GSecSF6 load-break switch-disconnector

PPMV – Product Management

GSecThree position switch disconnector

Month DD, Year | Slide 2© ABB Group

Upper terminal

Lower terminalCapacitive dividers intergrated

SF6 line disconnectorInsulate busbar from cablesSF6 earthing switch

Grounds cable side

GSec

Upper part in epoxy resin and filled with SF6:

compact design

long-term protection against external environment

Sealed for life: 30 years

Lower part in stainless steel

Metallic partition (PM) between busbar and cable compartments

Safety for operators during maintenance activities

Lower bushings with integrated capacitive dividers:

Direct cable connection

Compact and safe structure

Month DD, Year | Slide 3© ABB Group

GSec

Line actuators:• Single spring mechanism

(1S – dead centre)• Double spring mechanism

(2S – stored energy)

Earth actuator:• Single spring mechanism

(1S – dead centre)

1. Line operating slot2. Earth operating slot3. Line diagram with indicators4. Pushbuttons (for 2S actuator)5. Voltage indicators6. Spring charged signal7. Fuse blown signal

Actuators

Month DD, Year | Slide 4© ABB Group

GSecActuators diagrams

Month DD, Year | Slide 5© ABB Group

Position of line contact (0 = open, 1 = closed)Spring status (0% = discharged, 100% = charged)Spring charging time- manual operation: depend on operator- automatic operation with motor = 3-4 s.

Tc Opening or closing time of the contact < 0,3 s.Tclose Total closing time < 5 s.Topen Total opening time < 5 s.

Ts1

Position of line contact (0 = open, 1 = closed)Springs status (0% = discharged, 100% = charged)Springs charging time- manual operation: depend on operator- automatic operation with motor = 3-4 s.

Tc Opening or closing time of the contact < 0,3 s.Tclose Total closing time < 0,3 s.Topen Total opening time < 0,3 s.

Ts2

1S – Single Spring 2S – Double Spring

time time

Actuation speed is independent from operator

GSec/T1

1S – Single spring mechanism

GSecTypical units

Month DD, Year | Slide 6© ABB Group

GSec/T2

2S – Double spring mechanism (stored energy)

GSecTypical units

Month DD, Year | Slide 7© ABB Group

GSec/IB

1S – Single spring mechanism

For panels with removable circuit breakers

Downstream earthing switch (interlocked)

GSec/T2F

2S – Double spring mechanism

Fuse tripping system

Fuse base

Fuse blown indicator

Downstream earthing switch (interlocked)

GSec

Line disconnector - Earthing switch

It is possible to close the earthing switch only if the line switch-disconnector is open

Earthing switch – Panel door

It is possible to open the door only if the earthing switch is closed

Mechanical interlocks for safety

Month DD, Year | Slide 8© ABB Group

(1) (2) (3)

Closed Open - Isolated Earth

GSecWide range of accessories

Month DD, Year | Slide 9© ABB Group

Line SwitchDisconnector

- Shunt opening release (T2/T2F)

- Shunt closing release (T2/T2F)

- Pushbutton protection (T2/T2F)

- Fuse blown contact (T2F)

- Motor closing spring charger

- Auxiliary contacts 4NC/4NO

- Key locks

- VPIS

- Manometer or pressure switch

Earthing switch

- Auxiliary contacts 4NC/4NO

- Key locks

GSecSafety and Compactness

Month DD, Year | Slide 10© ABB Group

Safety

- Metallic partition thanks to lower part in stainless steel

- Mechanical interlocks to prevent unsafe operations

- Separate operating seats for line and earth

Compactness

- Can fit 375mm wide panels

- No need for cross-beam with insulators and direct cables connection thanks to integrated capacitive dividers

Three positions load-break switch disconnector:

SF6 Load break switch

SF6 Disconnector

SF6 Earthing switch (cable side)

GSecSF6 three-positions LBS

Month DD, Year | Slide 11© ABB Group

Rated Voltage [kV] 12(1S / 2S)

17.5(1S / 2S)

24(1S / 2S)

Rated Current [A] 630 / 800 630 / 800 630

Short time current [kA] 16(3s) / 25(2s) 16(3s) / 20(3s) 16(3s) / 20(2s)

Mechanical class Line: M1 / M2 – Earth: M0

Electrical class Line: E3 – Earth: E2