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● The SPD is single-port type, featuring electric shock protection, indoor fixed installation, and voltage-limiting operation.
● The SPD is equipped with a built-in disconnector. When the SPD fails due to overheating or breakdown, the disconnector automatically disconnects it from the power grid and sends an indication signal. The visual window displays white for normal operation and red for failure.
● 1P+N, 2P+N and 3P+N models consist of 1P, 2P, 3P SPD modules plus NPE neutral-ground protection modules, suitable for TT, TN-S and other power supply systems.
LYD1-B series surge protective devices (hereinafter referred to as SPD) are suitable for wind power supply systems of 50/60Hz AC and 690V, providing protection against lightning strikes or other transient overvoltages. They are applied for lightning protection of power systems in areas with high lightning risk. The product complies with standards including IEC61400-24 and IEC61643-1.
| Model & Specification | LYD1-B80 | LYD1-B60 |
| Maximum Continuous Operating Voltage Uc (VAC) | 690 | 690 |
| Voltage Protection Level Up (kV) ≤ | 4.2 | 4.0 |
| Maximum Discharge Current (8/20μs) Imax (kA) | 80 | 60 |
| Nominal Discharge Current (8/20μs) In (kA) | 40 | 30 |
| Response Time (ns) | <25 | <25 |
| Protection Class | IP20 | IP20 |
| Failure Indication | White for Normal, Red for Failure | White for Normal, Red for Failure |
| Application | Primary Incoming Line Protection | Primary Incoming Line Protection |
| Remote Signaling Function | Optional Accessory | Optional Accessory |
| Ambient Temperature | -40℃~+80℃ | -40℃~+80℃ |
| Remark | Other Uc Values are Customizable | Other Uc Values are Customizable |
● The product is installed at the junction of LPZ0B / LPZ1 zone and LPZ2 zone, mounted on 35mm standard DIN rail, connected with 6~35mm² multi-strand copper flexible wires.
● The grounding conductor shall adopt bicolor wires with cross-section ≥16mm², and the length shall not exceed 500mm.
● 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 surge protective device.
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