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Anonymous users2024-02-06Block diagram of DC high voltage generator.
ZGF series DC high-voltage generator applies the latest power electronics technology, and Huizhuo Power adopts advanced PWM modulation technology and high-power MOSFET devices, which are rectified by intermediate frequency voltage doubling; The generator has the characteristics of small ripple coefficient, stable and reliable output, small size, light weight, and reliable and sensitive internal protection function, and its schematic block diagram is shown in Figure 1.
Fourth, the panel description.
1.Power outlets.
2.Power switch.
3.Power indicator.
4.The "zero" indicator.
5."Overvoltage" indicator.
6."Overcurrent" indicator.
7.Current display meter.
8.Voltage display meter.
9.Time relays.
10.Turn on the button at a regular interval.
11.Voltage display meter.
12.Grounding binding posts.
13.Signal output socket.
14.Measure the input socket.
15."Start" button.
16."Stop" button.
17.Voltage setting knob.
18.Voltage coarse adjustment knob.
19.Voltage trimming knob.
Description of the high-pressure pressure doubling box.
1.Top hats.
2 Equalizing rings.
3x pressure cylinder.
4 chassis. 5 Grounding posts.
6 Signal input socket.
7 Measuring output socket.
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Anonymous users2024-02-05ME-ZGF series DC high-voltage generator adopts PWM high-frequency pulse-width modulation technology closed-loop adjustment, with high voltage stability, small pulsation factor and fast and reliable protection circuit, the display unit adopts a green backlight with a wide temperature LCD screen, which can clearly display data in strong light and darkness. The high-voltage unit is made of DuPont's new filler material, which makes the product performance more stable and reliable. The products are widely used in power generation and power supply departments, power transmission and transformation engineering companies and large factories and mining enterprises, preventive experiments and scientific research institutes as DC high-voltage regulated power supplies.
The main technical characteristics of the product.
1. Closed-loop adjustment of PWM high-frequency pulse width modulation technology is adopted, which has high voltage stability, small ripple factor, and fast and reliable protection circuit, which can withstand direct discharge of large capacitance samples to the ground, and the whole machine is small in size, light in weight, and convenient for field use.
2. Linear and smooth voltage adjustment in full scale, and the voltage adjustment accuracy is better; Voltage measurement accuracy, resolution; Current measurement accuracy, resolution.
3. The power supply is AC 220V (AC220V 10%, 50Hz 1%), the pulsation factor is less, and it can be used around the clock at the work site.
4. The high-pressure pressure doubler is encapsulated with DuPont material all-solid, which overcomes the inconvenience caused by air and oil-filled equipment. The wide base has a light outer cylinder, which is stable and easy to maintain.
Voltage conversion button, testing arrester is simple and convenient.
6. It has the function of over-pressure static setting, and the over-pressure value is displayed during the adjustment process; It has perfect over-voltage, over-current, and short-circuit discharge protection functions, and is the best companion for cable experiments.
7. It has perfect disconnection and non-zero potential start protection function, so that the operator and the sample can be safely protected at any time. The overall design of the shockproof control box has a simple and clear panel design and operation sound prompts.
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Anonymous users2024-02-04DC high voltage generator has a variety of protection functions, such as: low voltage overcurrent, low voltage overvoltage, high voltage overcurrent, high voltage overvoltage, zero protection, non-grounding protection, etc. Fault sampling uses a special sensor, the action time is nanoseconds, and the optical isolation element is also nanoseconds, and the action time is generally 10 microseconds to completely shut down the DC main circuit.
Through the nanosecond optical isolation element and the nanosecond analog switch, the whole process will cut off the push signal of the power amplifier circuit within 2 microseconds to ensure that the power device will not be damaged in the case of output short circuit.
This instrument adopts high-frequency voltage doubling circuit, and applies the new PWM pulse width modulation technology and voltage and current double closed-loop feedback technology to improve the power supply regulation rate and load regulation excitation rate to achieve high voltage stability and small lead wave. The use of imported high-power IGBT devices and their driving technology eliminates switching interference and realizes the high quality and portability of DC high-voltage generators. The imported high-frequency and high-voltage rectifier diode is selected to make the doubler cylinder more compact and lightweight, and improve the efficiency of the whole machine.
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Anonymous users2024-02-03DC High Voltage Generator is a new generation of portable DC high voltage tester designed and manufactured according to the new China Electric Power Industry Standard DL DC High Voltage Generator General Technical Specifications. It is mainly suitable for the power departments of electric power departments, industrial and mining, metallurgy, iron and steel and other enterprises to carry out DC withstand voltage tests on high-voltage electrical equipment such as zinc oxide arresters, power cables, transformers, generators, etc.
1. Technical characteristics:
GDZG-300 (400KV-3MA) DC High Voltage Generator.
The chassis adopts an international general chassis, which can be used vertically and horizontally.
The intermediate frequency voltage doubling circuit is adopted, and the PWM pulse width modulation technology and high-power IGBT device are applied.
The output voltage is highly stable and the ripple coefficient is 1% smaller.
Smooth voltage regulation in full range, good voltage adjustment fineness, adjustment accuracy, stability 1%, voltage and current error 1% (reading, current error 1% 1 word.
The boost potentiometer is zero-rise and has a voltage scale indication.
The function button is convenient for zinc oxide arrester test, with an accuracy of 1% reading.
The overvoltage protection is set by drawing the code, which is clear at a glance and has an error of 1%.
The new material is used for doubling, which is lightweight and strong. The surface is coated with special insulating materials, with good electrical properties and strong moisture-proof ability.
Folding support feet, large diameter area, good stability performance.
40kV integrated design, high-voltage mopping cable lead-out, convenient for field testing.
The products meet the technical requirements of DL, and have been tested by the electrical equipment quality inspection and testing center of the Ministry of Electric Power, and the enterprise standard is strictly implemented.
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Anonymous users2024-02-02A device that uses an electrical circuit to generate a DC high voltage.
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Anonymous users2024-02-011. The instrument is safe and convenient to operate, the full microcomputer device, built-in imported high-performance CPU, high reliability, after setting the test value according to the interface prompts, there is no need to manually contact the tested equipment, and the instrument automatically completes the test, so that the tester is far away from the high-voltage circuit and ensures his personal safety.
2. The output capacity is large, the maximum output voltage of the volt-ampere characteristic test is up to 1000V, the maximum current of the conversion ratio test is up to 600A, and the output capacity of the instrument is 5KVA.
3. Optional accessories include external booster, external booster, external voltage regulator, the maximum voltage of external booster can be increased to 2000V, 3A, external booster can be raised to 1000A, and the maximum output of external voltage regulator can reach 1500
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Anonymous users2024-01-31The DC high-voltage generator applies the latest power electronics technology, and Wuhan Dingsheng Power adopts advanced PWM modulation technology and high-power MOSFET devices, which are rectified by intermediate frequency voltage doubling; ZGF series DC high voltage generator has the characteristics of small ripple coefficient, stable and reliable output, small size, light weight, and has reliable and sensitive internal protection function. There are reliable over-voltage, over-current and zero static closing protection functions, ZGF series DC high-voltage generator with double voltage latching button function, and equipped with time relay, the DC high-voltage generator can be set in the test timing sound alarm, the whole tester is easy to carry, easy to operate, safe and reliable, especially suitable for power maintenance departments, power plants and power maintenance units field test.
1. The DC high-voltage generator has a small ripple coefficient, stable and reliable voltage output, no noise and good reliability.
2. ZGF series DC high-voltage generators have over-voltage, over-current, zero-voltage start and fault protection functions, and the voltage protection value can be set and displayed intuitively.
3. The voltage and current are digitally displayed, and there is a reading when the power supply is turned on, which is convenient for monitoring the output status.
4. The DC high-voltage generator has a double voltage conversion, which is convenient for testing the zinc oxide arrester.
5. ZGF series DC high-voltage generator products are compact in structure, small in size and easy to carry.
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Anonymous users2024-01-30The DC high-voltage generator adopts the intermediate frequency voltage doubling circuit, and the new DC high-voltage generator applies PWM pulse width modulation technology and high-power IGBT devices, and adopts special shielding, isolation and grounding measures according to the electromagnetic compatibility theory. The DC high-voltage test is of high quality, portable and can withstand rated voltage discharge without damage. DC high voltage generators have a variety of protection functions, such as:
Low-voltage over-current, low-voltage over-voltage, high-voltage over-current, high-voltage over-voltage, zero protection, non-grounding protection, etc. Through the nanosecond optical isolation element and the nanosecond analog switch, the whole process will cut off the push signal of the power amplifier circuit within 2 microseconds to ensure that the power device will not be damaged in the case of output short circuit.
It refers to the high-voltage power supply mainly used in insulation and leakage detection, and there is no strict difference between high-voltage power supply and high-voltage generator. DC high-voltage generators are the first in the industry to adopt a segmented structure, which can be used for both high and lower voltage levels and maintain their accuracy. Taking 100 200kV 2mA into two sections as an example, it can be used as 100kV 2mA in a single section, which can be used for DC high-voltage test of electrical equipment in 35kV and below systems, which can ensure the accuracy of measurement and avoid large horse-drawn trolleys; When used in two sections, it can be used as 200kV 2ma.
It can be used for DC test of 220kV sectional, 110kV and below zinc oxide arrester and DC withstand voltage test of cross-linked cable. It truly achieves a dual-purpose machine, which greatly facilitates the use of on-site users. It is mainly used to study the dielectric strength of electrical equipment, DC varitron and converter station equipment and insulating materials under DC high voltage, DC power line, corona and ion current and their effects, and to carry out leakage current tests of AC and DC power equipment.
In addition, it can also be used as a power supply for other high-voltage test equipment such as impulse voltage generators, inrush current generators, oscillation circuits, etc. It is also widely used in other scientific and technological fields, such as physics (accelerators, electron microscopes, etc.), electro-medical devices (X-rays), industrial applications (exhaust gas sedimentation, electrostatic painting, etc.), or electronic communications (television, radio stations).
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Anonymous users2024-01-29As shown in the figure below, the input of the high-frequency transformer receives the medium and high voltage signals and achieves the output of DC high voltage through the voltage doubling rectifier circuit (rectifier silicon stack D and capacitor C). In the figure, R1 is the current measurement sampling resistor, and the current flowing through R1 is the current flowing through the load RL. R2 and R3 are high-voltage measurement resistors, and the two together constitute a voltage-dividing circuit (R3 is a high-voltage arm, and R2 is a low-voltage arm).
The assembly structure of the DC high-voltage generator is: R1 and R2 are placed in the DC high-voltage generator control box, and R3 is placed in the doubler cylinder with medium and high frequency transformers and voltage doubling rectifier circuits. The medium and high frequency voltage signals output by the control box are connected to the doubler cylinder through a special cable.
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Anonymous users2024-01-28High voltage generator (abbreviation: HVPS), also known as DC high voltage generator, is the traditional name of high voltage power supply, refers to the high voltage power supply mainly used in insulation and leakage detection, and now there is no strict difference between high voltage power supply and high voltage generator.
The high-voltage generator, also known as the DC high-voltage generator, is the traditional name of the high-voltage power supply, which refers to the high-voltage power supply mainly used in insulation and leakage detection. English: high voltage power supply Abbreviation:
hvps。The high-frequency DC high-voltage generator adopts a high-frequency voltage doubling circuit, applies the latest PWM high-frequency pulse-width modulation technology, closed-loop adjustment, and adopts large voltage feedback, which greatly improves the voltage stability. High-power IGBT devices with excellent performance and their driving technology are used, and special shielding, isolation and grounding measures are adopted according to the theory of electromagnetic compatibility.
The DC high-voltage generator is high-quality, portable, and can withstand rated voltage discharge without damage.
The VLF ultra-low frequency high voltage generator combines modern digital frequency conversion advanced technology and adopts microcomputer control. Boost, buck, measure, protect are fully automated. And manual intervention can be carried out in the automatic boosting process.
Due to the full electronic. It can be widely used in AC withstand voltage testing of cables, rotating electrical machines, and power capacitors.
The DC high-voltage generator adopts the intermediate frequency rectification filtering technology, which solves the shortcomings of the large ripple coefficient and unstable waveform of the power frequency DC high-voltage generator. DC High Voltage Generator The latest research, design and manufacture of new scientific and technological products, suitable for the power sector, power departments of factories and mining enterprises, scientific research units, railways, chemical industries, power plants, etc. to carry out DC high voltage tests on zinc oxide arresters, magnetic blowing arresters, power cables, generators, transformers, switches and other equipment, is the most ideal replacement product in the new century. The intelligent DC high-voltage generator applies a new generation of PWM high-frequency pulse-width modulation technology, adopts high-end intermediate frequency voltage doubling circuit, high-performance closed-loop adjustment, and high-voltage feedback, which greatly improves the voltage stability.
According to the national standard of "General Technical Conditions for Portable DC High Voltage Generators" (ZGF24003-90), on the basis of the original DC high voltage generator, it conforms to the theoretical principles of daily electrical electromagnetic compatibility, adopts the principles and methods of special shielding, isolation and grounding measures of the national standard method, and uses high-power IGBT devices and their driving technologies with better performance, modern electronic high-tech chips, intelligent operation, and is a more truly intelligent and portable intelligent DC high-voltage generator. Further extend the range of withstand voltage without damage.
Clean the chicken first and marinate it in cooking wine for a while; Then add cold water to the pot to heat, when the temperature rises and it is not hot, add the chicken to blanch, and put some green onions, ginger and garlic into the pot until the water boils, this step can effectively remove the fishy smell of the meat; Slowly heating cold water will be more effective in removing the blood foam in the meat, blanching the meat should be in a pot under cold water, because the meat contains blood, boiling the pot will make the blood in the capillaries on the surface of the meat suddenly coagulate, and can not make the blood inside the meat be gradually forced out, thus affecting the taste and color of the meat. So it is unscientific for many people to blanch meat with boiling water. >>>More
The high-voltage package of the display is basically the same working principle as the TV, and its main role is to generate anode high voltage, and provide various voltages such as focusing, acceleration, and gate. Note that the energy provider of the deflection current is not the high-voltage packet, but the S correction capacitor, when the line tube is cut-off, the B+ voltage is charged to the S capacitor through the high-voltage package and the deflection coil, and the current only passes through the high-voltage packet. Due to the high voltage package working in the state of high temperature, high frequency, high voltage and high current, coupled with the influence of factors such as humidity or dust in the external environment, the probability of damage to the high voltage package is high. >>>More
The bird is both feet on a wire, the potential of the high-voltage wire is very high, but the potential of the transmission line at this end is about the same as the potential at that end, the voltage added to the two ends of the wire in the transmission line is not large, so as to ensure that the electrical energy is rarely lost on the wire, with the wire as a resistance, because the wire is hundreds of kilometers or even thousands of kilometers long, and the voltage added at both ends of the wire is hundreds of volts, calculate the distance of the bird's feet, the potential difference between the bird's feet can electrocute an ant has to put a question mark, we say that the high-voltage electricity is tens of thousands of volts that is the potential of the wireWhy are people electrocuted? Standing on the iron tower, the iron tower is connected to the ground, so it is like connecting people and the ground, and the electric potential of the ground is zero. Then the potential difference between the wire and the ground is the potential of the wire, isn't it normal to electrocute people? >>>More
It plays the role of filtering, because the AC after rectification is pulsating DC, and the charge-discharge effect of the capacitor is required to change the pulsating DC into a stable DC.
Can play,Vista uses DX10,The effect is a lot better.,But I advise you not to play something.,The high-voltage version is generally not too stable.,Plus Vista's compatibility is not too good......