SE Digest 178

CBGS-0

Medium Voltage Gas-Insulated Switchgear

Class 6047 / Refer to Brochure 6047BR1401

www.se.com/us

CBGS-0 Gas-Insulated Switchgear (UL Listed) Easy innovative and economical up to38kV CBGS-0 Medium Voltage (MV) switchgear is compact and easy to install and operate. Due to the insulating gas as well as the solidly insulated busbar and cable connections the medium voltage circuit is protected from environmental influences reducing the risk of arc flash events. Each section consists of a sealed-for-life SF 6 tank which contains the fixed SF range circuit breaker and disconnect switch. By design there is no gas handling throughout the service life of the equipment from installation until recycling at the end of life of the switchgear. Front accessible and ideal for a variety of applications from transformer substations to primary power distribution in markets ranging from mining and metals renewable installations container substations and heavy industry where space is at a premium. Table 11.45: Ratings Rating Main/Feeder Bus Section BusRiser Disconnecting Switch Auxiliary Services

Listed Metal-Enclosed Interrupter Switchgear

Nominal voltage (kV) Busbar system rated current (A) Outgoing rated current (A) Short-time withstand current (kA)

152738

152738

152738

152738

152738

1200/2000

1200/2000

1200/2000

1200/2000

1200/2000

1200/2000

1200/2000

1200/2000

1200/2000

—

Limited by the fuse

25–31.5

25–31.5

25–31.5

25–31.5

Table 11.46: General Electrical Characteristics Rated Voltage

kVRating

27 60

38 70

Power frequency 60 Hz. (efficient kV) Lightning impulse withstand voltage (kV peak)

Rated Insulation Level

125

150

Busbar system

1200/2000 1200/2000

11 SWITCHBOARDS AND SWITCHGEAR

Rated normal current (A)

Incoming/outgoing

Short circuit breaking current (kA) Short circuit breaking current (kA peak) Short time withstand current (kA/s)

25/31.5

63/80

Max 25/2–31.5/2

Gas pressure at 200 °C (psi)

18.85 IP65

High voltage compartment Low voltage compartment

Standard degrees of protection

IP3X–IP41

Table 11.47: Dimensions and Weights Modular Functional Unit (s) Continuous Current Rating (A)

Dimensions Inches (mm)

Weight lbs. (kg)

Depth

Height

Width

Main/feeder bus section Bus riser disconnecting switch

23.5 (598) 47.2 (1198) 23.5 (598) 47.2 (1198) 23.5 (598)

1598 (725) 2249 (1020) 1058 (480) 2052 (930)

1200 2000 1200 2000

CBGS-0 Circuit Breaker

55.1 (1400)

92.5 (2350)

VT auxiliary section

926 (420)

Not applicable

11-29

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11/20/2019