Page 81 - SOS Catalog
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Rental Duty                                  NAUTILUS 250R
                       Variable Load Steps
                         480v Load Bank                            250KW Resistive Water Cooled Load Bank





                  Description
                                                      flow rate, temp in, temp
                  The Simplex Nautilus-250 is a water-  out, temp rise. Automatic
                  cooled load bank designed expressly for   thermostatic control allows
                  data-center chiller commissioning and   operator to enter value of
                  testing applications. The Nautilus-250   temp rise. Controller then
                  is a compact, portable product featuring   adjusts flow rate to maintain
                  infinite power and water flow control   that rise.  Controller inhibits
                  for precise temperature rise setting   over temperature, greater
                  versus applied power. The Nautilus is   than 180°F outlet temp.
                  fully networkable for control of single or   Displays: AC 3-phase
                  multiple units from a remote station.   voltage and current,
                                                      frequency, kilowatts.
                  Using a PLC with touchscreen HMI,   Alarms: high outlet temp,
                  integrated with temperature sensors   low flow, high pressure
                  and flow transducers and controlling an   Messages: normal
                  electrically operated water proportioning   operation, valve open, valve
                  valve, the Nautilus allows the operator   closed. Water Flow Control
                  to select precise power levels, versus   Messages: water inlet temp,
                  water temperature rise versus water   water outlet temp, overall
                  flow rates. Power level is infinitely   temp rise, main manifold
                  controllable over a 0-250kw range.   water flow rate, valve
                                                      position in percent of open.
                  Multiple Nautilus Load Banks can be
                  controlled from a single operator HMI.   Capacity: 250 kW
                  Software is available for control from a
                  Windows- based PC, for data acquisition   Voltage: 480vAC, 3-phase,
                  and for full testing automation.    3-wire

                                                      Frequency: 60 Hertz
                  Features
                                                      Load Steps: Infinitely
                  The load bank is a completely self-  variable via digital control,
                  contained, freestanding unit, which   comprised of circuits as
                  includes all resistive load elements, load   follows -
                  control, load element branch circuit fuse   kW: 0-25 – 25 – 50-50-50-
                  protection, main load bus and terminals,   50
                  valves and fittings, control power supply,
                  malfunction detection system.       Duty Cycle: Continuous
                  Control System: PLC control with    Ambient Temperature:
                  8-inch color TFT touchscreen HMI.   52°C
                  Screen is configured for local or remote
                  operation.  Remote requires 120v power
                  source.                             Control Power: External, via power
                                                      inlet and power cord to 120v 15A outlet  Water Connection: 2-inch, water inlet
                  Control Function: Master control on-off                                 and water outlet.  Quick disconnect
                  button; keypad entry of load values,   Cooling Requirements: Fresh water;   couplings, shutoff ball valves.
                  apply and remove buttons; controller   Nominal 125 GPM supply yields approx.
                  calculates reduced voltage load values   12.5°F rise at full power; Flow rate is   Enclosure: Environmental type 1
                  automatically, applying actual requested   infinitely variable to a max temp rise not   freestanding, indoor, portable enclosure.
                  load value for the applied voltage up   to exceed 180°F outlet -        Aluminum frame clad with aluminum
                  to the reduced voltage capacity of   KW = GPM x Temp. Rise (F) x .16    panels and doors. Front power
                  the load bank. Water Flow Control:   GPM = KW / (Temp. Rise x .16)      connections. Rear water connections.
                  Either full on or thermostatic control.                                 Casters, forklift pads, lifting eyes.
                  Thermostatic control is either manual or   Temp. Rise (F) = KW / (GPM x .16)   Powder coated white cabinet, blue
                  to a temperature rise preset. Operator   Weight: Approximately 1600 lbs full of   doors. 72H x 24W x 36D
                  interface is a screen based vernier valve   water, 900 lbs dry
                  control with displays of valve position,








                                                                                   Rental Centers: Springfield, IL; Atlanta;
                                                                                   Baltimore; Boston; Denver; Houston; Minneapolis



          SOS-Nautilus-1409-05.01a.indd   1                                                                          7/11/2016   1:42:14 PM
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