Products
Products
Installation & Application（安装应用） 
Installation Precautions
1）During installation, connect according to the installation diagram where "+" indicates positive terminal, "-" indicates negative terminal, and "PE" indicates ground wire.
2）Reliable PE grounding is mandatory when using power SPDs.
3)When the module's fault display window shows red, it indicates SPD failure requiring immediate replacement.
4)Lightning protection grounding must comply with regulations: use shortest possible ground wires with resistance below 10Ω.
Product Dimensions
Installation Wiring Instructions
Technical Parameters（技术参数） | Specification | |
|---|---|
| SPD Model | KDY-20L/S |
| Rated Voltage (Un) | 220V |
| Maximum Continuous Operating Voltage (Uc) | 275V |
| Nominal Discharge Current (In) (8/20µs) | 10kA |
| Maximum Discharge Current (Imax) (8/20µs) | 10kA |
| Voltage Protection Level (Up) | ≤1.2kV |
| Response Time | 25ns |
| Maximum Operating Current | 10A (series connection) |
| Communication Interface | With communication interface (normally closed contact) |
| Testing Standard | GB18802.1 |
| Certification | Type Test Certification |
| Interface | |
| Minimum Line Cross-section (Phase) | 2.5 mm² |
| Minimum Line Cross-section (Ground) | 4 mm² |
| Connection Type | Terminal connection |
| Operation Indicator | Yes |
| Power Supply | |
| Applicable Power Supply | AC 220V |
| Power System | Single-phase power system |
| Mechanical Characteristics | |
| Housing Material | Flame-retardant plastic |
| Dimensions (W×H×D) | 27×90×65 (mm) |
| Weight | 0.1kg |
| Installation Method | 35mm standard DIN rail mounting |
| Operating Environment | |
| Operating Temperature | -40℃ to +80℃ |
| Storage Temperature | -40℃ to +80℃ |
| Relative Humidity | 5 to 95% (non-condensing) |
| Protection Rating | IP20 |
| Altitude | ≤3000m |
| Warranty | |
| Product Warranty | 3 years |
Ordering and Model Selection（订货选型） | Product model | Product description |
|---|---|
| KDY-20L120P/S | LED street light surge protective device, operating voltage Un=120V; Uc=150V; Imax=20kA (8/20μs), Up<900V, suspended mounting。 |
| KDY-20L220P/S | LED street light surge protective device, operating voltage Un=220V; Uc=270V; Imax=20kA (8/20μs), Up<1200V, suspended mounting。 |
| KDY-20L240P/S | LED Street Light Surge Protective Device (SPD), Operating Parameters: Un=240V; Uc=275V; Imax=20kA (8/20μs); Up<1200V, Suspended Mounting。 |
| KDY-20L277P/S | LED Street Light Surge Protective Device (SPD), Technical Specifications: Un=277V; Uc=320V; Imax=20kA (8/20μs); Up<1.4kV, Suspended Mounting。 |
| KDY-20L347P/S | LED Street Light Surge Protective Device (SPD), Technical Specifications: Un=347V; Uc=420V; Imax=20kA (8/20μs); Up<1.9kV, Suspended Mounting。 |
*Please send the inquiry email containing specific product requirements (such as model, quantity, technical parameters, etc.) to the designated email address salina@kejia.com.
（请将包含具体产品需求（如型号、数量、技术参数等）的询价邮件发送至指定邮箱 salina@kejia.com）
