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Air Insulated Switchgears (AIS)


Gas Insulated Switchgears (GIS)

                  BGA


Ring Main Units


Distribution Transformers


Busway System


Solar Power System

BGA

Picture

EPE Type BGA Compact Gas Insulated Switchgear

Characteristics

Unit

12kV

24kV

36kV

Configuration

 

Single Busbar / Double Busbar

Rated voltage

kV

12

24

36

Maximum operating voltage

kV

12

24

36

Rated frequency

Hz

50

Rated power frequency withstand voltage, 1 min

kV

28

50

70

Rated lightning impulse withstand voltage, 1.2/50 us

kV

75

125

170

Rated busbar current

A

2000

2000

2000

Rated feeder current

A

630/1250/2000

Rated peak withstand current

kA

63

63

63

Rated short time withstand current, 3 sec

kA

25

Internal arc protection

 

ALFR – 25kA, 1 sec

Insulating medium

 

SF6

Rated pressure (gauge)

MPa

0.08

Low pressure alarm stage – 1

MPa

0.06

Low pressure alarm stage – 2

MPa

0.05

High pressure

MPa

0.12

Leakage rate

% pa

0.1

Degree of protection

 

 

- High voltage live parts

IP

65

- Low voltage compartment

IP

4X

Ambient temperature – maximum value

°C

40

Relative humidity, 24 average / 1 month average

%

95/90

Standard altitude for erection above sea level

m

1000

 

EPE Type DGA 3 Position Isolator

Operation of 3 position isolator

 

Motorised / Manual

Auxiliary voltage

 

 

Control circuit

Vdc

110

Motor circuit (Vac/Vdc)

Vdc

110

 

EPE Type VGA Vacuum Circuit Breaker

Characteristics

Unit

12kV

24kV

36kV

Rated voltage

kV

12

24

36

Maximum operating voltage

kV

12

24

36

Rated frequency

Hz

50

Rated power frequency withstand voltage, 1 min

kV

28

50

70

Rated lightning impulse withstand voltage, 1.2/50 us

kV

75

125

170

Rated short circuit breaking current of circuit breaker

kA

25

Rated short circuit making current of circuit breaker

kA

63

63

63

Rated operating sequence

 

O – 0.3 s – CO – 3 min – CO

Rated closing time

msec

70

70

80

Rated opening time

msec

50

50

50

Rated TRV for terminal fault / FPTC factor

p.u.

1.5

1.5

1.5

Rate of rise

kV/us

0.34

0.47

0.57

TRV peak voltage

kV

20.6

41.2

61.7

Type of operating mechanism

 

Motor charged spring stored energy

Tripping system

 

Shunt trip

Spring charging motor

Vdc

110

Output

W

60

Current

A

2 ~ 3

Closing coil auxiliary voltage

Vdc

110

Current

A

4

Tripping coil auxiliary voltage

Vdc

110

Current

A

5

 

Dimension

 

Unit

Feeder

Incomer

Bus Section

Riser

Bus Coupler

Single Busbar

- Height

mm

2610

na

- Depth

mm

1580

na

- Width (630A, 1250A)

mm

700

700

700

700

na

- Width (2000A)

mm

800

800

800

700

na

- Approx. weight per panel

kg

1300

1450

1200

1000

na

Double Busbar

- Height

mm

2610

- Depth

mm

2405

- Width (630A, 1250A)

mm

700

700

700

700

700

- Width (2000A)

mm

800

800

800

700

800

- Approx. weight per panel

kg

1900

2100

1800

1600

1900

 

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