Intelligent voice assistant, leading the new trend of IOT era With the rapid development of artificial intelligence, the intelligent voice assistant has also made great progress, once again igniting the enthusiasm of the giants to develop smart home. By 2021, artificial intelligence-based voice assistants are expected to penetrate 40 million households, and Amazon is currently leading the way in this field. Huawei, Lenovo, Forrinx and a number of startups have launched integrated Alexa appliances, mobile phones, smart security, and other digital products. When Huawei launched Mate 9 in the US market, it decided to use Amazon Alexa. Huawei and Amazon showed a video. In the video, Mate 9 completes a variety of features similar to Echo speakers, including turning on lights, taking a taxi from Uber, and ordering dog food. The essence of the smart home platform is not to sell several specific services and products. Its real meaning is to seamlessly connect the home appliances and lights, so that people can control the home appliances or get weather, news and other information at any time. Amazon Alexa has done a good job in these areas, so Alexa is a very easy platform for hardware manufacturers, so they have extended an olive branch to Alexa. DISH, the second largest satellite TV service provider in the US, will be the first TV service provider directly compatible with Alexa; Whirlpool's smart home devices will be connected to Alexa, and Alexa has become the home's control center; Lenovo's smart home devices also use Alexa, and unlike other vendors, Lenovo is more like Amazon's competitors, because they also released a smart speaker product similar to Echo; Forrinx has launched a series of security devices that support Alexa, such as Xiaoan smart alarm, voice control smart socket, voice control aromatherapy machine and so on. Alexa not only walked into the house, but also walked into the car. Ford at this year's CES show, SYNC 3 infotainment, an in-vehicle infotainment system powered by Alexa, was launched; through this system, Alexa tightly integrated the car and the house. Take the specific usage scenario as an example. Through this system, the user can use the voice to start the car at a specified time in the home; while the user is driving, he can continue to use the voice command to wake up Alexa through the car audio system, for example, query route and destination, ask Weather, purchases, music and audio books, etc.; users can even control the lights in their homes, garage doors, etc. in the car through Alexa. In this way, Alexa's voice interaction method has the greatest advantage in driving; and, the car and the family have also achieved effective linkage. According to Ford's own statement, the addition of Alexa makes this system "the most understandable in-vehicle system ever." Ford also said that the car Alexa will gradually reach the user this summer, and it will be very easy to get started, greatly reducing the user's learning costs. LG also released a family robot with built-in Alexa at CES called LG Hub Robert. The device is relatively small and has a more dynamic "face" that allows it to control other appliances of the LG brand in the home.
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).
Maximum Discharge
Current Imax(8/μ20μs)kA
Nominal Discharge
Current In(8/μ20μs)kA
Operating
Environment-C
Surge Protector SPD,Surge Protection Device SPD,SPD Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjaccontactor.com
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;
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
60
80
100
120
150
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
(-40ºC~-+85ºC)
Relative humidity 25 ºC
≤95%
installation
Standard Rail35mm
Material of Outer Covering
Fiber Glass Reinforced Plastic