SFA-RM units are Gas insulated Ring Main Units, designed for supplying sustainable energy, protecting electrical equipment in secondary distribution networks up to 17.5 kV. SFA-RM units are the best solution for indoor/outdoor distribution substations and with their compact design; they suit various network applications such as transformer substations, wind power plants, industrial zones..etc.

Technical Specifications:

• Gas insulated Ring Main Units
• Rated voltage Ur = 36/24/17.5 KV
• Rated thermal current (at 40 °C) Ir= 630 A
• Short circuit withstand current = 16/21 kA
• Short circuit duration tsc= 3 sec
• Power frequency Withstand voltage (1 min) Ud = 38/50/70 kV
• Lightning Impulse withstand voltage Up = 95/125/170 kV
• Loss of service continuity category (LSC) LSC2A-PM
• Internal arc classified sides AFLR
• Degree of protection : IP41 & IP43 for indoor / IP54 for outdoor