High Voltage Pulse Transformers
Pearson Electronics specializes in the design of high voltage pulse transformers. These transformers employ open construction and are intended to be used in high voltage insulating oil. ... This is broken into bubbles which end up in the transformer tank. The core warms up during high average power transformer operation. It can then release air ...
The partial electrical breakdown mechanism by high voltage …
Lisitsyn et al. 2 experimentally verified that the air cavity in rock has an impact on rock breaking, when the high voltage electric field is loaded, the air cavity is broken, and the current is transferred and transmitted to the air cavity, leading to the generation of a lot of plasma heat and high pressure pulse waves, and the pulse pressure ...
Study on Effect of High Voltage Pulse Electrode Spacing on …
In order to study on effect of high voltage pulse electrode spacing on broken concrete physical performance, through four electrode spacing in the concrete crush test, …
Experimental study on dynamic elastic modulus loss of …
In this orthogonal designed research, 27 indoor tests of high voltage pulse discharge (HVPD) for breaking concrete together with the determination of dynamic elastic …
An Experimental and Numerical Study on the Mechanism of High-Voltage …
The energy consumption of high-voltage electro pulse rock-breaking is lower than other rock-breaking technologies as the rock is broken down by the tensile stress, normally, the specific energy of high-voltage electro pulse rock-breaking is 100–300 J/cm 3, but that of rotary boring technology is 600–800 J/cm 3 (Burkin et al. 2009; Ushakov ...
The plasma path development model (PPDM) in rocks
After multiple discharges, the rock will be broken [7, 9]. This indicates that the distribution characteristics of the plasma path determine the distribution characteristics of stresses within the rock, and are closely related to the crushing efficiency of HPDT. ... the high-voltage pulse output by the pulse power supply is loaded onto the high ...
Growth Mechanism of Three-Dimensional Plasma Channels in High-Voltage
High-voltage electric pulse rock-breaking technology has the potential to improve drilling speed significantly. Numerous mechanism studies and laboratory experiments have laid the foundation for developing high-voltage electric pulse rock-breaking technology. However, the mechanism of medium ion channels growing in three dimensions has yet to be fully …
Simulation and Experimental Study on the Rock-Breaking
The thermal energy, water jet, magnetic field force, ultrasonic wave, and laser can be used to generate impact load, in this way, the rock has a high strain and is broken. Among them, high-voltage electric pulse boring (HVEPB) is a novel rock-breaking method developed in recent decades, the principle of which is to apply a suitable high-voltage ...
Analysis of the solid breakdown characteristics under high voltage pulse
For Fig. 6 (c), the particle is not broken under high voltage pulse, while it is classified as electrical breakdown. There are slight fissures from the middle to all sides, which is different with that of electrohydraulic breakdown. It shows that the fissures are growing from the middle to side, so it is classified as electrical breakdown.
High Voltage Pulse Generators
The PVX-4000-2kV is a high voltage pulse generator designed for high impedance capacitive loads and offers the choice between an internal or external power supply option. This unit offers a 0 V to ±2000 V settable output voltage and 2% to 98% duty cycles. With the internal source PVX-4000-2kV, 40 Hz to 30,000 Hz repetition rates are supported.
Pre-concentration of copper ores by high voltage pulses.
High voltage pulse breakage is a comminution method that uses high voltage pulses to initiate electrical breakdown inside an ore particle, generating a strong tensile force to disintegrate the particle. ... As a result all the Syn-15 particles were broken explosively by one high voltage pulse. By contrast, at the same pulse treatment conditions ...
CN212079203U
The utility model provides a high-voltage electric pulse drill bit and a rock breaking experimental device, wherein the high-voltage electric pulse drill bit is positioned right above a rock; the device comprises a plurality of negative electrodes, a fixed negative electrode sleeve for fixing the negative electrodes, a positive electrode, an insulating sleeve, a spring, an insulating handle ...
Study on Effect of High Voltage Pulse Electrode Spacing on Broken
In order to study on effect of high voltage pulse electrode spacing on broken concrete physical performance, through four electrode spacing in the concrete crush test, analysis of electrode ...
PE2003-G Pulser Fault Locator – Tempo …
The TEMPO Communications PE2003-G Pulser Ground Fault Locator identifies the exact location of even the smallest breaks in buried wire and cable insulation by "pulsing" a high-voltage signal that radiates into the ground at the location …
Designing a High-Voltage Nanosecond Pulse Generator
I am attempting to build a high-voltage repetitive pulse generator with the following characteristics: • Output square-wave pulse at 5kV (can reduce to 2kV if impossible or prohibitively expensive) ... **broken link removed** (warning: paywall) says: Power MOSFETs driving a 50 R load can be switched on in less than 3 ns when driven with an ...
Research Status and Prospects of High-Voltage Pulse …
With the continuous development of the geological engineering field, high-voltage electric pulse plasma rock-fracturing technology has become a research hotspot in recent years. It is now widely recognized that this fracturing technology has many application prospects and great economic benefits. Through the research process of this technology, it has proven to be …
Study on Effect of High Voltage Pulse Electrode Spacing on Broken
Study on Effect of High Voltage Pulse Electrode Spacing on Broken Concrete Physical Performance, Zhang Yan, Yushi Yin
Fracture and fragmentation of granite specimen under high-voltage …
The high-voltage pulse technique is considered as a promising method for rock fragmentation in rock engineering. Understanding the fracture modes and fragment distribution of rocks subjected to high-voltage pulses is thus essential. In this work, a circuit system for rock breaking by high-voltage pulses discharge was established. The fracturing effect on granite …
Electrode structural effects on the mechanism of high-voltage pulse …
High-voltage electric pulse rock breaking is based on the principle of liquid electric effect (Yu et al., 2022). At present, most of the high-voltage electric pulse breaking technologies focus on the in-depth study of the rock-breaking mechanism, and to analyze the formation principle of the discharge channel in different solid media (Boev et al., 1997; Lee, 1954), the …
Numerical analysis and experimental research on hard rock …
The purpose of this research was to find the influence of electrodes gap and hard rock types on the breakage effect during high voltage pulse discharge by simulations using the …
High Voltage Pulse Power Solutions
Today SELFRAG is the world leader in the selective fragmentation of solid materials using high voltage pulse power electrical discharges. This technology is the most relevant alternative to conventional crushing and grinding techniques.
A novel and efficient method for resources recycling in …
The instrument used for crushing is the SELFRAG LAB high-voltage pulse crusher from SELFRAG, Switzerland. This uses the principle of high-voltage pulse crushing to disintegrate a mineral and its general structure is shown in Fig. 2. The device includes a high voltage pulse generating device, a reaction tank, and a control panel.
Experimental study on dynamic elastic modulus loss of …
In this orthogonal designed research, 27 indoor tests of high voltage pulse discharge (HVPD) for breaking concrete together with the determination of dynamic elastic modulus of concrete...
Mechanism Analysis of Rock Failure Process under …
To this end, this paper discusses the equivalent circuit of electric pulse rock breaking, the model of shock wave in electro channel plasma, and, particularly, the model of rock failure in order to disclose the rock failure …
Effect of the electrode spacing on dynamic fracture behavior …
In order to study on effect of high voltage pulse electrode spacing on broken concrete physical performance, through four electrode spacing in the concrete crush test, analysis of electrode ...
High voltage pulse-enabled coal desulfurization and deashing …
High voltage pulse-enabled coal desulfurization and deashing – Part 1: Selective breakdown of mineral matter. ... .77 RD) coal particles in each batch subjected to one HVP discharge, over 75% of probabilities were observed that the high-density particles were broken and the low-density particles remained intact, resulting in distinct product ...
Simulation and Experimental Study on the Rock-Breaking
High-voltage electric pulse rock boring (HVEPB) is a high-efficiency rock-breaking drilling technology, which is featured in high rock breaking efficiency and low cost. However, …
High voltage pulse-enabled coal desulfurization and …
Coal desulfurization and deashing are the common challenges that the coal industry worldwide is facing. A new technique is presented in this paper using high voltage pulse (HVP) selective ...
Circuit breaker schematics in a nutshell: Tripping, closing and
As the plunger continues its forward motion, it eventually strikes the latch, causing it to open, as illustrated in Case "c".Subsequently, the pole of the circuit breaker begins to open, as depicted in Case "d", eventually reaching a fully opened position in Case "e".. Moreover, the auxiliary contact of the circuit breaker also opens, discontinuing the supply to the coil.
high voltage pulsating current | PPT
This document discusses high volt pulsed galvanic stimulation (HVPGS), a type of neuromuscular electrical stimulation. It delivers a monophasic twin peak waveform with a high voltage up to 500 volts and short pulse …