HIGS Generator Circuit-Breaker Switchgear

For indoor and outdoor installation

Description

The highly integrated generator switchgear (HIGS) is a special developed generator breaker switchgear for Siemens industrial turbines SGT600 to SGT800 in the power range from 25 to 65 MW.
The switchgear will be directly connected with the generator and combines the conventional generator terminal box with an integrated generator switchgear. This enables the reduction of interfaces and required space.

Technical Data

Ratings

HIGS2400

HIGS3200

Rated voltage Ur

kV

12/15

12

Rated frequency

Hz

50
60

50

Rated normal current Ir @ IP54

A

2400

3200

Rated normal current Ir @ IP42

A

2650

3700

Rated lightning impulse withstand voltage
50 Hz
60 Hz

kV


75
95


75
-

Rated lightning impulse withstand voltage across the isolating distance Ud
50 Hz
60 Hz

kV


28
38


28
-

Rated duration of short circuit tk

s

3

3

Rated short circuit breaking current Isc

kA

50

50

Breaker Types

3AH3817-7 (17.5kV - 3,150A - 50kA) / 3AH3817-8 (17.5kV - 4,000A - 50kA)

Switchgear Design

IEC

Dimensions

4340 x 1200 x 2500 mm ( W x D x  H )

Connection method

Directly installed at the generator terminals

Connection to generator step up transformer with cables or busbars from top or bottom

Installation

Indoor or outdoor

Degree of Protection

IP42, IP54


Features and Benefits

  • Replaces conventional generator connection box

  • Indoor and outdoor installation

  • Integrated neutral point treatment

  • Integrated aux transformer feeder, optionally