2014年12月29日星期一

Cncelegroup Energy-saving technology

AC contactor AC contactor is widely used in low voltage circuits, is a safe, easy to control, volume and a wide range of industrial necessities. Now commonly used in the rated Electric transformer current 63A and above large, medium-capacity AC contactor should more than million Taiwan dollars, its operating system at the time of retention of electromagnetic active power consumed between 10W ~ 100W; reactive power consumed in the Dole spent tens to hundreds of spent between Seoul. The active power consumption distribution is roughly: 65% to 75% of the core, the short-circuit ring 25% to 30%, the coil 3% to 5%. For such a being in the industrialization and urbanization of exchanges and contacts with large country, and the energy needs of the growing tension, saving power resources has become imperative.
Such as the AC contactor solenoid operating system with an appropriate energy-saving technology to its operating system, the original design of electromagnetic ac to dc retention retention, core and short ring can save most of the loss in power, to obtain a high energy-saving efficiency (typically active saving rate> 90%). mcb circuit breaker Moreover, through the transformation can reduce or eliminate noise, reduce the temperature rise of the coil and extend the service life of the contactor.

2014年12月25日星期四

Energy-saving products Categories Circuit breaker

Constant component: F0 = Fatm / 2 (Fatm = 107 B2 MS / 8π)
Alternating component: F ~ = F0 cos 2ωt.
At work, due to the armature reaction force always been the role of the spring, the contact springs Fr reaction force, the electromagnetic suction averages Fat> Fr; when Fat <Fr armature at the beginning of the release, Fat> Fr armature also was attracted state, so Again and again, the armature Inverter Power Supply vibration and noise. At this point in the alternating magnetic core produced by hysteresis loss and eddy current loss will cause the core heat (superposition of silicon can play a role in reducing the eddy current losses). To reduce operating noise is usually open in the small capacity of the electromagnetic system yoke ends embedded in a small groove corresponding short-circuit ring, and its role is to be divided into two parts by the core flux, that does not pass through the magnetic flux Φ1 and short-circuit loop the magnetic flux Φ2 through the short-circuit loop, and Φ2 lag Φ1, suction is always greater than the synthesis reaction, thereby reducing the vibration and noise, but also increases the copper loss accordingly.
AC contactor power mainly by the retention power and pull the power of two parts, although larger coil pull starter instant power, but time is very short (tens of ms); working time has been in the retention hold (at this energy loss is mainly concentrated in the state of retention on iron loss). That is why if they can reduce the AC contactor work retention can save energy consumption, according to this principle, the current energy air circuit breaker contacts broadly categorized as follows:
1. Saver
Saver is divided into: capacitive, transformer, duty cycle (change) type. AC contactor Saver corresponding supporting the use of the contactor in the DC state retention operation, so to save energy. Saver AC contactor solenoid due to electromagnetic energy and the internal device Saver limitations generally applicable to the rated current of 60 ~ 600A AC contactor, lower than 60A AC contactor because the stored Electric transformer electromagnetic solenoid can run in DC maintain its pull; electromagnetic greater than 600A AC contactor can be easily generated so Saver damage internal components.

2014年12月23日星期二

electric transformer

Size and high power density
In addition to medical and multifunction devices, high-precision detection and adjustment direction, the smaller size and portability is a development direction. This requires medical Air circuit breaker equipment supply must have a higher power output in a smaller board area conditions.
Special Applications
Centralized power supply products on the market are mostly standard output, even though there are some products can be by way of an external power supply circuit, output adjustment, the adjustment range is not large, but stability is also problematic. If you hit a low voltage, high current or high voltage DC on how to handle the situation, of course, can be used to customize the way, but the price is quite high, the customer can accept.
Price
Today the price of medical equipment due to fierce power transformers competition, has gradually transparent, especially some small home medical equipment, prices have been very popular and mass. So this requires an important part of medical devices - power, there must be price competitive.