HIGS Generator Switchgear up to 72 kA

HIGS Generator switchgear HIGS GBS HIGS GCB Generator switchgear up to 72 kA Generator switchgear for power plant up to 70 MW HIGS Generatorschaltanlage Generatorschaltanlage bis zu 72 kA Generatorschaltanlage für Kraftwerke bis 70 MW

Directly installed on generator terminals

Rated nominal current up to

10 A
  • All-in-one solution integrating the generator neutral and main terminal boxes, protection system of the auxiliary transformer and generator circuit-breaker

  • Minimizing interface, space and erection requirements

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Product information

HIGS helps you reducing interfaces and space requirement while increasing your protection level

With its direct connection and installation onto the generator, the HIGS decreases the number of interfaces and saves valuable space with integration into a single system of the generator neutral and line accessory compartment, the protection system of the auxiliary transformer and the generator circuit-breaker. The highly integrated generator switchgear (HIGS) is rated for application up to 5.000 A continuous current and short-circuit ratings up to 72 kA, specifically for Siemens industrial turbines SGT-600 to SGT-800 as well as for steam turbines SST-400 to SST-600. It can also be adapted for other gas and steam turbines. With its air-insulated, metal-enclosed and non-phase segregated design, this generator switchgear integrates vacuum generator circuit-breaker (tested as per IEC/IEEE 62271-37-013) and optionally: line disconnecting switch, earth disconnecting switch on generator side and/ or transformer side, instrument transformers, surge arresters, protection of auxiliary transformer and neutral point treatment.

The most exhaustive and compact solution to protect your power unit:

  • Directly installed at generator terminals
  • Matches dimensions of replaced conventional generator terminal boxes
  • Reduces the number of interfaces and saves space
  • Suitable for indoor and outdoor installation
  • Integrated auxiliary feeder
  • Maintenance-free

Technical data

Ratings
 
HIGS 3200
HIGS 3400
HIGS 3750
Rated voltage (Ur)
kV
12
17.5
17.5
Rated frequency (fr)
Hz
50
50/60
50/60
Rated normal current (Ir) @ IP54
A
3200
3400
3750
Rated normal current (Ir) @ IP42
A
3700
4000
4000
Rated normal current (Ir) @ IP42 forced ventilation
A
 
4500
4800
Rated power-frequency withstand voltage (Ud) - common value
kV
28
38
38 @ 50 Hz
50 @ 60 Hz
Rated lightning impulse withstand voltage (Up) - common value
kV
75
95
 95 @ 50 Hz
110 @ 60 Hz
Rated short-time withstand current (Ik) / rated duration of short-circuit (tk) of main circuit
kA (s)
50 (3)
50 (3)
63 (3)
Rated short-time withstand current (Ik) / rated duration of short-circuit (tk) of auxiliary circuit
kA (s)
63 (1)
63 (1)
72 (1)
 
 
Switchgear Design
IEC
Dimensions
4.340 x 1.200 x 2.500 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

Degree of Protection
IP42, IP54
References

Our solutions tailored to customer requirements

We are systematically further developing our extensive portfolio of high-current and generator switchgear in the range up to 400 MW in order to meet your application needs and ever new market requirements at all times. Explore some of our success stories.

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