HGQY-H voltage transformer field tester based on the traditional differential measurement method uses the voltage transformer load error curve extrapolation method mentioned in the newly issued JJG1021-2007 "Power Transformer" Verification Regulations. Using low-voltage extrapolation technology combined with advanced measurement circuits a single instrument can measure electromagnetic voltage transformers from 6kV to 220kV/3 with an accuracy level of 0.05 which is very suitable for field voltage transformer verification. 1. No need for booster voltage standard load box and voltage regulator on site you can achieve the test of voltage transformer ratio difference and angle difference. A single instrument weighs 12 kg which greatly facilitates on-site use. 2. The test speed of the instrument is fast and the measurement of a single voltage transformer does not exceed 1 minute. 3. The instrument is equipped with a micro printer which can print test data on site. 4. It can store 1000 sets of data and can communicate with PC by RS-232 interface. 5. The equipped data management software can be networked with the power system MIS software. 6. Adopt 10.4-inch large-screen LCD display with humanized operation interface and wiring diagram and simple operation guide are attached to the instrument. 7. The output power is large which can meet the required capacity of 220kV voltage transformer boost.
The high-voltage electric energy measurement devices of power plants and substations and the electric energy measurement devices of a large number of users are related to the interests of power generation power transmission power supply and multiple parties of users. In order to ensure accurate measurement the inspection must be carried out in accordance with SD109 "Inspection Regulations for Electric Energy Measurement Devices" and DL / T448-2000 "Technical Management Regulations for Electricity Measurement Devices". TKHG-Q current transformer field calibrator was developed based on high-end testing technology large-scale electronic circuit design and in compliance with relevant national regulations. It solves the problems of on-site verification of current transformer and voltage transformer with high working intensity and tedious operation. At the same time the product has reliable performance and powerful functions.
SMG6600 six channel differential protection vector tester is a kind of instrument which can measure primary side current secondary side current and secondary side voltage at the same time and then make analysis and report. The instrument can analyze three-phase unbalance degree and hexagonal vector diagram by measuring primary side current secondary side current and secondary side voltage and can output word and Excel files without upper computer software which is convenient for users Period processing report. The instrument adopts high-precision data acquisition chip with analog 24 bit ADC precision DSP processing data arm and TFT touch screen display measurement data intuitively and conveniently. 1. At the same time measure the 1-3 AC voltage on the secondary side; 2. At the same time measure 1 to 3 AC currents on the primary side; 3. At the same time measure 1-3 AC current at secondary side; 4. Measure the phase between voltage current and voltage (angle between primary and secondary current); 5. Measurement of power grid frequency; Measurement of active and reactive power; 7. Measurement of power factor; 8. Three phase voltage and current unbalance detection; 9. Secondary side phase voltage range: 1-500v secondary side current range: 1ma-10a primary side current: 100ma-5a; 10. Display hexagonal vector diagram (mixed primary side and secondary side); 11. It is used as leakage current meter; 12. Low power consumption design built-in rechargeable battery as backup power supply; 13. Automatic range user-friendly design of mouse operation; 14. Data storage can be exported through U disk which is convenient for user data processing; 15. The field measured data can be printed out by micro printer; 16. Export files in word and excel format to facilitate printing reports.
At present in the electric power system the grounding resistance of the earth network is mainly measured by power frequency large current tripole method. In order to prevent power frequency interference during power grid operation and improve the accuracy of measurement results insulation preventive test regulations stipulate that the test current of power frequency high-current method shall not be less than 30A. As a result there are many problems such as bulky test equipment complicated test process high working intensity and long test time. Ground Network Earth Resistance Tester adopts new frequency conversion ac power supply and adopts microcomputer processing control and signal processing and other measures which well solves the anti-interference problem in the test process simplifies the trial operation process improves the accuracy and accuracy of the test results and greatly reduces the labor intensity of test personnel and test cost. Ground Network Earth Resistance Tester is suitable for testing power frequency grounding impedance contact voltage step voltage power frequency characteristic parameters and soil resistivity of various grounding devices. �© measurable substation ground network (4) water and fire power plants microwave station �© (10) the lightning rod (10 �©) multi-purpose machines. Ground Network Earth Resistance Tester adopts different frequency anti-interference technology which can accurately measure data at power frequency of 50Hz under strong interference environment. The maximum of test current is 3A which will not cause excessive potential of grounding device during the test. Meanwhile it also has strong anti-interference ability so it can be measured without power failure.
The electrical integrity of grounding device refers to the grounding device should be between all kinds of electrical equipment grounding device parts and the electrical connectivity between each equipment that is direct current resistance value also known as electrical conductivity. Reliable and effective connection between grounding lead and ground network is the fundamental guarantee of safe operation of power equipment. Ground down lead is electric power equipment and the connection part of the network in the long running process of electric power equipment joint is likely to be affected due to factors such as moisture rust a node or even the phenomenon such as fracture lead to ground down lead and the main grounding network connection resistance increases which cannot meet the requirements of power regulation problems in the operation of the equipment in safe hidden trouble caused serious ground operation. Corrosion and even fracture may occur to the underground grounding pole and its connecting part of the grounding device. Therefore it is necessary to test the electrical integrity of ground equipment regularly. Electric power industry standard DL/T475-2006 "guidelines for the grounding device parameters measurement regulation electric conductivity connectivity should choose special measuring instrument for 1 m instrumentresolution accuracy is not lower than 1.0 on the Richter scale are unlikely. Our company is based on this The standard developed Ground Continuity Tester is a portable Tester with a high degree of automation which is specially used to test the electrical integrity of grounding devices. Its various technical indicators meet or are superior to relevant standards. Ground Continuity Tester is a simple and convenient operation high precision fast test speed good retesting performance and intuitive reading. It is an ideal special instrument in line with the requirements of regulations which greatly facilitates the development of test projects and improves work efficiency.
With the continuous update and expansion of modern technology higher requirements are put forward for the reliability of power system and high-voltage equipment. Accidents or damage of electrical equipment are usually closely related to insulation defects. Large capacity of electrical equipment high voltage structure diversification and sealing electrical equipment should be put forward a new higher requirements. With the increasing use of large-capacity equipment the insulation performance cannot be detected by ordinary megohm meter. Power test procedures for a number of power equipment such as: cable motor generator transformer transformer high voltage switch lightning arrester and other requirements to do a series of insulation performance tests the first is to do insulation resistance test. When testing the insulation resistance of large-capacity power equipment the insulation resistance value is related to the pressurizing time. The longer the pressurizing time is the higher the insulation resistance value is. This phenomenon is called insulation absorption phenomenon. In order to understand the insulation performance of the subject it is necessary to conduct the absorption ratio and polarization index test first so as to provide safety guarantee for the next leakage dielectric loss partial discharge and insulation performance test. According to the electric power standardization regulations our company specially introduces BC2010 Insulation Resistance Tester with large capacity high anti-interference and stable performance which can conduct Insulation absorption ratio and polarization index tests on electric power equipment providing accurate judgment in the early stage for series Insulation tests. Product nickname Digital megohmmeter pointer megohmmeter insulating sheet Insulation Resistance Tester high voltage Intelligent Dual Display Insulation to hold Tester Insulation Resistance meter Insulation characteristics Tester high voltage megohmmeter with the function of absorbing than megohmmeter megohmmeter with polarization index function the electric shake tables electronic Intelligent Dual Display Insulation to hold Tester high-power high-voltage megohmmeter
The electric power production hold detector using embedded industrial microcomputer real-time operating system digital to analog pointer and digital code display perfect combination the whole list has a variety of output voltage level (2500 v 5000 v 10000 v) strong anti-interference analog pointer and digital synchronous display ac/dc simple operation automatic save measurement results etc. It is an ideal tester for measuring insulation resistance of transformers mutual inductors generators high voltage motors lightning arresters etc. Product nicknameï¼?Digital Megabyte meter pointer Megabyte meter insulation meter digital high voltage Megabyte meter high voltage insulation resistance tester insulation resistance meter insulation characteristics tester electric shake meter electronic insulation resistance tester high voltage Megabyte meter insulation resistance tester
Product Introduction The instrument is designed for HV substations and power plants to test the characteristic of large HV transformer, electric machines and appliances, remote power cable or buried cable and other electrical insulation resistance in strong interference environment. It also can be widely used for testing characteristics of insulation resistance in other area. Product Characteristics 1. With strong anti-electric field interference ability up to 2mA (50Hz), it is suitable for 500kV substation without dismantling wire to test insulation resistance of 500kV large-scale transformer. 2. The short-circuit current of test power> 5mA, maximum up to 15mA. Be suitable for testing high capacity and high inductance. 3. Wide resistance range from 0.5M�© ~ 200000M�©. With high-resolution, having accurate readings. 4. Wide voltage range: 0.25kV, 0.5kV, 1kV, 2.5kV, 5kV, 10kV, 15 kV, you can smoothly adjust voltage from 0V to the desired value. 5. With timekeeping function, remind users to record, and analyze absorptance and polarization index of measured target.
Application: ETCR2000 clamp ground resistance tester is a major technological breakthrough in traditional grounding resistance measurement. It is widely used in the grounding resistance measurement of electric power telecommunications meteorology oilfield construction and industrial and electrical equipment. When measuring circuit grounding system it is not necessary to disconnect the each connection wire and use auxiliary electrode it is safe and quick easy to use. Can measure the grounding fault which can not be measured by the traditional method because this instrument measure the integrated value of grounding resistance and ground lead resistance apply to the occasion that can not use the traditional method. Features: Apply to all kinds of ground lead.(round bar flat bar angle iron). Non-contact measured grounding resistance safe fast. Without using the assistant ground rod. Without interrupting the grounding of the device under test. With double protecting insulation. With strong anti-interference ability and high accuracy. Use 5# alkaline batteries convenient for users.
With the development of China's electric power industry the capacitor compensation device has been unprecedentedly developed but with it the capacitor accident rate has risen sharply and there have been serious group injury accidents. In order to prevent the occurrence of parallel capacitor accidents and ensure the safe and reliable operation of the power grid State Grid Corporation has formulated the "Measures for Preventing High Voltage Shunt Capacitor Accidents". It is clearly stated that "the measurement of the capacitance of a single capacitor of a capacitor bank should be carried out on a regular basis. It is recommended to use a measurement method that does not remove the connecting wire to avoid the failure of the casing to leak due to the force of the casing caused by the disassembly and assembly of the connecting wire". Automatic capacitance and inductance tester is designed for the problems in the measurement of high voltage shunt capacitor banks in substation sites and refers to GB3983.2-1989 "High Voltage Shunt Capacitors" DL/T840-2003 "Technical Conditions for Use of High Voltage Shunt Capacitors" and JB5346 -1998 "Series reactor" and other national standards and specially developed mainly to measure the high voltage shunt capacitor bank and reactor of reactive power compensation device. Automatic capacitance and inductance tester adopts a new generation of high-speed hybrid microprocessor which is highly integrated synchronously collects the voltage signal and current signal of the test object and automatically calculates the capacitance value inductance value and reactive power value. On-site measurement of capacitors eliminates the need to remove the connecting lines simplifying the test process effectively improving work efficiency and avoiding damage to power equipment. After the test the capacity of each phase capacitor and other parameters are automatically calculated and it is easy to discriminate the quality change of the capacitor and the connection conductor failure between devices. At the same time the automatic capacitance and inductance tester also features data storage and USB communication eliminating the need to copy data on-site and ensuring complete measurement data.
Overview: Underground fault cable locator Consisting of the transmitter, receiver, magnetic induction wand, location detection frame and other components, This instrument is a special instrument cable, cable fault location test for the test object is a metal conductor (wire pairs, sheath, shield) of a variety of fiber optic cable. Its main function is to locate bad insulation test points, probe and cable depth testing cable path. Main Technical Parameters: Tracing positioning distance: telephone cable is around 3km, other cables are up to 20km Positioning impedance range: 0-5M Positioning accuracy:
Product description The portable search instrument of DC ground fault designed and manufactured by our company can apply to DC system of any voltage class. It is equipped by clamp meter of high-precision, which greatly expanded detection range and enhanced capacity of resisting disturbance through efficiently disposing various signals. It employed advanced computing method and fuzzy control theory and can manifest insulating degree of the detected circuit in the form of insulation index and wave, which fully reflects the advantage of artificial intelligence. It has precise judgment for deciding ground point. It can point out the direction of relative detecting point of ground point, thus accomplish ground detection of loop circuit rapidly and precisely. Beyond that, users can order instrument with appropriate insulation alarm threshold value within the range of insulation alarm threshold value based on the need of own system. Users can accomplish the detection of DC ground and analysis of insulation degree by matching the tap position of clamp meter with the measuring range of detecting instrument.
Send InquiryCHAT NOW Product Details Product description This cable fault tester is a comprehensive set of cable fault detection equipment. It can be used to detect flash-over cable fault, the earthing of the resistance, short circuit , cable break, and poor contact, with acoustic instrument, the exact location of the fault can be accurately detected. This tester is particularly suitable for testing voltage power cables and communication cables in various models and different levels Applications and Uses This tester can test various types of power cables (voltage 1KV ~ 35KV) and telephone cable, FM communication cables, coaxial cables, and the short circuit on the metal overhead cables, grounding, high resistance leakage, high impedance fault flash-over ,cables disconnection, and poor contact fault; and it can also test the length of the cable and the waveform transmission velocity.
Product description Transmission Line Parameter Test System is of an integrated structure, with a built-in variable frequency power supply module and a variable frequency voltage regulating output power supply. The frequency can be changed to 45Hz and 55Hz. Digital filtering technology is adopted to avoid the interference of power frequency electric field to the test and fundamentally solve the difficult problem of accurate measurement under strong electric field interference. At the same time, it is applicable to the occasions where the generator is used for power supply detection after all power outages. Technical index 1 Utilization Conditions -20 50 RH 80% 2 Anti-interference Principle Frequency variation method 3 Power Supply AC220V±10% Generator 3KW 4 Power Output Max.output voltage AC300V Voltage accuracy 0.5% Current accuracy 0.5% Max.output current 8A Output frequency 45Hzã??55Hz Interference Current 30A Resistance to Induced Voltage 10KV Memory Size 200 groups Support U Disk Data Storage Weight 67 Kg
Send InquiryCHAT NOW Product Details Product description Intelligent loop resistance tester is ergonomically designed, in line with operating practices, use high-frequency switching power supplies and digital circuit technology for measuring the contact resistance of the circuit switch control device. Test current is DC 100A. In the case of DC 100A can be directly measured contact resistance test result with a large-screen LCD display, and with data storage, print, time settings and other functions, and another gear 50A for user selection; custom test time, maximum 599S, much larger than the standard requirements of 60S; resolution 0.01 and very stable. Meet the power; the electricity sector on-site high voltage switch maintenance and high-voltage switch factory contact resistance testing requirements. Technical index 1. Measurement range: 0-2999.9 2. Resolution: 0~99.99, 0.01 100.0~2999.9, 0.1 3. Measured current: DC 50A, 100A, fixed output. 4. Accuracy :±(0.5% rd+2d) 5. Continuous working time: 5s~599s 6. Display :LCD 7. Communication mode: USB 8. Power supply: AC220V±10% 50Hz 9. Power of the whole machine:600W 10. Maximum storage record: 200 11. Service conditions: temperature- 10â??ï½?40â?? humidityâ?¤80 %RH 12. Dimension: 360 300 250 mm3 13. Weight: 8kg (the accessories not included)
Product description; The metal oxide arrester tester is used for the measurement and analysis of metal oxide arrester [MOA] leakage. It is mainly used for measuring the resistive current to analyze the degree of zinc oxide aging and damp. The field charged test shall conform to Electric Power Industry Standard of the People's Republic of China DL474.5-92 Guide for Insulation Test on Site - Lightning Arrester Tests. The metal oxide arrester tester can be also used for factory and acceptance tests. Zinc oxide arrester tester Technical Indexes: Range of reference voltage input (peak): 10V-200V Measurement range of full leakage current (peak): 100uA-10mA Measurement range of resistive current (peak): 100uA-10mA Measurement range of capacitive current (peak): 100uA-10mA Measurement range of angle: 0·-90 Power consumption: 4W System measurement accuracy: ± (reading 5% + 5 words) (not more than 2mA for harmonic current)
Send InquiryCHAT NOW Product Details Product introduction Series resonance device is mainly designed and manufactured for communication voltage endurance test of 11kV/30MW hydro-generator. Two separate designs are adopted for reactor. Series resonance device is mainly composed of frequency conversion control power supply excitation transformer reactor and capacitor voltage divider.
Product Description: Transformer GIS SF6 switch CT/PT insulator bus bar cable bushing and others capacitive devices are the common primary electric equipments. The complete set of frequency conversion series resonance test equipment is mainly used for ac withstand voltage test of cross-linked cable hydraulic generator main transformer bus GIS etc. The complete set of frequency conversion series resonance test equipment is mainly composed of frequency conversion control power supply excitation transformer reactor capacitor voltage divider and compensation capacitor (optional).
Send InquiryCHAT NOW Product Details Product description 60KV 2ma DC Cable Test System is designed and manufactured based on the latest China electric power industrial standard DL/T848.1-2004 General Technical Specifications of DC High Voltage Generator. It is mainly applicable for DC withstand voltage tests on high-voltage electrical equipment such as zinc oxide arrester, power cables, transformers, and generators used in electric power departments, mine industry, and metallurgy and iron & steel enterprises.
Applications: Tests for current transformer: 1) Excitation curve and parameters test 2) Turns ratio test 3) Ratio and phase error test 4) Polarity mark check 5) Winding resistance measurement 6) Secondary loop burden measurement 7) Error line curve test for protection CT 8) Transient CT parameters test 9) CT nameplate guess 10) Saturation hysteresis loop curve measurement Tests for voltage transformer: 1) Turns ratio test 2) Ratio error and phase angle error test 3) Polarity test 4) Secondary burden test 5) Winding resistance test Features: 1. Make evaluation for test results according to selected standards. 2. Make word report for test result. 3. Make word reports one time for multi-group test records on the PC. 4. Calculate the ratio errors and phase angle errors at rated burden and working burden in one time test. 5. Compare excitation curves with saved excitation curves in the same window.
