South Korean home appliance maker LG Electronics Inc. and portal operator Naver Corp. on Wednesday agreed to jointly develop an advanced guidance robot based on the high-tech mobility platform. LG Electronics and Naver’s R&D subsidiary signed a memorandum of understanding to collaborate on research and development of robot technology, expanding on their discussions made during the recent Consumer Electronics Show in Las Vegas.
With USB 2.0, KVM users can control security NVR/DVR devices, a NAS system, and other products. Vanco says that with the product there is no need to run a separate line or extender just for KVM control, and the product’s Power Over Cable (PoC) integrates power into the Cat-5e/Cat-6 cable to omit the need for a power supply at the receive or transmit ends of the system.
Space is another obstacle for substation applications. The Blue Stripe Heavy Duty Substation Stick is telescopic. This allows for an 18.5-ft. stick to collapse to 7 ft. 8 in. Not only does this allow for storage on site, but this stick can also be transported on existing vehicles.
In the drama, Kim Joo Young wears her hair in a sleek bun and is usually seen in an all-black outfit. Kim Seo Hyung was revealed to have made the decision for Kim Joo Young’s styling, as it would hide her character’s past and only display her shadow.
SKY Castle has broken the viewership rating record that Gong Yoo’s K-drama Goblin has set. The JTBC drama is expected to further soar in ratings as it will come to an end this week.
UpMarketResearch offers a latest published report on “Global Power and Control Cable Market Analysis and Forecast 2018-2025” delivering key insights and providing a competitive advantage to clients through a detailed report. The report contains 145 pages which highly exhibit on current market analysis scenario, upcoming as well as future opportunities, revenue growth, pricing and profitability.
The kit obviously doesn’t come with a battery, and with a PWM inverter, this kit can’t handle lithium-ion batteries like MPPT inverters can. Renogy does give you the option to upgrade your charge controller to an MPPT Rover 20 or Rover 40 for quite a bit more cash.
In some cases of fire, cables had been connected incorrectly when the solar power systems were installed or suffered short circuits due to animals chewing them.
The ARS711 is available as a modular unit, allowing greater flexibility for job site transport and set up, while providing the ability for end-user mounting on an existing chassis.
On the other hand, an ad-supported version of Prime would offer less incentive for consumers to sign up for Prime. “Free” shipping may be the main reason people pay for Prime, but Amazon’s formidable streaming video service is a big part of the equation. If Amazon made Prime Video access a la carte through a free ad-supported tier, it would effectively devalue a Prime membership and possibly discourage people from paying for a Prime package.
The standard that relates to the safety of PV systems is IEC 62109-1 ‘Safety of Power Converters for use in Photovoltaic Power Systems’. Part 1 specifies general requirements and part 2 defines specific requirements for inverters. The standard is relevant to systems up to 1,500 V and its scope outlines the design and construction methods required to ensure protection against common hazards such as electrical shock, mechanical, temperature, fire, chemical and more. Of particular relevance to dc-dc converters is the reference to IEC 60664 ‘Insulation Coordination for Equipment within Low-Voltage Systems’. Unlike some older standards, IEC 60664 does include requirements for operating at altitudes above 2,000 m and partial discharge testing which is very relevant to 1,500-Vdc operating voltages. Partial discharge is the gradual breakdown of microvoids in insulation at high voltage leading to degradation and eventually complete failure. Partial discharge is required to be absent during tests and necessitates particular construction of the isolation barrier in a dc-dc converter. As in all safety standards, insulation requirements depend on the system voltage, installation over-voltage (OV) category and pollution degree (PD) of the environment. For PV systems with a 1,500-Vdc bus, OV II is used for the PV panel circuits with minimum impulse withstand of 6,000 V. Whereas, OV III is used for the grid-connected inverter stage and requires 8,000 V impulse withstand. As the installations are considered industrial grade with some environmental protection, PD 2 is generally applicable, which allows only nonconductive pollution with occasional condensation. Designing to meet standards such as IEC 62109-1 is not trivial, with many more considerations required than mentioned.
There’s a lot to pick up in this area. If your inventory is full (or nearly full), you can turn left, slide down the ramp and make your way back to the room with the Item Box.
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