Vacuum interrupter/ operator

Figure 22: Typical elementary diagram

(+)

 

 

 

 

 

 

 

 

01

 

 

 

01

 

 

 

T

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

SD16

SD13

 

 

 

 

 

 

W

21

LS21

 

 

 

G

R

 

 

22

41

 

 

 

 

 

 

 

52b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

42

 

 

 

 

 

 

 

 

 

 

 

 

SD3

 

 

22

21

14

SD4

SD1

 

 

Motor

 

 

 

 

 

88

 

52Y

LS3

52Y

 

 

13

 

 

21

22

13

31

24

 

 

 

 

 

 

 

LS41

 

 

31

 

 

52b

52a

DC supply

14

21

 

32

52Y

 

32

23

 

 

 

 

 

 

 

 

 

LS22

 

 

 

 

 

 

 

22

A1

 

A1

 

A1

 

 

 

 

 

 

 

 

 

52SRC

 

52Y

52T

 

 

 

 

 

 

 

 

22

22

A2

 

A2

SD14

A2

 

 

 

 

 

 

34

 

 

 

MI1 MI2

13

 

 

 

 

 

21

 

 

 

52a

 

 

21

 

LS9

 

 

33

 

 

TB

 

14

 

 

 

 

 

 

 

 

SD2

 

 

1

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

SD15

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(-)

SD11

 

 

SD9

 

 

SD7

 

 

SD5

 

 

54

64

52a

91

101

 

74

84

 

111

121

 

 

52a

 

52b

52b

 

52a

52a

 

52b

52b

55

63

 

92

102

 

73

83

 

112

122

 

SD12

 

 

SD10

 

 

SD8

 

 

SD6

 

 

88.0- Spring-charging motor

52a - Auxiliary switch is open when circuit breaker is open

52b - Auxiliary switch is closed when circuit breaker is closed

52SRC - Spring-release coil (close)

52T - Shunt trip coil

52Y - Closing relay (anti-pump)

G- Green indicating light (trip)

LS

- Spring-charged switch

MI1, MI2 - Mechanical interlock

OI/C

- Control switch (close)

OI/T

- Control switch (trip)

R- Red indicating light (closed)

W- White indicating light (spring- charged).

Standard:

Fuses in close circuit. Slugs in trip circuit (fuses optional).

Shown with springs DISCHARGED, trip-latch reset, circuit breaker OPEN, CONNECT or WITHDRAWN position.

29

Page 29
Image 29
Siemens 38-3AH3 38 kV instruction manual Standard

38-3AH3 38 kV specifications

The Siemens 38-3AH3 is a high-voltage circuit breaker designed for medium voltage applications, particularly in substations and industrial environments. This device operates at a voltage level of 38 kV, showcasing Siemens' commitment to innovation and reliability in electrical engineering.

One of the main features of the Siemens 38-3AH3 is its advanced interruption technology, which employs the proven hybrid design combining both gas-insulated and air-insulated technologies. This hybrid approach not only enhances the breaker's performance and reliability but also minimizes its footprint, making it an ideal choice for space-constrained environments.

The Siemens 38-3AH3 uses vacuum interruption technology, allowing for efficient switching with minimal wear and tear. The vacuum interrupters are highly reliable and provide excellent performance under various operating conditions. This technology ensures that the circuit breaker can handle short circuits and overloads effectively, thus protecting the entire electrical system.

Additionally, the Siemens 38-3AH3 incorporates intelligent monitoring systems. These digital technologies provide real-time data on breaker status, operational performance, and maintenance needs. This predictive maintenance capability helps operators to identify potential issues before they develop into significant problems, ultimately leading to reduced downtime and maintenance costs.

Another notable characteristic of the Siemens 38-3AH3 is its high insulation strength. Thanks to its robust design and development, this circuit breaker can withstand adverse environmental conditions, making it suitable for use in diverse geographical locations and climates. Its components are designed to resist contamination and corrosion, ensuring long-term reliability.

The Siemens 38-3AH3 also offers enhanced safety features. It includes protective relays and automatic fault detection systems that isolate faults quickly, preventing damage to downstream equipment. Furthermore, the design allows for easy maintenance, with components that are accessible without the need for extensive disassembly.

In summary, the Siemens 38-3AH3 38 kV circuit breaker is a leading solution in high-voltage protection and control, characterized by its advanced interruption technology, integrated monitoring systems, high insulation strength, and user-friendly maintenance features. Its innovative design and engineering make it a trusted choice for utilities and industrial facilities aiming to enhance the reliability and safety of their electrical systems.