Transmission Line Test System is a new generation power transmission line frequency parameter testing system. It equips with frequency conversion testing power DFT Digital Filtering Technique which eliminates strong interference from power frequency electric field and ensures the safety of equipment convenient fast and accurate measurement. 1. Quickly and accurately test the positive sequence capacitance the positive sequence impedance zero sequence capacitance zero sequence impedance also can measure the mutual inductance and coupling capacitance between lines ; 2. High Anti-interference ability accurate and reliable measurement; 3. Easy operation equipped with large LCD and American rotating mouse and micro printer 4. Simple wiring only connecting with tested down leads to finish all line parameter measurement 5. High speed micro-controller as inner core integrated structure 6. Fast testing process one sequence parameter testing time is 1 min 7. Supplied with three groups different frequency power supply for selection: 42.5Hz/57.5Hz 45Hz/55Hz 47.5Hz/52.5Hz easily isolate the power frequency and noise wave to ensure high precision measurement of small signals.
High-Performance Industrial Control Computer High performance Industrial control computer is adopted as the controlling computer, through which you can run the windows operating system directly. 6.4"TFT true color LCD display, tracking ball and optimized keyboard are allocated on the faceplate of this tester, which can be used without the external mouse and keyboard. USB interface, 10-100M net mouth and serial communication interface are located on the back plate of this tester, through which you can access data, communicate data and upgrade software conveniently. The whole process and the result of the test will all be showed on the LCD. The English operational interface of the complete set is very friendly and convenient. The tracking ball and keyboard on the faceplate will implement the operation. The operation is simple and convenient, and is easy to be mastered. Operator only needs a little knowledge of computer. Keyboard and mouse interface are also allocated on the faceplate. If you would like to use the external mouse and keyboard, through pluging them with corresponding interfaces, you can operate this tester just like operate a desk-top computer.
Product Introduction TKJB - 1200 Six phase voltage and six phase current can be output, which has made it is possible to be any combination, such as the output mode of the combination of conventional four phase current and three-phase current, six phase voltage mode, six phase current mode and 12 phase output mode. It not only can be compatible with the traditional way of various tests, but also can conveniently carry out a differential test of three-phase transformer. Product Characteristics 1 Meet all field test requirements.The Microcomputer relay protection tester is a standard of six phase current six phase voltage output at the same time the current a/phase 30 voltage125V/phase.Six - phase current in parallel up to 180A.It can not only test the traditional relays and protection devices but also test the modern microcomputer protection especially the transformer differential protection and backup self-switching device the test is more convenient and perfect. 2ã??All kinds of technical indexes have reached the standard of DL/ t624-1997 "technical conditions of microcomputer test equipment for relay protection" issued by the ministry of electric power. 3 Classic WindowsXP operation interface man-machine interface friendly easy and quick to operate;The high-performance embedded industrial control computer and 8.4-inch TFT true-color display with a resolution of 800�?600 provide rich and intuitive information including the current working status of the device and various help information. 4 The native Windows XP system with recovery function to avoid illegal shutdown or misoperation caused by the system crash. 5 The device has an ultra-thin industrial The keyboard and a photoelectric mouse that handles everything just like a PC. 6 The main control board adopts DSP+FPGA structure and 16-bit DAC output which can generate high-density sinusoidal wave of 2000 points per week for the basic wave greatly improving the quality of waveform and improving the precision of tester. 7 High-fidelity linear power amplifier ensures the accuracy of small current and the stability of large current. 8 The Microcomputer relay protection tester with USB interface and PC communication directly without any connection easy to use. 9 Connect to laptop (optional) to run.Laptop computer and industrial computer use the same set of software no need to learn how to operate. 10 It is equipped with the independent auxiliary voltage source output the output voltage is 110V(1A) and 220V(0.6a) respectively.To be used by relays or protective devices that require dc working power. 11 With the function of software self-calibration it avoids the need to open the chassis and adjust the potentiometer to calibrate the precision thus greatly improving the stability of the precision.
At present the contact resistance measurements of the conventional type QJ44 arms widely used in electric power system dc bridge and this kind of bridge test current mA level only it is difficult to find circuit conductor cross-sectional area to reduce defects when measuring contact resistance high-voltage switch electric circuit due to the contact between the oil film and the influence of the oxide layer several times the measured value is big can't reflect real contact resistance.Therefore the standard sd301-88 ac 500kV power equipment handover and preventive test regulations and the new version of preventive test regulations for power equipment stipulate that the measuring current of circuit breaker and isolating switch contact resistance is not less than dc 100A to ensure the accuracy of test results. Micro Ohmmeter is designed in accordance with The implementation standard DL/ t845.4-2004 of The new Electric Power of The People's Republic of China which combines high-frequency switch The Power supply technology and digital circuit technology.It is suitable for measuring the circuit resistance of switch control equipment.The test current is 100A dc recommended by the national standard.The circuit resistance can be measured directly under the condition of current 100A and displayed by digital display.The instrument is accurate in measurement and stable in performance. It meets the requirements of high voltage switch maintenance and resistance test of high voltage switch factory circuit.
At present conventional QJ44 type double-arm DC bridges are commonly used in power systems to measure contact resistance and the test current of such bridges is only mA level and it is difficult to find defects in reducing the cross-sectional area of the loop conductor. When measuring the contact resistance of the high-voltage switch conductive loop the measured value is several times larger due to the influence of the oil film and the oxide layer between the contacts and the contact resistance value cannot be truly reflected. To this end the Ministry of Power standard DL/T845.4-2004 "General technical requirements for resistance measuring devices: loop resistance tester" and the new version of the verification procedures JJG1052-2009 "loop resistance tester straight resistance test procedures" made measurement (isolated The measuring current of the contact resistance of switches circuit breakers etc. is not less than DC 100A and the minimum current maintenance time is not less than 60S ensuring accurate test results. The High Precision Micro Ohmmeter operator panel is ergonomically designed to meet operational habits and uses high frequency switching power supplies and digital circuit technology for the measurement of loop resistance in switch control equipment. The test current is DC 100A recommended by the national standard. The loop resistance can be directly measured under the condition of DC 100A. The test result is displayed by large-screen LCD LCD and has functions of data storage output printing time setting etc. and 50A gear position for users to choose; custom test time maximum The set time is 599S which is much larger than the standard 60S. It is a very stable contact resistance tester with a resolution of 0.01�¼�© in China. The performance exceeds the imported high current micro-ohmmeter. It meets the requirements of on-site high-voltage switch maintenance and high-voltage switch factory loop resistance test in electric power and power supply departments.
At present conventional QJ44 type double-arm DC bridges are commonly used in power systems to measure contact resistance and the test current of such bridges is only mA level and it is difficult to find defects in reducing the cross-sectional area of the loop conductor. When measuring the contact resistance of the high-voltage switch conductive loop the measured value is several times larger due to the influence of the oil film and the oxide layer between the contacts and the contact resistance value cannot be truly reflected. To this end the latest Ministry of Power Standard DL/T845.4-2004 "General technical requirements for resistance measuring devices: loop resistance tester" and the new version of the verification procedures JJG1052-2009 "loop resistance tester straight resistance test procedures" made a measurement ( Isolation) The measuring current of the contact resistance of switches circuit breakers etc. is not less than DC 100A and the minimum current maintenance time is not less than 60S ensuring accurate test results. The High Precision Micro Ohmmeter operator panel is ergonomically designed to meet operational habits and uses high frequency switching power supplies and digital circuit technology for the measurement of loop resistance in switch control equipment. The test current is DC 100A and 200A recommended by national standards. The loop resistance can be directly measured under the condition of DC 100A and 200A. The test result is displayed by large-screen LCD LCD and has functions of data storage output printing time setting etc. and 50A 150A gears for users to choose; custom Test time the maximum setting time is 599S which is larger than the standard 60S; it is a very stable contact resistance tester with a resolution of 0.01�¼�© in China and its performance exceeds the imported high current micro-ohmmeter. It meets the requirements of on-site high-voltage switch maintenance of electric power and power supply departments and loop resistance test of high-voltage switch factory. Product nickname Contact resistance tester switch loop resistance tester contact loop resistance tester contact (loop) resistance tester High Precision Micro Ohmmeter
Leakage Protector Tester is well designed and manufactured for online measuring the leakage operating current leakage non-operating current leakage operating time of the leakage protector; adopt 16 characters blue display it is convenient and intuitive. The range of leakage current is 0~1000mA range of the leakage operating time is 0~999ms. It is a product with high accuracy small size light weight exquisite appearance easy to carry is an ideal tool for a variety of leakage protector in site or in laboratory testing. 1. Handheld type small and esay to operate 2. Can measure single phase or three phase all kinds of leakage protector 3. Auto test leakage operating current 4. Directly test leakage operating time 5. LCD display intuitive reading
With the development of society people have higher and higher requirements for the safety and reliability of power consumption. High-voltage circuit breakers have the dual tasks of control and protection in the power system. The performance of the power circuit is directly related to the safe operation of the power system. The mechanical characteristic parameter is one of the important parameters for judging the performance of the circuit breaker. The Breaker Analyzer is a special instrument developed by the company to meet the needs of various high-voltage switch operating characteristics tests. It can accurately measure low-oil multi-oil vacuum sulfur hexafluoride and other high-voltage circuit breakers of various voltage levels. Mechanical dynamic characteristics parameters. The instrument adopts large screen display Chinese characters prompt man-machine dialogue mode operation Chinese characters display results and printouts with intelligent multi-function accurate data strong anti-interference simple operation small size light weight and beautiful beauty. Product nickname High voltage switch mechanical characteristic tester Switch mechanical characteristic tester High voltage switch comprehensive tester Circuit breaker dynamic characteristic tester Circuit breaker mechanical characteristic tester Circuit breaker comprehensive tester High voltage switch time characteristic tester High voltage switch characteristic tester Switching characteristic tester Breaker Analyzer Switch parameter tester
Product Introduction TKJS Tan Delta Test Set is a kind of instrument with high precision fully automatic measuring the dielectric loss tangent and capacitance of various high voltage electrical equipments in the power plants and substations. The adoption of frequency conversion technology could ensure the accurate measurement in the interference of strong electric field. The instrument is equipped with high voltage step-up transformer. Besides it takes security measures like zero-cross closing lightning protection etc. During the experiment different levels of high voltage ranging from 0.5KV to 10kV are outputted. The instrument has the advantage of convenient and safe operation. product names Dielectric loss tester anti-interference dielectric loss tester automatic dielectric loss tester dissimilar frequency dielectric loss tester anti-interference dielectric loss tester automatic dielectric loss tester
Product Introduction Direct resistance test apparatus is an indispensable experiment project for transformer after handing in pick up overhaul and sub-pick up switch. In general using traditional methods (bridge method and pressure drop method) measurement transformer winding group and dc resistance of large power inductance equipment is a time-consuming and time-consuming work. In order to change this situation shorten measurement time and reduce the work burden of test personnel huatian electric power developed Dc resistance rapid test instrument (hereinafter referred to as direct resistance instrument). It adopts new power supply technology featuring stable performance rapid measurement small volume easy to use high measurement precision and good data repeatability. Measurement transformer around the group and large power inductor dc resistance ideal equipment. Direct resistance test apparatus meets the requirements of DL/ t845.3-2004 with national standard GB6587 "general outline of electronic measurement instrument environmental test" and GB6593 "test rules of electronic instrument quality". product names Dc resistance tachometer Transformer dc resistance test instrument Transformer winding dc resistance test instrument Transformer direct resistance speed meter Transformer direct resistance quick test instrument Inductive load Dc resistance tachometer Inductive load dc resistance rapid test instrument Inductive load dc resistance test instrument Direct resistance test apparatus
Product Introduction Dc resistance around the group of measurement transformer is a very important test project. In the "test regulations of electric power equipment" its order ranks the second in the transformer test project. The "regulations" stipulates that pick up overhaul minor repair change sub-pick up head position fault check and pre-test etc. should be done in transformer. Measurement transformer must have dc resistance around the group whose purpose is: (1) check the welding of line and lead line around the group; (2) check if the pick up touch is good; (3) check whether there is a broken place around the group or leading line; (4) check the correctness of the parallel branch whether there is a few parallel guide lines winding into the winding group or a few broken line situation; (5) check whether there is a short circuit between layers and turns. The interface design of Dc resistance rapid test instrument adopts microcomputer control big screen backlit Chinese liquid crystal screen show operation is simple show clear man-machine interaction interface friendly measurement process and instrument work state prompt is clear and sufficient no operation personnel need to memorize too many procedures; Huatian electric power adopts current source line-based compensation technology with stable test high measurement precision and fast speed improving measurement efficiency and reducing work intensity of operation personnel. Technically "four-end" measurement is adopted to eliminate the measurement error caused by line resistance with pick up contact. Overvoltage protection function can resist electric potential impact. Panel printer can print measurement results quickly (selected). Small size light weight easy to carry. Dc resistance rapid test instrument is applicable to measurement with analysis of various electric transformer transformer winding group and other perceptual low resistance. product names Dc resistance tachometer Transformer dc resistance test instrument Transformer direct resistance speed meter Transformer direct resistance quick test instrument Inductive load Dc resistance tachometer Inductive load dc resistance rapid test instrument Inductive load dc resistance test instrument Dc resistance rapid test instrument
FRC A/D digital kilovoltmeter consists of a high stabilized resistive-capacitive type passive high-voltage divider and a precision digital voltmeter for measuring AC/DC high voltage on the site of electric power systems and in various high-voltage laboratories. Both of them with measuring cable, power supply cord, and operating manual are placed in a portable aluminium case for easy carrying and use. The AC/DC digital kilovoltmetre is composed of two parts of a high voltage divider and a digital kilovoltmetre. The high voltage divider is of a passive resistive-capacitive type, assembled from precision low temperature drift resistors and high quility condensers. Digital kilovoltmeter consists of ture RMS value circuit, peak values measuring circuit and digital voltmeter. Voltage divider is connected to digital kilovoltmeter by a coaxial measuring cable. The high voltage is reduced to sample value by the voltage divider, and be fed to digital voltmeter. Through function selector, the voltmeter can display DC,AC effective(RMS)value, AC peak value, and AC peak/ 2 value with high measuring accuracy and convenience in use.
a) Screen display: high-contrast 3.5 TFT color screen. b) Data storage: 1000 groups of test data can be stored. c) Working power supply: embedded 8.4V lithium battery for 8hâ??s continuous operation. d) Power supply: input 100-240VAC output 8.4V/3A charging time 3 4h. e) Boundary dimension:230 * 120 * 55(mm). f) Instrument weight:1.5kg. g) Environment temperature: -25 45 h) Storage temperature: -35 60 Complete configuration: host machine sensor AC adapter connecting cable and transport case.
1. Electronic control and tune easy to operate. 2. The date of voltage and current are recorded in the panel reading without conversion. 3. One minute timing and tip function. 4. Perfect over-voltage and over-current protection function inside also zinc oxide over-voltage protection outside which ensure safety of generator. 5. Portable design suitable for on-site testing. 6. Four parts separated: control unit Intermediate Frequency Transformer doubler and accessories all packed with special shockproof aluminum alloy cabinet easy to move.
Working Principle When measured piece Cx has partial discharge under testing voltage the circuit will have pulse current which get by the input unit. The pulse signal is amplified by front amplifier and the frequency band is chose by filter amplifier then been amplified to needed amplitude by the main amplifier. The pulse signal will be displayed on oscillograph screen. The pulse value is also sent to the pulse peak meter and displayed immediately. The time window unit chooses a working period of the pulse peak meter during each cycle of testing voltage and it increases the brightness of the relevant displaying area in this time. In this way it can avoid the disturbing of fixed phase. Input discharge volume to the measured piece Cx through JZF series PD external calibrator adjust the fine adjusting knob till the displayed value is equal to the discharge volume the discharge can be read directly and conveniently on the meter without counting. The testing voltmeter will have an over zero mark signal of testing voltage through the voltmeter resistance R and the zero mark pulse will be displayed on oscillograph screen. The testing voltage can be displayed on KV meter.
Product Introduction Designed for the requirements of the equipment it is widely used in the AC withstand voltage test of the 35-220kV class string-type voltage transformer of the power system to evaluate the main transformer from the insulation strength and also to the winding of the motor and the small transformer. Induction test; can also be used as a short-time 150Hz power supply. product features Product Characteristics 1 the company's Triple frequency transformer is simple to operate reliable performance 2 can well meet the needs of transformers transformers withstand voltage
Product Introduction Digital PD Detector Partial Discharge Testing Digital PD Detector Partial Discharge Testing Product Overview The transformer partial discharge detection device and the sensorwith the software using advanced signal processing technology covering a wide range of statistical methods and graphical display mode and coming with highenergy lithium batteries can flexibly achieve the detection of transformer partial discharge signals and ultrasonic signals capable of full range of detection for the transformer's partial discharge. Partial discharge detection location detect the partial discharge changes in the transformer's internal during the operation by examining the partial discharge conditions of the device to analyze the insulating state of the transformer. High frequency current transformers (pulsed current method) an ultrasonic sensor (ultrasonic method). Through a variety of means to suppress various external noise interference it improved signal to noise ratio and the measurement accuracy. product features Product Characteristics Digital PD Detector Partial Discharge Testing Working Condition Altitude 3000m Environmental Temperature -20~60C Relative Humidity 95%
Product Introduction Insulation resistance tester dedicated to the measurement of water-cooled generator test but also can be used for laboratory or field testing insulation testing to do. Output current greater than 25mA. The maximum output voltage of 2500V. Includes high-precision micro-current measurement system digital boost system. Just use a high-voltage lines and a signal line connecting the test product can be measured. Automatic measurement the results from the large screen liquid crystal display and store the results. Product Characteristics First the main features 1. 32-bit micro-controller Chinese user interface easy to operate. 2. Automatically calculates the absorption ratio and the polarization index and automatically save 15 seconds 1 minute 2 minutes 10 minutes to facilitate analysis of data per minute. 3. Output current (2500V the output is greater than 25mA) short-circuit currents greater than 40mA. 4. A fully enclosed high-voltage generator module technology the protection of the internal resistance safe and reliable. Anti-interference ability to meet the EHV substation on-site operation. 5. Automatic discharge test is completed and real-time monitoring the discharge process.
HUAWEI R4850G2 48V 50A Telecom Rectifier Module R4850G2 Brief: The R4850G2 is a digital rectifier that converts the 85~300VAC to 53.5 VDC and possesses the characters of high efficiency, high power density, walk-in start, hot-plug, complete protection, and low noise. The rectifier adopts the latest power monitoring technology, implements the function of monitoring the states of loads and the rectifier status in real time. The output voltage of the rectifier can be adjusted through the host. � 48V 50A Rectifier Features 1) High efficiency: 96% 2) Input voltage range: 85~300VAC 3) Operating temperature range: -40C~75C 4) Total harmonic distortion(THD): 5% 5) Hot-plug 6) Digital control 7) Intelligent electric meter 8) Communication over RS485 9) Adjustment of voltage and current 10) Meet RoHS requirements 11) Passing the TUV,CE,CB,UL certifications HUAWEI R4850G2 50A rectifier Specification R4850G2 Weight: 2.0kg Dimensions: 40.8 x 105 x 281mm R4850G2 HUAWEI R4850G2 48V 50A telecom rectifier module Notes 1. We will ship the item in 3-5 work days after the payment arrive. 2. We will usually ship the item to Worldwide by FedEx/ UPS/DHL. 3. Buyer's responsibility to pay customs fees, duties, import taxes, shipping charge And related charges. 4. We accept the payment through T/T, Paypal, and Western Union. 5. The pictures show you one of the items in stock. But the exact one may be sold before your bidding. So it may not the exact one which you will receive.
ZST-P100 On-line Continuous Temperature Measurement of the Billet End Overview The system aims at the continuous temperature detection of the product obtained from the continuous casting machine. The billets and their surrounding environmental factors such as scale, steam, shielding and other factors, are considered in the scheme design and equipment selection. The accurate detection and real-time transmission of temperature during the billets movement are also considered. The equipment selection Temperature detection The billet temperature detection adopts the two-color integrated high-temperature thermometer produced by Wuhan CenterRise M&C Engineering CO., Temperature measurement range: 600C - 1400C; All components are installed in a sturdy housing for continuous measurement. The optimized treatment is taken for the problems that the semi-finished billets are hindered by steam or other particles (scale) in the environment, and the billets movement and the installation limited field of view. It provides fast, real-time monitoring of high temperature billets. Software Adopting DataTemp software to remotely set and monitor the measuring equipment. Adopting ScanTemp software to analyze and process the temperature data and eliminate invalid signals. Through the software model, the interference factors such as steam and iron scale can be overcome and the actual temperature of the casting billets can be displayed in real time. The features Using Si/Si stack detector, high sensitivity It is easy to use and has sturdy housing, which meets NEMA-4 standard Bidirectional RS-485/DP communication (can be networked), supports up to 32 detection sensors at most With user-defined alarm methods, analog and digital outputs are synchronized Use protective devices and air cooling devices, can withstand high temperature environment Accurate measurement of moving targets or targets obscured by dust, smoke and other particles in the atmosphere Adopt passive cooling apparatus, high cooling efficiency and low maintenance Use software to remotely set and monitor, analyze and secondary process the data, and optimize occlusion measurement The parameters Measurement range 600 1400 Response timw10msc) Spectral response bicolor Accuracy �±0.75% Repeatability �±0.3% Cooling air pressure >0.5Kpa Cooling air flow 24L/min Max.temperature 165 Output signal 485 / DP / 4-20mA Environment standard NEMA4 IEC529 IP65
