Challenges

High availability

Pumped storage power plants (PSPP) are one of the commercially proven methods available for grid-scale energy storage. Building additional PSPPs particularly in the areas with high installed capacities of wind parks and solar power plants will significantly improve the grid reliability. In order to ensure such reliability, the availability of the power plant must be high.
Solution

Together we deliver the adapted solution to your needs

Paramount equipment synchronizing the generator to the grid, the generator circuit-breaker purpose is also to interrupt short-circuit current.

When installed in pumped storage power plants (PSPP), a GCB must operate numerous times a day to connect & remove the powertrain to/from the network. Unlike other peak power plants, in addition to high number of daily operations, the GCB will have to interrupt high-currents during switch-off phase.

To maximize return-on-investment, increase time between maintenance, minimize outage time and provide the lowest operational expenditure, it´s crucial to select and implement the solution which is the most durable both electrically and mechanically.

The voice of our customers

Benefits

By selecting Siemens vacuum GCB solutions, you will benefit from:

Product information

The most efficient, durable and sustainable modular solution answering your daily challenges:

  • OPEX optimization due to maintenance-free vacuum technology with up to 10,000 CO operating cycles at full nominal rated current
  • Featured full-spring operating mechanism stated to be the most reliable* way to operate a GCB with lifespan up to 20,000 CO operation
  • Equipped with sealed-for-lifetime** vacuum interrupter
  • Complete set of equipment (GCB, PRDS, Back-to-Back, Starting Switch and braking) from single manufacturer ensuring utmost compatibility and reliability (ex: one common local control cabinet for all functions)
  • Compact footprint, reduced space requirements
  • Horizontal and vertical solutions
  • Possibility of disassembled delivery

* Most reliable operating mechanism as per final report number A3-00 from the CIGRE 2012 General Report SC A3.

** R. Renz, D. Gentsch, P. Slade, H. Fink, M. Schlaug, "Vacuum Interrupters – Sealed for Life", 19th Int. Conf. on Electr. Distr. (CIRED), Paper 0156, 21-24 May 2007

 

Technical Data

Rated (up to)
 
 
 
Type of design
 
Non-segregated phase
Isolated Phase
Interrupting technology
 
vacuum
vacuum
Voltage
kV
24
24
Frequency
Hz
50/60
50/60
Rated power-frequency withstand voltage
kV
60
70
Rated lightning impulse withstand voltage
kV
125
145
Rated nominal current
A
6,700
12,700
Short-time withstand current/duration
kA
72/1
110/3
Peak withstand current
kA
200
302
Short-circuit breaking current
kA
72
110
Short-circuit making current
kA
200
302
Electrical lifetime at full nominal current
 
10,000 times
10,000 times
Electrical lifetime at full short-circuit current
 
30 times
30 times
Optional equipment
 
 
Type of design
Non-segregated phase
Isolated Phase
Phase reversal disconnecting switch (PRDS)
X (Integrated)
X (stand-alone)
Starting disconnecting switch
X (Integrated)
X (Integrated or stand-alone)
Back-to-back disconnecting switch
X (Integrated)
X (Integrated or stand-alone)
Electromagnetic breaking switch
X (Integrated)
X (stand-alone)
Electromagnetic breaking circuit breaker
X (Integrated)
X (stand-alone)
Rated (up to)
 
 
 
 
 
Type of design
Non-segregated phase
Isolated Phase
Connection method
Cable
Non-segregated phase busduct
Solid insulated busbar
Isolated Phase Busbar (IPB)
Isolated Phase Busbar (IPB)
Specificities
Internal arc classification up to AC A
FLR 72 kA (0.1s)
Degree of Protection up to IP55
pole-center distance from 1,200 to 1,800 mm

Vertical or horizontal installation

Contact

Get in contact with our Customer Service:

You can contact us 24/7. We are looking forward for your call or online request. Phone +49 180 524 70 00