• 72.5~550KV GIS Current Transformer System 1
72.5~550KV GIS Current Transformer

72.5~550KV GIS Current Transformer

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
10 unit
Supply Capability:
300 unit/month

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Product model: 72.5 ~ 550 kvgis using current transformer
Product features: the product is 72.5 ~ 550 kv metal as a 

current transformer in a closed combination electric appliance 

components.I company of current transformer winding executive standard:
GB1208-1997 "current transformer" (China standard)
Mutual - 1:2003 "Current transformers (the international 

electrotechnical commission standard)
British Standard BS 3938-3938 in X (British Standard)
IEC44-6-1992 Requirement for protective cruuent transformers
For transient performance (the international electrotechnical commission standard)
GB16847-1997 "protective current transformer transient 

characteristic technical requirements" (China standard)
ANSI/IEEE C57.13 transformer technical requirements (American standard)
Technical parameters:
Rated primary current: 100 ~ 100

Q: Can electrical equipments draw currents or they allow too flow current through them?
I wondered the same thing when I was learning about electricity. Neither, and both is the answer. Voltaic pressure forces the flow, IF there is a circuit to flow through. And if there is a circuit, that circuit will have some resistance, which will 'fight' to resist that flow. Current is 'drawn' only from the viewpoint of the electrician in the field, who sees current flowing only when he hooks up a load and completes a circuit.
Q: ever had your electrical equip. tripped off by GFCI RECEPTERSdid it damage your hard drives, toasters, microwaves ect.?
shouldn't damage electronic devices unless when the GFI trips it breaks the neutral first and applies only a live wire to the device, that could damage electronic devices. It could be possible but may be rare.
Q: hi i have a black glass tv stand which makes the dust very visible, i normally wipe with a cloth, but i don't really want to do this like every time it piles up with dust, is there a thing which removes dust automatically (please give me a link either OKorder or which supports pay-pal) thank you
You could turn your Living room into a clean room, and put on a bunny suit every time you go into it!
Q: i need what to do in a bad thunderstorm
definite. The turbulence interior a thunderstorm could nicely be very severe. in certainty, as a thunder cloud (cumulonimbus (cb)) is turning out to be, the air interior is being pushed up and large velocity and carried with it water particules. To fly with the aid of a cb is risky for the reason which you will positively stumble upon severe icing situations. Icing could reason subjects with the engines, besides as with the raise produced via and the soundness of the plane. it could additionally block static and pitot vents (required for various contraptions interior the airplane) whilst a thunderstorm is energetic, the water is in certainty too heavy and starts falling down interior the path of the cloud as hail or rain, yet this additionally reasons downdrafts (severe velocity wind transferring downwards) alongside with the updrafts this creates severe turbulence and in very great thunderstorms the rigidity from the downdrafts must be sufficient to rigidity an plane downwards in the direction of terrain. At airfields, physique of techniques and landings are no longer oftentimes allowed whilst an energetic thunderstorm is interior of sight because of this and likewise the prospect of windshear. With regards lightening - it is not the main deadly part of a thunderstorm in any respect. There are static wicks to disperse the electrical powered energy. in spite of the undeniable fact that, a marvelous flash can quickly degrade a pilots ingenious and prescient which isn't so risk-free. we've climate radar and could see the place they're and stay clear of them yet around the equator, multicell thunderstorms can selection for 100s of miles wherein case the very turbulent centres could be prevented yet patches which teach as lighter factors (amber on the climate radar) ought to nonetheless be flown with the aid of.
Q: I received a piece of electrical equipment from China which has a power lead with it. It originally had a 2-pin plug which I have stripped to rewire into a 3-pin UK plug but the wires are blue, black and brown! I am confused now as I thought either blue/black could be neutral or black/brown could be live. Didn't expect blue, black and brown in same wire.
You need to use a continuity tester to see what wire goes where, specifically the black wire, or just leave it disconnected.
Q: I was thinking of making a video game collection, I allready have a big one but only containing systems and games with CDs. But no collection is complete without the retro NES or SNES or the old school consoles with cartridges. My question is where would be a good place to store them? Because god knows how difficult it is to find a complete set with the box and Manuel and everything so I'll have to deal with just buying the cartridge. If you could help out I greatly appreciate it!
Store them on a big shelf or a couple boxes. You may be planning to get 30 NES games, but they are sooooooo much good ones you'll have 200 carts !
Q: I dont understand how charged particles in the sky would effect the electrical system down here.
It's a worry, especially by the insurance companies which have been raking in premiums for years and never had to pay out. Gosh, paying out might affect their profits. As the 2012-3 solar max will likely be lower than AVERAGE, the chances of a CME during it are low. We COULD get a CME today, as they are NOT tied to solar Maximums like a lot of people think. Its just unlikely. Fear sells, so expect your insurance companies to raise your rates, even though they won't pay out anything. Oh, and they won't LOWER your rates in 2013, either. Have you figured out who is in charge, yet?
Q: I'm a physics students and often come up with seemingly stupid questions I can't really find an answer to. If the human body acts as a resistor of around 100 kilo-ohms or more, how is it that I could die by grounding myself with the hot terminal of an electrical outlet?I understand that the average current flowing through me is the product of RMS-voltage over resistancebut this value doesn't seem NEARLY high enough to do any damage much less for me to detect.Thanks!
Mr. C. has an excellent answer. I might also add that as an electrical worker I find it very important to make sure that when I work with electrical circuits and safety equipment that I try and eliminate a flow path from live to ground that can pass through my heart area. We always use safety equipment and follow procedure but at times you have no choice but to get very close to energized exposed circuits. They can and do bite. I have been known to take an extra step and insulate exposed energized areas that are near my legs when I am working with energized circuits above my waist.
Q: I measured it with a CRO in the physics lab and I was wondering what could be its source
That is a period of about 62 hours or 2.5 days! Are you sure you measured this with an oscilloscope, or does CRO mean something else to you? Maybe the motion of the planets, earth, moon, etc. I don't know? Do you mean a period of 4.5 microseconds? That would be 222kHz perhaps EMI from a computer, other electronic gear, short wave radio, etc. If you can clarify, I might be of more help. Edit: OK; I have a couple of ideas, but it can be DIFFICULT to find. I spent a long time trying to track down the source of 70MHz in my lab. Turns out there is a TV station (channel 4) transmitting about 1 mile away. Channel 4 occupies the space between 67.31MHz and 71.75MHz. 222 KHz has a wavelength of about 1350 meters. It takes a pretty big antenna to launch that as a traveling wave so I'm going guess its a near field source. A good way to look for it is to make a small loop antenna with a few turns of magnet wire (maybe a few 10s of cm in diameter) and hook it to your oscilloscope. Walk around with it putting it near any and all electrical equipment that is in or near your lab. Make sure to change the orientation of the coil when you are moving around. You are basically playing a game of hot and cold. Try to maximize the signal and in theory you should be near the source. Also, be suspicious of the lights. I know their source is 60Hz, but some electronic ballasts for fluorescents run at a pretty high frequency, at least 10's of KHz, you could be seeing a harmonic. Just try flipping the lights on and off looking for a change in amplitude of the signal on the scope. If this doesn't find it, then perhps it is far field? I don't know of any commercial braoadcasts at this frequency though. The low end of AM radio is around 500KHz. Maybe you have an active Ham radio operator in the neighborhood? I wouldn't think he would be transmitting all of the time though is this 'noise' always present? Hope this helps. Let me know if you find it. Dave
Q: After all, the whole point of ATEX certification is that it doesn't make a fire. One would think if you can safely use something in an explosive atmosphere you can use it on shabbos. By the same token a shabbos light should be safe to use in an explosive atmosphere.
When I was in fourth grade, the science teacher taught us the physics definition of work and explained how it differs from the everyday definition of work Much like that -- Jewish legal definitions of Hebrew words do not always line up perfectly with the everyday use of English words that aproximate them. With electrical items, the prohibition of fire is only one of the prohibitions to be aware of for Shabbat -- off the top of my head, there is also boneh (building) and bishul (cooking) On the reverse side -- your logic does not hold in even the most basic English definition. It is only the Karaites that believe there is a Shabbat prohibition of fire, the normative prohibition is on making fire and putting out fire -- thus, there are quite a few devices used on Shabbat that are straight forwardly on fire (well, heck -- just think of the candles themselves!!!) A Shabbat lamp is simply always on - but has some cover to keep the light from bothering. Hopefuly, this whole structure is well insulated (I don't know -- never used one)

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