Complaint
* Brief instruction
Zinc-Oxide arrester is used for protection of outdoor distribution overhead line, transformer, cable connector and electric equipment from being damaged by lightning Impulse voltage and operated over-voltage.
How does ZnO varistor work? ZnO has good non-linear Volt-Ampere characteristics which flowing current is tiny when working under normal voltage. However, when there's over-voltage, its non-linear Volt-Ampere characteristics takes protection effect on leakage and breaking current, as the resistance will decrease rapidly and leak the energy of over-voltage.
Products are completely in accordance with IEC60099-4 standard.
√ MOV discs
| Electrical characteristics | Specification | Unit | |
| Rated voltage of Surge arrreser | 11 | kV | |
| Nominal discharge current | 5 | 10 | kA |
| Rated frequency | 50 | Hz | |
| Maximum continuous operating voltage | 9.4 | kV | |
| Steep current impulse residual voltage | 40 | kV(Crest) | |
| Lightning Impulse residual voltage | 33 | kV(Crest) | |
| Switching Impulse residual voltage | 30 | kV(Crest) | |
| Long duration current impulse withstand voltage | 150 | 250 | A |
| High current impulses | 65 | 100 | kA (Crest) |
| Rated Short-circuit current | 20 / 12 / 6 / 0.6 ± 0.2 | kA | |
| Class of Surge arrester | Class 1 or Class 2 | ||
| Application | Distribution type | ||
| With or without gap | Gapless | ||
| Designation of arrester | Design B | ||
| Spare parts | |||
| NEMA A or B mounting bracket | with/without | ||
| Disconnector | with/without | ||
| Earth lead | with/without | ||
| Bird guard cap | with/without | ||
| Line clamp | with/without | ||
| Upper terminal (incoming line) bolt size | M12 | ||
| Lower termina (outgoing line) bolt size | M10 | ||
| Material | |||
| Upper terminal | Stainless steel 304 | ||
| Housing | Polymer type | ||
| Color of housing | Dark grey / light grey | ||
| Varistor | High quality zinc oxide varistor | ||
| Size of Varistor | 35mm / 38mm /40mm / 42mm | ||
| Package | |||
| Qty/package | 1 | pc/carton | |
| Service conditions | |||
| Environment maximum temperature | 40 | ºC | |
| Pollution level | Heavy | ||
| Altitude | ≤1000 | Meter | |
| Standard | IEC60099-4:2014 | ||
