Taw qhia rau Mechanical Zog Meters
Txawm hais tias muaj ntau hom thiab cov qauv ntawm cov tshuab hluav taws xob ntsuas hluav taws xob (tseem hu ua inductive zog ntsuas), lawv cov qauv yog qhov zoo sib xws, thiab lawv txhua tus tsim los ntawm kev ntsuas cov cuab yeej, cov khoom siv kho mob thiab cov khoom pabcuam (plhaub, racks, kawg khawm thawv, nameplates. ). Cov nram qab no yog ob peb feem ntau siv txhua yam zog ntsuas.
(1) Ntev- lub neej hluav taws xob ntsuas hluav taws xob. Lub neej ntawm lub tshuab hluav taws xob ntsuas hluav taws xob hauv ib txwm siv feem ntau yog nyob ntawm qib hnav ntawm nws cov kabmob qis. Tom qab ntawd los ntawm lub sijhawm nws tau muab tso rau hauv kev siv mus rau lub sijhawm uas qhov yuam kev ntawm lub ntsuas hluav taws xob hluav taws xob tsis ua haujlwm vim qhov hnav ntawm cov kabmob qis, lub sijhawm ntawm lub sijhawm yog lub neej ntawm lub ntsuas hluav taws xob. Qhov qis qis ntawm lub ntsuas hluav taws xob hluav taws xob muaj kev cuam tshuam zoo rau lub neej kev pab cuam ntawm lub ntsuas hluav taws xob hluav taws xob.
Cov kabmob ntawm cov khoom siv hluav taws xob niaj hnub no feem ntau suav nrog: steel hniav nyiaj hniav kub pob zeb bearing, graphite bearing thiab magnetic bearing. Lub pov haum bearing tuaj yeem muab faib ua ib lub pov haum bearing thiab ob lub pov haum bearing. Ob lub pov haum bearings muaj kev sib txhuam tsawg dua thiab zoo dua hnav tsis kam. Sib nqus bearings tsuas yog tso siab rau lub zog quab yuam ntawm cov hlau nplaum ntawm tib lub polarity kom tshem tawm cov khoom sib hloov hauv qhov chaw. Sib nqus bearings txuas ntxiv lub neej ntawm lub zog ntsuas los ntawm kev txo cov neeg siv khoom siv. Tam sim no, qhov ntev - lub neej hluav taws xob ntsuas hluav taws xob uas maj mam nrov thiab siv feem ntau siv cov qauv sib nqus ntawm cov kabmob.
Ordinary mechanical zog ntsuas siv ib lub pov haum bearings, thiab lub neej kev pab cuam feem ntau yog 5 xyoo. Cov kabmob ntawm qhov ntev - lub neej hluav taws xob ntsuas hluav taws xob tuaj yeem txuas ntxiv mus txog 10 xyoo vim yog siv cov ntaub ntawv tshiab thiab thev naus laus zis xws li cov kabmob sib nqus, graphite bearings lossis ob lub pob zeb diamond bearings.
(2) Wide range electric energy meter. In recent years, due to the improvement of residents' living standards, more and more household appliances are installed with large capacity, but the possibility of using them at the same time is small. If the old single-range electric energy meter is selected, the rated current is too large. When the actual load is very small, the running current may be lower than 10 percent of the rated current of the electric energy meter, which makes the measurement inaccurate; on the contrary, if the rated current of the electric energy meter is selected too small, once When household appliances are used at the same time, the electric energy meter may burn out due to overload. The wide-range electric energy meter can overcome the above problems, as long as the total current of the household appliances used is within the rated current range of the electric energy meter, it can be measured safely and accurately. Therefore, the electric energy meters installed by residents in the reconstruction of rural power grids and urban power grids are generally long-life and wide-ranging electric energy meters. The wide-range electric energy meter is also called the high overload multiple electric energy meter, and its overload capacity can reach 2 to 4 times. That is, the rated current of this electric energy meter is not a fixed value, but an elastic range. If the nameplate of a single-phase meter is marked with: Class 2.0, 220V, 10 (40) A, it means that the overload capacity of the meter is 4 times; when the rated current of the energy meter is within 10-40A, the accuracy can still meet the requirements of Class 2.0 . And 2.0 class, 220V, 10A ordinary electric energy meter, its overload capacity is generally only 1.5 to 2 times.