DC Surge Protective Devices
SPD lightning protection module (surge protector) is mainly suitable for 50Hz (or 60Hz) impact flow capacity is not greater than (60 kA) electrical circuit, limit transient overvoltage amplitude, absorption, elimination, consumption or discharge of surge current energy, make the protected electrical components from an overvoltage category to another low overvoltage category, suitable for household, and similar places electrical appliances in the line induction lightning overvoltage, operating overvoltage protection role.
Product Description
Applicable principles
SPD lightning protection module (surge protector) is mainly suitable for 50Hz (or 60Hz) impact flow capacity is not greater than (60 kA) electrical circuit, limit transient overvoltage amplitude, absorption, elimination, consumption or discharge of surge current energy, make the protected electrical components from an overvoltage category to another low overvoltage category, suitable for household, and similar places electrical appliances in the line induction lightning overvoltage, operating overvoltage protection role.
Normal working conditions and installation conditions
● Ambient temperature is-40℃ – + 70℃.
● The elevation shall not exceed 2000m.
● Relative humidity is not greater than 90% (25℃).
● Installation mode is matched with the TH35mm wide guide rail.
● Applicable ground pump flow “IT” ” TT.TS,TN-N-S”
● The inclination of with the vertical plane does not exceed 5.
● No impact vibration or no shaking place
● No medium without explosion risk, and no gas and dust medium enough to corrode metal and destroy insulation.
Main structure and working principle
In the photovoltaic power generation system, there are protectors between the grounding in the positive and negative electrode lines. Under normal circumstances, the protector is in a state of high resistance. When the power grid is due to lightning or other original, due to the surge voltage, the protector will immediately turn on at the nanosecond level, within time, introducing the surge voltage into the earth, so as to protect the electrical equipment on the power grid. When the surge voltage passes through the protector, and the protector disappears back to the high resistance state again, so as not to affect the normal operation of the power grid.
Specifications
| Model | SPD-PV | ||
| Rated Voltage (DC) | 500V~1200V | ||
| Maximum continuous working voltage uc (DC) |
PV1000V | PV1200 | PV1500V |
| Protection level | C(two stage) | ||
| Nominal discharge current I In (8 / 20 uS) (kA) |
20 | ||
| Maximum Discharge Current Imax (8 / 20 uS) (kA) | 40 | ||
| Protection level up (kV) | 3.2kV | 4.5kY | 5.0kV |
| Response time (nS) | ≤25 | ||
| ambient humidity | -40℃-+70℃ | ||
| Housing color module / base | white | ||
| Maximum connection diameter (mm ²) | 35 hard lines or multiple strands | ||
| Suggested wiring (mm ²) | 4~25 | ||
| Circuit breaker type selection is recommended | 125A~250A | ||
| Install | 35mm electrical guide | ||
Product Features
Installation method and matters needing attention
Fault judgment of the surge protector:
① The indicator window of the module is green (normal). When the module deteriorates, the indicator window should be replaced in time;
② Surge protector can be equipped with (FS) remote remote communication alarm, remote communication touch There is a constant open and one constant close, one module or multiple modules of the surge protector failure, the contact will close, send a fault alarm signal, indicating that the module failure must be replaced.
③ Always check the air switches or fuses connected in series on the line.
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