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
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
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.
1 the company's Triple frequency transformer is simple to operate reliable performance
2 can well meet the needs of transformers transformers withstand voltage
1. 5 LED digitally display output by actual value or by percentage
2. AC/DC current output range: 0~100 uA ~500uA ~2mA~5mA~20mA ~50mA ~200mA ~500mA ~2A~5A~20A~30A(optional)~50A(optional)
3. AC/DC voltage output range: 0~200mV~1V~2V~5V~10V~20V~50V~100V~200V~500V~1000V
4. Three AC frequencies for option: 50Hz 60 Hz 400 Hz
5. Auto protection or manual resetting function for over load
6. Over load rang is 10% for each level of voltage current
7. Clip-on transformer testing: matching with our product of standard coil measuring range AC 0~750A ( above 1000A for part of meters) DC 0~1000A error: ±0.3%
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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
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
Product Introduction
Dc Hipot Test Equipment for the power supply department, for example: DC HV withstand and leakage current test in power cables, the conductance current and 1mA reference voltage of magnetic blow out arrester and zinc oxide arrester test.ZGF DC Hipot Test Equipment supplies 60kV to 400kV from 60kV to 400kV is DC high voltage power supply equipment.It has functions of switch on protection under 0 voltage,over voltage and over current protection.They are high stability and reliability. ZGF is easy to operate , small in size and light in weight.
product features Product Characteristics
1 Series dc high voltage generators have small ripple coefficient stable and reliable voltage output no noise and good reliability
2 with overvoltage overcurrent zero voltage start and fault protection voltage protection value can be set display intuitive
3 voltage current using digital display and power supply has a reading easy to monitor the output status
4 with 0.75 times voltage conversion easy to test zinc oxide arrester
5 the product structure is compact small size easy to carry
product brief introduction Product Introduction
The Test Transformer(ac dc hipot tester) calls the booster it is the basic test equipment used by the power station supplying and distributing the electrical power system and the scientific research unit. Which used in the insulated intension test on all kinds of electrical products electrical equipments and insulated materials testing the insulated level of products discovering the insulated objection of quizzee scaling the capacity burdened voltage.
AC HV Testing Transformer Classification:
There are four kinds of high voltage testing transformer according to the medium points:
1. Oil-immersed high voltage transformer test: large capacity, cheap, convenient maintenance, mainstream products.
2. Inflatable high voltage test transformer : interrupter resistance, and light weight.
3. Dry type high voltage testing transformer: light weight, light volume, can run backward, price expensive.
4. Series type high voltage testing transformer: small volume, low voltage, light weight, easy to transport and install.
warning
1. Test transformer should be applied into use with control unit as for how to use control unit please see Operation Manual of Control unit.
2. Screening wire should be applied into the direct current test to avoid straying leakage. After test discharge rod is applied to release the restored electricity.
3. The end of high frequency voltage filtering capacitance should be connected with the ground wire together with crust of control unit to connect with the earth wire.
4. The whole test should follow the regulation in high frequency voltage test site should pay more attention to the safety of equipment and body.
Microcomputer relay protection tester also known as three-phase microcomputer relay protection tester, three-phase microcomputer relay protection tester is a special power relay protection tester.Three-phase microcomputer relay protection tester has 4 phase voltage 3 phase current output, suitable for various types of relay protection device test.Three-phase microcomputer relay protection tester adopts high speed and high performance digital control processor as control microcomputer, and the software uses double precision algorithm to generate arbitrary high precision waveform of each phase.Because of the integrated structure, each part is closely combined, the data transmission distance is short, and the structure is compact.It overcomes the problem of low number of output waveform points caused by long data communication line and narrow frequency band in the measurement and control instrument directly controlled by laptop computer.
Technical parameter :
AC current output
Phase current output (effective value) 040A
Three merge current output (effective value) 0120A
Phase electric length time allows work value (effective value) 10A
Phase current maximum output power 420VA
Maximum output power at the maximum output of three 900VA
Working time is allowed when the maximum output of the three mesh is output 10s
Frequency range (fundamental) 201000Hz
Harmonics 1 20 times
AC voltage output
Output accuracy Level 0.2
Phase voltage output valid value 0120V
Line voltage output valid value 0210V
Maximum voltage output value 0240V
Phase voltage / line voltage output power 80VA /100VA
Frequency range (fundamental) 201000Hz
Harmonics 1 20 times
volume and weight Dimensions 365*300*165MM
Stand-alone weight 15.5KG
Light digital relay protection tester characteristics; 4/6/8 pairs of 100M Optical Fiber Communication Ethernet interface, can send and receive the sampling value of the IEC61850-9-1 / 2 frame format, Goose, IEEE-1588 packets; more support 24 sets of SV packets +64 groups of Goose packets simultaneously; 3/5 pairs of 2 ~ 10M fiber serial port, can send and receive IEC60044-7 / 8 FT3, national network expansion FT3, Xu Ji privately owned FT3 frame format sampling value " 12 road simulation small signal output, provides testing of protection devices input for small signals;
3 phase capacitance and inductance tester is developed for the problems of capacitance value, and it solves the following problems
Field measurement capacitor needs dismantling cables, not only the big workload but also easy to damage the capacitor.
Low capacitance meter output voltage causes the fault detection rate is low.
The instrument has characteristics of small measured workload, fast and simple, stable performance, high measurement accuracy, high fault detection, etc.
Reactor inductance measurement.
Technical parameters
Working power supply
Rated voltage power frequency of 220 V10
The rated frequency 50Hz
The rated output 2V 20V 500VA
Equipment normal working conditions
Environmental temperature 10 50
Relative humidity 90
Display and print mode LCD display with Chinese characters
Panel high speed printer
Shape weight 370 260 220 mm 15 kg
5. Work principle as shown in figure 1
3 phase capacitance and inductance tester
Feature
The inductance capacitance tester adopts the bridge circuit structure, the standard capacitor and tested capacitor as two arms of the bridge circuit. When conducting the capacitor capacitance value measurement, test voltage applies on the standard capacitor and tested capacitor at the same time. Processor obtains capacitance value of tested capacitor by sensors with acquisition the current signals through the two capacitors after processing.
Due to adopting the standard capacitor, tested capacitor synchronous sampling technology, it may not affected by the power supply voltage fluctuation; Combined with the measurement process is fully automatic, which avoids the error due to manual operation, so it has the characteristics of good stability, good repeatability, accurate and reliable, the machine has tested object automatic identification and short circuit protection function.
Generator Rotor AC Impedance Testing Instrument is a special instrument for determining whether the turn-to-turn short circuit exists in the generator rotor winding, and can manually and automatically unidirectionally or bidirectionally measure many parameters of the generator rotor such as voltage, current, impedance, power and rotating speed.Generator Rotor AC Impedance Testing Instrument is the latest enhanced AC impedance tester launched by our Company. The instrument adopts the state of the art high speed microprocessor technology with more powerful functions, preferable performances and more convenient use. The Tester has a series of characteristics such as high reliability, easy operation, high test precision, being compact and lightweight and etc., and currently is in the domestic leading level.
The current booster is used on checking current transformer,to be the power source supply once current for current transformer or to be other 50Hz single phase current source device.
Technical index
Temperature
Humidit
Capacity: 20kVA
Specification
Weight: 75Kg
Allow long-term work on the rated current
Allowable overload 1.5 times,30 minutes of continuous work.
Feature
This PSLLQ is make up of input Winding(220V), output winding below 100A and CXRZ.
Output current indicated on the nameplate is defined the rated current that through winding allow to pass.When CX many circles, the rated current its permitted to pass through will inversely decline.
The value which ouput capcity divided by product of output current and each circle voltage was the biggest circle number allowing.
The current booster is designed to provide the primary current power supply for the current transformer when verifying the current transformer or as other 50HZ single-phase power equipment. The current booster for transformer verification is suitable for power departments such as power testing, power measurement, and power maintenance. The current booster is developed and produced according to the industry standard of transformer error testing, and is used as a current transformer to verify the primary current of the current transformer. The output current can be customized according to customer requirements. The lifter is equipped with casters for easy on-site movement.
Single phase standard power supply is suitable for power department, quality control department, research units, institution of higher learning, electric energy meter, power supply management, load control, power quality, reactive power compensation device and production of the enterprise and so on. It can be as single phase voltage source, current source and power source.
Electrical parameters
Electrical parameters
Accuracy class
0.05, 0.1
Power supply
Single phase AC 85-265V, 50 60 Hz
AC Voltage output
Range
57.7V 100 V 220V 380V, Switch automatically max 500V
Current Transformer Analyzer is new product created after widely adopt customers advices and deep theoretical study. It is based on the automatic FA Series Transformer Tester General which is produced by our company that is widely acclaimed and applied. The adoption of high-performance DSP and ARM, advanced manufacturing technology ensure a stable and reliable product performance, full-featured, high degree of automation, high efficiency, in the domestic leading level, they are the professional testing equipments for transformer check in power industry.
The digital three-phase shifter is a portable electrical tester composed of transformer phase shifter, digital phase display, voltage current digital display, output voltage adjustment, coarse adjustment, fine adjustment, and power supply, etc. The digital three-phase shifter combines the transformer phase phase technology with digital measurement techniques, which can be adjusted at any angle in the range of 0 to 360 , which has high precision, reading. Accurate intuitive, the voltage output is adjustable, the digital three-phase shifter structural components use independent fixtures, firm and reliable, full seals, easy to carry in the field and on-site use.
Technical parameter
Input voltage Three-phase four-wire 3 380 (220) V 50Hz
The output voltage Three-phase four-wire 3 (0 380) / (0 220) Triple semi-digital display, accuracy: level 1
Output current Communication 0 ~ 20A Triple semi-digital display, accuracy: level 1
Maximum output capacity 3 300VA
Three-phase coarse Ambient temperature: 0 360 Move 30 per step
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