VB1-D Generator Circuit-Breaker Switchgear

For indoor installation

Description

The VB1-D generator switchgear with truck-type design stands for highly plant availability.
Installation and maintenance are easy feasible because of the uncomplicated technology. The switchgear is suitable for a power range up to 110 MW.
Due to the compact dimensions the switchgear is well switch for Hydro Power Plants. The switchgear is extendable, which can be used for multigenerator 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