Document Outline

• Important User Information
• Additional Resources
  • Ch 1 - Introduction
  • Ch 2 - Installation
  • Ch 3 - Communications
  • Ch 4 - Applying Power
  • Ch 5 - Operation
  • Ch 6 - Display Screen
  • Ch 7 - Maintenance
  • Ch 8 - Specifications
• Chapter 1
  • Introduction
    • Safety Considerations
• Chapter 2
  • Installation
    • System Components
      • This document applies to the following MegaDySC System Models:
        • Table 1 - MegaDySC System Models
    • System Layout
      • Figure 1 - Standard Run (SR) System Layout
      • Figure 2 - Extended Run (ER) System Layout
    • System Clearance
    • System Mounting
      • Figure 3 - System Mounting
      • Figure 4 - Floor Mounting Detail
    • Electrical Interconnections
      • Instructions for energizing loads before commissioning
        • Figure 5 - Rear view of Automatic Bypass Switch board
        • 1. Route the INPUT power cables (labeled L1, L2, L3) through the top bushing in the right-side wall of the switchboard, labeled “Input to DySC”
        • 2. Route the OUTPUT power cables (X1, X2, X3) and Ground cable through the bottom bushing labeled “Output from DySC”
        • 3. Route the control cable harness from the lower front switchboard pan into the MegaDySC section through the matching holes in the lower front side panels. Install the 3.5” snap-in grommet so that it protrudes into the MegaDySC cabinet before rout...
        • 4. Lockout circuit breakers CBI and CBO in the Automatic Bypass Switchboard.
        • 5. Install utility input and load output conductors.
        • 6. Energize the switchboard. The MegaDySC touch screen display will be active only if the control harness has been plugged in on the MegaDySC side. If the screen is active then 120VAC is present at several points within the MegaDySC enclosure.
        • 7. Push the green CLOSE CBB button to energize loads. The remaining interconnections and commissioning must be completed by factory-trained technicians.
          • Figure 6 - Switchboard Terminations and Conduit landing areas
      • MegaDySC System Installation Connections Checklist
      • MegaDySC System Interconnections Checklist
• Chapter 3
  • Communications
    • Remote Diagnostics and Remote Bypass
      • Figure 7 - Schematic Diagram - Status Relay Contacts
    • CBB Contacts (Bypass Circuit Breaker)
    • CBI Contacts (Input Circuit Breaker)
    • Remote Seamless Bypass Command-EPO
    • Contact Ratings
    • MegaDySC Status Contacts
    • RS-232 Serial communications
      • Figure 8 - Serial Communications Port and MegaDySC Status Relay Contacts
    • i-Sense Voltage Monitor Communications
      • Figure 9 - Communications Conduit Entrance view from within upper switchboard compartment
• Chapter 4
  • Applying Power
    • Notes:
• Chapter 5
  • Operation
    • System Description
    • MegaDySC Operation
      • Table 2 - Operational Conditions and Indications
    • Automatic Bypass Switchboard Operation
    • Automatic Bypass Switchboard Operating Instructions
      • Automatic System
      • Manual Transfer to Maintenance Bypass (Bypass Mode)
        • 1. If CBB is tripped, Press both "CBB RESET" pushbuttons.
        • 2. Press green "CLOSE CBB" pushbutton.
        • 3. Confirm that red "BYPASS CLOSED" lamp is lit.
        • 4. Press red "OPEN/RESET CBI" pushbutton. Output breaker (CBO) will open automatically.
        • 5. Confirm that both CBI and CBO are open.
        • 6. The MegaDySC is now bypassed and isolated for maintenance.
      • Manual Transfer to MegaDySC (Normal Mode)
        • 1. Press red "OPEN/RESET CBI" pushbutton then press green "CLOSE CBI" pushbutton. Note: "CLOSE CBI" is inhibited for one minute after power cycling.
        • 2. Confirm that the MegaDySC screen is lit, is green and displays "OK" in the upper-left corner.
        • 3. Close CBO by manually moving the handle to the "OFF" (0) position and then to the “ON” (|) position.
        • 4. Confirm that the screen on the MegaDySC displays "OK".
        • 5. Press red “OPEN CBB” pushbutton
        • 6. The MegaDySC system is now providing power to the load.
          • Figure 10 - Schematic Diagram of Automatic Bypass Switchboard Power Circuit
    • Transient Voltage Surge Suppression
    • Troubleshooting Notes
      • Normal Mode
      • Diagnostic Indicators
        • 1. Open static switch (failure in static switch path)
        • 2. Open main input fuse (F1-F2-F3)
        • 3. Overload of static switch (may cause over-current trip in CBI; see Specifications)
        • 4. Over-temperature of static switch heatsink
        • 5. Over temperature of MegaDySC cabinet ambient air
        • 6. Open cabinet door
• Chapter 6
  • Display Screen
    • Overview
      • At installation time perform the following steps to configure your system:
        • Figure 11 - Home Screen
        • Figure 12 - System Configuration
        • Figure 13 - Touch Screen Calibration
        • Figure 14 - Set System Date and Time
    • Home Screen
      • Figure 15 - Home Screen
      • Table 3 - Home Screen Description
      • Mechanical Bypass
        • Figure 16 - Home Screen Mechanical Bypass
    • System Status
      • Figure 17 - System Status Summary
      • Figure 18 - - System Status Waveforms
      • Table 4 - System Status Description
      • Figure 19 - Status Screen Bypass Status
    • Voltage Sag Events
      • Voltage Sag Log
        • Figure 20 - Voltage Sag Log
        • Table 5 - Voltage Sag Log Description
    • Voltage Sag Detail
      • Figure 21 - Voltage Sag Detail
      • Table 6 - Voltage Sag Detail Description
    • Voltage Sag RMS Voltage Charts
      • Figure 22 - RMS Voltage Charts
    • Voltage Sag Notification
      • Figure 23 - Voltage Sag Detected
    • System Events
      • Table 7 - System Event Description
      • Informational
      • Auto-Resetting
      • User Attention
      • Manual-Reset
      • Call Service
      • System Event Log
        • Figure 24 - System Event Log
        • Table 8 - System Event Log Description
    • System Event Detail
      • Figure 25 - System Event Detail
      • Table 9 - System Event Detail
      • System Event Notification
        • Figure 26 - System Fault Detection
        • Figure 27 - System Fault Detection - Cleared
    • System Configuration
      • Figure 28 - System Configuration
    • Model Information
      • Figure 29 - Model Information
      • Table 10 - Model Information
      • Run System Tests
        • Figure 30 - System Tests
      • Diagnostics Mode
• Chapter 7
  • Maintenance
    • Preventative Maintenance
      • Monthly Checks
      • 3-6 Month Checks
        • Table 11 - System Event Table
    • Servicing
      • Automatic Circuit Breakers, Safety Interlocks and Stored Energy
    • Fuses
      • Automatic Bypass Switchboard Fuses
      • MegaDySC and ER Cabinet Fuses
        • Table 12 - MegaDySC Fuse Schedule
• Chapter 8
  • Specifications
    • Table 13 - Technical Specifications 400 A MegaDySC
    • Table 14 - MegaDySC Heat Loading and Typical Efficiency
    • 480V
    • 480V
    • 380V
    • 380V
    • SR
    • ER
    • SR
    • ER
    • 2421
    • 2852
    • 2321
    • 2624
    • 8270
    • 9740
    • 7925
    • 8960
    • > 99%
    • > 99%
    • > 99%
    • > 99%
      • Table 15 - MegaDySC System Weight
    • 3W
    • 3W
    • 4W
    • 4W
    • SR
    • ER
    • SR
    • ER
    • 1792 lb [813 kg]
    • 2656 lb [1205 kg]
    • 1792 lb [813 kg]
    • 2656 lb [1205 kg]
    • 1075 lb [488 kg]
    • 1075 lb [488 kg]
    • 1039 lb [471 kg]
    • 1039 lb [471 kg]
    • 2867 lb [1300kg]
    • 3731 lb [1692 kg]
    • 2831 lb [1284 kg]
    • 3695 lb [1676 kg]