SA-P 330 kV 20 kA, 2.8 C
Overvoltage Limiter OPN-P 330 kV 20 kA 2.8 C
The nonlinear overvoltage limiter (OPN) is designed to protect the insulation of electrical installations in AC networks with a voltage of 330 kV, a frequency of 50 Hz, and an effectively grounded neutral from switching and lightning overvoltages. The product complies with GOST R 52725-2021 and is manufactured according to TU 27.12.10-058-21639232-2022.
Technical Specifications:
- Nominal discharge current: 20 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
- Impulse current 4/10 µs: 100 kA
- Climatic design and placement category according to GOST 15150: UHL1
- External insulation design: for areas with pollution degree III
Residual Voltage Parameters:
- During lightning current impulses with a duration of 8/20 µs:
- at 10 kA — 612.0 kV
- at 20 kA — 672.0 kV
- at 40 kA — 739.0 kV
- During switching currents with a duration of 30/60 µs:
- at 500 A — 481.0 kV
- at 1000 A — 499.0 kV
- at 2000 A — 526.0 kV
- During a steep current impulse of 20 kA with a duration of 1/10 µs: 752.0 kV
Additional Characteristics:
- Charge capacity: 2.8 C
- Capacity class: 5
- Classification voltage at 2 mA current: 281.0 kV
- Thermal energy: at least 10.0 kJ/kV
- Active power loss: at least 4.5 kJ
- Creepage distance: 960 cm