The impulse voltage generator intelligent measurement and control system is the latest programmable control system and consists of two parts:
Automatic control of pulse voltage generator program and automatic analysis of pulse signal measurement.
The General Conditions of Use
Altitude: 1000m
Ambient temperature: -5 40 Relative humidity: 90 20 Use of the environment: indoor
Non-conductive dust Grounding resistance 0.5 No fire or explosion hazard
Earthquake resistance: 8 magnitude There is no gas that corrodes metal and insulates
Impulse voltage generator (2)
Supply voltage waveform is the actual sine wave, waveform distortion rate 85% (more than 90% when no load 300PF);
(2)Truncated wave: cut-off time (2-6) 10% s, zero-crossing coefficient 0.3%
(3)Standard operating impulse voltage wave 250 20% s / 2500 60% s,
The impulse voltage waveform parameters and their deviations are in line with the requirements of the national GB311 and GB16927 standards.
7, the lowest output voltage is greater than 10% of the nominal voltage
8. Duration of use: Above 70% of rated voltage, it can be continuously operated every 120 seconds after charging and discharging. It can be continuously operated after charging and discharging every 60 seconds under 70% of rated voltage.
One computer is used for control and waveform analysis 18-inch LCD monitor, strong anti-interference and long life
WINDOWS XP, OFFICE 2003, LabVIEW related driver software, ACE measurement and control software package,built in
Ultra-low frequency dielectric strength testing is another method of power frequency withstand voltage testing, because large-capacity testing is required, and large-scale equipment is not only expensive, but also bulky. The power department did some tests to solve these problems. According to domestic and foreign tests, this product can solve this problem. Not only the size of the instrument is small, but the weight is greatly reduced.
Precautions
When carrying out 35KV cable test, one-phase test is strongly suggested. Voltage is set to 60KV (General Requirements)-78KV (according to the rules needed) and the frequency is set to 0.1Hz, 0.05Hz,0.02Hz and 0.01Hz. The manual said load capacity is the theoretical value, the scene 35KV cable length can reach 3-15 km.
In case the cable is too short(less than 500 meters), the capacitance of the test object is smaller than 0.1 F and the pressure cannot be normally boosted, please connect 0.1 F high-voltage capacitance in parallel way.
Keep high-voltage terminals nylon spin by the above numbers to the corresponding nylon seat, high-voltage lines to ensure good contact , no contact is good , it will cause a discharge , burned the high side . When nylon terminals tightened, pay attention to the intensity, excessive tightening may damage the nylon terminals.
Very Low Frequency high voltage generator 30KV combines advanced technologies such as modern digital conversion, full computer control, automatic voltage increase, voltage reduction, measurement and protection. In the automatic upgrade process, human intervention can be taken care of. The main advantages include full electronics, small size, light weight, large-screen LCD display (clear and intuitive), printer output test report, and easy use.
VLF high voltage generator 60KV.The capacity of it is 1/500 of tradition way. Greatly simplify testing procedures, That is why commonly used in the developed , s ministry of electric power entrust Wuhan high voltage research institute to drafting 35Kv and below XLPE insulated power cable ultra-low frequency (0.1Hz) voltage withstand test methods for promoting this approach. The instrument is developed according to made of this need. It can be widely used in cable, large-scale high-pressure rotary motor, power capacitors into AC voltage withstand test.
Power capacitance of single-core XLPE insulated cable (F/km)
0.1Hz -60KV Ultra-Low Frequency High Voltage Generator
Products Introduction
The power department did some tests to solve some problems. According to theories and test results at home and abroad, the 50KV Very Low Frequency high voltage generator withstand voltage test can solve this problem. Its advantages are that not only the test results are the same, but the instrument size is small and the weight is greatly reduced.
output rated voltage power fuse Refer to the following table
VLF high voltage generator 60KV.The capacity of it is 1/500 of traditional way. Greatly simplify testing procedures, That is why commonly used in the developed countries, china ministry of electric power entrust Wuhan high voltage research institute to drafting 35Kv and below XLPE insulated power cable ultra-low frequency (0.1Hz) voltage withstand test methods for promoting this approach. The instrument is developed according to China's made of this need. It can be widely used in cable, large-scale high-pressure rotary motor, power capacitors into AC voltage withstand test.
Power capacitance of single-core XLPE insulated cable (µF/km)
0.1Hz -60KV Ultra-Low Frequency High Voltage Generator
Model
Rated Voltages
Load capacity
Fuse
Weight
Useful
VLF-60
60kV
(peak )
0.1Hz, 0.5 µF
25A
Control 6
HV TANK-I30
HV TANK-II 33
25KV and below the cable Generator
0.05Hz, 1.0 µF
0.02Hz, 2.5 µF
0.01Hz, 5.0 µF
Precautions
1.Please use the STOP button and discharge by rod then shut down the power if you need to discontinue the machines which in the high pressure conditions.Otherwise it will damage the instrument!
2.Please operation it according to the screen instructions.
3.It is a normal phenomenon to see small amount of oil spill after boosting the pressure because the insulating oil in the booster is full, besides, it will not affect your use.
4.When carrying out 10KV cable test, one-phase test is strongly suggested. The voltage shall be 18KV and the frequency shall be 0.1Hz 0.05Hz 0.02Hz 0.01Hz. The manual said load capacity is the theoretical value, the scene 10KV cable length can reach 3-20km.
40KV vlf high voltage generator of this product fully complies with the standards of the electric power industry. Mechanical methods are widely used to modulate and demodulate ultra-low frequency signals, but there is no standard sine wave, some errors in high-voltage part measurement and spark discharge. The product can overcome the above shortcomings.
How to choose the suitable products for test
Please make sure that the capacitance of test products is below the instrument rated capacitance. The waveform will be influence if the capacitance of test products is too small and the instrument can not normally output when it below 0.05µF. 0.05µF capacitor in parallel to auxiliary output. Below is capacitance of some instrument for your reference.
40KV vlf high voltage generator parameter :
Model
Rated Voltages
Load capacity
Fuse
Weight
Useful
VLF-40
40kV
(peak )
0.1Hz,1.1µF
20A
Control 6
Body Boost 50
Used for cable and generator with corresponding voltage
Very Low-Frequency high voltage generator 30KV combines advanced technologies such as modern digital conversion, full computer control, automatic voltage increase, voltage reduction, measurement and protection. In the automatic upgrade process, human intervention can be taken care of. The main advantages include full electronics, small size, light weight, large-screen LCD display (clear and intuitive), printer output test report, and easy use.
Technical Parameter
1 output frequency 0.1Hz 0.05Hz 0.02Hz 0.01Hz
2 Loading capability : Table 1 for reference
0.1 Hz maximum 1.1F
0.05 Hz maximum 2.2F
0.02 Hz maximum 5.5F
0.01 Hz maximum 11.0F
3 accuracy :± (3% of full scale +0.5 KV)
4 voltage waveform distortion 5%
5 condition of use : indoor, outdoor; temperature : -10+40humidity 85%RH
6 power supply AC50 Hz 220V +5%
7 power fuse : output rated voltage Table for reference
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
ZGS type DC high voltage generator used AIPWM technique adjusted the inaccuracy linearity of PWM technology let the instrument precision greatly improved. It is mainly used in the electric power department power department of industrial and mining metallurgy iron and steel enterprise for zinc oxide lightning arrester power cables transformers circuit breakers generators and other high voltage electrical equipment of DC withstand voltage test or DC leakage current test.
Product Characteristics
1ã??Dc high voltage generator adopts high frequency PWM technology to make closed adjustment with high voltage stability, small ripple factor and fast reliable protection circuit. The generator can endure direct discharge by devices of large capacitance. It is of small size and of light weight, convenient for field use.
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 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 0.20F
The total series 3 series
Rated power capacity
The following waveforms can be generated when the load capacitance is 300~5000PF
2±30%/50 ±20%s Lightning impulse voltage full waveï¼?The efficiency of voltage 92%(no-load )
standard impulse voltage cut wave 2~6 The efficiency of voltage 92% (no-load)
The impulsevoltage waveform parameters all meet the requirements of IEC and GB311-97 national standards
Class voltage within 10% ~ 100% rated voltage range positive and negative synchronous range is not less than 20%.
Ignition range 10%ï½?100%
Synchronous discharge rate out of control 2%
Minimum output voltage 10un
Charging voltage instability ±1.0%
Service duration: > over 70% UN rated voltage can operate continuously every 90 seconds. Under the rated voltage of < 70% UN charging and discharging once every 45 seconds can run continuously.
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.
product brief introduction Product Introduction
series is the equipment of testing DC voltage and DC leakage current of water-cooled generator in the situation of water through which completely overcome the problems of long blow water time bottom water hard to dry easy to cause arcing within the coil. The device is light simple wiring and easy to read. Polarization compensation voltage is output directly by the case.
product features Product Characteristics
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.
Product Description
ZGS type DC high voltage generator used AIPWM technique adjusted the inaccuracy linearity of PWM technology let the instrument precision greatly improved. It is mainly used in the electric power department power department of industrial and mining metallurgy iron and steel enterprise for zinc oxide lightning arrester power cables transformers circuit breakers generators and other high voltage electrical equipment of DC withstand voltage test or DC leakage current test.
Product Characteristics
1ã??Dc high voltage generator adopts high frequency PWM technology to make closed adjustment with high voltage stability, small ripple factor and fast reliable protection circuit. The generator can endure direct discharge by devices of large capacitance. It is of small size and of light weight, convenient for field use.
2 Full range of linear smoothly adjusted voltage, with voltage regulation accuracy smaller than 0.1%; voltage measurement accuracy is 0.5%, resolution 0.1kv; Current measurement accuracy is 0.5%, the minimum resolution: control box 1µA, shock resistance current 0.1µA.
3 The generator uses AC 220 V power supply (AC220V±10%, 50 hz±1%), the ripple factor is less than 0.5%, and can be used for all-weather at the site .
4 High voltage multiplier uses Dupont materials for full solid encapsulation, overcoming the inconvenience brought by the air and oil filled equipment. Broad base and outer cylinder of light quality makes it stand steadily and more convenient for maintenance.
5 75% MOA voltage switch button, simple and convenient testing arrester.
6 Over-voltage setting function displays the over-voltage value during regulation process; perfect protection against discharge of over-voltage, over-current and short circuit. This is the best companion for cable experiments.
7 Perfect break line and non-zero potential start protection function protects the operator and samples at any time. This product has overall design of shock-proof control box, concise, clear panel design and voice prompt for operation.
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