We can predict the trend of this field in 2015 based on the characteristics of the products of the above several smart audio brands.
(1) Two directions of development of smart audio
Direction One: Sound Quality Improvement
Whether or not it has high quality sound quality is an important criterion for consumers to judge an audio product. This is also an important factor for smart audio products leading traditional audio products. In the process of promotion and promotion, high-quality sound quality is the core demand of consumers and the main selling point of smart audio.
Although the sound quality of Xunfei, SONOS smart sound and Dianyun sound is ranked high in all audio products, the key to its development and improvement is still the sound quality of the product, and other aspects of the product are improved on the basis of sound quality. Should be the strategic focus of smart audio companies.
Direction II: Using advanced technology to enhance the intelligence of audio products
The rapid development momentum in the smart home field has given the smart audio industry more opportunities for development. Various smart audio companies have taken different measures in order to achieve good performance in the competition. Xinfei and Xiaozhi smart audio brands are focused on the application of voice control systems. They want to use voice systems to increase audio products to controllers in smart home systems. We can see from these two smart audio companies that they want to use audio products as the leading products in smart home systems. However, Xiaozhi Smart Audio is still in its infancy, and XFX Smart Audio is leading the voice system. For other brands of products, but overall, the voice search function of smart audio still needs to be improved. To realize the ultimate goal of the audio product becoming the controller of the smart home system, it is necessary to use advanced technology to enhance the intelligent level of audio products.
(2) Three major trends in the development of smart audio
Trend 1: Reducing Audio Product Volume, Uniform Battery Standard
Audio products are mobile hardware that users expect to have with their high quality sound quality. In order to ensure sound quality, some smart audio brand products have six speakers installed. Such devices require batteries to support their energy consumption. Therefore, for the convenience of consumers, smart audio also needs to standardize the battery, so that the product can be easily carried.
Trend 2: Grasping the core requirements of users for high sound quality
In the early days of the development of smart audio products. Consumers have complained about the sound quality of their purchases on social networking platforms. As an audio product, high sound quality is always the core demand of consumers. Only by grasping this point can products continue to attract consumers. Therefore, in the next development and improvement process, what smart audio companies need to do is to improve the sound quality of their products, and to increase the price/performance ratio of smart audio products while satisfying consumers’ enjoyment of music.
Trend 3: Open interfaces to enhance the status in smart home systems
The popularity of the Internet is getting higher and higher, and the support of users is becoming more and more important for smart audio brands. In order to gain the trust and support of users, many smart audio manufacturers further open their layouts and strengthen cooperation with other products. This will also help improve the status of smart audio in smart home systems.
Since its birth in 2014, smart audio products have continued to develop and improve. In 2015, more and more merchants entered the intelligent audio industry, and competition in this field has become increasingly fierce. To maintain its own development and progress in competition, it is necessary to adjust its own development strategy in a timely manner in accordance with the market conditions and the needs of consumers. Therefore, in 2015, what smart audio products need to do is to put user needs first, meet the core needs while highlighting the characteristics of the products and improving the level of intelligence.
Product Description
SPD Surge Protective Device,Lightning Surge Protector
Surge Protection Device (SPD)
It is a device used to limiting instant surge voltage and discharge surge current, it at least including a non-linear component.
Surge protective Device Model Selection
With the impact of international information flow, the rapid development of microelectronic science and technology, communication, computer and automatic control technology, make the building start to go for high quality, high functional area, formed a new building style-intelligent building. As inside the intelligent building there are lot of information system, <<Building lightning protection design norm>> GB50057-94(2002 vision)(hereafter brief as <<lightning protection norm>>) put forward the relative requirement to install the surge protective device, to ensure the information system safely and stable running.
SPD essentially is a equipotential connection material, its model selection is according to the different lightning protection area, different lightning electromagnetic pulse critical and different equipotential connection position, decide which kind of SPD used in the area, to achieve the equipotential connection with the common earth electrode. Our statement will based on SPD's maximum discharge current Imax, continuous operating voltage Uc, protection voltage Up, alarm mode etc.
As per << Lightning Protection Norm>> item 6.4.4 stipulation "SPD must can withstand the expected lightning current flow and should confirm to the additional two requirements: the maximum clamp voltage during surge across, capable to extinguish the power frequency follow-on current after lightning current across." That is the value of SPD's max. clamp voltage add its induction voltage of two ends should be same with the system's basic insulation level and the equipment allowed max. surge voltage.
SPD for Power Supply System Series Selection Guide
The installation of SPD at each lightning protection zone, according to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category, its insulation withstand impulse voltage level can determine the selection of SPD. According to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category as signal level, loading level, distribution and control level, power supply level. Its insulation withstand impulse voltage level are:1500V,2500V,4000V,6000V. As per to the protected equipment installation position different and the different lightning current of different lightning protection zone, to determine the installation position of SPD for power supply and the break-over capacity.
The installation distance between each level SPD should not more than 10m, the distance between SPD and protected equipment should as short as possible, not more than 10m. If due to limitation of installation position, can't guarantee the installation distance, then need to install decoupling component between each level SPD, make the after class SPD can be protected by the prior class SPD. In the low voltage power supply system, connecting an inductor can achieve the decoupling purpose.
SPD for power supply system specification selection principle
Max. continuous operating voltage: bigger than protected equipment, the system's max. continuous operating voltage.
TT System: Uc≥1.55Uo (Uo is low voltage system to null line voltage)
TN System: Uc≥1.15Uo
IT System: Uc≥1.15Uo(Uo is low voltage system to line voltage)
Voltage Protection Level: less than the insulation withstand impulse voltage of protected equipment
Rated discharge current: determined as per to the lightning situation of the position installed and lightning protection zone.
SP1 Series
Normal Working Conditions
-Altitude not exceed 2000m
-Ambient air temperature:
Normal range: -5ºC~+40ºC
Extend range: -40ºC~+80ºC
-Relative Humidity: 30% - 90% under indoor temperature condition
- At the place without obviously shaking and shock vibration
- Non-explosion danger medium, non-corrosion gas and dust ( including conductive dust)
Classification
-As per Nominal Discharge Current:
5,10,20,30,40,60KA(8/20µs)
- As per Maximum continuous operating voltage:
275V,320V,385V,420V,440V,460V
- As per to poles
1P,1P+N,2P,3P,3P+N,4P
- As per auxiliary functions:
a. With remote signal output ( remote alarm function)
b. Without remote signal output
Selection Principle
- The continuous applied voltage on the two terminals of SPD should not more than the maximum continuous operating voltage Uc value;
- The voltage protection level Up of SPD should less than the maximum impulse withstand voltage of the protected equipment;
- As per to the different earthing system and protection mode to select the specification accordingly;
Product Features
1, built-in over-current overheating, temperature control circuit technology.
2, the module design, easy installation, online replacement.
3, low leakage current, fast response time, low residual voltage.
4, alarm indication device, green (normal) v red (fault).
| Model/Technical Parameters | WR-B60 | WR-B80 | WR-B100 | WR-B120 | WR-B150 |
| Rated Operating Voltage Un (V ~) | 220V 380V | 220V 380V | 220V 380V | 220V 380V | 220V 380V |
| Maximum Continuous Operating Voltage Uc (V ~) kV | 385V 420V | 385V 420V | 385V 420V | 385V 420V | 385V 420V |
| Voltage Protection Level Up (V ~) kV | ≤1.8≤2.2 | ≤2.4≤2.5 | ≤2.5≤3.2 | ≤3.4≤3.7 | ≤4.0≤4.5 |
|
Maximum Discharge Current Imax(8/μ20μs)kA |
60 | 80 | 100 | 120 | 150 |
|
Nominal Discharge Current In(8/μ20μs)kA |
30 | 40 | 60 | 80 | 100 |
| Response Time | <25 | <100 | |||
| L/N(mm²)The Cross Section Of L/N Line | 16,25 | 16,25 | 16,25 | 16,25 | 25,35 |
| PE (mm²)The Cross Section Of PE Line | 16,25 | 25,35 | 25,35 | 25,35 | 35 |
| Fuse or Switch (A) | 63A | 63A | 63A,100A | 63A,100A | 63A,125A |
| The Line Section of Communication and Alarm (mm²) | ≥ 1.5 | ||||
|
Operating Environment-C |
(-40ºC~-+85ºC) | ||||
| Relative humidity 25 ºC | ≤95% | ||||
| installation | Standard Rail35mm | ||||
| Material of Outer Covering | Fiber Glass Reinforced Plastic | ||||
Surge Protector SPD,Surge Protection Device SPD,SPD
Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjmotorstarter.com