Phlox Energy
1 / 5
DC Fuse For Overcurrent Protection Of solar photovoltaic system
The GDPV type fuses are suitable for lines with rated DC voltage up to 1000V and rated current up to 32A. It provides short-circuit protection for:
Operation Temperature: -40°C to 150°C
Rated breaking capacity: up to 33kA
Complies with China national standard GB/T13539.6, IEC60269-6.
The altitude of the installation site should not exceed 2000m (if you want to exceed 2000m, you need to indicate the requirements, and design and development can be done according to customer requirements).
| Installation altitude (m) | Percentage of current derating (A) | Percentage of Insulation performance derating (V) |
|---|---|---|
| 2000 | 100% | 100% |
| 3000 | 95% | 90% |
| 4000 | 90% | 80% |
| 5000 | 85% | 70% |
Example: If the rated current is 18A and the installation site altitude is 5000m, the actual selection is: 18 * 85% ≈ 15.3A.
The rated voltage of photovoltaic fuses does not need to be derated for installation altitudes not exceeding 5000m, but it is affected by air pressure on the power frequency withstand voltage and insulation performance to a certain extent. The test voltage of DC 1001-1500V is 3820V, and our products reach at least 6000V, so here is no need to consider.
The following table and curve show the influence of ambient temperature on current carrying capacity:
| T (ºC) | Ambient Temperature-bearing Capacity Factor (A) |
|---|---|
| -20 | 1.09 |
| -10 | 1.07 |
| 0 | 1.05 |
| 10 | 1.03 |
| 20 | 1.02 |
| 30 | 0.98 |
| 40 | 0.96 |
| 50 | 0.94 |
| 60 | 0.93 |
| 70 | 0.92 |
| 80 | 0.89 |
| 90 | 0.87 |
| 100 | 0.85 |
| 110 | 0.83 |
| 120 | 0.81 |
Curve A: Photovoltaic fuse link curve
Example: In some applications, the ambient temperature is 25°C, and the rated current of the photovoltaic (gPV type) fuse is selected as 25A. If the fuse is used in a high-temperature environment of 50ºC, it must be derated. The environmental bearing capacity curve A shows that the percentage of the rated operating value at 50°C is 0.94. The rated current value of the fuse should be reselected as follows:
If you need derating capacity, please contact us to customized the fuse.
"gPV" refers to a DC fuse with a full range of breaking capacity for overcurrent protection of solar photovoltaic systems.
The variable cross-section melt made of silver flakes is encapsulated in a high-strength melt tube. The melt tube is filled with chemically treated high-purity quartz sand and special treatment chemicals as the arc extinguishing medium. The welding and the contacts are firmly electrically connected.
Figure 1
| Fuse type | Rated Voltage (V) | Rated Current (A) | Figure No. | Dimensions/Size D×L (mm) | Dissipated power (W) |
|---|---|---|---|---|---|
| GDPV-30 (gPV) | DC1000V | 1,2,3,4,5,6,8,10,12,15,16,20,25,30,32 | 1 | 10×38 | ≤4.5 |
Figure 2
| Base model | Fuse size | Rated Voltage | Rated Current | Dimensions / Size | Dissipated power (W) | Torque |
|---|---|---|---|---|---|---|
| GDPV-30D | 10×38 | 1000Vdc | 32A | See figure 2 | 4.5W | 2.5Nm |
| GDPV-30DL | 10×38 | 1000Vdc | 32A | See figure 2 | 4.5W | 2.5Nm |
When the current flows from terminal A to terminal B, the fuse is in parallel with the LED. Due to the presence of a high resistor in series with the LED, the current through the LED is relatively small, so the LED does not light up. Therefore, all the current passes through the fuse. When the fuse blows, the current flowing from terminal A to terminal B all passes through the LED. At this time, the current through the LED is relatively large, so the LED lights up.
| Serial number | Rated current (A) | Pre-arcing I²t | Total I²t | 0.8In(W) | 1In(W) |
|---|---|---|---|---|---|
| 1 | 1 | 1.1 | 3.9 | 0.99 | 1.30 |
| 2 | 2 | 1.5 | 5.2 | 1.04 | 1.36 |
| 3 | 3 | 2.4 | 8.6 | 1.08 | 1.42 |
| 4 | 4 | 2.9 | 11.4 | 1.2 | 1.58 |
| 5 | 5 | 6.7 | 25.7 | 1.39 | 1.83 |
| 6 | 6 | 10.5 | 40 | 1.40 | 1.84 |
| 7 | 8 | 15.2 | 57 | 1.42 | 1.86 |
| 8 | 10 | 20 | 62 | 1.58 | 2.08 |
| 9 | 12 | 30.4 | 143 | 2.00 | 2.62 |
| 10 | 15 | 45.6 | 205 | 2.24 | 2.95 |
| 11 | 16 | 49.8 | 220 | 2.33 | 3.06 |
| 12 | 20 | 79.8 | 315 | 2.37 | 3.12 |
| 13 | 25 | 114 | 486 | 2.63 | 3.46 |
| 14 | 30 | 143 | 713 | 2.88 | 3.78 |
| 15 | 32 | 148 | 722 | 3.00 | 3.95 |
"gPV" Fuse assigned time with current
| "gPV" Fuse rated current A | Assigned time h | Assigned Current | |
|---|---|---|---|
| Inf | If | ||
| In ≤ 63 | 2 | 1.05In | 1.35In |
| 63 < In ≤ 160 | 2 | 1.13In | 1.45In |
| 160 < In ≤ 400 | 3 | ||
| In > 400 | 4 | ||
DC Solar Fuse Package:
DC Solar Fuse Delivery Time:
3-15 days after confirming order. The detailed delivery date should be decided according to the production season and order quantity.
DC Solar Fuse Shipping:
