SA-P 110 kV 1.1 C
Overvoltage Limiters OPN-P 110 kV 1.1 C
Overvoltage limiters (OPN) are designed to protect the insulation of electrical installations in AC networks with a voltage of 110 kV, a frequency of 50 Hz, and an effectively grounded neutral from switching and lightning overvoltages. The products comply with GOST R 52725-2021 and are manufactured according to TU 27.12.10–046–21639232-2021.
Technical Specifications:
- Nominal discharge current: 10 kA
- Impulse current 4/10 µs: 100 kA
- Explosion safety current:
- duration of at least 1 second — at least 0.6 kA
- duration of at least 0.2 seconds — at least 65 kA
- Residual voltage during lightning current impulses with a duration of 8/20 µs:
- at 5 kA — 213.2 kV
- at 10 kA — 232.3 kV
- at 20 kA — 261.3 kV
- Residual voltage during switching currents with a duration of 30/60 µs:
- at 250 A — 178.4 kV
- at 500 A — 180.0 kV
- at 1000 A — 190.8 kV
- Residual voltage during a steep current impulse of 10 kA with a duration of 1/10 µs: 254.7 kV
- Charge capacity: 1.1 C
- Classification voltage at 2 mA current: 91.3 kV
- Thermal energy: at least 4.0 kJ/kV