FAQ

Q:How can you guarantee quality?

A:Always a pre-production sample before mass production;Always final Inspection before shipment.

Q:What can I buy from you?

A:DC circuit breakers, Surge Protective Devices, PV fuses, isolator switches, solar connectors etc.

Q:You have sales target finished amount requirement to the distributor?

A:This is determined based on your country and region. Contact us .

Q:Can I transfer the money to you then you pay to other supplier?

A:We can help you buy from other suppliers, and then you can pay me together.

Q:Can I delivery the goods from other supplier to your factory? Then load together?

A:Yes, no problem.

Q:When will you leave your factory and to have your spring festival holidays?

A:The Spring Festival is the most important holiday in China, and we will have a holiday of about 20 days. Of course, you can also contact us, and our sales personnel will reply to you when they see it.

Q:Do You have office in shanghai or guangzhou that i can visit?

A:Our office is in Wenzhou.

Q:Can you send your staff to install the equipment for us?

A:Our electrical equipment is very convenient to install, and ordinary electricians will install it.

Q:Can I only buy some spare parts from you?

A:Of course, I believe that long-term cooperation starts with small orders.

Q:Will you will attend the fair to show your products?

A:There are plans to go in the future.

Q:Can you send your equipment to my warehouse in guangzhou?

A:Yes, for small orders, we will send them to Guangzhou free of charge.

Q:Could I know which advantages do you have please?

A:10 export experience in the overseas market. Our products mainly export to the EU and USA markets. We do the quality products according to the IEC standards. We have the technical service and support for the right project.

Q:What's your products' performance during using?

A:Our product have high quality, low price. We have rich experience in metallurgical equipment. We have professional teamwork and the best service for you.

Q:How do you pack the equipment?

A:Normally are cartons, we also follow the special requests  of our customers.

Q:Can you can design the equipment according to our size?

A:Yes, we can produce by your samples or technical drawings, but it has MOQ or you need to pay the extra fee.

Q:How many years have your company made this kind of equipment?

A:We have been specializing in the production of DC circuit breakers, surge protectors, photovoltaic fuses, disconnectors, MC4 connectors, etc. for over 10 years.

Q:Which certificate do you have for your equipment?

A:We have ISO 9001, CE. CB. SEMKO, SAA, TUV. CCC, ROHS.

Q:How many staffs do you have in your factory?

A:There are 50 workers, 5 technicians, and 10 sales personnel.

Q:How can I to be your agent in my country?

A:To be honest, each country is somewhat different, contact us through email, we will give you the best price and look forward to your greetings.

Q:Do you have any agent in our country?

A:Currently, we only have agents in Pakistan and Sri Lanka, and some countries are still under negotiation. If you are interested, you can also contact us.

Q:How far is your factory from the city hotel?

A:About 10 minutes by car.

Q:How far is your factory from the airport?

A:In one hour, if you need to come to our factory, I can pick you up.

Q:How long it will take from guangzhou to your factory?

A:Guangzhou is about 1000 kilometers away from us. Take driving for example, it takes about 13 hours.

Q:Where is your factory located?

A:Our factory is located in Liushi, Yueqing, Zhejiang Province, the capital of electrical appliances in China

Q:Do you provide free spare parts ?

A:We can supply the sample if we have ready parts in stock, but the customers have to pay the shipping cost.

Q:Do you have detailed and professional installation manual?

A:We have many kinds of products, please contact us.

Q:If OEM is acceptable?

A:Yes, Our company is available for Retail & Wholesale& OEM& ODM.

Q:Do you provide sample? Free or charge?

A:Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q:What is your term of payment?

A:We accept TT,30% deposit and 70% balance agaisnt copy of BL, or palpay and so on. B. L/C at sight.

Q:What is your MOQ?

A:The MOQ of different products will be different,pls confirm with our sales before ordering.

Q:Are you a trading company or a manufacturer?

A:We are the Direct Manufacture Factory, and our factory  has specialized in industrial electronic products since 2004.

Q:How long is your delivery time?

A:Samples cost 5-7 days. Bulk order cost 12-15 days.

Q:How many production lines in your factory?

A:3 production lines

Q:When I can receive quotation and detail information after send the enquiry?

A:Reply will be sent in 48hours.

Q:Can I get a sample for test before place order?

A:Yes, Of course!

Q:What's your shipment method?

A:We ship by Express, by air, by sea, by train.

Q:If i want to release order, what's the payment method you accept ?

A:We accept T/T, Paypal, L/C, Trade Assurance.

Q:What are your advantages compared to other suppliers?

A:The product specifications are complete, the variety is rich, and the company has more than ten years of production, research and development and sales experience. The company's team is young and energetic.

Q:Any suggestion for the delivery way please?

A:Express delivery, door to door service. By air freight, to the airport of destination country.In some case, DDU and DDP could be done. By sea, FCL , LCL

Q:Any support or service for after sales please?

A:Standard quality guarantee is 24 months. 24 hours online service for the emergency issue.

Q:Do you have a catalogue? Can you send me the catalog to check all your products?

A:Yes, We have product catalogue. Please contact us for catalog.

Q:Where is your market?

A:Our products are popular in Midde east , Thailand , Malasia ,italy, Africa ,American, pakistan and so on.Some of them are our regular customers and some of them are developing. We hope you can join us and make mutural benifit from our cooperation.

Q:What's the rated current range you can offer?

A:We offer DC MCB from 1A to 125A, and DC MCCB from 63A to 630A.

Q:What's your DC MCB quality?

A:Our DC MCB is designed for solar pv system, all the parts in the DC MCB are for direct current standard. Not all the MCB are DC MCB!

Q:What's your production capacity of DC MCB?

A:We can make 300,000 pole one month. If you have order plan, feel free to contact me, I will tell you delivery time according to your demand.

Q:What is DC MCB?

A:CHYT NBL7-63 Series DC MCB was designed for direct current (DC) control circuit applications, used for over-current protection within appliances or electrical equipment. It provide optimization products for DC system applications such as PV.

Q:Difference between AC MCB and DC MCB?

A:Breaking a DC MCB is more challenging than breaking an AC MCB because AC MCBs use zero-crossing detection to extinguish the arc, while DC MCBs require mechanical interruption or cooling to achieve the same result. Additionally, DC MCBs have a faster opening time than AC MCBs.

Q:Are MCBs OK for DC?

A:When working with DC circuits, it is crucial to use MCBs that are specifically designed and marked with DC ratings. It is important to note that AC MCBs should never be used in DC circuits, as they are not designed to extinguish the arc that is created in DC circuits. Using AC MCBs in DC circuits can lead to overheating of wires, which can ultimately result in a fire. Therefore, it is not safe to assume that AC MCBs can be used in DC circuits solely based on their matching ampere and voltage ratings.

Q:How do I choose a MCB for DC?

A:To ensure proper selection of a suitable MCB for a DC circuit, it is essential to first determine the total current of the circuit. Once the current is determined, the appropriate MCB can be selected accordingly. It is important to note that the current rating of the MCB should not exceed the cable's current carrying capacity. Therefore, it is necessary to carefully match the MCB's current rating with the cable's capacity to avoid any potential hazards or damages.

Q:What is the voltage of DC MCB?

A:DC miniature circuit breakers (MCBs) are designed to operate within a voltage range of 12 to 1000 volts DC.

Q:What are the advantages of DC circuit breaker?

A:Circuit breakers in DC circuits serve two main purposes: protecting individual loads that operate on DC power, and safeguarding primary circuits such as those found in inverters, solar PV arrays, or battery banks.

Q:What are the types of DC circuit breaker?

A:DC circuit breakers are commonly available in several types, including Miniature Circuit Breakers (MCBs), Molded Case Circuit Breakers (MCCBs) designed specifically for DC applications, and Type B Residual Current Devices (RCDs). These circuit breakers are used to provide protection for various types of DC circuits, including individual loads and primary circuits in applications such as solar PV arrays, battery banks, and inverters.

Q:What is the capacity of DC MCB?

A:When selecting a DC MCB, it is important to consider the breaking capacity required for the specific application. Residential DC MCBs typically have a breaking capacity of up to six kA, while industrial-grade DC MCBs are designed to handle higher breaking capacities. Therefore, it is essential to evaluate the application and select a DC MCB with an appropriate breaking capacity to ensure safe and reliable operation of the circuit.

Q:What is MCB in solar?

A:DC MCBs serve as protective devices for safeguarding panels from high surge currents in DC circuits. They are typically installed upstream of inverters to provide protection in the event of a high surge current, ensuring that the panel remains safe from damage. By tripping the circuit when an excessive current is detected, DC MCBs help prevent electrical faults that could result in costly repairs or replacements.

Q:What type of MCB for solar PV?

A:To clarify, for solar combiner boxes with currents greater than 125A, it is recommended to use DC MCCB (moulded case circuit breaker) rated between 125A to 800A. On the other hand, if the current is below 125A, DC MCB (Mini circuit breaker) rated between 6A to 125A is suitable for use in the DC circuit breakers.

Q:Can you help me to select suitable products?

A:If you could provide us with your inquiry and requirements, our team of professionals will assist you in selecting the appropriate model.

Q:Is there any discount?

A:We offer better prices for larger quantities, and if you're interested in a special discount, please feel free to contact us.

Q:How fast can I get the quotation?

A:We will provide you with the full quotation within the next 24 hours.

Q:May know the standard of package?

A:In addition to the standard cartons, we also cater to the specific requests of our customers.

Q:How can I place order?

A:If you need to inquire about the specifics of your order, please feel free to reach out to us via email.

Q:How can I pay you?

A:Please let us know which payment method you prefer so we can provide you with the necessary details to complete the transaction. We look forward to receiving your payment and proceeding with your order. Thank you for choosing our company.

Q:What is your sample policy?

A:Otherwise, we can produce a sample based on the customer's specifications, but the customer would need to cover the costs of tooling and production. Additionally, shipping costs would also apply. Please contact us for further details on sample production and associated costs.

Q:What breaker to use for solar?

A:CHYT DC circuit breaker is a critical component of any solar system, providing protection against overcurrents, short circuits, and excessive loads. Proper installation and maintenance are essential for the safe and efficient operation of the system.

Q:What's your main product?

A:We are working on two product initiatives, one involving direct current (DC) electrical systems operating at low voltage, and the other involving alternating current (AC) electrical systems operating at low voltage.

Q:Is MCB required for solar panel?

A:DC MCB is a common protection device used in solar PV systems. It is designed to disconnect the solar panel from the inverter in case of overcurrent or short circuit. This helps to protect the components of the system from damage and improve the overall safety of the installation.

Q:Could you print our own logo?

A:Certainly, our company is open to providing products to individual customers as well as businesses seeking bulk purchases or custom manufacturing solutions. Whether you're interested in choosing from our existing selection or developing a new product with us, we're happy to work with you to find the perfect fit for your needs.

Q:How long is the product guarantee?

A:We provide an 18-month warranty and have a dedicated department responsible for ensuring the quality of our products. Every single product undergoes 100% inspection to ensure its quality.

Q:Do solar panels need MCB?

A:To safeguard the solar panels from sudden, high surge currents, it is necessary to install a miniature circuit breaker for direct current prior to setting up the inverter.

Q:What is a PV breaker in solar system?

A:Photovoltaic (PV) systems harness the energy of the sun and convert it into electricity, which is then fed into the electric grid. In the balance of system (BOS), DC circuit breakers safeguard the wiring that links the PV modules to the combiner or inverter, acting as both a protective measure and a means of disconnecting the current flow.

Q:What is your quality control process?

A:Ensuring the high quality of our production is contingent upon sourcing superior components from our suppliers. As a result, we place great emphasis on verifying the caliber of the raw materials we acquire. To forestall any chance of errors, we conduct regular testing at various points throughout the product development cycle.

Q:What is a DC circuit breaker?

A:CHYT DC circuit breakers are designed to safeguard DC-powered electrical appliances and incorporate supplementary measures to extinguish arcs. These breakers are a novel technology for most homeowners as the majority of household devices operate on AC power and require AC circuit breakers.

Q:What are the uses of DC circuit breaker?

A:DC circuit breakers serve the purpose of safeguarding specific loads utilizing DC, or alternatively securing primary circuits, such as inverters, solar PV arrays or battery banks.

Q:Can you do the design for us?

A:Certainly. Our team of experts is highly skilled in both designing and manufacturing processes, with years of experience under their belts. You can share your ideas with us and we will work closely with you to bring your vision to life. Even If you don't have any existing files, we can help you create them. Just provide us with high-quality images, your Logo and text, and give us your input on how you want everything to look. We will provide you with finished files for your approval.

Q:How do I choose a DC circuit breaker?

A:When selecting a DC MCB, it is important to consider the total current of the circuit and choose an MCB with the appropriate rating. It is crucial to ensure that the MCB's current rating is not higher than the cable's current carrying capacity.

Q:Tell me the standard of package?

A:For lower volume, cartons are suitable, while for higher volume, robust wooden cases are necessary for protecting the contents.

Q:What is DC SPD?

A:CHYT DC Surge Protection Device (SPD) is created to restrict the effects of sudden voltage spikes from the atmosphere and redirect any electrical surges towards the ground. This ensures that the voltage remains safe for the electrical installation and equipment, and mitigates any potential hazards.

Q:What is DC SPD for solar function?

A:CHYT SPDs for PV, solar power, and DC systems are designed to safeguard against surges and spikes that may arise from lightning and other sources. They can act as standalone units or be integrated into electrical equipment for enhanced protection.

Q:What is the difference between DC and AC SPD?

A:An AC Surge Protection Device (SPD) safeguards your electrical components against voltage spikes in AC (alternative current) power, while a DC SPD provides protection for your solar components by mitigating surge currents in DC (direct current) power.

Q:How do I choose a DC SPD for my solar system?

A:In order to select the appropriate SPD model for your PV system, it is important to consider the following factors: the temperature at which the SPD will operate, the voltage of the system, the short circuit rating of the SPD, the waveform that needs to be protected against, and the minimum discharge current required by the SPD.

Q:Could you offer Form A ,C/O and From E?

A:No worries. We can arrange the necessary paperwork and submit it to the appropriate offices, such as the Foreign Affairs Office, to obtain this certificate.

Q:Do you need SPD for solar?

A:To safeguard a home from transient surges in a residential solar power system equipped with microinverters and short DC cabling but l

onger AC cables, it is recommended to install surge protective devices at the combiner box.

Q:Can I use ac SPD for DC?

A:CHYT SPDs used for DC input to the inverter and solar array must be designed specifically for DC applications. It is important to note that AC SPDs are not appropriate as their disconnect circuitry may not extinguish the arc in the event of a failure. Therefore, precise selection of appropriate SPD equipment is required for DC power systems.

Q:What is SPD in a solar system?

A:CHYT Surge Protective Devices (SPDs) are commonly used in solar power systems, specifically in photovoltaic (PV) or DC systems, to safeguard against electrical surges and spikes. These surges can be caused by a variety of factors, including lightning strikes. SPDs offer a reliable shield against such harmful electrical disturbances, ensuring the smooth operation and longevity of the solar power system.

Q:Would you accept to use our logo?

A:As long as you have a sufficient quantity, there is absolutely no issue with pursuing OEM.

Q:Where is your market?

A:Our products have gained strong popularity in various countries, including the Middle East, Thailand, Malaysia, Italy, Africa, America, Pakistan, and more. We are proud to have regular customers in these regions, as well as those who are developing new partnerships with us. We believe that our cooperation can bring mutual benefits and we invite you to join us.

Q:What are surge protection devices for PV?

A:In order to ensure the safety and protection of both household and large-scale PV installations, it is important to adhere to specific design protocols. Key measures such as the installation of lightning arresters and surge protection devices (SPDs) should be implemented to proactively safeguard the system and prepare for potential power surges.

Q:Do I need surge protection for solar panels?

A:To ensure the protection of critical circuits in a solar power system, it is essential to install a surge protection network across both the DC and AC power distribution networks. The number of SPDs required for a solar PV system will vary, depending on the distance between the panels and the inverter.

Q:How does a solar surge protector work?

A:A surge protector serves as a safeguard against electronics damage by redirecting excess electricity from the "hot" power line into a grounding wire. This is accomplished using a metal oxide varistor (MOV) in most standard surge protectors, which consists of a metal oxide linked to the power and grounding lines through two semiconductors.

Q:What is your minimum quantity?

A:Typically, we require a minimum order quantity of at least 1000 USD. However, for initial business transactions, we are open to considering smaller quantities if requested by the customer.

Q:What is your normal packing?

A:Our standard packing includes a plain inner box and a brown carton. However, we offer customization options for packing and accept varying quantities.

Q:Where do you put surge protectors in solar panels?

A:It is important to install surge protectors at both ends of long wire runs connected to any part of your system, including inverter AC lines. Arrestors are designed for various voltages for both AC and DC, so make sure to use the appropriate ones for your specific application.

Q:What is DC surge protection for inverter?

A:The DC surge protector effectively prevents potential damage or malfunctions of inverters and DC optimisers caused by electrical surges on the DC cables of a solar system. It is important to note that electrical surges can arise not only in the DC cabling but also in the AC and communication wiring that are linked to the inverter or DC optimisers.

Q:How to become your agent?

A:Please feel free to reach out to us via email. We are eager to provide you with our most competitive price and eagerly await your contact.

Q:Could I have prices of your products?

A:Greetings. Do not hesitate to drop us a message via email. Rest assured that we will promptly respond within 24 hours.

Q:What is a DC fuse?

A:CHYT DC fuses are specifically designed to be utilized in Direct Current environments, providing a crucial function of separating the source from the load in the event of an abnormal situation. While they cannot be reused once they have performed their intended task, they offer a cost-effective alternative to Circuit Breakers.

Q:What are DC fuses used for?

A:During instances of excessive current flow, the DC fuse is responsible for interrupting the circuit. Unlike in AC circuits, extinguishing the arc in a DC circuit is not as straightforward. Nevertheless, DC fuses serve as crucial safeguards for battery modules and packs and are dependable when it comes to clearing fault currents in DC circuits.

Q:Are DC and AC fuses the same?

A:DC fuses are constructed differently than simple AC fuses and include additional components for arc extinguishing. The rated voltages for AC and DC fuses also vary. DC fuses are considered more advanced due to their complex design.

Q:How does a DC fuse work?

A:When an excessive amount of current flows through a DC circuit, a fuse made of metal wire will melt and break the connection to the power source, thereby protecting the rest of the circuit from damage.

Q:Can I get a sample before the bulk order?

A:Certainly, we are pleased to accept sample orders for quality testing. We also welcome mixed samples.

Q:What are the advantages of DC fuse?

A:CHYT Fuse is a highly effective means of mitigating large short circuit currents, with the added advantage of producing no disruptive byproducts such as flame, gas or smoke. It possesses the capacity to act at a faster rate than circuit breakers, making it a preferred primary safeguard against short circuits.

Q:Where do you put a DC fuse?

A:It is recommended to position the fuse in close proximity to the positive terminal of the battery. This ensures that the entire circuit will be rendered inoperable in the event of a fuse blowing. In the case where the positive terminal serves as the ground, the fuse should be placed near the negative terminal.

Q:Do you inspect the finished products?

A:Before shipping, the QC department conducts inspections on each stage of production, as well as on the finished products.

Q:What is your terms of packing?

A:Typically, we use generic cartons to package our merchandise. However, if you have a valid registered patent, we can utilize your branded boxes upon receipt of your authorization letters.

Q:How do I choose a DC fuse?

A:To choose the right input fuse for a dc-dc converter, you need to take into account various factors. These include the converter's voltage and current ratings, its interrupting and temperature derating capabilities, the melting integral or I2t, the maximum fault current of the circuit, and the necessary agency approvals. You should also consider mechanical aspects such as the fuse's size, mountability, and accessibility.

Q:What is the difference between AC fuses and DC fuses?

A:The primary distinction between the AC and DC ratings of a fuse lies in their capacity to interrupt the electrical arcs that occur when the fuse blows. DC arcs are comparatively more difficult to interrupt than AC arcs, necessitating fuses that are rated for lower voltages, frequently 32VDC.

Q:Can I use a DC fuse for AC fuse?

A:It is not safe to use DC and AC fuses interchangeably.

Q:Does voltage matter for DC fuses?

A:The voltage rating of a fuse is crucial and must not be overlooked. It is essential to ensure that the chosen fuse's voltage rating is higher or equal to the circuit voltage to prevent any electrical hazards. The voltage rating becomes highly significant when the fuse tries to open due to its low resistance.

Q:What voltage is DC fuse?

A:CHYT DC fuse is generally are rated 1000VDC, 1500VDC.

Q:Why are DC fuses bigger than AC fuses?

A:The heat generated in a DC fuse in a given time period is greater than that of an AC fuse with the same current rating due to the fact that the effective or equivalent value of AC is only 70.7% of DC. As a result, AC fuses are smaller in size than DC fuses.

Q:What is the difference between DC MCB and DC fuse?

The primary distinction between fuses and circuit A:breakers lies in their reusability. While circuit breakers can be used multiple times, fuses can only be employed once. Circuit breakers safeguard homes and equipment from overloading and short circuits, while fuses only protect devices and homes from overloading.

Q:How do I know if my DC fuse is blown?

A:The DC fuse base of CHYT is equipped with an LED indicator light. Many people do not know what the indicator light is for. They think that the fuse is connected to the circuit and the indicator light will light up. This is an error. On the contrary, when the indicator light is on, it indicates that the fuse is broken and needs to be replaced.

Q:What is a solar fuse?

A:CHYT solar fuse is a specific type of fuse designed for use in solar power systems. These fuses may also be referred to as PV fuses, solar PV fuses, or fusible PV fuses. Solar panel fuse sizes vary based on voltage, ratings, and amperage ratings.

Q:What fuse do you use for solar panels?

A:When connecting solar panels in parallel, it is necessary to install a 30-amp fuse for each panel. However, if the panels are less than 50 watts and use 12 gauge wires, then 20 amp fuses must be used instead.

Q:Where should solar fuses be placed?

A:Solar panel fuses are typically installed in one of three locations. The first location is between the battery bank and the charge controller. Alternatively, the fuse may be located between the charge controller and the solar panels, or between the inverter and the battery bank.

Q:What is a PV isolator?

A:CHYT solar isolator switch is a safety mechanism that allows for the manual interruption of the direct current (DC) power flow from the solar photovoltaic (PV) system.

Q:What is a PV array DC isolator switch?

A:CHYT rooftop DC isolator is a safety switch installed near a solar panel system to shut off the DC current flow between the panels and the inverter. Although it is manually operated, it can be the main cause of system fires as it is prone to faults and malfunctions.

Q:What does a PV disconnect switch do?

A:The PV disconnect switch acts as a breaker that breaks the DC current flow from the solar panels to the inverter, and the AC Disconnect switch separates the inverter from the electrical grid.

Q:Is a PV isolator the same as a breaker?

A:CHYT isolator is designed to be operated only in the absence of current, meaning that it is meant to be used when the power supply is turned off. Conversely, a circuit breaker is intended to be used while the power supply is still active, allowing it to function optimally even while electricity is flowing.

Q:What is a solar isolator switch?

CHYT solar isolator switch is a safety mechanism that allows for the A:manual interruption of the direct current (DC) power flow from the solar photovoltaic (PV) system.

Q:What is a DC isolator switch?

A:CHYT DC isolator switch is a safety device that enables manual disconnection from the solar PV modules. It is used in solar PV systems to disconnect the solar panels during installation, repair or maintenance work.

Q:What is the purpose of DC disconnector?

A:Properly installing disconnect switches for both AC (alternating current) and DC (direct current) can help ensure the safety of your customer's home by allowing for the quick interruption of power flow when needed. These switches are particularly important for DC power systems, as they enable the safe disconnection of electrical circuits in case of emergency or maintenance needs. By taking the necessary steps to install and maintain these disconnect switches, you can help your customers enjoy reliable and secure power in their homes.

Q:Is a solar combiner box necessary?

A:In terms of battery systems, a combiner array is typically unnecessary for systems with just one or two panels. Similarly, systems with three to four panels may not require a combiner. However, for systems with more than four panels or strings of panels, it is strongly recommended to incorporate a combiner box.

Q:What is a solar combiner box used for?

A:Solar panel combiner boxes, also known as solar photovoltaic array combiners, play a crucial role in combining multiple solar panels or strings of panels into a unified bus. These junction boxes are specifically designed to handle the wiring used in PV systems.

Q:What is a combiner box?

A:CHYT combiner box serves as a central location for managing the wiring of multiple solar panels. By consolidating the connections, the combiner box creates a streamlined output that can be sent to an inverter or charge controller. This design not only ensures a cleaner appearance, but also improves the efficiency and organization of the solar PV system.

Q:What is the advantage of combiner box?

A:CHYT combiner box is a cost-effective solution that simplifies cable management and reduces material and labor expenses, as it consolidates multiple cables that connect to the inverter. Additionally, installing a combiner box provides an extra layer of protection against overvoltage and overcurrent, which safeguards the inverter from potential damages.

Q:Is a combiner box the same as a junction box?

A:CHYT solar combiner box is essentially a junction box that serves the purpose of tightly connecting and housing multiple wires and cables through various entry ports. Its primary function is to combine several strings of photovoltaic (PV) modules and integrate them into a single standard bus.

Q:Where do you put a PV combiner box?

A:It is advisable to perform regular maintenance on the combiner boxes located between the solar inverters and modules, in order to prevent any potential leaks.

Q:What is a PV combiner box?

A:CHYT PV combiner box is a distribution box designed specifically for managing DC power inputs from solar panels in a solar energy system. The box houses DC breakers and is responsible for combining several DC inputs from the panels into a single DC output. This output is then channeled to a charge controller or inverter, depending on the system configuration.

Q:Do I need a PV combiner box?

A:In a regular household setting, a combiner box is not required since only a few strings, typically 1 to 3, are utilized and these are directly linked to the inverter. However, for larger institutions or facilities using 4 to 4000 strings, the presence of a combiner box becomes indispensable.

Q:What is the voltage of PV combiner box?

A:CHYT PV combiner box is typically rated for a maximum voltage of 1000V, which is sufficient for many projects. However, some individuals may have unique needs for combining solar panels with varying voltages.

Q:What does a DC combiner do?

A:CHYT DC Combiner is a tool that is utilized in photovoltaic source circuits and photovoltaic output circuits to merge multiple direct current circuit inputs and produce a single direct current circuit output.

Q:What is the difference between AC and DC combiner box?

A:The DC combiner box allows for the integration of multiple PV strings and panels, resulting in several input options, and can distribute the collected current to several inverters, creating numerous output possibilities. Conversely, the AC combiner box has only one extra output. The core function of the combiner box is to collect the current.

Q:How does AC MCB work?

A:CHYT AC voltage oscillates between positive (+V) and negative (-V) values, completing 60 cycles per second. As a result, the voltage reaches 0v 60 times per second. At this point, the AC MCB interrupts the circuit, stops the flow of current, and prevents any damage to the wiring as well as any possible electrical arcs.

Q:Does AC need its own breaker?

A:CHYT Circuit breakers function as a safety mechanism to safeguard the electrical system of your home from overloading by automatically shutting off the power flow.

Q:How do I know if my MCB is bad?

A:If a circuit breaker exhibits any of the following symptoms, it may be considered as faulty or bad: emitting a burning odor, feeling hot to the touch, frequently tripping, showing signs of wear and tear, visibly damaged, unable to remain reset, experiencing power surges, or overloaded circuits.

Q:How many times can a MCB trip?

A:The commonly used circuit breaker in residential and commercial electrical systems, also known as Miniature Circuit Breaker (MCB), has an operational lifespan of up to 10,000 uses.

Q:Why is my AC breaker tripped and won't reset?

A:If the circuit breaker continually trips and cannot be reset, it is likely due to a short circuit. A short circuit occurs when a live wire carrying electrical current makes contact with a neutral wire. In this instance, the tripped circuit breaker serves as a safety feature and indicates that the breaker is functioning correctly.

Q:Which MCB is used for house?

A:MCB of Type C is appropriate for applications in homes and residential buildings.

Q:What is an AC circuit breaker?

A:CHYT circuit breaker is a mechanical switch that can handle current flow in normal conditions and can also interrupt current during abnormal conditions such as short-circuits. It is designed to make, carry, and break currents in the regular state and can also carry and break currents for a designated time under abnormal conditions.

Q:What causes an AC breaker to trip?

A:Your AC breaker usually trips due to a short circuit, overexertion of the AC system, or a faulty or malfunctioning component.

Q:Can I replace a circuit breaker myself?

A:Testing and replacing a circuit breaker may seem straightforward, but it is important to approach this task with carefulness and extreme caution, even if you have prior experience working with electricity. Always assume that wires carry electrical current and are live. Under no circumstance should you attempt to work in a circuit panel that is live - ensure that you have turned off the main circuit that supplies power to the panel box.

Q:Can I replace a 15 amp breaker with a 20 amp?

A:While it is technically possible to upgrade from a 15-amp breaker to a 20-amp one without an electrician evaluating the situation, it is not advisable. Simply upgrading the breaker because the current one keeps tripping could result in an electrical fire that could burn your house down. Therefore, it is always recommended to consult with an electrician before making any changes to your electrical system.

Q:What is motor circuit breaker?

A:CHYT motor circuit breaker combines the functions of low-voltage circuit breakers and thermal overload relays to provide comprehensive protection for motor branch circuits. This device effectively safeguards against overload, phase loss, and short circuits. It also promotes safer wiring practices and enhances motor protection.

Q:What is Mpcb vs MCCB?

A:MPCB is an abbreviation for Motor Protection Circuit Breaker, which is employed to manually control the ON/OFF operation of an electric motor while providing protection to the motor in case of any faults. On the other hand, MCCB stands for Molded Case Circuit Breaker, which is utilized for switching and safeguarding the distribution circuits and electric motors.

Q:What is the difference between motor circuit breaker and circuit breaker?

A:Motor protection circuit breakers are specialized devices that differ from standard miniature circuit breakers (MCBs) in their ability to allow users to preset the exact motor sizing for accurate protection. These circuit breakers are widely used in industrial applications for motor starting, and they offer superior protection compared to MCBs due to their advanced features and settings. With motor protection circuit breakers, users can ensure that their motors are protected from overloading, short circuits, and other electrical faults, which can help reduce downtime and extend the lifespan of their equipment.

Q:What is the use of motor protection circuit breaker?

A:CHYT Motor circuit breakers are designed to ensure the safety of motor branch circuits by combining the functions of low voltage circuit breakers and thermal overload relays. These devices protect against overloads, phase loss, and short circuits, while also allowing for secure wiring practices.

Q:What type of circuit breaker for a motor?

A:CHYT Motor Protection Circuit Breaker (MPCB) is an electro-mechanical apparatus that safeguards a motor from irregularities in current flow, such as overload, unplanned or abrupt interruptions in the main electric circuit. It also provides protection against phase inequality, loss, and line faults in 3-phase motors.

Q:How does a motor circuit work?

A:Electric motors function based on the laws of electromagnetism, which state that a force arises when an electric current is passed through a magnetic field. This force generates a torque on a loop of wire within the magnetic field, resulting in the rotation of the motor and the accomplishment of practical tasks.

Q:Why MCB is not used for motor protection?

A:Another issue with utilizing an MCB for motor protection is its lack of sensitivity to phase failures. A motor undergoing a phase failure poses a significant problem, as it results in a surge of current in the remaining phases, thereby leading to overheating and damaging of the winding.

Q:How do I choose a motor protection circuit breaker?

A:When selecting a circuit breaker for motor protection, it is important to consider two key characteristics of the motor: its overload capacity and the fact that its starting current is typically several times greater than its rated current.

Q:What is MCCB and ACB difference?

A:CHYT MCCB is a type of circuit breaker that is designed to protect electrical circuits against excessive currents resulting from overload or short circuit conditions. It features a molded case design and has a lower current rating compared to an ACB, which is an electrical switching device utilizing air as the arc quenching medium.

Q:What is MCCB circuit breaker used for?

A:CHYT MCCB (Moulded Case Circuit Breaker) is an electrical safety device designed to prevent an electrical circuit from experiencing overload or short circuit due to excessive current flow.

Q:What is the disadvantage of MCCB?

A:The investment required for an MCCB can be considerably higher when compared to both MCBs and fuses. Additionally, the upkeep of an MCCB entails a more complicated process due to its insulated casing.

Q:Which is better MCCB or MCB?

A:CHYT Miniature Circuit Breaker (MCB) is primarily utilized for circuits with low current, whereas the Molded Case Circuit Breaker (MCCB) is employed for circuits with heavy current. MCBs are commonly found in domestic settings with low energy requirements, whereas MCCBs are typically used in high energy consumption environments such as large industries.

Q:What does Rcbo mean?

A:CHYT RCBO is a circuit breaker that provides leakage protection. The relevant standards that RCBO must adhere to are the international standard IEC 61009-1:2012 and the national standard GB 16917.1-2003.

Q:What does RCD mean?

A:Residual Current Device (RCD) is designed to switch off the main circuit when a certain level of residual current is detected under normal operating conditions. It incorporates various elements that detect residual current and act as a trigger to turn on/off the main circuit. This device helps ensure the safety of electrical installations by preventing electric shock caused by ground faults or other electrical faults.

Q:What is residual current?

A:Residual current refers to the vector sum of current in each phase, including the neutral line, in a low-voltage distribution line that is not zero. Generally, in the event of an accident on the power supply side, the current flows from the charged body to the ground through the human body, causing the magnitude of the current in phase I and phase II in the incoming and outgoing lines of the main circuit to be unequal. At this time, the instantaneous vector composite effective value of the current is called residual current, commonly known as leakage current.

Q:What is difference between RCD and RCCB?

A:RCD stands for Residual Current Device, while RCCB stands for Residual Current Breaker. An RCCB is an electrical wiring device that immediately shuts off the circuit upon detecting a current leakage to the earth wire.

Q:Where is RCCB used?

A:CHYT RCCB is typically installed in conjunction with an MCB to provide protection against overcurrent and short circuit current. Both the phase and neutral wires pass through the RCCB device, which offers highly effective protection against a leakage current of 30, 100, 300mA. This safety mechanism is widely employed to prevent electric shocks.

Q:Which is better RCD or RCBO?

A:The reason for the dissimilarity between these two devices lies in the fact that an RCBO integrates circuit breaker functionality into its design whereas an RCD does not. As such, an RCBO is better suited for applications where added protection is required, particularly in circuits where there is a greater potential for fire hazards.

Q:Why use residual current circuit breaker?

A:RCCBs, or Residual Current Circuit Breakers, are the most secure devices for identifying and interrupting electrical leakage currents. They ensure protection against electric shock resulting from indirect contacts.

Q:Can RCCB work without earthing?

A:An earth connection is not necessary for the functioning of an RCCB.

Q:Does RCCB protect from earth leakage?

A:CHYT RCCB, or Residual Current Circuit Breaker, is a protection device that utilizes current sensing to provide protection against earth leakage.

Q:Can I use RCCB in home?

A:RCCB plays a crucial role in the electrical distribution system utilized in households and commercial structures, serving as a safety measure to prevent individuals from being injured or killed by electric shocks. In the event of current leakage from electrical equipment, an individual coming into contact with the current could suffer fatal electrocution. RCCBs are designed to protect us from such potential hazards.

Q:Does an SPD need a breaker?

A:It is recommended that SPDs be connected via a circuit breaker that is appropriately rated, rather than directly into the main lugs of the panel. In cases where circuit breakers are not feasible or not available, a fused disconnect switch should be utilized to connect to the lines and enable easy servicing of the SPD.

Q:Which is better Type 1 or Type 2 SPD?

A:CHYT Type 1 SPD is identified by a current wave of 10/350µs and is characterized as a surge protection device that provides protection against direct lightning strikes on or near a building. On the other hand, Type 2 SPD is regarded as the primary protection system for all low voltage electrical installations. It is installed in every electrical switchboard to impede the spread of overvoltages in the electrical system and safeguard the loads against damaging surges.

Q:When should SPD be used?

A:CHYT Surge protective devices (SPD) are employed to safeguard the electrical infrastructure, including the consumer unit, wiring, and associated components, against electrical surges caused by transient overvoltages.

Q:Can SPD work without earthing?

A:Grounding is an essential component that is necessary for effective surge protection. Surge protectors do not work on ungrounded outlets as they typically use metal oxide varistors (MOVs) to divert excess current into the ground line.

Q:What does an automatic transfer switch do?

A:CHYT ATS serves to maintain a constant supply of electricity to a connected load or electrical equipment, such as lights, motors, and computers, by seamlessly switching between two power sources.

Q:Can ATS be operated manually?

A:This equipment can be utilized in several situations where power outages are prohibited. Moreover, it provides the flexibility to operate the ATS both manually or automatically.

Q:Where are automatic transfer switches used?

A:CHYT ATS (Automatic Transfer Switch) is commonly utilized in proximity to a backup generator to enable the generator to furnish provisional electrical power if the primary utility source becomes nonoperational.

Q:How does ATS work electrical?

A:CHYT ATS, short for Automatic Transfer Switch, is a device that automatically switches an electrical power supply from its main source to a backup source upon detecting a failure or outage in the former.

Q:What is the difference between ATS and MTS?

A:The main difference between an MTS and an ATS is that while an MTS needs to be manually switched to change power sources, an ATS can monitor utility power and automatically switch sources in case of a power outage.

Q:What is interlocking in circuit breaker?

A:Mechanically interlocked circuit breakers are designed to prevent the simultaneous connection of both power sources to the load. This is achieved through an interlocking system that mechanically disables the movement of one circuit breaker's handle from the "Off" position while the other circuit breaker is in the "On" position.

Q:What is undervoltage protection?

A:Under-voltage protection, also known as low-voltage protection or LVP, refers to the feature of circuits that prevents loads from automatically turning back on after a power outage when voltage returns. Instead, further input from the operator is required.

Q:Why do we need undervoltage protection?

A:One popular application of undervoltage protection is safeguarding motors from damage caused by abnormal conditions, as well as preventing breaker-fed motors from re-accelerating once bus voltage is restored. However, this protection method also poses the risk of nuisance tripping when VTs fail.

Q:Can undervoltage cause damage?

A:Undervoltage can result in damage to equipment, as motor-driven appliances and certain electronic power supplies tend to consume higher currents at lower voltage levels, leading to overheating.

Q:What is over voltage protection?

A:CHYT overvoltage protector is a circuit that is designed to prevent downstream circuitry from sustaining damage due to an overabundance of voltage.

Q:What causes overvoltage?

A:Overvoltage can result from inadequate regulation of a power supply provided by a utility company, oversized transformers, uneven or fluctuating circuit loading, wiring mistakes, and failures in electrical insulation or isolation.

Q:Is a surge protector the same as a voltage protector?

A:CHYT AC surge suppressor functions to either block or divert high voltage surges in the power supply, thus safeguarding the delicate electronic components from damage. Similarly, a voltage regulator regulates incoming AC voltage and stabilizes it to maintain a consistent power supply.

Q:What are the dangers of overvoltage?

A:Transient overvoltages can undergo degradation in electronic components and circuits without being noticed by users, thereby shortening the lifespan of equipment and raising the probability of failures. In the event of severe transient overvoltages, components and circuit boards can be damaged, equipment can be burned or destroyed, and even the starting of a fire can occur.

Q:What is a DC contactor?

A:CHYT ADC contactor is an electronically operated device that is specifically designed to control the flow of current in DC circuits. It achieves this by opening and closing internal contacts. In contrast to AC circuits, DC contactors typically control much lower voltages. One of the key advantages of DC contactors is that they offer minimal arcing when the circuit is opened or closed.

Q:Can I use AC contactor for DC?

A:While AC contactors can technically be operated with DC voltage, the inclusion of a shading coil in these contactors can lead to a higher drop-off voltage. As a result, contact operation may be delayed.

Q:What is AC vs DC contactor?

A:CHYT AC contactor has a high starting current and can operate at a maximum frequency of 600 cycles per hour, whereas a DC contactor has a maximum operating frequency of around 1200 cycles per hour. A DC contactor employs a magnetic quenching arc, whereas an AC contactor uses a grid arc as an extinguishing device.

Q:How do you use a DC contactor?

A:The operation of the contactor involves energizing the coil with voltage, resulting in the generation of a magnetic field that moves the contacts into the closed position, thereby allowing the circuit to be completed. Conversely, removal of voltage from the coil causes the contacts to move back to the open position, thereby breaking the circuit.

Q:What is A1 and A2 on a DC contactor?

A:The terms A1 and A2 on a contactor typically refer to the positive and negative ends of the electromagnetic coil assembly. These two terminals are commonly used by contactor manufacturers to designate the connections that provide electrical power to the contactor's magnetic coil.

Q:What is the coil voltage of DC contactor?

A:The range of coil voltage varies between 12V and 240V DC.

Q:What is the difference between contactor and contactor modular?

A:The key distinguishing feature of a modular contactor is its silent operation, which is why it is often referred to as a silent contactor. This critical characteristic sets it apart from power contactors and makes the modular contactor the preferred choice for indoor applications where noise levels must be kept to a minimum.

Q:What is a solar connector?

A:Solar connectors play a crucial role in establishing electrical connections within solar energy systems. They come in various types, including standard non-connector junction boxes, and are considered to be the essential components of solar modules in the industry.

Q:What are solar connectors called?

A:CHYT MC4 connectors are a standard type of single-contact electrical connectors that are widely employed for interconnecting solar panels.

Q:What connectors to use for solar panels?

A:CHYT MC4 connectors have become popular in modern solar modules due to their ability to simplify and expedite the process of wiring a solar array. These connectors are available in male and female types and are specifically designed to snap together.

Q:What are the best solar connectors?

A:CHYT MC4 connector has become the ubiquitous choice for connecting solar panels and module-level devices like power optimizers and microinverters, so much so that it is now nearly universal in the industry.

Q:Do all solar panels use MC4 connectors?

A:MC4 solar connectors are the standard for modern solar panel systems. These connectors have a durable IP67 rating, which ensures their waterproof and dustproof capabilities. They are compatible with both 4mm and 6mm solar wires and offer reliable performance in a variety of weather conditions.

Q:Are MC4 connectors waterproof?

A:The connection type found on all new solar panels is MC4, which ensures a secure electrical connection and is sealed with an IP67 waterproof and dustproof rating.

Q:What is a PV connector?

A:Photovoltaic connectors are utilized in solar energy applications for the purpose of linking solar panels together in arrays. They provide compatibility between power interfaces for various manufacturers.

Q:What is a PV cable?

A:Photovoltaic wire, which is also referred to as PV wire, is a type of single conductor wire that is utilized for interconnecting the various solar panels or PV systems in a photovoltaic electric energy system. PV systems or solar panels are electric power production mechanisms that harness sunlight to generate electricity through a process of energy conversion..

Q:What is the difference between PV cable and normal cable?

A:In contrast to standard DC cables that feature PVC insulation, PV cables typically come with XLPE insulation that boasts exceptional resistance to sun, weather, and extreme temperatures. Moreover, while regular DC cables typically last between five and eight years with proper upkeep, PV cables offer greater longevity.

Q:What material is PV cable?

A:PV wire is a singular conductor wire utilized in connecting PV panels in solar power generation systems. There are two kinds of conductors utilized in PV wires, which are aluminum and copper.

Q:What are the different types of PV cables?

A:There are typically three categories of cables utilized in a photovoltaic (PV) system, which include DC solar cables, Solar DC main cables, and Solar AC connection cables.

Q:Can PV wire be buried?

A:PV cables are appropriate for use in direct burial applications and are suitable for conductor operating temperatures of up to 90°C in both wet and dry locations.

Q:What does distribution board box do?

A:CHYT Distribution Panel, also known as a Distribution Board or DP, plays a crucial role in an electrical power supply system. Its purpose is to divide an incoming electrical power feed into several subsidiary or secondary circuits. Typically, each of these secondary circuits will be safeguarded with a fuse or circuit breaker.

Q:What is another name for distribution box?

A:A distribution board, also referred to as a panel board, circuit breaker panel, electrical panel, or DB board, is an essential element of an electrical power distribution system.