LBW-Series 50KW-2500KW Water-Cooled Load Bank Overview • Water-cooled Load Bank System • 50-2500KW, to 600VAC, to 250VDC • Compact, space-efcient design • Totally quiet operation • Suitable for use with chilled-water systems • Digital control Description The Simplex LBW-Series comprises a line of water-cooled Load Banks, 502500KW, to 600VAC, 250VDC. The LBW-Series is an attractive alternative to air-cooled Load Banks: it is perfectly quiet and cool running; it is extremely compact and may be installed in otherwise unutilized space; it is virtually maintenance free. The LBW-Series is more reliable and maintenance free than a comparable aircooled Load Bank due to two principle factors: 1. The water-cooled unit can be installed indoors in a controlled environment versus an outdoor installation which is exposed to the elements. 2. The water-cooled Load Bank operates at much lower temperatures than an air-cooled unit. Although high in unit cost than a comparable air-cooled Load Bank, the water-cooled unit can be signicantly less costly to install. The water-cooled unit may require far less connection cable/conduit since it can be installed indoors, possibly nearer to the power source. The LBW-Series is ideal for installation in buildings in central-city areas, industrial parks or ofce complexes where an outdoor air-cooled Load Bank would be architecturally obtrusive or impossible to install due to space restrictions. The LBW-Series consists of an assembly of high-pressure load cells in a structural steel tubing frame, clad with steel panels. Coolant ow is via intake and exhaust manifolds with feeder lines to each load cell. Coolant ow is controlled by a main electrically operated valve. Insight Onsite LBW-400 The load cells are rated for operating pressures up to 180PSI. High pressure systems are available. Each load cell includes sensors for overtemperature, overpressure, loss-of-ow, and low coolant level. Load elements are water immersion power resistors. Discrete, branch circuit elements with screw plugs are utilized to permit replacement of individual elements. Load control is via magnetic contactors. Available load step ratings are 25KW, 50KW, or 100KW. Comprehensive branch circuit fusing of load elements is provided. Each 50KW branch circuit is individually protected by current-limiting type fuses. Control power for the Load Bank is provided by 120V, transformer isolated, internal power supplies. Control power can be derived internally, from the connected power source or from an external source. Power distribution within the Load Bank is via a 3-phase main copper load bus. Field power connections are made to the bus. The LBW-Series is suitable for use with a variety of cooling media, including city water (nominal 50PSI), closed loop chilled water systems, heat exchanger systems, pumped water from natural sources (lake, river, etc.) or brine or sea water (requires optional nickel alloy construction and elements). Limited temperature rise-high ow rate systems are available for use with chilled water systems. These Load Banks limit temperature rise to a nominal 12.5°F and consequently accept very high ow rates (50 GPM per 100KW). ®

LBW-Series ® 50KW-2500KW Water-Cooled Load Bank • Page 2 Load Elements Water-immersion type, screw-plug mounting Water Connections 2”, 4”, or 6” as required by ow Coolant Flow Control Main electrically operated valve Load Element Circuit Protection Branch circuit fuses, each 50KW branch 600V, 200KAIC branch circuit fuses Power Wiring 150°C insulated Power Connection Bus bar System Protection LBW-400 Control Section Sensed at each load cell: overpressure, overtemperature, low coolant level, lossof-ow. Lockout and alarm at control panel. Controller Simplex D-Series Digital Load Bank Controller:...

Insight Onsite LBW-Series 50KW-2500KW Water-Cooled Load Bank • Page 3 LBW-2500 (half module shown) SPECIFICATIONS CAPACITY: 50KW-2500KW, Resistive, 1.0 p.f. Greater than 2500KW available as multiple modules. VOLTAGE: to 600VAC, to 250VDC FREQUENCY: 50Hz, 60Hz and 400Hz LOAD STEPS: 50KW resolution standard. 1-5-10-25KW resolution available. COOLANT: City water, closed -loop heat exchanger, natural water (river, lake, etc.) brine*, sea-water* COOLING CHARACTERISTICS: Normal Duty 10 GPM per 100KW, 62.5°F rise Minimum Cooling Requirements 6.25 GPM per 100KW, 100°F rise, outlet not to exceed 170°F...

LBW-Series ® 50KW-2500KW Water-Cooled Load Bank • Page 4 LBW-400 LBW-600 LBW-2500 Simplex, Inc. 5300 Rising Moon Road Springeld, IL 62711-6228 217-483-1600 Fax 217-483-1616 www.simplexdirect.com © 2011 Simplex, Inc. All Rights Reserved. Printed in the USA • 1105-02.00 Design subject to change without notice.