Alpha Technologies Cordex 48-1kW 23 4000W - Manual (Page 11)

A RGUS T ECHNOLOGIES C ORDEX 48-1 K W 23" S HELF FOR S YSTEMS UP TO 4000W WITH D ISTRIBUTION
4 W IRING AND C ONNECTIONS
This chapter provides cabling details and notes on cable sizing for DC applications with respect to the shelf.
Refer also to drawings at the rear of this manual.
4.1 Safety Precautions
WARNING
Hazardous AC voltages may be present. Ensure power at the AC service panel is
off before attempting work on the AC connections. Use a voltmeter to verify the
absence of voltage. Clearly mark the correct polarity of the battery leads before
commencing work on DC connections.
Refer to the previous (Installation) chapter for additional safety precautions.
4.2 Tools Required
Various tools are essential for product installation. Use this list as a guide:
• Slot head screwdrivers (blade sizes: 1/4”, 1/8”, 1/16”)
• Philips head screwdriver, #2 (tip size 3/16”)
• Digital voltmeter equipped with test leads
• Adjustable 24/48VDC load (optional)
• Cutters and wire strippers
• Crimping tool (optional for large gauge wire)
• Socket and rachet set (Imperial measure)
• Anti-static wrist strap
• Computer (laptop) with Microsoft® Internet Explorer 6 or up
• Crossover cable RJ-45 (for access using the Ethernet port)
• Null modem cable (for access using the RS-232 port).
4.3 Power System Chassis Ground
WARNING
For safety reasons, ensure the system is properly bonded to the building’s ground
grid.
Both the shelf chassis ground (via power system chassis ground) and common return shall be connected to the site
ground to ensure correct operation of the system and to prevent drifting floating analog (especially current)
readings.
4.4 AC Feeder Protection/Sizing
To maximize system reliability, a dual AC feed divides the rectifiers into two groups to be supplied by two
separate feeds. It is recommended for each feed to use a dedicated protection feeder breaker located at the AC
distribution panel. The feeder breaker can also act as the disconnect device for the connected modules.
Note: The recommended AC supply configuration for up to two rectifiers on AC feed is a 20A breaker with #12
AWG (90 deg. C) wire at 30 deg. C ambient.
030-704-C0
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