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Valve arrester RVO-10 U1 for protection of overhead power transmission lines and equipment of transformer substations from short-term overvoltages of switching or inductive-lightning character. Equipment of this type finds application in electricity transmission and distribution networks in industrial and municipal facilities.
The main elements are non-linear resistors connected in series with spark gaps. They are reliably protected from the negative effects of the environment by a sealed porcelain case, which provides the necessary stability of the product characteristics.
 |
1. Spark gaps
2. Nonlinear resistors 3. Sealed porcelain body |
| Parameter name |
Meaning
|
|---|---|
| Mains voltage class, kV effective | 10 |
| Rated voltage, kV effective | 12.7 |
Breakdown voltage at a frequency of 50 Hz in a dry state and in the rain, kV effective:
|
26 30.5 |
| Pulse breakdown voltage at pre-discharge time from 2 to 20 μs, kV – no more |
48 |
Remaining voltage at a wave of pulsed current 8/20 μs, kV, no more
|
43 45 |
| Rectified test voltage when measuring leakage current, kV | 10 |
| Leakage current, µA | 6 |
| Current carrying capacity: – 20 current impulses with a wave of 16/40 µs, kA – 20 current impulses with a square wave with a duration of 2000 µs, A |
5.0 75 |
| The length of the creepage distance of the outer insulation, cm, – not less than | 26 |
| Permissible tension of wires, N, – not less than | 300 |
| Height, (H), mm, – no more | 411 |
| Weight, kg – no more | 4.0 |
Manufacturer of power transmission and distribution equipments.
We will contact you within 1 working day, please pay attention to the email with the suffix “@wolunele.com”.
