Q1: What is the difference between a Surge Protection Device (SPD) and a Surge Arrester?
A: While both terms are often used interchangeably, a Surge Arrester is typically designed for installation at the service entrance (before the main disconnect) to protect against large external surges like lightning. A Surge Suppressor or SPD is generally used downstream to protect sensitive equipment from internal switching transients.
Q2: How do I choose the right SPD for my project?
A: Selection depends on several factors: the type of electrical system (e.g., TN, TT), the location of installation (Type 1, 2, or 3), the expected surge current, and the equipment to be protected. We recommend consulting with our technical team, as we represent multiple brands including CITEL and can advise on the most suitable solution.
Q3: What is an ESE (Early Streamer Emission) lightning rod and how does it work?
A: An ESE lightning rod is an active air terminal that emits an upward streamer earlier than a conventional Franklin rod, thereby extending its protection radius. This makes it ideal for protecting large surfaces, isolated structures, or buildings where reducing the number of visible roof elements is desired.
Q4: What is the difference between Earthing and Grounding?
A: In Hong Kong, "Earthing" (following British/IEC standards) and "Grounding" (following US standards like NFPA 780) essentially refer to the same concept: creating a low-resistance path for electrical current to safely discharge into the earth. Both terms are used interchangeably in the industry.
Q5: What is a Lightning Strike Counter and why do I need one?
A: A lightning strike counter is an electromechanical device that counts the number of times a lightning rod is struck. It helps maintenance teams monitor lightning activity and verify that the protection system is functioning properly. [More..]
Q1: Does my building need a lightning protection system?
A: A risk assessment in accordance with IEC 62305 or NFPA 780 is recommended to determine the need and level of protection. All buildings are subject to lightning damage, and NFPA 780 provides a Risk Assessment guide to evaluate a structure's vulnerability.
Q2: What standards do you follow for lightning protection systems?
A: We design and install systems in accordance with IEC 62305 and NFPA 780 standards. For ESE systems, we also reference NFC 17-102 (the French standard).
Q3: Do you provide products and services for WSD (Water Supplies Department) projects?
A: Yes. We have extensive experience supplying lightning protection and earthing products for WSD projects and other government infrastructure works across Hong Kong. Please refer to our project reference pages for details. [More..]
Q4: Can you supply products for Macau projects?
A: Yes. We are an exclusive agent for multiple international brands in both Hong Kong and Macau. We have supplied products for numerous Macau projects, including LRT substations, power plants, hospitals, and residential developments.[More..]
Q5: What is the minimum height for installing an ESE lightning rod?
A: The tip of an ESE lightning rod should be located at least 2 meters above the protected area, including any antennas, cooling towers, or roofing structures.
Q1: Do you only sell products or do you also provide installation?
A: We are primarily a product supplier and exclusive agent for multiple leading brands. We supply high-quality lightning protection, surge protection, and earthing components to engineering companies and contractors. We can also provide technical support and design consultation upon request.
Q2: Which brands do you represent in Hong Kong and Macau?
A: We are the exclusive agent for VFC, Lyncole, CITEL, Kumwell, France Paratonnerres, and Aplicaciones Tecnológicas in Hong Kong and Macau.
Q3: How can I get a quote for a project?
A: Please contact us via our website or email with your project specifications, including system type, quantity, and delivery location. Our team will respond with a competitive quote promptly.
Q4: Do you offer technical support for the products you supply?
A: Yes. We provide technical support to help our customers select the right products, understand installation requirements, and troubleshoot any issues that may arise.
Q5: Do you have stock available in Hong Kong?
A: We maintain inventory for many of our core products in Hong Kong to support fast delivery. For specific product availability and lead times, please contact our sales team directly.