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China High Quality protective relay test system Manufacturer – GDJB-II SECONDARY CURRENT INJECTION TEST SET – HV Hipot
Features A. Working conditions 1. Power supply: AC 220V±10%,50Hz 2. Working environment: Temperature -10℃～40℃; Humidity: ≤85% 3. Atmosphere: 86-106kPa B. Output power supply 1. AC voltage: 0-220V/3A Adjustable 2. AC current: 0-100A/7V (200A can be customized); 0-20A/25V Adjustable; 0-5A/5V Adjustable 3. DC voltage: 0-220V/3A Adjustable 4. DC current:0-20A/25V 5. Fixed voltage output: DC 24V/48V/110V/220V 6. Current/Voltage accuracy: ±1%. C. Performance Index 1. Ammeter and voltmeter: 41/2 digit. 2. Digital millisecond meter: 0-99.9999s(999.999s can be customized) Resolution: 0.1ms. D. Functions 1. Measure relay: Measure start value, return value and drop-off to pick-up ratio of current, voltage relay. 2. Time relay: Measure start value, return value and action time. 3. Intermed... -
China High Quality How To Test Power Circuit Breaker Manufacturer – GDHL-100B Contact Resistance Tester (Microhm Meter) – HV Hipot
Description The performance of the conductive circuit of the circuit breaker is important to ensure the safe operation of the switch. The pros and cons of the conductive performance can be reflected by the size of the resistance of the conductive loop. Therefore, the IEC standard and the manufacturer have stipulated that the loop resistance should be measured, and there are clear specifications for the loop resistance of various types of switches. The loop resistance tester is a testing instrument meets the requirements of GB50150-2006 and DL / T 845.4-2004 regulations. It is widely applicable to the measurement of contact resistance, loop resistance, cable, wire, and weld contact resistance of various electrical switches. Application ● High,middle and low voltage circuit breakers... -
China High Quality Ct Pt Testing Suppliers – GDHG-108A CT/PT Tester – HV Hipot
GDHG-108A CT/PT Tester supports test voltage method to test bushings CTs which installed on transformer or inside switch-gear, suitable for the laboratory and on-site detection. Itcan be easily and conveniently done voltage current characteristic, transformer ratio, ratio and phase angle error, load test items on CT/PT. Features ● Using the voltage detection principle to measure CT and PT. ● To meet the requirements of GB1207, GB1208, GB168-47 (IEC60044-1.6) and other standards. ● No external auxiliary equipment, a single machine can complete all test items. ● With high speed micro printer: real-time print the test result. ● Using intelligent controller, operation is simple. ● 5inch LCD screen display. ● Automatically given CT/PT (excitation) knee point value. ● Auto display 5% and 1... -
China High Quality Microfarad Capacitor Tester Exporters – Insulation Materials Hipot Test Set GDJS-65 – HV Hipot
GDJS-65 Insulation Gloves Test Set It is used to test insulation performance for insulation gloves, boots, mats, hats, rod, Electroscope etc. It can test 6pcs insulation gloves/boots at the same time, also 5pcs insulation rods. Features Manual control unit ● Digital and real time display HV voltage, LV current, 6-way leak current and time. ● With leak current meter and over-current protection meter. ● With movable control unit, easy wiring and testing. ● Manual control, safety and reliability. ● With zero, power, operation, timing indicators. ● With over-current protection, zero-start protection, sound and light alarm, power protected switch. ● New type timer, broader timing range.(1s-99h). Other features ● HV source is oil immersed type testing transformer.(dry type and SF6 gas t... -
OEM Best Testing Circuit Breakers Supplier – GDSL-A Automatic 3-phase Primary Current Injection Test Set with Temperature Test – HV Hipot
Features ● Built-in high configuration industrial control computer, the programmable logic controller (PLC) as the central processor, real-time scan of AC signal, to achieve comprehensive monitoring and closed-loop control, and design password settings management, only the personnel who gets corresponding operation authority, can carry out operation of certain functions. ● Color LCD touch screen. Using intelligent sensor based on field bus technology and realize the full digital data transmission, display operation unit is touch type color LCD screen, full English menu, the interface is clear and intuitive, the operation is simple and convenient. Test without any auxiliary equipment, automatic control, fast, simple and convenient. ● Automatic and manual test mode, with automatic constan... -
OEM Best dew point to relative humidity Supplier – GDBS-305 Automatic Flash Point Closed Cup Tester – HV Hipot
General Information GDBS-305 automatic closed cup flash point tester is the device testing closed cup flash point for petroleum products. It use module design which one host can control several testing furnace, to test different samples at the same time or separately. The testing furnace port can be connected to the host disorderly. It widely used in the field of railway, air company, power, petroleum and research department. Features ● 320*240 TFT LCD screen. ● With high speed signal processor control, reliable and high accuracy. ● One host can control several test furnace to test several samples at one time, which will save testing time. ● Automatic ignition with no gas source ignition mode. ● Built-in atmosphere pressure sensor, auto-measure and calibrate result. ● Self-adapti... -
China High Quality Pulse Signal Generator Manufacturer – GDCY Impulse Voltage Test System (100kV-7200kV) – HV Hipot
Application This impulse test system is used for carrying out full wave lightning impulse voltage tests on HV apparatus such as clearance, bushings, capacitors, switches, power transformers(capacity below 5000kVA), CT/PT at 35kV or below. Operating Condition ● Altitude: 1000m. ● Ambient Temperature: -5℃～＋45℃. ● Max. daily difference temperature: ≤25℃. ● Relative humidity: <90%. ● Anti-shock ability: ≤ level 7. ● Horizontal acceleration of the ground: 3.0m/s2, Vertical acceleration of the ground: 1.5m/s2. ● Waveform of power supply voltage wave is sine actually, and the waveform distortion rate<3%. ● It should be grounded reliably, ground resistance <0.5Ω. ● Usage environment: indoor. No conductive dust, No fire and explosion, No corrosive metal and insulation gas. Applied Sta... -
OEM Best hv cable testing Manufacturers – Partial Discharge Online Monitoring System of Generators – HV Hipot
General Information Generally, partial discharge occurs at a position where the properties of the dielectric material are not uniform. At these locations, the local electric field strength is enhanced, and local electric field strength is too large, resulting in local breakdown. This partial breakdown is not the total breakdown of the insulating structure. Partial discharges typically require a certain amount of gas space to develop, such as gas voids inside the insulation, adjacent conductors, or insulating interfaces. When the local field strength exceeds the dielectric strength of the insulating material, a partial discharge occurs, causing many partial discharge pulses to occur during one cycle of applying the voltage. The amount of discharge delivered is closely related to the n... -
OEM Best Ground resistance meter Factory – GD3126A (GD3126B) Insulation Resistance Tester 5kV/10TΩ (10kV/20TΩ) – HV Hipot
General Information GD3126A (GD3126B) Insulation Resistance Tester is widely used in maintenance of electrical equipment in transformer substation, power plant, etc. It is suitable for carrying out measurement of insulation resistance (IR), absorption ratio (DAR), polarization index (PI), leakage current (Ix) and absorption capacitance (Cx) of all kinds of high voltage equipment, including switchgear, transformers, reactors, capacitors, motors, generators and cables, etc. Features ● Adopts microcomputer control, menu operation and large LCD screen dot matrix display with stable performance. ● Strong anti-interference ability, suitable for measuring in strong electromagnetic interference environment. ● Large capacity, can meet the requirements of high voltage, high resistance, lar... -
China High Quality Current Transformer Factories – GDHG-108A CT/PT Tester – HV Hipot
GDHG-108A CT/PT Tester supports test voltage method to test bushings CTs which installed on transformer or inside switch-gear, suitable for the laboratory and on-site detection. Itcan be easily and conveniently done voltage current characteristic, transformer ratio, ratio and phase angle error, load test items on CT/PT. Features ● Using the voltage detection principle to measure CT and PT. ● To meet the requirements of GB1207, GB1208, GB168-47 (IEC60044-1.6) and other standards. ● No external auxiliary equipment, a single machine can complete all test items. ● With high speed micro printer: real-time print the test result. ● Using intelligent controller, operation is simple. ● 5inch LCD screen display. ● Automatically given CT/PT (excitation) knee point value. ● Auto display 5% and 1... -
China High Quality megger insulation test Manufacturers – Online Monitoring System of Circulating Current on Cable Sheath GDCO-301 – HV Hipot
General Information Cables above 35kV are mainly single-core cables with metal sheath. Since the metal sheath of the single-core cable is hinged with the magnetic field line generated by the AC current in the core wire, the two ends of the single-core cable have a high induced voltage. Therefore, appropriate grounding measures should be taken to keep the induced voltage within the safe voltage range (usually no more than 50V, but no more than 100V with safety measures). Usually, the metal sheath of short line single-core cable is grounded directly at one end and grounded through gap or protection resistor at the other end. The metal sheath of long line single – core cable is grounded by three – phase segmental cross – connection. No matter which kind of grounding me... -
OEM Best instrument to test earthing resistance Manufacturers – GDCR3000 Digital Earth Resistance Tester – HV Hipot
General Information GDCR3000 Digital Earth Resistance Tester is specially designed and manufactured for field measurement, adopting the latest digital and micro-processing technology, 3-pole or 2-pole method for earth resistance measurement, with a unique function of wire resistance verification, anti-interference capability and the ability to adapt to the environment, to ensure high precision, high stability and reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth ground resistance measurement. Measurement range & Accuracy Measurement function Range Accuracy Resolution Earth resistance 0.01Ω～20Ω ±2%rdg ±3dgt (Auxiliary ear...
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