All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(166 products available)
Solar dc isolator 1000VDC has several types. Each type is meant for different applications, voltage ratings, environmental conditions, and installation requirements. Below are the common types:
It is also known as a manual DC isolator. This is because users must manually operate these isolators to switch on or off the electrical circuits. Switching DC isolators is commonly used in small to medium-scale solar power systems. These systems include residential or commercial PV systems. People use them when they require isolation for maintenance purposes.
An automatic DC isolator automatically disconnects the circuit in case of a fault or overvoltage condition. It, therefore, eliminates the need for manual operation. After automatic disconnection, the isolator will reset automatically or will require manual resetting. These are popular on large industrial solar power systems since there is a high demand for system reliability.
These isolators can interrupt or “break” the load current safely while isolating the circuit. It helps prevent any potential electrical hazards from occurring. People use load break isolators in high-power solar systems. These systems include utility-scale solar farms. This is because they help improve the systems’ safety and reliability.
Integrated DC isolators are built into other electrical devices, such as inverters or combiners. This means that the isolation function is integrated within the main electrical equipment. It eliminates the need for separate isolators. This is mostly found in compact solar power systems. In such systems, there is limited space during installation.
As the name suggests, these DC isolators allow the driving of isolation operation electronically from a distance. It provides convenience in systems where manual access is difficult. People with large-scale solar power installations prefer these kinds of DC isolators. DC isolators are also remote-operated through a supervisory control and data acquisition (SCADA) system.
The performance and longevity of solar DC isolators depend on the right materials and supplies. This helps with proper installation and maintenance. Below are the most useful materials and supplies:
Insulation is a key factor in preventing electrical failure or short circuits in DC isolators. In this case, high-quality insulating materials such as ceramic or composite materials will improve the system's overall safety. In addition to this, they reduce the risk of unintended electrical discharges going to the ground.
Solar DC isolators are in outdoor and often harsh environments. Therefore, they require good sealing to prevent dust, water, and other contaminants from damaging them. High-quality rubber or silicone gaskets ensure the enclosure is airtight and waterproof.
This ensures that the isolator will function properly in its lifetime, hence increasing system reliability.
Mounting brackets and support structures are made from corrosion-resistant materials like stainless steel or aluminum. It ensures that the DC isolators remain securely mounted and properly aligned throughout their use. A good mounting system also minimizes the vibrations that may impact the performance of the isolators.
The cables and connectors used to connect the DC isolators to the solar panels and inverters should be high-quality, UV-resistant, and capable of carrying high DC currents. Copper cable s are commonly preferred due to their excellent conductivity and minimal power loss. On the other hand, heavy-duty connectors ensure low resistance at the point of DC isolation. This helps in preventing overheating.
SPDs help to protect DC isolators from voltage spikes, like lightning strikes or sudden power surges. These devices divert excess voltage away from the DC isolator. This protects it from damage and ensures long-term reliability. People usually use SPDs in large solar farms and commercial installations where the risk of surges is high.
Solar DC isolators use many places to keep systems safe during operation and maintenance. Below are the common scenarios where these isolators are used:
These solar farms have large amounts of solar panels that produce high DC voltage. They use automatic DC isolators or load break isolators to ensure the isolators can handle the system's electrical load while safely isolating it for maintenance.
These large factory rooftop voltage installations use remote control DC isolators. It's because the roof is usually hard to access. They need an isolator that will keep the system running while providing safety and easy access.
People use DC isolators in hybrid solar power systems. These systems use DC and AC power, like batteries, inverters, and solar panels. They use Integrated DC isolators to keep everything working well while maintaining safety.
People take solar DC isolators as soil samples using sealing technologies. These ensure the isolators can survive extreme weather while protecting themselves from dirt and water. This is important for the isolators to last a long time, especially in harsh conditions.
Remote monitoring stations monitor solar farm performance. They need automatic DC isolators to automatically prevent power from going to unsafe areas. This ensures the protection systems work even without maintenance.
Residential solar systems often have manual DC isolators. The isolators are easy to install, affordable, and sufficient for small systems. The homeowner can turn off the isolator when maintenance or repairs are needed. This keeps the system safe.
The long-lasting performance of solar DC isolators depends on various factors. Here are the key elements:
Solar DC isolators are often exposed to direct sunlight, which can degrade materials like rubber gaskets and plastic components over time. Using UV-resistant materials helps mitigate this issue and extends the lifespan of the isolator.
In areas with high dust or pollen levels, debris can enter the isolator enclosure and interfere with the internal mechanisms. It affects operation and leads to wear. Good sealing and indoor installation can reduce this factor.
High humidity or moisture levels can cause corrosion on internal components, especially for isolators with metal parts that lack protective coatings. Waterproofing and SPDs can reduce this issue.
DC isolators undergo extreme heat and cold. It causes thermal expansion and contraction. Such a continuous process may eventually lead material fatigue. Choosing an isolator rated for high temperature variation will help reduce this factor.
Exceeding the isolator's voltage or current rating will cause internal damage, leading to failure. Selecting an isolator properly rated for the system's electrical parameters is crucial for long-term durability.
People in industrial areas or agricultural zones may expose DC isolators to chemicals like oils, solvents, or pesticides. These substances can degrade materials if they're not resistant to them. It leads to early failure. Utilizing chemical-resistant materials will help prevent this.
As the name implies, manual DC isolators need to be operated by hand. In contrast, an automatic DC isolator will automatically isolate DC currents without a person’s input.
One does not need to worry about maintenance. However, regular inspections to check for wear, corrosion, or sealing failure are important. They ensure that the isolator functions properly and has a long life.
A DC isolator is used to safely isolate solar power circuits from direct current. It is critical for the safety, reliability, and maintenance of solar power systems.
Yes. A DC isolator safely isolates the inverter from the battery. It is important in keeping the system safe and functioning properly.
High humidity enables internal DC components to corrode. People mount DC isolators on the inside to reduce humidity exposure.
