TOSUNlux Official Site - Electrical Circuit Breaker Manufacturer in China

Blog

Everything You Need to Know About MPPT Solar Charge Controllers

19th Aug 2024

When implementing photovoltaic systems, selecting an optimal solar charge controller is imperative for maximizing energy yields from solar panels. As operations look to extract every potential watt-hour from their renewable assets, MPPT charge controllers have emerged as the foremost solution for off-grid and battery-based PV applications. MPPT technology allows up to 30% more energy production over PWM controllers Match controller ratings to system voltage and current capacity for top performance Advanced monitoring and customizable features facilitate system oversight Proper sizing ensures a flexible platform supporting evolving energy needs By continuously tracking the true maximum power point of solar modules, these controllers optimize electrical harvesting regardless of changing field conditions. What is MPPT Solar Charge Controller? At its core, MPPT stands for Maximum Power Point Tracking. By intelligently monitoring module performance metrics, MPPT controllers locate and maintain operation at the precise voltage where solar panels generate their highest wattage output. This optimal power point naturally drifts with irradiance levels and temperature fluctuations, so algorithms dynamically adapt voltage conversion to stay locked on. How MPPT Works Converters within the MPPT solar regulator function as the linking node between solar arrays and battery banks or loads. Independent of downstream system voltage, these step-up or step-down boosters transform incoming DC to suit the battery while continuously tracking fluctuations in the solar maximum. Regardless of environmental shifts, the controller adjusts the operating point to pump maximum current into storage. Applications of MPPT Solar Charge Controllers Off-grid solar installations especially stand to gain from MPPT performance advantages. Remote community microgrids, telecom […]
Read More
How to Choose a DC Circuit Breaker?

19th Aug 2024

No matter which DC powered system you are outfitting, properly selecting and installing circuit breakers is crucial for safety and long-term reliability. But with so many breaker types, sizes, and tricks to the trade, how do you make the right choice? Let’s break down the key factors. Key Considerations There are a few major things to evaluate when choosing DC breakers: Voltage Rating DC breakers are rated for specific voltage ranges, so this must exactly match your system voltage. 12V automotive circuits use 12V or 12-32V breakers. Marine tinned copper wire needs higher 32V or 50V ratings. Overvolting a circuit breaker for DC voltage risks failure or fire. Always stay within the voltage window marked on the breaker. Current Rating This reflects the maximum continuous load the breaker can safely handle indefinitely. It’s listed as amps (A) and must exceed the total draw of everything downstream on that circuit. Include start-up surge loads from motors too. Unsure of the draw? Rate for 125% of wire capacity as a safety factor. Interrupting Capacity Shown as “iC” or “IC”, this is the breaker’s short-circuit withstanding limit in kA (thousands of amps). Higher iC handles severe power surges safely without welding contacts. Use iC matching or exceeding the circuit’s maximum short-circuit current if possible. This protects wiring in failure modes. Breaker Quality Cheap breakers can fail to trip under load or arc weld shut. Stick with top brand names like Blue Sea Systems, Reliance or Westmarine for durability. Consider ones with sealed covers and vibration resistance for marine […]
Read More
Is a Copper Busbar Better Than Aluminum?

17th Aug 2024

When assembling electrical control panels, switchgear, and industrial power distribution systems, the busbar is a critical backbone carrying large currents within tight tolerances. For this core application, spec’ing the right busbar material matters greatly. Copper has long been the industry standard, but is aluminum gaining ground as a lower-cost alternative? Aluminum Busbar vs Copper Busbar – Key Differences Let’s examine the pros and cons of different types of busbars. Electrical Conductivity On a fundamental level, copper has an edge due to its higher conductivity compared to aluminum. As current density rises in busbars, resistance heating becomes more problematic – and copper generates less waste energy through I2R losses. For applications involving frequent overload conditions or variable load profiles, copper’s superior heat dissipation maintains cooler operating temperatures that prolong component life. However, enhanced aluminum alloys have narrowed the gap, bringing conductivity about halfway between aluminum and copper. Mechanical Durability Copper also endures mechanical stresses like vibration and thermal cycling better than softer aluminum over the long haul. Its work-hardening characteristics generate a protective oxide patina providing self-healing corrosion resistance indoors. But modern alloys give aluminum overlapping outdoor durability when properly treated and welded. Material Cost Analysis While copper outperforms electrically and mechanically, aluminum has a compelling attribute – cost. On a pound-for-pound basis, high-purity aluminum sells for approximately one-third less than copper. Considering multi-ton bus systems, savings stack up fast when downsizing materials. However, a true value assessment should factor for total cost of ownership over the years. Copper’s reliability may allow longer service periods before […]
Read More
The Global Top 10 Junction Box Manufacturers

16th Aug 2024

Junction boxes, a type of electrical box, serve a crucial insulation and protection function wherever electrical circuits merge and split, making them an essential infrastructure element across industries worldwide. As electrification proliferates into new sectors, established junction box powerhouses continue expanding their offerings to remain at the forefront. Junction Box Manufacturers – Top 10 Picks for Junction Boxes Rank Manufacturer Key Features 1 TOSUNLux High-quality junction boxes, extensive catalog, worldwide certifications, and customer service. 2 CZ Electric Co., Ltd Certified electrical products, exports to over 50 nations, and strong quality controls. 3 KAISER Group IP-rated fiberglass, aluminum, and steel boxes; fireproof models; technical consultations. 4 Hammond Manufacturing NEMA and UL certified plastic and metal boxes; customized panel options; built-in clamps for secure cable management. 5 Marechal Electric Ex certified enclosures, compliance with global directives, and connection technology innovation. 6 Takachi Die-cast aluminum, stainless steel, and plastics enclosures; bespoke services. 7 HuanYe Electronics IEC, EN, and UL standard boxes; value-added logistics services. 8 Polycase Military-spec tested products; custom engineering capabilities. 9 Turck, Inc Proprietary sensors, interface technology, and fieldbus networking; multilingual support. 10 Power Wholesale Certified mild steel or stainless boxes; rapid fulfillment abilities. 11 Schneider Electric Global leader in energy management and automation; diverse range of junction boxes, including fan-rated boxes for ceiling fans. 12 ABB Ltd. Comprehensive electrical solutions; robust and durable junction boxes for industrial use. 13 Legrand Innovative electrical and digital building infrastructures; high-quality enclosures. 14 Siemens AG Advanced technology solutions; reliable junction boxes for various applications, including those with built-in cable […]
Read More
The Top 5 Busbar Manufacturers in China in 2024

16th Aug 2024

As essential components transmitting heavy electrical currents, busbars play a vital role in industries and infrastructure. Here are the leading Chinese companies producing these conductive infrastructure elements at massive scales through advanced automated facilities and stringent quality protocols. China Busbar Manufacturers – Top 5 Picks Here are 5 of the well-known busbar manufacturers available in China: TOSUNLux Founded in 1994, TOSUNLux established expertise crafting low-voltage switchgear and busduct systems. Certified production lines roll out millions of aluminum and copper bars tailored for utilities, manufacturing plants, and more. Value-added services like anti-corrosion treatments and bolt-hole machining simplify installations. A global network provides localization support to major construction projects. Clients appreciate the company’s durability and rapid response to custom modifications. Yueqing Gaoke Environmental Electric Co., Ltd. Established in Yueqing in 2007, Gaoke now contributes over 10% of China’s busbar output via continuous optimizations. ISO certified workshops fabricate bars from electrolytic tough pitch (ETP) copper for maximal conductivity. Options include pre-drilled cross-sections, pre-assembled joints, and integrated flexible jumpers minimizing integration work. Their eco-friendly credentials attracted high-profile solar and hydro plants demanding low inductive impedance. Wenzhou Yopu Electric Co., Ltd. Founded in 2005 in Zhejiang, Yopu established expertise innovating busbar solutions. Continuous testing achieves bars transmitting over 50 million amps without damage. Options like threaded joints, mounting saddles, and modular partitions streamline projects. Yopu’s R&D centers collaborate with utilities evaluating aluminum alloys, anti-corrosion powder coatings, and precision cutting machines boosting capacity. Regional subsidies enable rapid deliveries minimizing schedules. Guangzhou Baoge Machinery Manufacturing Co., Ltd. Founded in Guangzhou in 1999, […]
Read More
What Size Solar Charge Controller Do I Need?

15th Aug 2024

If you’re putting together a solar power system for an off-grid cabin, workshop, or boat, properly sizing the charge controller is paramount. An undersized controller can’t handle the system’s full output, while one that’s too large is an unnecessary expense. By following some simple steps to calculate load and future-proof your needs, you can select the right-sized unit for long-term reliability. How To Select A Solar Charge Controller? Here’s how you can select a solar charge controller: Identifying Solar Array Specs The first critical information is the specifications of your photovoltaic (PV) panels. Make note of the wattage rating, maximum power current (Imp or Imax), and voltage for each panel. For example, if using three 100W panels rated at 5A and 19-22V maximum power, the total wattage is 300W. Knowing these parameters helps verify the charge controller’s compatibility. Matching Battery Bank Voltage What size of solar panels are needed to charge a 12v battery? Most residential and commercial charge controllers are designed for 12V, 24V or 48V battery banks. Ensure the selected model voltage matches what your batteries operate at – usually 12V for small systems. A 24V unit won’t work for a 12V bank without additional regulation. Calculating Maximum Output Current To size the solar controller regulator current rating properly, you’ll need to determine the maximum output current from the solar array. This involves either adding currents for panels in parallel, or totalling voltages for series configurations: Parallel Panels: Simply multiply the Imp by the number of panels. For the above 3 x 100W […]
Read More
Which Solar Charge Controller is Better: MPPT or PWM?

14th Aug 2024

As the renewable energy industry has boomed, incorporating solar power into off-grid and backup applications has become more commonplace. When assembling these systems, selecting the right charge controller type is a key decision. But with MPPT and PWM options available, which is the better performing technology for most use cases? Let’s take a deeper look. PWM Vs MPPT Solar Charge Controller – Which is Better? Here’s how you can select which solar charge controller is better for you: Maximizing Harvest At their core, all solar charge controllers aim to efficiently charge batteries from PV panels. But MPPT (Maximum Power Point Tracking) controllers have an advantage in maximizing the energy harvest from photovoltaics. Through actively tracking the panel’s power point and optimizing voltage/current levels, MPPT can extract up to 30% more juice compared to PWM solar charge controller (Pulse Width Modulation) designs under normal conditions. This is because PWM controllers simply regulate voltage, missing out on accessible higher power levels as sun intensity and temperatures change throughout the day. For applications where squeezing every last watt-hour matters, like remote telecom towers or large off-grid homes, MPPT’s superior yield makes it the logical choice. Amortized over the lifetime of the system, its higher initial cost pays off. Wider Compatibility However, PWM controllers have the benefit of operating over a wider input voltage range. While MPPT works best matched to a specific panel series, PWMs can interface with a broader assortment of modules without performance loss – a plus for situations involving replacement panels down the road. Their […]
Read More
Can I Use an AC Circuit Breaker in a DC Circuit?

13th Aug 2024

Whether designing control panels for heavy machinery or renewable energy microgrids, many industrial electricians have faced this question at some point in their career. Using the wrong protective device type certainly won’t end well, but just what makes AC and DC circuit breakers different? Let’s dive into the technical details behind this issue that comes up often in commercial and industrial applications. The Basics of AC vs DC As a refresher, alternating current (AC) periodically changes polarity and magnitude in a sinusoidal waveform over time, while direct current (DC) flows continuously in one direction. This foundational distinction affects how circuit breakers and fuses operate to interrupt faulty circuits. AC circuit breakers rely on electromagnetism – as current fluctuates through zero crossings in its sine wave, the magnetic field collapses and the breaker contacts open. However, DC does not oscillate through zero, so simply monitoring current magnitude is not enough for circuit protection. Other technical considerations come into play requiring specialized DC current breakers. Using AC Circuit Breaker in DC Circuit Here are a few considerations to keep in mind while using AC vs DC circuit: Trip Mechanisms A key difference lies in the internal trip mechanism used to break the circuit. In AC breakers, this is typically a thermal-magnetic type that senses heat and magnetic forces from AC flow. In contrast, DC current breakers often use melting alloys or bimetal strips to translate current into heat that physically expands a mechanism. The lack of a current zero crossing means DC breakers don’t have the electromagnetic […]
Read More
A Beginner’s Guide to Using a Weatherproof Junction Box for Electrical Wiring

11th Aug 2024

In this beginner's guide, you'll learn what a weatherproof junction box is, how to install it, and how to use it to safeguard your electrical connections from harsh weather conditions. Follow these simple steps to ensure your electrical wiring is safe and secure outdoors.
Read More
Digital Panel Meters vs Analog Panel Meters: How to Choose

17th Jul 2024

When it comes to selecting panel meters for measuring and displaying electrical parameters, the choice often comes down to digital panel meters and analog panel meters. So which should you choose between the two? Digital and Analog Panel Meters An analog panel meter, also known as an analog meter, is a traditional type of measuring instrument that uses a moving pointer or needle to indicate the value of the measured parameter on a graduated scale. The movement of the pointer is typically driven by an electromechanical mechanism, such as a moving coil or an iron vane. On the other hand, a digital panel meter, or digital meter, is a modern measuring device that displays the measured value in a digital format using a numerical display, such as an LCD or LED screen. Digital panel meters rely on electronic circuits and microprocessors to process and display the measured data. Key Differences between Analog Meter vs Digital Meter Display The most obvious difference between analog and digital panel meters is the way they display the measured value. Analog meters use a moving pointer and a graduated scale, while digital meters provide a precise numerical readout. Accuracy Digital panel meters generally offer higher accuracy compared to analog meters. Digital meters can provide readings with a resolution of up to several decimal places, while analog meters are limited by the resolution of the graduated scale and the user’s ability to interpret the pointer position. Reading Ease Digital panel meters provide an unambiguous reading, eliminating the need for interpolation or […]
Read More

blog

Blog

Everything You Need to Know About MPPT Solar Charge Controllers

19th Aug 2024

How to Choose a DC Circuit Breaker?

19th Aug 2024

Is a Copper Busbar Better Than Aluminum?

17th Aug 2024

The Global Top 10 Junction Box Manufacturers

16th Aug 2024

The Top 5 Busbar Manufacturers in China in 2024

16th Aug 2024

What Size Solar Charge Controller Do I Need?

15th Aug 2024

Which Solar Charge Controller is Better: MPPT or PWM?

14th Aug 2024

Can I Use an AC Circuit Breaker in a DC Circuit?

13th Aug 2024

A Beginner’s Guide to Using a Weatherproof Junction Box for Electrical Wiring

11th Aug 2024

Digital Panel Meters vs Analog Panel Meters: How to Choose

17th Jul 2024