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● The SPD is single-port, with electric shock protection, indoor fixed installation, and voltage limiting type.
● The SPD has a built-in disconnector. When the SPD fails due to overheating or breakdown, the disconnector will automatically disconnect it from the power grid and send an indication signal at the same time. The visible window shows white when the SPD is working normally, and red after failure and disconnection.
● 1P+N, 2P+N and 3P+N are composed of 1P, 2P, 3P SPD + NPE neutral-ground protection modules, which are applied to TT, TN-S and other power supply systems.
LYD1-C Series Surge Protective Devices (hereinafter referred to as SPD) are suitable for low-voltage AC power distribution systems including IT, TT, TN-C, TN-S and TN-C-S, protecting against surges caused by overvoltages from indirect and direct lightning strokes or other transient overvoltages. These are Class II tested products in accordance with IEC61643-1:2005 and GB18802.1:2011 standards, designed for Class D surge protection. They feature common mode (MC) and differential mode (MD) protection and comply with GB18802.1, IEC61643-1 and other relevant standards.
| Item | LYD1-C40 Specifications | |||
| Maximum Continuous Operating Voltage Uc (VAC) | 420 | 385 | 320 | 275 |
| Voltage Protection Level Up (kV) ≤ | 2 | 1.8 | 1.6 | 1.5 |
| Maximum Discharge Current (8/20μs) Imax (kA) | 40 | |||
| Nominal Discharge Current (8/20μs) In (kA) | 20 | |||
| Response Time (ns) | ≤25 | |||
| Protection Class | IP20 | |||
| Failure Indication | White for Normal, Red for Failure | |||
| Remote Signaling Function | Optional Accessory | |||
| Remark | Other Uc Values are Customizable | |||
● It is installed at the junction between LPZ1 and LPZ2 zones, at the front end of the protected equipment, to provide Class C protection. It is mounted on a 35mm standard DIN rail, with multi-strand copper connecting wires of 2.5~35mm².
● To prevent the failure of surge protective devices from affecting the safe operation of the power grid, a matching LYSCB backup protector must be connected in series at the front end of each pole of the SPD.
● Suitable for installation in floor distribution boxes, computer centers, telecommunication rooms, elevator control rooms, cable TV equipment rooms, fire control centers, villas, residential distribution boxes, etc.
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