VARISIL™ HE Metal Oxide Surge Arrester
Class 1 up to 36kV
Application field
The surge arresters protect the network and their equipment from over-voltages. They are of key importance to improve the quality and reliability of the power supply.
Design
Our VARISIL™ HE surge arresters fulfill the requirements of IEC 60099-4 editions 2009 and 2014.
Operating conditions
Ambient temperature: -50°C up to + 50°C
The surge arresters protect the network and their equipment from over-voltages. They are of key importance to improve the quality and reliability of the power supply.
Design
Our VARISIL™ HE surge arresters fulfill the requirements of IEC 60099-4 editions 2009 and 2014.
Operating conditions
Ambient temperature: -50°C up to + 50°C
Improves the quality and reliability of the power supply
Rated voltage: from 3kV up to 36kV
Nominal discharge current In: 10kA
High current impulse: 100kA
Line discharge class: Class1
Short circuit withstand Is: 20kA / 0.2s
Optional Accessories
S3D2 option: Insulating bracket and built-in ground lead disconnector
The disconnecting device S3D2 separates automatically from earth the bottom terminal of the failed arresters. It ensures continuity of service. It also provides a visual indication of the failure. The disconnector is not a fault clearing device.
The disconnecting device S3D2 separates automatically from earth the bottom terminal of the failed arresters. It ensures continuity of service. It also provides a visual indication of the failure. The disconnector is not a fault clearing device.
| Rated Voltage (Ur) | from 3kV up to 36 kV |
| Nominal Discharge | 10 kA |
| Classification (ed. 2014) | Designation DH |
| Repetitive charge transfer rating (Qrs) | 0.5 C |
| Thermal charge transfer rating (Qth) | 1.1 C |
| Line discharge class (ed. 2009) | Class 1 |
| High current impulse | 100 kA |
| Long duration current impulse | 300 A 2000μs |
| Short circuit withstand (ls) | 20 kA / 0.2s |
| Specified long-term load (SLL) | 100 N.m |
