HB1 Generator Circuit-Breaker Switchgear

For indoor and outdoor installation

Description

The HB1 generator switchgear with horizontal busbar is well suited for power plants up to 120 or 170 MW depending on type of power plant and rated voltage. The HB1 is the Siemens solution especially designed for the requirements of industrial power plants, solar power plants as well as gas, steam and combined power plants. The compact solution can be adapted to the individual needs of a power plant and is available for indoor and outdoor installations.

Technical Data

Rated

voltage

kV

12

17.5

24

frequency

Hz

50/60

50/60

50/60

short-duration power-frequency withstand voltage

kV

28

38

60

lightning Impulse withstand voltage

kV

75

95

125

short-time withstand current

kA/s

50/3
63/1
72/1

50/3
63/1
72/1

50/3
63/1
72/1

peak withstand current

kA

125/1301)
160/1641)
180/1881)
2002)

125/1301)
160/1641)
180/1881)
2002)

125/1301)  
160/1641)
180/1881)
2002)

normal current of feeders:
Generator / Transformer feeder     3150A VGCB
Generator / Transformer feeder     4000A VGCB
Generator / Transformer feeder     5000A VGCB
Generator / Transformer feeder     6300A VGCB

Auxiliary transformer feeder
for transformers ≤ 1250 kVA with FLBS 5)

Auxiliary transformer feeder       
for transformers > 1250 kVA with 1250A VCB or 3150A VGCB

Auxiliary transformer feeder with disconnector

Auxiliary transformer feeder without switching devices

Auxiliary transformer feeder with fuse link


A
A
A
A

IP4X3)
2900
4200
5200
6700

<125


<1250



<1250

<1250


<200

IP544)
2300
3300
3700
4700

IP4X3)
2900
4200
5200
6700

<125


<1250



<1250

<1250


<200

IP544)
2300
3300
3700
4700

IP4X3)
2900
4200
5200
6700

<125


<1250



<1250

<1250


<200

IP544)
2300
3300
3700
4700

1)     Values for 60 Hz          4) Also with IP55 for outdoor use
2)    Values on request         5) Fused load break switch 
3)   Also with IP41, IP42

Breaker Types

3AH38/37

Switchgear Design

IEC

Dimensions

4,000 x 1,800 x 2,500mm ( W x D x  H )

Internal arc classification

AC A FLR 63kA (1s) / 72kA (0.1s)

Connection method

Cable
Bus duct
Solid insulated busbar
Isolated Phase Busbar ( IPB )

Installation

Indoor or Outdoor application

Degree of Protection

IP4X, IP41, IP42, IP54, IP55


Features and Benefits

  • Direction of connection: lateral side, top or bottom

  • Indoor installation, outdoor optionally

  • Arc fault proof

  • High operational safety

  • Maintenance free