GREYHAWK SUBSTATION STEEL & ELECTRICAL

Projects
  • Greyhawk Substation:
    3606 South Rockwood Road,
    Cabot, AR 72023

Scope of work consisted of the installation of electrical equipment, supports, bus and other components: 
· (10) 161kV single phase bus supports (high)
· (16) 161kV single phase bus supports (low)
· (7) 161kV low switch supports
· (1) 161kV high switch support
· (3) H-frame dead end structures
· (1) 13.8kV 50KVA station service with safety switch
· (3) 161kV, 2000A vertical-break switches with associated operating mechanisms
· (1) 161kV, 2000A vertical-break switch with ground switch and associated LLS-II attachment
· (1) 161kV, 2000A vertical-break switch with ground switch and HWS attachment
· (1) 161kV transformer dead end structure
· (14) yard lights
· (38) porcelain post insulators for bus supports
· (1) 161kV circuit switcher
· (12) suspension insulator supports on line dead-end structures and transformer dead end structure
· (4) 15kV breakers
· (45) porcelain insulators on 161kV switches
· 2200 ft. of 4” schedule 40 aluminum bus with connectors and fitting
· 320 ft. of 7 #7 alumoweld shield wire with associated connectors and fittings
· Install 954 ACSR damper cable and jumpers with connectors and fittings
· Install 1272 ACSR jumpers with connectors and fittings
· Install 34.5kV equipment, switches, insulators, bus supports and rigid bus
· Install 34.5kV main breaker, tie breaker, and feeder bay structures
· Install all wire/cable as shown on drawing CB1; includes pulling, stripping, megger testing, and installation of Burndy YAEV lugs 
· Install control house relay panels per drawing LO5, including: 
  · (1) stand along AC panel
  · (1) standalone DC panel
  · (1) RTU panel 
  · (1) RTU Peripheral panel
  · (1) MOS panel
  · (1) transformer differential panel.
· Install 120/240V AC Automatic transfer switch in control house
· Install battery charger and battery DC switch in control house
· Install ADSS for Telecom (estimated 600 ft.)
· Provide and install above ground conduits
· Install distribution backup pad equipment 
· Install Transformer Sump Pump and conduit

Initial Mobilization / Est Completion Date

3/1/2020 - 5/31/2020

Contract Amount:

$408.804.00

Job Number:

20-2503

Owner:

Entergy of Arkansas
POC: Justin Hart

General Contractor:

Koontz Electric Co., Inc.
Project Manager:  Joey Dold
Superintendent: Cory Coggins