FAQ
Where is Type 1 SPD commonly used?
Type 1 SPDs are commonly used in main distribution boards, industrial plants, solar PV systems, wind power systems, telecom stations, commercial buildings, and facilities with external lightning protection systems.
Can Type 1 SPD replace Type 2 SPD?
Not always. Type 1 SPD is mainly used for high-energy lightning current discharge, while Type 2 SPD provides further voltage limitation in downstream distribution panels. In many systems, Type 1 and Type 2 SPDs are used together for coordinated protection.
What is the key parameter of a Type 1 SPD?
The key parameter of a Type 1 SPD is Iimp, which represents the impulse current discharge capability under a 10/350 μs waveform. This value indicates how much lightning current the SPD can safely discharge.
When should I use a Type 1 SPD?
You should use a Type 1 SPD when the building has an external lightning protection system, overhead power lines, high lightning exposure, or when the installation is located in an industrial, photovoltaic, wind power, or critical infrastructure environment.
What is a Type 1 / Class I SPD?
A Type 1 / Class I SPD is designed to discharge high-energy lightning current and is usually installed at the main power entrance of a building or electrical system. It is suitable for locations with direct lightning strike risk or external lightning protection systems.
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The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.
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