In an electrical systems, Solar DC SPDs are usually installed in tap-off configuration (in parallel) between the live conductors and the earth. The operating principle of Solar DC SPD can be similar to that of a circuit breaker.
In normal use (no overvoltage): the Solar DC SPD is similar to an open circuit breaker.
When there is an overvoltage: the Solar DC SPD becomes active and discharges the lightning current to earth. It can be likened to the closing of a circuit breaker which would short-circuit the electrical network with the earth via the equipotential earthing system and the exposed conductive parts for a very brief instant, limited to the duration of the overvoltage.
For the user, the operation of the Solar DC SPD is totally transparent as it only lasts a tiny fraction of a second.
When the overvoltage has been discharged, the Solar DC SPD automatically returns to its normal state (circuit breaker open).
1.DC SPD in Solar Product Details of Quality DC SPD in Solar made in China:
| DC SPD in Solar Series | YL5-C40-PV | ||
| UCPV (V DC) |
1000V |
1200V |
1500V |
| Max System Discharge Current (8/20 μs) [Imax] |
40kA |
40kA |
40kA |
| Voltage Protection Level [UP] |
≤3.8kV |
≤4.5kV |
≤4.5kV |
| Voltage Protection Level at 5kA [UP] |
≤3.2kV |
≤4.0kV |
≤5.0kV |
| Integrated Fuse Breaking Capacity/Interrupting Rating |
40kA/1000Vdc |
40kA/1200Vdc |
40kA/1500Vdc |
| Technology | Short-Circuit Interruption (SCI) Overcurrent Protection | ||
| Operating Temperature Range [TU] | -40°C to +80°C | ||
| Nominal Discharge Current (8/20 μs) [(DC+/DC-) --> PE] [n] | 20kA | ||
| Response Time [tA] | <25ns | ||
| Operating State/Fault Indication | Green (good)/Red (replace) | ||
| Conductor Ratings and Cross-Sectional Area | Min | 60/75°C 1.5mm2/14AWG Solid/Flexible | |
| Max | 60/75°C 35mm/2AWG Stranded/25mm2/4AWG Flexible | ||
| Mounting | 35mm DIN Rail per EN 60715 | ||
| Enclosure Material | UL 94V0 Thermoplastic | ||
| Degree of Protection | IP20 | ||
| Capacity | 3 Modules, DIN 43880 | ||
| Standards Information | IEC 61643-31 Type 2, IEC 61643-1 Class II | ||
| Product Warranty | Five Years** | ||
2.FAQ of Quality DC SPD in Solar made in China
Q:When I can receive quotation and detail information after send the enquiry?
A: Reply will be sent in 24hours.
Q:What's the difference between you and other suppliers?
A: We have our own design box with PC/ABS material.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q:Can I get a sample for test before place order?
A:Of course!
Q:How's the delivery?Because I really need them is urgently?
A: Samples cost 2-3 days. Bulk order cost 12-15 days.
Q: If i want to release order, what's the payment method you accept ?
A: We accept T/T, Western union, Trade Assurance.
