display three-phase voltage and current waveform.
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ID: GAOTek- OET-130

GAOTek Torque Wrench Tester is applied for bottled packaging products, suction nozzle packaging products and hose packaging products.
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ID: GAOTek-OET-113

GAOTek Transformer On-load switch Tester the on-load tap changer is the only moving part connected with the transformer loop; the detection of the on-load tap changer has attracted more and more attention.
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ID: GAOTek-OET-304

This Transformer Tester has temperature of 68° F to 104° F, range of 0.9 to 10000, power supply of AC 220 V 50 Hz, and resolution of minimum 0.0001.
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ID: GAOTek-OET-260

This Transformer Turns Ratio Tester has an operating temperature of 14° F to 104° F, environmental humidity of 10% to 85%, and power of AC 220 V.
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ID: GAOTek-OET-112

GAOTek Universal Material Tensile Strength Tester is a versatile piece of equipment that can be used to test the tensile, compression, and flexural strength of materials.
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ID: GT00WD00ZY

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ID: GT00YA00ZX

This Portable H/L Voltage Clamp Current Leaker measures high voltage current with a 12.5 in (32 cm) insulating rod, adopting the latest CT technology and integrating mask digital technology.
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ID: GT00YB00ZV

This three-channel leakage current tester provides online measurement, monitoring, and recording of three channel AC leakage currents at the same time by adopting the latest CT and magnetic shielding technology.
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ID: A0N00021tek

This digital satellite finder is used for for DVB-S/S2, ABS-S signal measurement and comes with the embedded video and audio decoders