LBD-Series Radiator-Cooled Load Bank Description Simplex LBD Load Banks are a special form of stationary, resistive, forced air-cooled load bank which utilizes the air outow of an engine radiator for cooling of the resistive load elements. This application recovers and uses the volume and velocity of air exiting the radiator and realizes in load bank design the advantages of reduced size, complexity and cost. It may appear incongruous that “hot air” from the radiator is used for “cooling.” Insight Onsite However, “hot” and “cold” are highly relative in this case. The air exhausting from the radiator and entering the load bank may be as hot (or cold) as 180°F. However, the load elements are heated to an average of 700°F, and, most important, the air volume and velocity is very high relative to the heat energy being dissipated by the load bank. Consequently, the critical value of “air temperature rise” is limited to a conservative nominal 100°F. Despite an apparent “hot” environment, LBD Load Banks actually operate “cooler” than comparably rated load banks with integral cooling fans which are installed in the relative “cold.” ®

LBD-Series ® Radiator-Cooled Load Bank • Page 2 Simplex LBD Series Load Banks are intended for use with water cooled engine generator sets which are equipped with unit mounted radiators. The essential consideration for installation of an LBD Load Bank is only that it be located somewhere within the radiator air outow. Installation is simple and adaptive to site/system conditions. The load bank can be installed in numerous ways, including direct bolted attachment to the radiator, mounting within an air duct, wall mounting over the air outow opening, indoors or outdoors. Since the load bank design...

Insight Onsite LBD-Series Radiator-Cooled Load Bank • Page 3 Pow’r Rod Load Element Simplex bolt-together design LBD Load Bank (up to 400KW) utilizes the Pow’r Rod Load Element (UL Recognized Component, totally enclosed, sealed and weatherproof). Considerations of personnel safety and equipment durability dictate the use of totally enclosed load elements in a radiator airow cooled load bank. In this application the load bank will be installed in front of the engine radiator where the load elements are visible and within reach of personnel and exposed to the weather. The elements will be subject...

LBD-Series ® Radiator-Cooled Load Bank • Page 4 Powr-Web Resistive Load Element Simplex weld-together design LBD Load Bank (400KW-1200KW) utilizes “Powr-Web” load elements. The “PowrWeb” is an advanced design, air-cooled power resistor specically designed for application to Load Bank systems. The “Powr-Web” is conservatively operated at half the maximum temperature rating of the alloy and features a short-circuitsafe design based on continuous mechanical support of the element by high temperature, ceramic clad stainless steel rods. Specications • Alloy: FeCrAl • Maximum continuous temperature...

Insight LBD-Series Onsite Radiator-Cooled Load Bank • Page 5 Dimensions & Calculations Simplex LBD Series Radiator Airow Cooled Load Banks are of a modularbuilding block design which enables Simplex to build-up a load bank, from stock modular parts, to exactly match your radiator or duct dimensions. Mounting adaptors, feet and outow guards are also available from stock. The control section’s standard location is on the left side, but it may be ordered on the right side. A control section may be required on both sides in some applications. Bolt-Together Design LBD Series Dimensions & Calculations...

LBD-Series ® Radiator-Cooled Load Bank • Page 6 Installation Simplex LBD Series Load Banks can be installed at any point within the radiator air outow, either indoors or out. Simplex, Inc. 5300 Rising Moon Road Springeld, IL 62711-6228 217-483-1600 Fax 217-483-1616 www.simplexdirect.com Mounting accessories and outlet screens, guards, and louvers are available as options. © 2011 Simplex, Inc. All Rights Reserved. Printed in the USA • 1105-01.02 Design subject to change without notice.

Insight Onsite LBD-Series Radiator-Cooled Load Bank • Page 7 Mounting Accessories A. Load Bearing Flanges Load bearing attachment ange for either inlet or outlet side for mounting to radiator, or to sheet metal duct. Load bearing attachment ange, for wall mounting, for inlet or outlet side of load bank, for indoor or outdoor installation of load bank. B. Adjustable Feet Adjustable mounting feet for oor mounting, or mounting to extension of engine base C. Outow Guards Outow guards for air outlet side of load bank to guard against contact with hot surfaces and/or to provide weather protection ©...

LBD-Series ® Radiator-Cooled Load Bank • Page 8 Sample Specications Engineer’s Specication for Engine Radiator Airow Cooled Load Bank Options in the specications are italicized within parentheses. Blanks are provided in section 1.4, Ratings, for the addition of specic rating values. 1. GENERATOR LOAD BANK 1.1 General: An engine radiator airow cooled, resistive load bank is required for permanent, on site installation as a component of a standby engine generator system. The load bank shall be designed for (remote, local), (automatic, manual) control. The load bank (bolt-together design only -...