Siemens
СРЕДСТВА ПРОМЫШЛЕННОЙ АВТОМАТИЗАЦИИ
официальный партнер Сименс
Каталог СА01 2018
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Surge arrester selection according to IEC 60099-4

The table below shows an overview of the typical minimum rated voltage Ur for the surge arrester, depending on the highest voltage Us and grounding of the system according to IEC 60099-4.

Highest voltage of system

Solidly earthed neutral system

Isolated neutral system or delta winding

Impedance earthed neutral system

Resonant earthed neutral system

Us [kV]

Ur [kV]

Ur [kV]

Ur [kV]

Ur [kV]

3.6

3

6

3

6

7.2

6

9

9

9

12

9

15

12

15

17.5

15

24

15

24

24

18

30

21

30

36

27

45

33

45

52

39

661)

45

661)

72.5

54

961)

661)

961)



1) High-voltage surge arrester

Surge arrester selection according to IEEE C62.11

The table below shows an overview of the typical minimum duty cycle voltage Ur for the surge arrester, depending on the highest line to line voltage Us and grounding of the system according to IEEE C62.11.

System L-L voltage

Four-wire multi-grounded neutral wye

Three-wire low impedance neutral circuit

Three-wire high impedance neutral circuit

Us [kV]

Ur [kV]

Ur [kV]

Ur [kV]

4.16

3

6

6

6.9

-

-

9

8.3

6

9

-

12

9

12

-

12.47

9 or 10

15

-

13.8

10 or 12

15

18

22.86

15

21

-

23

-

-

30

34.5

27

36

-



















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Арматура DENDOR

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Датчики и измерители

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Регуляторы и регистраторы

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Пневматическое оборудование

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Краны и Клапаны

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Измерительные приборы

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Системы беспроводного управления «умный дом»

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Бесконтактные выключатели Конечные выключатели Оптические датчики Энкодеры

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SKW-FS - Установка умягчения

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SKW-FK - Установка обезжелезивания

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