ORiON 12 kV Withdrawable Switchgear Generator Synchronous Circuit Breaker

SPE Energy Utilising the ORiON switchgear developed a standard compact Generator Synchronous Circuit Breaker.

The panel comes complete with Microprocessor relay providing G59 protection incorporating the following function:

• G59
• Directional power
• Differential
• Reverse power with time delay
• Over/under voltage
• Under current
• Unbalanced current / voltage
• Instantaneous current
• Directional overcurrent
• Timed overcurrent
• Earth fault
• Restricted earth fault
• Rocof vector shaft

Accommodation for

• Busbar voltage transformer
• Circuit side voltage transformer
• Circuit side surge arrestor

Cable Accommodation

• Busbar side
• Cable side

Specification:

• Rated voltage up to 12 kV
• Rated short circuit breaking current 25 kA
• Rated short time current 3 seconds
• Rated peak withstand current 62.5 kAp
• Rated peak making current 62.5 kAp
• Rated normal current 400/630, 800, 1250A

• Rated basic impulse level 75 & 95 kVp
• Rated frequency 50 Hz
• Rated power frequency 28 kV for 1 minute
• Rated arc fault containment 25 kA for 1 sec FLR
• Mechanical endurance class M2 10,000 operations

Applicable Standards:

• IEC 62271 – 100
• IEC 62271 - 200