ASCO 300G 150 AMP 3 POLE 277/480 VOLT, NEMA 3R ENCLOSURE (LEAD TIME 8 WEEKS)

CONTROL AND DISPLAY PANEL
 

Easy to navigate 128x64 graphical LCD display with keypad provides LED indicators for switch position, source availability, not in auto, and alert condition.
 

STANDARD FEATURES
 

• Inphase monitor to transfer motor loads, without any intentional off time, to prevent inrush currents from exceeding normal starting levels.
• Engine exerciser to automatically test backup generator each week—with or without load for 20 minutes.
• Selective load disconnect control contacts (two provided) which operate with time delay prior to and/or after load transfer and re-transfer.
• 60Hz or 50Hz selectable switch. Three – phase/single - phase selectable switch.
  
  VOLTAGE & FREQUENCY SENSING
   
• Three phase under and over voltage settings on normal and  emergency sources.
• Under and over frequency settings on normal and emergency sources.
• True RMS Voltage Sensing with +/-1% accuracy Frequency Sensing Accuracy is +/- 0.1Hz
• Voltage and Frequency parameters adjustable in 1% increments
• Selecting settings : single or three phase voltage sensing on normal, and single phase sensing on emergency; 50 or 60 Hz
   

COMMUNICATIONS FEATURES
 

Requires accessory 72EE
 

• Built in web server, with full display and control capabilities
• E-mail capability for system events, including e-mail to SMS text messaging.
   

REMOTE CONTROL FEATURES
 

• External Inputs for connecting:
• Remote test switch.
• Remote contact for test or for peak shaving applications. If emergency source fails, switch will automatically transfer back to normal source if acceptable.
• Inhibit transfer to emergency
• Remote time delay bypass switch emergency to normal
  
  TIME DELAYS
   
• Engine start time delay – delays engine starting signal to override momentary normal source outages – adjustable to 0 to 6 seconds (Feature 1C)
• Transfer to emergency time delay – adjustable 0 to 60 minutes (Feature 2B)
• Emergency source stabilization time delay to ignore momentary transients during initial generator set loading – adjustable 0 to 4 seconds (Feature 1F)
• Re-transfer to normal time delay – adjustable 0 to 10 hours (Feature 3A)
• Unloaded running time delay for engine cool down – adjustable 0 to 60 minutes (Feature 2E)
• Pre and post signal time delay for selective load disconnect with a programmable bypass on source failures – adjustable0 to 5 minutes (specify ASCO Optional accessory 31Z)
• Adjustable time delay to override momentary normal source outages to delay all transfer switch and engine-starting signals.