When diving into the world of solar energy, the photovoltaic DC combiner box stands out as a pivotal component. Acting as the heart of the photovoltaic array, it’s the power source for the entire photovoltaic station. The components within this box play a crucial role in its efficiency and reliability. So, how do you make … Read more
As for MCBs, 1P+N, 1P, 2P are generally used as the control for single-phase electrical appliances. (1) Differences: 1P—Single-pole circuit breaker: Has thermal trip function, can only control live wire (phase wire), module size 18mm; 1P+N—Single-pole + N circuit breaker: Controls both live and neutral wires, but only the live wire has the thermal trip … Read more
Unlike a DC isolator, which must switch both the positive and negative wires, an AC isolator should be selected based on whether the supply is single phase, as is common in home installations, or three phase, as is common in commercial or industrial installations. A 2pole isolator should be used to switch the live and neutral … Read more
What is a DC Fuse? A DC Fuse is an electrical protection device employed to interrupt the flow of current in order to prevent fires or equipment damage when a circuit becomes overloaded or experiences a short circuit. It stands as a pivotal safety apparatus, commonly utilized within electrical systems, ensuring that currents remain within safe parameters. … Read more
The ERP Series DC Rapid Shutdown Switch Device RSD (PV firefighter safe switch) which can achieve module-level rapid shutdown. Which in turn will significantly improve thesafety of PV power generation systems. RSD uses PLC communication. The signalis transmitted by the inverter with built-in transmitter function through the DC bus.After The ERP RSD receives the signal, the switch … Read more
1P, 2P, and 1P+N circuit breakers are types of circuit protection devices used in electrical systems to prevent overcurrent and protect against electrical faults. Each of these breakers has specific applications and characteristics: 1P Circuit Breaker (Single-Pole): A 1P circuit breaker is designed to provide protection for a single conductor or one phase of an electrical circuit.It is commonly … Read more
What is Surge Protective Device? Surge Protective Devices (SPDs), also known as surge protectors or lightning arrestors, are devices designed to protect electrical and electronic equipment from voltage spikes or surges, which can be caused by lightning strikes, electrical faults, or other factors. There are three main types of SPDs: Type 1, Type 2, and Type … Read more
In contemporary society, where electricity serves as a linchpin for both production and daily life, the consistent and stable supply of electrical power assumes paramount importance. Regrettably, power systems are susceptible to disturbances in the form of voltage surges, which have the potential to inflict significant damage upon electrical equipment. In response to this challenge, … Read more
The Role of Surge ProtectorsSurge protectors, in reality, are a type of voltage-limiting device, typically utilizing varistors with high-pass, low-resistance characteristics. When the electrical grid operates under conditions not exceeding the maximum continuous operating voltage (Up), the gap between the two electrodes in the surge protector remains in a high-resistance state. However, if the electrical grid … Read more
Conventional circuit breakersand fuses are unable to fully meet the requirements of SPD protection devices for the following reasons:When SPD degrades and malfunctions, it may enter a short-circuit failure state. Miniature circuit breakershave insufficient breaking capacity, and molded-case circuit breakers and fuses may not respond promptly.Without robust protective devices, it may lead to fires or explosions, resulting … Read more