Multi-air-gap SPD Module
Operation Fundamentals
The Multi-air-gap SPD Module includes 9 air-gaps connected in serial (G1 to G9, Fig.2). Each air-gap consists of one pair of carbon-electrode separated by an insulation ring, and each air-gap but for G1 is paralleled by a capacitor (C1 to C8). Based on such a design, the SPD is non-conductive on the maximum continuous operation voltage Uc, in case of subjected lightning surge over-voltages, the gap G1 breakdowns at first due to nearly all surge voltages applying on it, because G2 to G9 are short-circuited by the capacitors. After G1 has been turned into conduction, G2 exposed to surge voltages and breakdown immediately, and then G3 to G9. It is obvious that the holdover voltage of the HIT-G50 is the sum of the holdover voltage of 9 gaps that is far more than the Uc, and therefore ,the SPD will turn off immediately after the surge voltages ended, hence no follow-current occurs.
Features
* Suitable for Class I Test SPDs;
* High surge current rating up to 50 kA, 10/350 wave;
* No leakage current and no follow-current;
Designation
HIT-G && / xxx
HIT ---- Brand
&& ---- Iimp value (10/350)
xxx ---- Max. continuous operating voltage Uc
Technical Date
Technical Data |
|
Type |
HIT G15/xxx |
|
150 |
255 |
350 |
440 |
|
In accordance with |
IEC61643-1:2005 |
|
Category IEC/VDE |
I/ B |
|
Max. continuous operating voltage Uc |
150 |
255 |
350 |
440 |
|
Max. discharge current(8/20) Imax |
100KA |
|
Lightning impulse current (10/350) Iimp |
15KA |
|
Voltage protection level at 1kV/μS |
2.5KV |
2.5KV |
2.5KV |
2.5KV |
|
Response time |
≤100 ns |
|
Leakage current |
No |
|
Follow current |
No |
|
Insulation resistance |
≥103 MΩ |
|
Operating temperature range |
- 40ºC … + 80ºC |
|
Cross-section of connection wire |
Single-strand 35mm2; multi-strand 25mm2 |
|
Mounting |
35mm DIN-rail in accordance with EN 50022/DIN46277-3 |
|
Installation width |
2 modules, DIN 43880 |
|
Enclosure material |
thermoplastic; extinguishing degree UL94 V-0 |
|
Degree of protection |
IP20 |
Technical Data |
|
Type |
HIT G25/xxx |
|
150 |
255 |
350 |
440 |
|
In accordance with |
IEC61643-1 |
|
Category IEC/VDE |
I/ B |
|
Max. continuous operating voltage Uc |
150 |
255 |
350 |
440 |
|
Max. discharge current(8/20) Imax |
120KA |
|
Lightning impulse current (10/350) Iimp |
25KA |
|
Voltage protection level at 1kV/μS |
2.5KV |
2.5KV |
2.5KV |
2.5KV |
|
Response time |
≤100 ns |
|
Leakage current |
No |
|
Follow current |
No |
|
Insulation resistance |
≥103 MΩ |
|
Operating temperature range |
- 40ºC … + 80ºC |
|
Cross-section of connection wire |
Single-strand 35mm2; multi-strand 25mm2 |
|
Mounting |
35mm DIN-rail in accordance with EN 50022/DIN46277-3 |
|
Installation width |
2 modules, DIN43880 |
|
Enclosure material |
thermoplastic; extinguishing degree UL94 V-0 |
|
Degree of protection |
IP20 |
Technical Data |
|
Type |
HIT G50/xxx |
|
150 |
255 |
350 |
440 |
|
In accordance with |
IEC61643-1 |
|
Category IEC/VDE |
I/ B |
|
Max. continuous operating voltage Uc |
150 |
255 |
350 |
440 |
|
Max. discharge current(8/20) Imax |
140KA |
|
Lightning impulse current (10/350) Iimp |
50KA |
|
Voltage protection level at 1kV/μS |
2.5KV |
2.5KV |
2.5KV |
2.5KV |
|
Response time |
≤100 ns |
|
Leakage current |
No |
|
Follow current |
No |
|
Insulation resistance |
≥103 MΩ |
|
Operating temperature range |
- 40ºC … + 80ºC |
|
Cross-section of connection wire |
Single-strand 35mm2; multi-strand 25mm2 |
|
Mounting |
35mm DIN-rail in accordance with EN 50022/DIN46277-3 |
|
Installation width |
2 modules, DIN43880 |
|
Enclosure material |
thermoplastic; extinguishing degree UL94 V-0 |
|
Degree of protection |
IP20 |
