Features

1. Strong anti-electromagnetic interference ability

Optical fiber transmits optical signals, which are not affected by strong electromagnetic interference, ground loops, etc. in the power system. It can ensure that arc signals are not distorted during transmission and avoid false alarms or signal delays caused by electromagnetic interference.

Traditional cables are easily affected by electromagnetic fields when transmitting electrical signals, while the insulation characteristics of optical fiber enable it to work stably in high voltage and high current environments, especially suitable for complex electromagnetic environments such as switch cabinets.

2. Fast transmission speed and low loss

The transmission speed of optical signals in optical fiber is close to the speed of light. The signal transmission delay from the arc sensor to the main control unit is negligible. With the fast response protection device, it can achieve 5-10ms fault disconnection, meeting the "extreme response" requirements of arc protection.

The signal loss of optical fiber is extremely low, and it can be transmitted over long distances without relaying, ensuring signal integrity.

3. Excellent insulation performance

Optical fiber is made of glass or plastic, which is non-conductive in itself. No additional insulation measures are required between it and high-voltage equipment, avoiding the risk of short circuit caused by insulation aging of traditional cables and improving system safety.

In an arc fault, a high-voltage arc may cause insulation breakdown of surrounding equipment, while the insulation characteristics of optical fiber enable it to transmit signals normally in a fault environment and will not become a fault conduction path.

4. Strong system scalability

The modular optical fiber network can easily expand the number of sensors and the monitoring range. For example, a master control unit can connect dozens of arc expansion units through optical fiber

Application scope of optical fiber for arc protection

1. Industrial power equipment

Application scenarios: large motors, rectifier cabinets, frequency converters, etc. in metallurgy, chemical industry, mining and other industries. These equipment have large currents during operation and high risk of arc faults. The optical fiber protection system can quickly cut off the fault and avoid production stoppage losses.

2. New energy power system

Application scenarios: new energy equipment such as photovoltaic inverters, energy storage converters, and wind power switch cabinets. In such scenarios, power electronic devices are densely packed, and arc faults are prone to chain reactions. The anti-interference and rapidity of optical fiber protection are particularly important.

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