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'm 14 and I go to a technical highschool, I'm in hvac because I missed electrical by 1 person, if I get the chance should I switch to electrical? I already have my tools and uniform.
- What interests you the most? There is employment in both fields, and both pay good. You'll have to be a journeyman, no matter what before you get a master's license. I would frankly stick with HVAC because you will learn electrical stuff as you go along. I worked as a technician on food service equipment and vending machines for 20 years. There are a LOT of HVAC technicians and refrigeration technicians who also hold electrical licenses, but very few electricians who have licenses in any other area than electrical.
- Q: I found that there was a steady stream of ants (I live in India, and it's summer) flowing into my fridge, water cooler, keyboard, scanner, ups, and god knows what else and I can't understand why ! I have a feeling it's to do with the electricity itself, certain events have convinced me of that fact, but I would really like to know what's going on.
- Even though its summer, I still think they're attracted to the heat disappated by electrical equipment. I've noticed this too, as a cable TV technician, many underground locations who's equipment sheds heat are often the preferred home of ants. This occurs despite summer temps in excess of 100F. for weeks on end. I don't get ants.
- Q: By non related I mean like not a minor in another engineering or computer science. I was thinking about possibly business. What do you think would be the best minor that would give me a better salary/job opportunity?
- I recently graduated from college with a degree in EE. A guy in my fraternity had the same degree with a minor in Business. He works doing sales and marketing full-time. The normal minors are physics and math. I myself decided to try something crazy and minored in Women Studies as a way to meet girls in college. In some classes I was the only man in most of the minor courses. But I got a really good job after graduation, because my boss said I was well rounded. 90% of the engineers at my job have minors in math, physics or computer science. So I stand alone, but I still got the job anyway. I work in the aviation/defense industry. My advice try something different and see if it works for you.
- Q: Do electronic engineers make audio equipment like headphones, amps, and speakers? And do you learn this in engineering schools in college?
- Yes and No. Although all electronic engineers should have the basic knowledge, you can nowadays find that hardware engineers tend to specialise in either digital or analog electronics. A typical digital hardware engineer may struggle, while an analog engineer certainly can design audio equipment. I doubt that electrical engineers could do the job, they are specialised in power distribution.
- Q: I see a a lot of ghost hunting shows where they use something called k2 or kII meters. What are these originally used for?
- K2 is a brand name for a type of electromagnetic field detector used for measuring fields induced by power lines and electrical equipment.
- Q: I payed the bill and put in the shutoff notice for the 18th, not the 16th! Jesus Christ! I still have shite I have to move!
- Extremely po'd. This is why all electrical equipment in my house is now run by little yamsters in kimonos forced to run on a yamster wheel connected to an electromagnet. As incentive to make them run, I unleash my 25 pound tabby cat who will stand behind the wheel making hissing and other sorts of dangerous threatening noises. Usually one set of yamsters lasts about a week, so I save about $50 per month over what would be my electric bill and am on a first name basis with everyone at Yamsters 4 Less.
- Q: whats the correct procedure if you found a piece of faulty electrical equipment?
- Depending on what it is and where it is at, lock it out and tag it out, then notify your boss. If you know nothing about lock outs, notify your boss and Maintenance. Wingman
- Q: ???I recently went into a century tel building and was VERY interested. Does that have anything to do with what an electrical intrumentation technician does? If not please explain to me the difference between some one that is an electrical instrumentation technician would do, and what someone that works at century tel would do. I know this is a lot but Im planning for a major, and after that a career.Thanks!!!
- Ammeter,volt meter,power meter or watt meter,protective relays all these are electrical instruments. Technician repair,install,test, calibrate such equipments But instrument technician electrical is different.He repair, test calibrate pressure gauges, temperature gauges,Level gauges,Flow meters,Process control instruments all working on electrical priniple.
- Q: I know that I need to get an oscilloscope and a power supply but is there something else that I should plan on getting?
- Probably the best tools are a good quality digital multi meter, high voltage Pliers . oscilloscope is pretty expensive and is mostly usefull for Electronics not Electrical. Electronic is the voltages between 0-90 V and everything that you work more than 90V is Electrical and in that rate you must use saftey tools, which have been made for this purpose. If you are an electronics engineer who want to desige and make PCBs you need some softwares like Protel on your PC. if you like to work with Microcontrollers, you need some compiler and programmer specially made to program your microprocessors. A good clean workbench will help you to work properly, so it is better to buy some plastic shelves to put your components in . Don't forget to buy at least two breadboard, they will help you to test your projects before making PCBs, but be aware that Breadboard is not a good thing for high frequency projects. have a good one
- Q: 1. diode2. converter3. transformer 4. mercury-arc rectifierpl provide with explanation
- obviously (3) transformer All the others allow current in only one direction. And i assume the converter is an AC to DC converter.
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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:
- -
OKorder Service Pledge
OKorder Financial Service
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