This presentation talks about Switch-gears basics: Definition of Switch-Gears. SWG Elements. Main Makers. Different Types that mad by Siemens. IEC's related to SWG. SF6 gas and its characteristics.

1. Electrical Switchgears(SWG’s)
MV,HV

2. Content
What is Switch Gear
Switchgears Elements
SWG Makers
Siemens MV SWG
IEC’s Related to SWG
SF6 gas

3. What is Switch Gear ?

4. Combination of electrical disconnect switches, fuses
or circuit breakers used to control, protect and
isolate electrical equipment
Disconnect Switches
Fuses
Circuit Breaker

5. Switchgear Types
Gas Insulated
.
Air Insulated
.

6. Components
Circuit
Breakers
Disconnecters
FMES: Fast
Making Earth
Switches.
MES:
Maintenance
Earth Switches
Cable Boxes CT’s
VT’s Bus Bars

7. Cross Section

8. What is SLD??
• One-line diagram or single-line diagram (SLD).
• Simplified notation for representing a three-phase power system.
• Its application mainly in power flow studies.
• Electrical elements such as circuit breakers, transformers, capacitors, bus
bars, and conductors are shown by standardized schematic symbols.
• It is a form of block diagram graphically depicting the paths for power
flow between entities of the system.
• Elements on the diagram do not represent the physical size or location of
the electrical equipment, but it is a common convention to organize the
diagram with the same left-to-right, top-to-bottom sequence as the
switchgear or other apparatus represented.

9. SLD: Single Line Diagram, 132kV
CB
DC,
MES
VT
Cable
Box
CT
FMES

10. How we can categorize CBs

11. CB’s
Categorization
Insulating/Arc
Quenching
medium.
Mechanism
Type
No. of
phases in
one
chamber
Horizontal/Vertic
al Arrangement
No. & Type of
Interrupters
Voltage Level

12. Insulating/Arc Quenching medium
SF6 Gas Vacuum Oil
Air

13. Mechanism Types
Spring Hydraulic Pneumatic/Air
Pneumatic/Gas

14. Spring Mech.

15. Spring Mech

16. Hydraulic Mech
ReyRoll, SPD2 Hydraulic Mech, Jordan Aqaba 400kV SS

19. Pneumatic/Gas Mech
Marlin Gerin, DHB7, UAE, Sharja 132kV

20. CB’s
Categorization
# of phases
in one
chamber
Mechanism
Type
Insulating/Arc
Quenching
medium.No
Horizontal/Vertic
al Arrangement
No. & Type of
Interrupters
Voltage Level

21. Three Phase encapsulated
Berlin, Siemens Factory, Training Centre, 8DN8 SWG

22. Three Single Phase encapsulated
Berlin, Siemens Factory, Training Centre, 8DN9 SWG

23. CB’s
Categorization
Horizontal
Vertical
Arrang
Mechanism
Type
No. of
phases in
one
chamber
Insulating/Arc
Quenching
medium.
No. & Type of
Interrupters
Voltage Level

24. Horizontal CB
Berlin, Siemens Factory, Training Centre, 8DN9 SWG

25. Vertical CB
Siemens, 8DN8, UAE, Dubai, 132kV

26. CB’s
Categorization
No. & Type of
Interrupters
Mechanism
Type
No. of phases
in one
chamber
Horizontal/Vertic
al Arrangement
Insulating/Arc
Quenching
medium.
Voltage Level

27. Single Interrupter
Berlin, Siemens Factory, Training Centre, 8DN8, 8DN9 SWG

28. Double Interrupter/Vertical
UK-Newcastle, Siemens/ReyRoll Factory, SPD2 Workshop

30. Double Interrupter/Horizontal
Siemens, 8DP4, UAE, Alain, 220kV

32. 4 Interrupters

33. Type of Interrupters: Jet Nozzle

35. Type of Interrupters: Buffer

36. Voltage Level
Medium Voltage MV, 11kV, 33kV.
High Voltage HV, 132kV, 220kV.
Extra High Voltage EHV, 400kV, 500kV.

37. Main Aspects of CB’s
•Operating Cycle.
•Speed/Timing.
•Short Circuit Breaking Current.
•Rated Normal Current.
•Phase to phase insulating voltage.

38. CB Name Plate
Siemens Make, UAE, Dubai, 8DN8,SWG

39. Technical Data

40. CB Timing Test Kit

41. Snapshot of one Report for timing test

45. Siemens SWG Types
•HV, EHV: 8D4, 8D5, 8DN68DN8, 8DN9, 8DP3, 8DQ
•MV: 8DA10, 8DB10, NXPlus C, NXAir, 8DH, 8DJ,
Simosec

46. 11kV and 33kV 8DA10 SWG

47. 11kV and 33kV 8DA10 SWG
Frankfurt, Siemens Factory, Showing Room, 8DA10 SWG

48. 11kV and 33kV 8DA10 SWG
Siemens Make, Abu Dhabi, 8DA10 SWG

49. 11kV and 33kV 8DA10 SWG
Siemens Make, UAE, Dubai, 8DA10 SWG

50. Vacuum Bottle

51. Vacuum Bottle
Germany, Nuremberg, Siemens MV workshop

52. Vacuum Bottle
Siemens Make, Abu Dhabi, MV Vacuum Bottle

53. • IEC 62271-100: High-voltage alternating-current circuit-breakers.
• IEC 62271-102: Alternating current disconnectors and earthing
switches.
• IEC 62271-200: AC metal-enclosed switchgear and control gear for
rated voltages above 1kV and up to and including 52kV.
• IEC 62271-203: Gas Insulated metal-enclosed switchgear for voltages
above 52kV.
• IEC 60694 Common specifications for high-voltage switchgear and
control gear standards.

54. SF6 Gas: Sulphur HexaFluoride
Normal Gas:
• Colourless, Odourless, Heavier than air.
• SF6 is an inert, non-flammable, non-toxic, not corrosive.
Used for:
• Insulation and arc quenching.
• Flashed over gas (Breakdown):
• Odour (rotten eggs), skin and eye irritation
• non ozone-depleting insulating gas with a high global warming
potential.

56. SF6 Cylinders

57. SF6 Measuring Device

58. Flashed over cable box

59. Flashed over Conductor, 400kV

61. Thank You…