XT/PDD-1A Digital Partial Discharge Detector
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XT/PDD-1A Digital Partial Discharge Detector
I．Application
The series product is a newgeneration of comprehensive testing, analysis, monitoring product for transformerpartial discharge with performance of super anti-interference and mainly appliedto partial discharge detection and on-line monitoring for large powertransformers and other HV electric equipments with a variety of voltage classand capacity.
II. Product Features
XT/PDD-1A seriesdigital partial discharge detector combines technologies of computer, analogelectronic, high-speed signal acquisition, digital signal processing andgraphics display, ultrasonic testing and various anti-interference and networkcommunication.
1. Partial discharge detection
Introduce signals simultaneously from 5 test points (4 ultrasonic channelsand 1 high-frequency current channel) from transformer, and analyze partialdischarge for transformers or HV electric equipments by electrical method andradio-acoustic method;
Measurement, statistics and analysis of partial discharge repetitiondischarge number;
Analysis for single discharge pulse waveform and determine dischargenature;
Gain range: adjust each channel individually, smooth adjust waveformdisplay at any time and not affect measurement results;
Random interference which is not synchronized with power supply can beremoved effectively by anti-disturbance function of relative filteringtechnology;
Band-pass filter adopts technology of analog and digital mixed-filtering, broadbandcan be combined random, which can restrain various kinds of interferenceefficiently.
Function of partial discharge intelligent recognition can automaticallyidentify interference signals and partial discharge signals at specificcondition, and remove interference.
2. On-line monitoring for partial discharge
The on-line monitoring for partial discharge makes the partial dischargemeasuring technology as the core, utilizes integrated testing method ofelectrical pulse and ultrasonic to record and analyze monitoring data in aperiod, and then get figure of discharge change trend. The system shall sendalarm signal when the monitoring data is more than early warning value. Hiddendangers of partial discharge for transformer and other HV electric equipmentscan be found in time by on-line monitoring for partial discharge, so the earlyforecasting fault can be reached in order to avoid malignant accidents.
Adopting broadband current transformer collects discharge signals of HVelectric equipment through neutral ground circuit or core ground circuit andoil tank ground circuit. Adopting many kinds of anti-interference methods torestrain all kinds of outer noise interference and improve signal to noiseratio, thus, the detection accuracy is increased efficiently.
Multi-channel data collection is adopted by system, which can collect anddeal with discharge signals and ultrasonic signals. The system complex utilizestechnology combination of data and simulating compound filtering, dynamicbandwidth filtering, discharge signal intelligent recognition and otheranti-interference technologies.
Inter-city datatransportation can be realized by internet, so the operating condition ofequipment can be known at any place and time, which can lead the remote on-linemonitor of HV electric equipment (such as transformer) realized.
III. Technical performanceindicator
1. Main Processor
CPU: SAMSUNG S3C2410 ARM920T;
MEMORY: 64M SDRAM, 64M NAND Flash;
DISPLAY SCREEN: industrial grade high-brightness 3.5-inchtrue color TFT LCD touch screen, display resolution: 320*240;
External interface: LCD touch screen interface, 5-waysignal input interface, RS-232 interface, RS-485 interface.
2. Working environment:
Environmenttemperature: -10～45℃
Relativehumidity：≤ 95%
3. Measurement channels: 5 channels (4ultrasonic channels, 1 high-frequency current channel)
4. Sensitivity detection: 10pC
5. Sampling accuracy: 12Bit
6. Sampling rate: 20MHz
7. Measurement range: 10pC～1000nC
8. Full-scale non-linearerror: 8%
9. Scale non-linearerror: 5%
10. Scale switch: ×1,×10,×100
11. Measurement frequency band: 3dBboardband 10kHz～1MHz
12. Power supply: AC 220V; frequency 50Hz；power 30W
13. Dimension:length*width*height(300×200×105）mm
- Q: I think that management hired a secrets spy to test me and quiz me just to make sures im doing my jobbed properly, ok? They have been hiding behinds the bushed by the water coolers with binocs and clipped boards and i think they are jottings down secret spying informations on me. I also think they planet a bugs on my desk arena and are secretly recordings and monitorings my every moved, ok? How do I find the bugs and are they recordings me right now? am i being monitaried? I already searched all of the potted plants and drawers in my desks and several other coworkers desks in my arena, ok? I am very scared of bugs and of the peoples watching me in the bushed, ok? I am very worrieds that they are monitaring me right now because i talk alouds when i types into my new headphoned typing deviced set, ok? maybe the bug is in there? ok? how do i get it outs if i am not electronical? will it permenentaly ruin my headphoned? ok?
- You can not win. You have to be on medication. Even if it is true, they are too strong for you. Go and see your doctor.
- Q: e.g. medical equipment
- Best thing to do is use a surge protector and if the equipment is costly enough use one voltage stabiliser/CVT/UPS in addition.
- Q: I am assuming that the car is running when the items are being used.
- Disclaimer: i don't understand something approximately autos! I recall whilst i became into youthful, we've been using abode at evening and each and all the lighting fixtures fixtures in my mom's van started out to dim. We made it very almost each and each of ways abode (we've been a lengthy techniques from abode) in the past the van died. It seems that it became into the alternator. You did not say if the automobile will start up back, my guess is that it will not. back, i don't understand something approximately autos, so it could be the battery, yet my guess is the alternator. solid success!
- Q: I am an electrical engineering student ,but I dont know what to do when I graduate. I like music and I want to do something with music. I have heard of audio/sound or acoustic engineering, but I don't know exactly what an audio/sound or acoustic engineer does.
- Audio is a field that many EE's get into. Focus on digital signal processing and/or amplifier design (analog circuits), and see if you can find a class from the physics department on acoustics. Auto-tune was developed by an electrical engineer working for an oil company -- the guy was working on frequency quantization to make it easier to interpret the results of ground-pounding measurements, when he realized the technique could also automatically fix pitch problems in voices. Typical salary for EEs start around $60k/yr.
- Q: during line to ground fault, is there really a current that will flow in the ground, how will the grounding rod help if there is no connection back to the source? please explain how grounding aids tripping of C.B's
- In maximum mainscontinual distribution structures, the impartial is grounded at the substation transformer and usually at the get right of entry to element to human being premises. If a fault takes position which leads to a stay conductor entering touch with an uncovered conductive section of the package, any cutting-edge will bypass to floor and holiday a circuit breaker.
- Q: EMP is a byproduct of a nuclear explosion. It can cook solid state electronics and computers. The great danger is that nuclear air bursts can take down the computers that manage our banking, our record-keeping, and even the ones that manage our automobiles.The military services have taken some steps to protect their electronic systems from EMP, mainly by shielding. However few of our civilian electronic systems are protected in any way from this threat.Obviously there are two ways to deal with it right now. One is to prevent the explosion by deterring a nuclear attack. The other is to find some way to protect our senstive electronics.What should we do, and what can we do starting today?
- just sho you know most civilian wires and electrical grids are protected. its really simpy to do so, just put foil around the wire. i worked at an electrical contrractor for a year and every thing they use now is shielded. i dont know about the older stuff tho. if your one of those parinoid people buy a diesel car/truck(older one at least) keeps any electrical parts needed(starter/altonator/battery) in a cage, and just line your insulation with copper mesh. *edit* hey john just so you know most of the stuff lost by the soviets was bought by the U.S. from the rogue generals who started selling the stuff. and what wasent sold to the U.S. was bought by england and other safe countrys. i meet an airforce guy who woke up one morning seeing the news say the soviets calapsed and he got a call to get his stuff ready cause he was going to russia to transport a bunch of weapons grade plutonium and other munitions.
- Q: I was wondering, if everyone on earth was to disappear and there was no one to work the electrical grid, how long would it take for 1] The electrical power lines themselves to decay?2] The electrical substations to break down?3] The transformer units to break down?4] Any other electrical equipment to break [such as those boxes on the power lines, as well as ANY other piece of equipment on the electric grid]?P.S- Don't give how long it would take for the power stations to stop running, I already know that. Just answer the four questions I asked.
- The lines are mostly copper or aluminum for the wires themselves. The towers are steel. They would last for decades easily. But lines that run from transformers to homes or neighborhoods could fail earlier. Look at what happens with ice storms in New England. Substations and transformers would last quite long also. But the power stations would last for anywhere from hours to weeks, depending on the degree of automation, and on chance. .
- Q: how we can design the power rating of any electrical equipment. as per my understanding only way is is to change the resistance of coil( winding if motor, filament if lamp).if it is correct then the equipment will be burn if resistance is low for low power rating. Eg. resistance of filament of 10 w lamp is lower than the resistance of 100 w. generally life of 10 w lamp is higher than 100 w. but in electrical point of view the life of high value of resistance equipment will be higher than the low value value of resistance. means, 10w bulb will glow longer time comparatively 100 w bulb. since 10 w bulb has high resistance , so this bulb's life should be higher than 100w bulb. can anyone explain how to design the power rating of any electrical equipment in line of other electrical parameters.
- The resistance of a heater or filament is is chosen to pass the required ampere load at the design voltage. Watts Amps x Volts.
- Q: I am an electrical engineering graduate with very little knowledge of business studiesHowever, I will be beginning my career as a procurement engineer in October.In your own words, what is this?and what duties might it involve?Warm regards,de Róiste BSc
- You will probably be responsible for specifying electrical equipment required for purchase for various projects, for recommending various vendors to obtain bids from, for putting request for equipment bid packages together, and then for making recommendations for which vendor(s) to buy from. Seems like you should have asked your employer what your duties would be.
- Q: I have a 1992 F-150 with a 5.0 302 in it. Last week she started going haywire. My battery wasn't holding a charge, my spedometer was bouncing up and down and my mileage read was coming in and out. I had the diagnostics test done from Auto-Zone that tested your battery, alternator, and starter. They said that my alternator had low power output but everything else was fine. My dad (he's a mechanic) said I had to replace my voltage connectors on my alternator. We did that and she acted fine for about a week. Battery was holding a charge, no problems at all. A couple days ago, my battery light popped on and the battery is not holding a charge AT ALL. I constantly have to charge it. Any ideas on what the new issue could be?
- Batteries do not hold a charge forever. If there is a power drain somewhere in the vehicle, like when you start the engine or run the headlights or the radio, you have to recharge the battery to keep it topped off. Your alternator should be doing this automatically as you drive. I have no idea what you're talking about Voltage Connectors in your alternator, but if your alternator is not keeping up with the demand of the electrical equipment that is installed in your vehicle, it will continue to draw down the charge in your battery until it goes dead. Have your alternator tested under load, and if it shows low voltage again, it's time to replace your alternator.
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XT/PDD-1A Digital Partial Discharge Detector
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
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