Modular 2 pole combined lightning 10/350 and voltage surge arrester 8/20 conforming to the latest IEC / EN standards Class I & II (Type 1 & 2), to protect against the effects of lightning strikes and the resultant induced voltages.
The units are suitable for both DC floating or Earthed systems and are wired in parallel and the need of fusing is not required. Wiring of a floating system requires the Earth (PE terminals) to be bonded to Earth, for a negative Earthed system the negative terminal and PE terminals are both connected to the negative voltage rail, the opposite applies for a positively Earthed system.
The unit has a front mechanically driven flag indicator per pole, green for healthy and red for fault, plus a mechanically driven auxiliary C/O contact. In a healthy state the contact is made between terminals 11 & 12. In the event of the MOV’s failing due to an intense or multiple surges the contact will change state to 11 & 14 (also indicated by the red flag). In this state protection has been lost, the unit will need replacing.
Complies with: EN50539-11:2013
Category: Class I & II / Type 1 & 2
Protection via: High energy MOV’s (Metal Oxide Varistors) & GDT (Gas Discharge Tube)
Nominal discharge current 8/20: 12.5KA per pole
Max discharge current 8/20: 40KA per pole
Impulse current 10/350: 12.5KA per pole
Total impulse current 10/350: 25KA
Specific energy: 39KJ / Ohm per pole
Response time: <25n Sec
Thermal protection: Yes
Short circuit withstand current: 1000 Amps
Operating temperature range: -40°C to +70°C
Terminal cross section:
Max 35mm² solid cable
Max 25mm² stranded cable
Auxiliary contact: Yes
Max DC continuous voltage: 1000V
Protection level: <4.6KV
SAFETEC BR 12.5/1000VDC Y PV TCG (54.0583)
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