User manual

PRG SERIES 400
®
400 AMP DISCONNECT USER MANUAL 3
OVERVIEW
Description
The PRG Series 400® 400 Amp Disconnect is a safety device containing a three-phase, 400 Amp circuit breaker
serving as a Main Breaker for high current AC power distribution systems. A Disconnect unit is required when 5-wire,
4/0 AWG feeder cables greater than 10 feet in length are connected from a house service greater than 400 Amps per
phase to a portable power distribution system.
The S400 Disconnect interrupts the 3-phase current flow under fault conditions, preventing dangerous overloads of
the feeder cables. The S400 Disconnect may be used with the PRG Series 400 Power and Data Distribution System,
other power distribution systems, and with portable power sources (generators) as long as its ratings are not
exceeded and an adequate Earth ground has been established.
Features:
+ Six Cam-Lok Series E1016 high-current connections for
power input.
+ Two sets of six Cam-Lok Series E1016 high-current
connections for power output.
+ Double Neutral connectors to handle excessive neutral
current generated by low power factor loads.
+ Seven digital LED meters to monitor power flow - three
voltmeters to measure phase voltages and four current
meters to measure current flowing in each phase and the
neutral.
+ Neon indicators to show when feed cable is energized.
+ Adjustable control for setting inrush limit.
+ Five color coded, insulated test points for metering output
voltages.
+ Multiple local convenience outlets.
+ Solid copper rigid bus bars and two thermostatically
controlled cooling fans allow operation at 100% of Rated
current.
+ Suitable for use in the U.S. and Canada, or any locality
with a 5-wire, 120/208V power grid.
Proper Use and Operation
Please observe the following safety, use and operational guidelines:
+ The S400 Disconnect is intended for dry locations only and must be protected from rain and other moisture if
used outdoors.
+ Two S400 Disconnect racks may be stacked on top of each other. The upper rack’s casters will nest on top of the
lower rack. When stacking racks, use a strap to tie them together for stability.
+ The S400 Disconnect may be operated with the front cover in place for security or weather protection. The fans
draw and exhaust to the rear of the rack.
+ The cooling fans turn on automatically when the internal bus bar temperatures exceed 135°F. This only happens
when the S400 Disconnect rack is in the sun on a hot day or when it is loaded to its maximum. The fan may cycle
on and off during normal operation.