Siemens
СРЕДСТВА ПРОМЫШЛЕННОЙ АВТОМАТИЗАЦИИ
официальный партнер Сименс
Каталог СА01 2016
архивный
(4872) 700-366
skenergo@mail.ru

Cable cross-sections and connections

The following tables list the recommended and maximum connectable line and motor-side cable cross sections and connections for a single connection.

The recommended cross-sections are based on the specified fuses. They are valid for a three-conductor copper cable routed horizontally in air with PVC insulation and a permissible conductor temperature of 70 °C (e.g. Protodur NYY or NYCWY) at an ambient temperature of 40 °C and individual routing.
For deviating conditions (cable routing, cable accumulation, ambient temperature), the appropriate correction factors according to IEC 60364-5-52 must be taken into account.

For additional information, please refer to the SINAMICS Low Voltage Engineering Manual.

Type rating
at 400 V or 690 V

SINAMICS S150 Converter Cabinet Unit

Line supply connection

Motor connection

Cabinet grounding

 

 

Recommended cross-section 1)

Max. cable cross-section

Fixing screw M12

Recommended cross-section 1)

Max. cable cross-section

Fixing screw M12

Fixing screw M12

Remarks

 

 

IEC

IEC

(Number of holes)

IEC

IEC

(Number of holes)

(Number of holes)

 

kW

6SL3710-...

mm2

mm2

 

mm2

mm2

   

380 ... 480 V 3 AC

110

7LE32-1AA3

2 ? 70

4 ? 240

(2)

2 ? 50

2 ? 150

(2)

(2)

 

132

7LE32-6AA3

2 ? 95

4 ? 240

(2)

2 ? 70

2 ? 150

(2)

(2)

 

160

7LE33-1AA3

2 ? 120

4 ? 240

(2)

2 ? 95

2 ? 150

(2)

(2)

 

200

7LE33-8AA3

2 ? 120

4 ? 240

(2)

2 ? 95

2 ? 150

(2)

(2)

 

250

7LE35-0AA3

2 ? 185

4 ? 240

(2)

2 ? 150

2 ? 240

(2)

(2)

 

315

7LE36-1AA3

2 ? 240

4 ? 240

(2)

2 ? 185

4 ? 240

(2)

(2)

 

400

7LE37-5AA3

3 ? 185

4 ? 240

(2)

2 ? 240

4 ? 240

(2)

(10)

Cu bar

450

7LE38-4AA3

4 ? 150

8 ? 240

(4)

3 ? 185

4 ? 240

(2)

(16)

Cu bar

560

7LE41-0AA3

4 ? 185

8 ? 240

(4)

4 ? 185

6 ? 240

(3)

(18)

Cu bar

710

7LE41-2AA3

4 ? 240

8 ? 240

(4)

4 ? 240

6 ? 240

(3)

(18)

Cu bar

800

7LE41-4AA3

6 ? 185

8 ? 240

(4)

6 ? 185

6 ? 240

(3)

(18)

Cu bar

500 ... 690 V 3 AC

75

7LG28?5AA3

50

4 ? 240

(2)

35

2 ? 70

(2)

(2)

 

90

7LG31-0AA3

50

4 ? 240

(2)

50

2 ? 150

(2)

(2)

 

110

7LG31-2AA3

70

4 ? 240

(2)

70

2 ? 150

(2)

(2)

 

132

7LG31-5AA3

95

4 ? 240

(2)

70

2 ? 150

(2)

(2)

 

160

7LG31-8AA3

120

4 ? 240

(2)

95

2 ? 150

(2)

(2)

 

200

7LG32-2AA3

2 ? 70

4 ? 240

(2)

120

2 ? 150

(2)

(2)

 

250

7LG32-6AA3

2 ? 95

4 ? 240

(2)

2 ? 70

2 ? 185

(2)

(2)

 

315

7LG33-3AA3

2 ? 120

4 ? 240

(2)

2 ? 95

2 ? 240

(2)

(2)

 

400

7LG34-1AA3

2 ? 185

4 ? 240

(2)

2 ? 120

4 ? 240

(2)

(2)

 

450

7LG34-7AA3

2 ? 185

4 ? 240

(2)

2 ? 150

4 ? 240

(2)

(2)

 

560

7LG35-8AA3

2 ? 240

4 ? 240

(2)

2 ? 185

4 ? 240

(2)

(2)

 

710

7LG37-4AA3

3 ? 185

8 ? 240

(4)

3 ? 150

6 ? 240

(3)

(18)

Cu bar

800

7LG38-1AA3

4 ? 150

8 ? 240

(4)

3 ? 185

6 ? 240

(3)

(18)

Cu bar

900

7LG38-8AA3

4 ? 150

8 ? 240

(4)

4 ? 150

6 ? 240

(3)

(18)

Cu bar

1000

7LG41-0AA3

4 ? 185

8 ? 240

(4)

4 ? 185

6 ? 240

(3)

(18)

Cu bar

1200

7LG41-3AA3

4 ? 240

8 ? 240

(4)

4 ? 240

6 ? 240

(3)

(18)

Cu bar



1) The recommendations for the North American market in AWG or MCM must be taken from the corresponding standards NEC (National Electrical Code) or CEC (Canadian Electrical Code).

Cable cross-sections required for connecting to the line supply and to motors

It is generally recommended to use shielded 3-conductor three-phase cables between the converter and motor – and for higher power ratings, symmetrical cables where possible. If required, several of these cables can be connected in parallel. There are two main reasons for this:

  • Only then can the high IP55 degree of protection at the motor terminal box be easily achieved. The reason for this is that cables are routed into the terminal box through glands, and the number of possible glands is restricted by the terminal box geometry. Individual cables are less suitable in achieving this.
  • For symmetrical 3-conductor three-phase cables, the summed ampere turns over the outer cable diameter are zero. This means that they can be routed in metallic, conductive cable ducts or cable trays without any problems and without any noticeable currents being induced in the conductive connections (ground and leakage currents). The risk of induced leakage currents and therefore increased cable sheath losses is significantly higher for single-conductor cables.

The cable cross-section required depends on the current being conducted in the cable. The permissible current load capability of cables is defined, for example in IEC 60364-5-52. On one hand this is dependent on the ambient conditions, such as temperature, and on the other hand, the type of routing. It must be taken into account whether cables are individually routed with relatively good cooling, or whether several cables are routed together; in this case, cable ventilation is significantly poorer, which can therefore result in higher cable temperatures. Regarding this topic, reference is made to the corresponding correction factors for these secondary conditions in IEC 60364-5-52.

For 3-conductor copper and aluminum cables with PVC insulation and a permissible conductor temperature of 70 °C (e.g. Protodur NYY or NYCWY), as well as an ambient temperature of 40 °C, the cross-sections can be determined from the information provided in the following table, which is based on IEC 60364-5-52.

Cross-section of 3-conductor cable

Copper cable

Aluminum cable

 

Individual routing

Several cables lying next to one another 1)

Individual routing

Several cables lying next to one another 1)

mm2

A

A

A

A

3 ? 2.5

22

17

17

13

3 ? 4.0

30

23

23

18

3 ? 6.0

37

29

29

22

3 ? 10

52

41

40

31

3 ? 16

70

54

53

41

3 ? 25

88

69

68

53

3 ? 35

110

86

84

65

3 ? 50

133

104

102

79

3 ? 70

171

133

131

102

3 ? 95

207

162

159

124

3 ? 120

240

187

184

144

3 ? 150

278

216

213

166

3 ? 185

317

247

244

190

3 ? 240

374

292

287

224



Current-carrying capacity according to IEC 60364-5-52 at 40 °C

1) A maximum of 9 cables may be routed directly next to one another horizontally on a cable tray.

Cables must be connected in parallel for higher currents.

Note: The recommendations for the North American market in AWG or MCM must be taken from the corresponding standards NEC (National Electrical Code) or CEC (Canadian Electrical Code).

Grounding and protective conductor cross-section

The protective conductor must be dimensioned taking into account the following data:

  • In the case of a ground fault, it is not permissible that inadmissibly high contact voltages occur as a result of voltage drops along the protective conductor caused by the ground fault current (< 50 V AC or < 120 V DC, IEC 61800-5-1, IEC 60364, IEC 60543).
  • The protective conductor must not be excessively loaded by any ground fault current it carries.
  • If it is possible for continuous currents to flow through the protective conductor when a fault occurs, then the protective conductor cross-section must be dimensioned for this continuous current.
  • The protective conductor cross-section must be selected according to EN 60204-1, EN 60439-1, IEC 60364.

Cross-section, line conductor

Minimum cross-section, external protective conductor

mm2

mm2

up to 16

Minimum cross-section of external conductor

16 ... 35

16

from 35

At least half the cross-section of external conductor



Note: The recommendations for the North American market in AWG or MCM must be taken from the corresponding standards NEC (National Electrical Code) or CEC (Canadian Electrical Code).

  • Switchgear and motors are usually grounded separately via a local ground electrode. With this constellation, the ground fault current flows via the parallel ground connections and is divided. In spite of the relatively low protective conductor crosssections used in accordance with the table above, no inadmissible touch voltages occur with this grounding system.
    However, from experience gained with different grounding constellations, we recommend that the ground cable from the motor returns directly to the drive converter. For EMC reasons and in order to avoid bearing currents, for large power ratings, it is preferable to use symmetrical 3-conductor, three-phase cables instead of four-conductor cables. For 3-conductor cables, the protective or PE conductor must be routed separately or arranged symmetrically in the motor cable. The symmetry of the PE conductor is achieved using a conductor surrounding all phase conductors or using a cable with a symmetrical arrangement of the three phase conductors and three ground conductors.
    For additional information, please refer to the SINAMICS Low Voltage Engineering Manual.
  • Through their high-speed control, the converters limit the load current (motor and ground fault currents) to an rms value corresponding to the rated current. As a result of this fact, we recommend that the cross-section of the protective conductor to ground the cabinets is the same as for the outer (main) conductor.

















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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
Каталог оборудования 2016
Каталог продуктов Siemens Industry Приводная техника Преобразователи Стандартные преобразователи Общая информация о базовых преобразователях SINAMICS V Преобразователи частоты общего назначения SINAMICS G Высокопроизводительные преобразователи SINAMICS S Сервопреобразователь SINAMICS S110 SINAMICS S120 SINAMICS S120M distributed servo drive SINAMICS S120 Combi SINAMICS S120 Chassis Format Units SINAMICS S120 Cabinet Modules SINAMICS S150 Converter Cabinet Units Description of the options Line-side components -Recommended fuses Cable cross-sections and connections Supplementary system components MICROMASTER SIPLUS POSMO A SIMODRIVE POSMO LOHER DYNAVERT Drive System Преобразователи на среднее напряжение Преобразователи постоянного тока Двигатели переменного тока Мотор-редукторы Flender Gear Units Couplings Инструментальное программное обеспечение Дополнительные компоненты Техника автоматизации Автоматизация и безопасность зданий Низковольтная коммутационная техника Технология безопасности Системные решения и продукты для отраслей Сервис ... и все, что Вам еще необходимо




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