Transformer winding deformation test instrument based on the measurement of the characteristic parameters of transformer internal winding the internal fault frequency response analysis (FRA) method which is being developed in developed countries is adopted to make an accurate judgment of transformer internal fault. After the design and manufacture of transformer is completed the line coil and internal structure are determined. Therefore for a multi-winding transformer line coil if the voltage grade is the same and the winding method is the same the corresponding parameters (Ci Li) of each line coil should be determined. Therefore the frequency domain characteristic response of each line coil is determined accordingly and the frequency spectrum of the corresponding three-phase line coil is comparable to some extent. The distribution parameters of transformer windings will change when short-circuit between turns and phases occurs in the test process or collision occurs in the transportation process resulting in the relative displacement of the line coil and the deformation of the line coil caused by electromagnetic tension in the short-circuit and fault state during the operation process. Then it influences and changes the original frequency domain characteristics of the transformer that is amplitude change of frequency response and resonance frequency offset. The transformer winding test instrument developed according to the response analysis method is such a novel non-destructive testing equipment for transformer internal faults. It is suitable for the internal structure fault detection of 63kV ~ 500kV power transformer.
-86 ULT Freezer 730*845*1400mm87/115kg
Volume (L/cu.ft.):338/11.93; Net Weight/Gross Weight:286/306; Temperature Control Rang:-40~-86 Pull Down Time to -86 at 30 4hrs; Ambient Temperature SN (10 to 32); Controller:Microprocessor; Display:7'' Touchable LCD Display; Temperature Sensor:PTC; Compressors:SECOP/2; Insulation Material:130mm PURF, Vacuum Insulation Panel Plus; Outer Material:Painted Steel; Chamber Material:Stainless Steel; Outer Door:Foam, Sealing joint strip with magnetic force; Outer Door Lock Safety door lock and password protection Power Supplier 220V/50/60HZ, 110V/60Hz.
Product Description 450kV 20kJ High Voltage Impulse Voltage Test System for Lighting Test Impulse Voltage Test System is used for the full-wave and cut wave tests of standard lightning impulse voltages for power transformers transformers reactors lightning rods switches bushings insulators and other test products with voltage classes of 35kV and below. Product Characteristics Rated parameter value Rated nominal voltage±450kV Rated voltage ±150kV Rated energy 20kJ Total impulse capacitance 0.25 F The total series 3 series Rated power capacity 1 F
This device adopts advance ARM+FPGA high precision D/A conversion and DDS technologies can set up and regulate parameters of voltage current frequency phase etc in a long period of time via analog closed loop feedback and digital PID control 1. Can be used to test errors and variance caused by voltage current waveform or power factor change for a variety of metering instrument such as energy meter voltmeter ammeter wattmeter frequency meter power factor meter phase meter 2. Can generate distorted wave with 2~32 order harmonic harmonic number order amplitude and phase position to base wave can be controlled by programs 3. Operational amplifier work frequency 40HZ~1kHz good linearity dual output protection High fidelity output signal and high shock-proof ability 4. With RS232 and USB(optional) communication interface for PC connection 5. With aluminum alloy carrying box which look nice and with little weight
1. Function: AC sampling device and sampling RTU (Remote Terminal Unit) calirbation 1) AC/DC analog value input measurement 2) state variables input measurement 3) remote control execution testing 4) remote regulation function testing 5) digital value input testing 6) impulse input testing 2. AC Power source It can output AC voltage AC current accuracy 0.05 class can provide standards of AC/DC voltage/current power phase power factor frequency energy. Output method and output electric quantity can be set arbitrarily 3. Data management It can save search browse print or delete RTU testing data. Calibrated parameters can be saved permanently
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 Insulation boot (glove) withstand voltage is designed and manufactured by our company according to the test procedure of insulated boots (gloves) and in accordance with the opinions of users. Insulation boot (glove) withstand voltage uses automatic (lower) voltage to automatically read out the leakage current of each test item. The whole test process is completed automatically and the test data is automatically printed which effectively solves the irregular test method in the past. This simplifies the testing procedures and improves the testing speed. More reliable identification of the leakage current of the insulated boots (gloves) power frequency withstand voltage and other parameters. It is the ideal equipment for insulating boots (gloves) to ensure the safety of test workers. Its main features: test 6 test items at the same time and read the leakage current of each test item to accurately judge the unqualified test items; the test vehicle is equipped with casters at the bottom for easy movement using a large white light display under strong light Still clearly visible with a one-click shuttle easy to operate with a good interactive experience. product features Product Characteristics 1 automatic and fast: the use of high-fine stepper motor to control the voltage regulator boost process according to the national standard test parameters fully automatic pressure test. After the test starts the instrument automatically closes and automatically boosts the boosting speed according to the national standard. It reaches the scheduled voltage and starts to count and keeps the test voltage. It automatically depressurizes the timer until the preset time. After zero the power is automatically turned off indicating that the test is over. Display each sample leak Current and display the test result 2 full-featured: full Chinese interface work status display simple and clear operation wide application; with status display with reminder function the user can see the status of the device at a glance; rotate the mouse operation all functions can be rotated by one Mouse setting all digital adjustment abandoned the old potentiometer adjustment mode the field is very convenient to use; button directly set the target Voltage leakage Current pressure time application freely 3 intelligent security protection: with Current over the protection of the Voltage. Accurate and fast protection ensuring the safety of personnel and equipment
Product Introduction 3-phase energy meter calibrator introduction: HZ-3521 handheld meter field calibrator is a measurement of electrical parameters power meter calibration wiring judged as one of the high-precision test instrument. Product Characteristics 3-phase energy meter calibrator introduction: TKSX-3 handheld meter field calibrator is a measurement of electrical parameters power meter calibration wiring judged as one of the high-precision test instrument. 3-phase energy meter calibrator technical parameters: Input feature Voltage measuring range: 0 ~ 400V 57.7V 100V 220V 400V fourth gear automatic switching range. Current measuring range: 0 ~ 5A built-in transformer into 5A (CT) files. Clamp transformer for the 5A (small pliers) 25A (small pliers) 100A (the clamp) 500A (the clamp) 400A (tongs) 2000A (tongs) six stalls. (Including medium and large Clamp Meter is optional) Phase angle measuring range: 0 ~ 359.999 Frequency Measurement Range: 45 ~ 55Hz.
This device adopts advance ARM+FPGA high precision D/A conversion and DDS technologies can set up and regulate parameters of voltage current frequency phase etc in a long period of time via analog closed loop feedback and digital PID control 1. Can be used to test errors and variance caused by voltage current waveform or power factor change for a variety of metering instrument such as energy meter voltmeter ammeter wattmeter frequency meter power factor meter phase meter 2. Can generate distorted wave with 2~32 order harmonic harmonic number order amplitude and phase position to base wave can be controlled by programs 3. Operational amplifier work frequency 40HZ~1kHz good linearity dual output protection High fidelity output signal and high shock-proof ability 4. With RS232 and USB(optional) communication interface for PC connection 5. With aluminum alloy carrying box which look nice and with little weight
1. Built-in digital multiple function standard meter with Integrated structure of meter and power source electrical parameters can be read via software 2. adopts DDS technology CPLD and RAM embedded system featured with high stability of signal source output small fineness low distortion 3. RAM system large color LCD display massive information can be seen directly through screen 4. use PWM digital power amplifier with above 90% efficiency and 300KHz carrier frequency to have advantages of low distortion little heating high efficiency 5. Perfect protection function: voltage short circuit alarm open circuit and over load alarm 6. Built-in OCXO for 50KHz high precision impulse output which can be used to calibrate energy meter clock also can test day error/hour segment error when matching with meter calibration software (optional) 7. With 485 communication interface can do various communications test for universal meters
1. Design with touch panel and mask button massive information to see and simple to use 2. built-in standard energy meter for digital closed loop feedback U I �¦ F W VAR VA PF all for reference 3. Perfect over circuit over voltage. short circuit open circuit over heat over load protection 4. Three phase rated current rated voltage can be preset by users 5. Multiple choose of voltage current phase testing point 6. Capable of measuring single phase three phase active power energy meters and reactive power energy meters 7. Large memory for data storage and searching data is very convenient 8. With R232 communication interface for PC control and software upgrade
1. Function: AC sampling device and sampling RTU (Remote Terminal Unit) calirbation 1) AC/DC analog value input measurement 2) state variables input measurement 3) remote control execution testing 4) remote regulation function testing 5) digital value input testing 6) impulse input testing 2. AC Power source It can output AC voltage AC current accuracy 0.05 class can provide standards of AC/DC voltage/current power phase power factor frequency energy. Output method and output electric quantity can be set arbitrarily 3. Data management It can save search browse print or delete RTU testing data. Calibrated parameters can be saved permanently
product features Product Characteristics 1 in light weight 2 good-looking appearance 3 capaciousness 4 strong stability Product Parameter Product Parameters FY96-H Current Transformer Load Box environmental conditions temperature 15 25 humidity
Product Feature 1. Full digital closed-loop servo control, professional multi axis motion control card to ensure smooth motion and high simulation, reduce motion drift and distortion. 2. New modular combination and free & flexible system integration to meet the different needs of customers. 3. High precision and high rigidity electric cylinder drive system and platform combination ensure high rigidity and high efficiency of platform system. 4. Multiple mechanical and electrical safety protection to ensure the absolute safety of the platform system. 5. High response, high speed, high acceleration and low noise to meet the requirements of various operating environments. 6. Friendly human-computer interface, easy to set and easy to operate. 7. Energy saving, easy maintenance and long service life. Advantages *High speed and high precision *Energy saving, long service life *Stable performance *Low maintenance cost, environment friendly. *Waterproof and dust proof *OEM parameters customized platform size *Low noise Application *Flight simulator *Ship simulator *Naval helicopter take-off and landing simulation platform *Tank simulator *Car driving simulator *Train driving simulator *Earthquake simulator * Motion pictures, dynamic 4D entertainment facilities *Game platform, VR *The docking of space spacecraft and refueling docking of air tanker *6-axis linkage machine tools, smart robots *Educational or industrial grade using
Impulse voltage generator is mainly used for impulse voltage test of power equipment such as lightning impulse voltage full wave lightning impulse voltage truncation wave and operating impulse voltage wave to test insulation performance.Impulse voltage generator a power supply device that imitates impulse voltages such as lightning and operating overvoltages.It is mainly used in insulation shock withstand voltage and dielectric shock breakdown and discharge tests. Scope of application: standard lightning shock lightning cut-off wave for transformers reactors mutual transformers and other high voltage electrical appliances high voltage thyristor valve SVC(HVDC) power cables all kinds of high voltage insulators bushing operation shock and all kinds of non-standard shock wave impulse voltage test required by users.Various test waveforms (standard and non-standard waveforms user-generated waveforms) can be generated by a single set of equipment.Field of application: lightning protection and lightning test for quality inspection measurement inspection and supervision organizations power equipment manufacturers railway communications aerospace and aerospace vehicles military research units universities and meteorological departments. 900kV/67.6 kJ Lightning Impulse Voltage Generator Complete Test Equipment for Transformer Reactor Cable
Three Phase AC Voltage Regulator - BRAND - VIJAYANTA, INDIA 1. Study of Three Phase AC Voltage Regulator, Model: TPACâ??408A
Warranty: 12 months Certification: ce Place of Origin: Guangdong, China Brand Name: rawsuns Model Number: Six in one integrated control system insulation grade: H grade IP Grade: IP67 rated capacity: 60kw Maximum capacity: 120kw overvoltage protection: 720V Under-voltage protection: 380V Rated Voltage: 540VDC maximum input voltage: 700VDC Application: 4.5 tons commercial vehicles, light passenger cars
Product Introduction TKJF fit for many products it has high sensitivity high S/N a large screen which has clear testing wave displaying high frequency ellipse scan (the power is less than 1VA). auxiliary zero marking system. The discharge meter has pointer/digital display and linearity /digital function. The amplifier has large dynamic range 9 kinds of frequency band combinations. TKJF is a powerful tool for developing new high voltage electric products and improving the quality of the products. It is also an efficient testing device to judge the work condition of equipments on the work field. This device is used together with model JZF-9 or JZF-10 calibrator. product features Product Characteristics 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 The product combines modern advanced digital variable frequency technology and microcomputer control together therefore it can realize the full automatic voltage boost step down measurement and protection as well as the manual intervention in the process of automatic voltage boost. The full electronic design ensures the small size and light weight. The big LCD screen ensures the clear and visual display and can display the output wave form. Product Characteristics VLF (Very Low Frequency) Testers are suitable for testing power cables transformers switchgear rotating machinery and other electrical apparatus. 1. Data of current voltage wave form can be directly sampled at high voltage side so the data is real and accurate. 2. Overvoltage protection: If the output exceeds the set limit of voltage the instrument will shut-down to protect itself the actuation time is less than 20ms. 3. Overcurrent protection: It is high-low voltage dual protection in the design the accurate shut-down protection can be made according to the set value at high voltage side; If the current on low voltage side exceeds the rated current the instrument will take shut-down protection the actuation time are both less than 20ms. 4. A high voltage output protective resistor is provided in the voltage boost body in the design and this eliminates the need of additional protect
