Surge arrester POLIM-C ND
Silicone-housed surge arrester for DC traction system up to 3 kV with class DC-A
POLIM-C..ND is a surge arrester with metal-oxide (MO) resistors without spark gaps directly molded in silicone housing, grey color, designed and tested according to IEC 62848-1 / EN 50526-1. Fire and smoke behavior tested and classified according to EN 45545-2.
It is used for secure protection of power electronics in DC systems against overvoltages from atmospheric discharges and switching conditions, it is also recommended for fixed installations in traction networks.
The arresters also meet the requirements for A1 functions according to the VDV 525 recommendation:
- A1 – overvoltage protection of equipment connected to traction supply voltage
Applications
- Devices in DC installations
- Power electronics
- Converters
- Railway applications
Brief performance data
| POLIM-C ND | ||
|---|---|---|
| DC class | DC-A | |
| Continuous voltage through arrester (Uc=Ur) | kV DC | 0.56-4.7 |
| Short-circuit current (Is) | kA DC | 20 |
| Charge transfer capability (Qt) | As | 1.0 |
| Thermal energy rating (Wth) | kJ/kV (Ur) | 4.5 |
For more details see the data sheet in downloads below.
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