Traditionally, bypass diodes can only be inspected for good working condition at night or when power is not being generated by the solar panels in order to verify that any applied current is guided past the solar cells. With the FT4310 Bypass Diode Tester, you can detect for open faults even when the sun is out without covering the panels. Also test for short-circuit faults and cell string losses.
| Measurement items | Bypass diode comparator judgment, Bypass route resistor, Open-circuit voltage, Short-circuit current, Measurement (applied) current |
|---|---|
| Measurement object | Crystal system string
Open-circuit voltage: 1000 V DC or less, Rated current: 2 A to 12 A DC Caution: The FT4310 cannot measure strings that are installed in parallel or complex strings that are installed in combination. |
| Measurement method | Short-circuit and pulse voltage application |
| Measurement accuracy | Open-circuit voltage: ±0.2% rdg. ±3 dgt. (at 0 to ±1000 V) Short-circuit current: ±3% rdg. ±3 dgt. (at 0.0 to 15.0 A) Bypass route resistance: ±5% rdg. ±5 dgt. (at 0.0 to 15.0 Ω, During pure resistance measurement) |
| Measurement time | 2 s or less (3 seconds or less when measurement voltage is 10 V or less) |
| Possible number of measurements | 3000 times (Comparator, backlight, Bluetooth® OFF) LR6 Alkaline battery × 6 |
