VB1-D Generator Circuit-Breaker Switchgear

Withdrawable truck-type design, for indoor installation

Description

The VB1-D generator switchgear with vertical busbar and truck-type design provides a high switchgear availability for safe and cost-efficient power generation. 
Installation and maintenance are easy to perform thanks to the uncomplicated technology. The switchgear is suitable for a power range up to 110 MW.

Its compact dimensions make it especially adequate for hydro power plants. The switchgear can be extended, allowing for multi-generator applications.

Technical Data

Rated

voltage

kV

17.5

frequency

Hz

50/60

short-duration power-frequency withstand voltage

kV

50

lightning Impulse withstand voltage

kV

110

short-time withstand current

kA(s)

63(3)

peak withstand current

kA

173

with circuit-breaker natural cooling (50Hz)

A

4300

with circuit-breaker forced cooling (50Hz)

A

5100

Breaker Types

3AH37 IEEE circuit breaker for generator applications

Switchgear Design

IEC

Dimensions

Width:

Circuit breaker panel

mm

1200

Connection panel

mm

1200

Exterior wall

mm

50

Height:

Standard panel with standard LV-connection compartment

mm

2450

Panel with pressure relief channel and arc absorber

mm

2950

Panel with forced ventilation

mm

2950

Depth:

All panel types

mm

2430

Internal arc classification

IAC A FL 63 kA (0.3s)

Connection method

Cable
Solid insulated busbar

Installation

Indoor

Degree of Protection

IP4X


Features and Benefits

  • Factory-assembled, type-tested switchgear according to IEC 62271-200

  • Air-insulated, metal enclosed

  • Internal arc classified switchgear according to IAC A FLR 63 kA for 0,3 s duration

  • Loss of service continuity category: LSC 2B

  • Partition class: (PM)

  • Truck-type design