Saudi Arabia, Wadi Al-Dawasir

Control and power solutions

Description

• On normal operation of power system, both 13.8kV SWGR incoming supplies (QMCB 1& QMCB 2 are closed) will supply the power. Bustie breaker (QBTB) is normally opened.
• If either 13.8 kV SWGR incoming supply is failed (QMCB 1 or QMCB 2 is opened), bus tie breaker (QBTB) will be closed by PSWG control panel after failed incoming breaker is opened.
• If both 13.8 kV SWGR Mains 1 & 2 supplies are failed, PSWG will do as the following procedure:
  - Both 13.8 kV incoming CB (QMCB 1 & QMCB2) is opened
  - Bus tie CB (QBTB) will be opened on dead bus condition
  - The circuit breaker of fast generator will be closed
  - The generator CB (QMCB 1 or QMCB 2) of faster generator will be firstly closed on dead bus condition.
  - The next generator will be synchronized and the bus tie will be closed. The faster of either two will be closed. The second will be synchronized and close. PSWG panel will check the time delay to start both generators, and check load demand.
• If both 13.8 kV SWGR Mains 1 or 2 supplies are healthy, PSWG will do as the following procedure:
  - Open both CB QGCB 1 and QGCB 2
  - Close bus tie CB QBTB
  - Close incoming CB QMCB 1 or CB QMCB 2
  - Generators stop after cooling time delay

Scope of supply

• 2 x InteliSys NT (MINT)
• 2 x IG-AVRi
• 2 x IG-AVRi-TRANS/LV
• 2 x IS-BIN16/8
• 2 x I-CB/CAT DIESEL
• 1 x I-LB+
• 2 x InteliMains NT
• 1x InteliMains NT BTB

Genset Type                                                                                                                                                                                                                                                                                                          Caterpillar EMCP 3 , AVR: DVR6