Model ODSR Radiator Mounted Load Bank

STANDARD RATINGS AVAILABLE:
4(U.S.A.): 10-1000kW @ 480V, 3Ø, 3W, 60Hz
4(U.S.A.): 10-500kW @ 208V, 3Ø, 3W, 60Hz
4(U.S.A.): 10-250kW @ 240V, 1Ø, 2W, 60Hz
4(U.S.A.): 10-1000kW @ 240V, 3Ø, 3W, 60Hz
4(EXPORT): 10-1000kW @ 380-415V, 3Ø, 3W, 50Hz
4(U.S.A./EXPORT): 10-1000kW @ 600V, 3Ø, 3W, 60Hz
4VOLTAGE RANGE: 208V to 600V
4FREQUENCY: 50Hz, 60Hz, or 400Hz

GENERAL STANDARD SPECIFICATION:
4STEP RESOLUTION: 25% Minimum of kW Rating, up to 10% (nominal)
4RECOMMENDED LOAD BANK kW % OF GENERATOR: 80% Maximum
4MAXIMUM LOAD BANK kW % OF GENERATOR: 100%**** (not recommended)
4TOLERANCES: ±5% overall, ±2% Ø-Ø
4AMBIENT: -20°F/-30°C to +120°F/+50°C
4ALTITUDE: 4000 FT / 1200 M
4ENCLOSURE RATING: Nema 3R (Outdoor Weatherproof)
4CONTROL LOCATION: Integral / Locally Mounted PDC (Remote Optional †)
4CONTROL: Programmable Digital Controller (PDC) w/ LCD Display
4CONTROL POWER: 24VAC (Transformer Supplied)
4PAINT PREPARATION: SSPC Surface Prep. Std. #SP1
4PAINT FINISH: UV Resistant Premium High Performance Acrylic Enamel
4PAINT COLOR: Painted to Match Major Manufacturer Engine Color
4COOLING: Forced Air by Engine Radiator Fan
4LOAD RESISTORS: RESISTAR® Power Resistor, Continuously Held
4POWER CONTROLS: Electrically Held Contactors w/ Fuses
4ENCLOSURE: Galvanized Steel with Stainless Steel and/pr Corrosion Resistant Exterior Hardware
4WARRANTY: Tier #1- (1) Year Standard Limited, (3) Years Resistors & Electronics
4EXHAUST: Horizontal Exhaust Air Discharge through protective NEMA/OSHA screen guards
4MANUALS: (2) Electronic O&M w/Drawings & BOM, with supplemental detailed operator controller instructions
4ORIENTATION: Control & Power Orientation can be easily reversed at the factory or in the field switching the screen guard
and attachment flange sides
METERING: Integrated into PDC Digital Controller
4VM: Average & Ø-Ø, 1V Resolution
4AM: Average & Ø-Ø, 1A Resolution
4FM: 45-65 Hz., 0.1 Hz. Resolution
4KW: Load Bank & Generator, 1KW Res. (Automatic Loading Operation Function must be enabled to display SOURCE value)
PROTECTION:
4FUSED: Load & Control Circuits
4TEMPERATURE: Resistor & Control Section
4VOLTAGE: Voltage Range - Max & Min
4FREQUENCY: Frequency Range - Max & Min

FOOTNOTES:

† OPTIONAL ITEM(S)
The "†" symbol is used throughout the entire website to note and identify any optional item, feature, or equipment not included in the
standard base pricing of the load bank and/or equipment. These optional items are available for additional costs.

*AUTOMATIC LOADING OPERATION
The Automatic Loading function is standard as it is installed/embedded in the firmware of the Programmable Digital Controller (PDC). To enable and utilize this function,
external Current Transformer(s) (CT's) must be installed per manufacturer's guidelines and recommendations. External CT's are available for purchase through
LOADTEC's Parts Department. External CT's are not included with any proposal or quotation offering unless specifically mentioned in writing.

**REGENERATIVE ABSORPTION CONTROL (REQUIRES ENABLING OF AUTOMATIC LOADING OPERATION)
The Regenerative Absorption Control function is standard as it is installed/embedded in the firmware of the Programmable Digital Controller (PDC). To enable and utilize
this function, AUTOMATIC LOADING OPERATION must first have been enabled and functioning. The Regenerative Absorption Control utilizes the same external Current
Transformer(s) (CT's) that drive the AUTOMATIC LOADING OPERATION function.

***AUTOMATIC EXERCISE OPERATION
The Automatic Exercise function is standard as it is installed/embedded in the firmware of the Programmable Digital Controller (PDC). To enable and utilize this function,
it requires an external control power source for the real time clock. The external control power source can be either the facility power source or the generator's
starting batteries (12VDC -36VDC). A 2 wire "START" control for the generator is required to accomodate this function.

****LOAD BANK kW PERCENTAGE RATING IN RELATION TO GENERATOR RATING
The primary reason to include a Load Bank is to exercise and support the generator operation based on the sites specific requirement. A 60-80% Load Bank is
typically more then adequate. NFPA 70, NEC code requires testing on the EPSS at anticipated connected load on a schedule. Typically a generator is not sized at
smaller then 80% of the anticipated connected load. LOADTEC® generally does not recommend a 100% rated Radiator Mounted unit since the site has already been
performance proven at original acceptance by external Load Banks to prove 100% performance. After proving the installation, the primary use of the Load Bank is to
provide a tool for maintenance and operational support loading. There is no practical reason to test at 100% for routine exercising. LOADTEC® also does not
recommend installation of 100% rated Radiator/Duct Mounted Load Banks without special considerations as well. The following conditions should be reviewed at bare
minimum: 1) Is the radiator sized to provide engine cooling at 100% load at rated operating ambient and altitude? 2) Will the radiator cooling fan still deliver the required
cooling air flow with the increased static pressure ( approx. .15" W.C. max. ) imposed by the load bank? 3) The radiator should be sized at least 5-10% overrated to
compensate to radiant heat from the load resistors if the Load Bank is mounted within 12" of the radiator core. Even if the previous conditions are compensated for,
the radiator may not provide enough core height and width to accomadate the required number of load resistors.

*****INSTALLATION NOTES
Installation is not included or offered with any LOADTEC® Load Bank. Installation may require licensed personnel and/or a contractor according to local jurisdictional
requirements. If the LOADTEC® customer does not provide detailed information regarding the mounting holes for the engine radiator, the load bank radiator flange will
be provided "blank" for drilling flange holes that line up with the radiator mounting holes in the field (by others). Please note that any load bank manufacturer's radiator
mounted load banks cannot be used on a typical factory sound-attenuated enclosed generator package. These packages typically have covers over the radiator
opening with the engine silencer mounted in front of the radiator cores. These obstacles do not allow the installation of the Load Bank in the radiator air stream for
cooling. Please inquire with the factory regarding the compability of a LOADTEC® Radiator Mounted Load Bank with a factory standard sound enclosure. Upon
providing a drawing of the sound enclosure to LOADTEC®, we will be able to determine the capability and/or offer alternative solutions to fit our customers' specific
needs.

DISCLAIMER: All information contained within this website is provided as a courtesy to our customers and is subject to change without notice. LOADTEC strives to
post the most accurate, updated, and current information regarding our products and services. The information on this website should be deemed reliable; however
not guaranteed. LOADTEC reserves the right to correct any errors or ommissions regarding this site and/or any proposal offerings. Pictures displayed on the website
are for illustrative purposes only and may depict or show (but not limited to) optional: items, equipment, colors, features, configurations, & arrangements that may or
may not be available for an additional cost. Weights and dimensions shown are a close estimate and are deemed reliable, but may vary due to the addition of optional
equipment and or minor production changes throughout the life of the particular load bank model. The pictures and information were accurate at time of website
publishing to the world wide web.

APPLICATION DATA
4USE: This model provides an economical alternative to a freestanding load bank for meeting NFPA 70, National Electrical Code
Standard, Article 700-4 for the exercising and operational support of a standby/emergency generator set. The load bank is typically
recommended to be installed outdoors allowing the heat produced to be discharged into the atmosphere. A load bank sized for the
"maximum anticipated load" of the facility will provide an optimum maintenance load in accordance with NFPA 70. It also fulfills the
exercising requirements of NFPA 99 & 100. Load bank use also prevents "wetstacking." Wetstacking is a condition that can exist in
diesel engines when all the fuel is not completely burned and passes into the exhaust system. In Diesel generators, wetstacking usually
occurs because the engine is running at only a small percentage of its capacity; therefore the engine does not achieve its optimum
operating temperature. Wetstacking may be detectable when there is a black oily residue exiting the exhaust, poor stability of the
generator, or when poor generator frequency occurs. Wetstacking can shorten the life expectancy of a diesel generator engine. Utilizing a
load bank to supplement the source load (or as the only test load) will help maintain the engine's optimum output rating and will eliminate
wetstacking (if the load bank is properly sized). Load banks may also be of necessity for the diesel engine's oxidation catalyst (soot trap)
system. Many air quality control districts require these emission reduction systems. In order for the oxidation catalyst system to function
properly, the engine exhaust must be maintained at a minimum output temperature. The exhaust temperature must be maintained at the
specific minimum level to regenerate the oxidation catalyst system to meet air quality standards.
4SIZING****: The primary reason to include a Load Bank is to exercise and support the generator operation based on the sites specific
requirement. A 60-80% kW rated Load Bank (in relation to generator kW rating) is typically adequate. NFPA 70, NEC code requires
testing on the EPSS at anticipated connected load on a schedule. Typically a generator is not sized at smaller than 80% of the
anticipated connected load. LOADTEC® generally does not recommend a 100% rated Radiator Mounted unit since the site has already
been performance proven at original acceptance by external Load Banks to prove 100% performance. After proving the installation, the
primary use of the Load Bank is to provide a tool for maintenance and operational support loading. There is no practical reason to test at
100% for routine exercising. If a 100% radiator mounted load bank is insisted upon, LOADTEC® still does not recommend installation of
100% rated Radiator/Duct Mounted Load Banks without reviewing special considerations and the following conditions at bare minimum: 1)
Is the radiator sized to provide engine cooling at 100% load at rated operating ambient and altitude? 2) Will the radiator cooling fan still
deliver the required cooling air flow with the increased static pressure (approx. .15" W.C. max.) imposed by the load bank? 3) The radiator
should be sized at least 5-10% overrated to compensate to radiant heat from the load resistors if the Load Bank is mounted within 12" of
the radiator core. Even if the previous conditions are compensated for, the radiator may not provide enough core height and width to
accomadate the required number of load resistors.
4INSTALLATION*****: The load bank is quickly and easily installed on the exhaust side of the engine radiator. The load bank can also
be integrated into the actual exhaust plenum ductwork as an alternate installation method. The radiator mounted load bank is
dimensionally matched to the radiator core and provided with a mounting flange that bolts to the radiator. This unit is typically installed and
cabled by the generator set packager which provides a complete system without costly site construction requirements. The Programmable
Digital Controller is standardly integrated and installed locally to the load bank control access door. If one of the remote control options are
selected from the option list below, the Remote PDC Controller † requires only a single CAT 5 communication cable for
connection and no additional control power if located within 250 feet of the load bank.
4OPERATION: The Programmable Digital Controller (PDC) provides a complete generator operational support system. The controller is
programmable for: start-up base loading for load acquisition support, automatic loading/regenerative operation for light and variable loading
applications, automatic exercise with alarm monitoring, and basic manual control functions for installation commissioning.
4CONSTRUCTION: The load bank is designed and constructed for a long and reliable life in industrial environments. The load bank is
constructed of galvanized steel that is primed & painted using UV Resistant Premium High Performance Acrylic Enamel. The enclosure
meets U.L. & Nema construction standards and is standardly provided with radiator attachment flange(s), overhead lifting provisions,
protective screen guard, exhaust plenum attachment flange, structural base mounting provisions, stainless and/or corrosion-resistant
exterior hardware, and hinged access door for connection & control compartment. There are also many optional controller orientations to
meet the installation requirements.
4RESISTAR® LOAD RESISTOR: The RESISTAR® is designed specifically for high-density applications. The resistor is continuously-
supported to minimize shorting contact with surrounding resistors. The resistors are terminated and supported with ceramic components;
no plastic or polyester glass laminates are used. The RESISTAR® does not require a cool down period and has a standard
industry-exclusive 3 year limited warranty.
4COOLING: The load bank is forced-air cooled by the generator/engine radiator fan. 1500FPM Typical Flow.
4PROTECTIVE CIRCUITS: The load bank is protected with fusing for each load section and control circuit. It is also provided with a
temperature sensor to disconnect the load bank on an over-temperature failure condition. The load bank's cooling airflow is inherently
present whenever the engine is running and generating a power output. Voltage and Frequency ranges are also monitored to protect the
control power circuits and during alarm exercise failures.

AUTOMATIC LOADING OPERATION:*
The Automatic Loading Operation Function provides the capability to
program a minimum loading of the source. This loading reduces inefficient
or unstable operation of the source.
THE FOLLOWING PARAMETERS ARE PROGRAMMABLE:
4ENABLE / DISABLE
4SOURCE RATING
4PERCENTAGE OF LOAD TO MAINTAIN
4CURRENT TRANSFORMER SIZE
4DELAY PROFILES: INITIAL, LOAD, UNLOAD
4LOADING RESOLUTION

REGENERATIVE ABSORPTION OPERATION:**
The Regenerative Absorption control function provides
the capability to absorb load regeneration from sources
such as elevators, cranes, etc. to prevent generator
overspeed.
THE FOLLOWING PARAMETERS ARE PROGRAMMABLE:
4ENABLE / DISABLE
4PERCENTAGE OF REGENERATION

STANDARD EMBEDDED OPERATIONAL FUNCTIONS & HIGHLIGHTS
ALL FUNCTIONS CAN BE ENABLED IN THE FIELD AFTER SHIPMENT & INSTALLATION

MANUAL LOADING (JOG LOAD) OPERATION:
The Manual Operation allows the operator to directly
apply desired load to the source (in minimum increments
according to load step resolution):
4SELECT LOAD VALUE
4LOAD ON/OFF

TRANSFER SWITCH INTERFACE:
4A contact interface is provided to indicate the position of the transfer
switch to disconnect on loss of utility power.

GENERAL PDC STANDARD FEATURES:
Features included standard with the Programmable Digital Controller (PDC):
4LCD GRAPHIC OPERATOR DISPLAY
4LED LAMPS FOR SYSTEM STATUS
4REAL TIME CLOCK
4NON-VOLATILE MEMORY SAVES SYSTEM SETTINGS & PARAMETERS
4ABILITY TO CONNECT UP TO (4) ADDITIONAL † PDC CONTROLLERS

BASE LOADING OPERATION:
The Base Loading function provides the capability to
program the loading of the generator at starting; and
before the connection to the facility loads. This capability
provides engine turbo boost and alternator field boost to
improve generator connection stability to motor load and
non-linear loads.
THE FOLLOWING PARAMETERS ARE PROGRAMMABLE:
4ENABLE / DISABLE
4VOLTAGE PERCENTAGE INITIATION
4AMOUNT OF LOAD
4TIME LOAD IS APPLIED IN SECONDS

AUTOMATIC EXERCISE OPERATION:***
The Automatic Exercise function provides the capability
to schedule unattended exercising & loading of the
source.
THE FOLLOWING PARAMETERS ARE PROGRAMMABLE:
4ENABLE / DISABLE
4TIME OF DAY
4DAY INTERVAL/DAY OF WEEK
4TEST SEQUENCE: (8) STAGE
4FAILURE TO COMPLETE EXERCISE ALARM
4Under/Over VOLT & FREQ. LEVELS TO ALARM

METERING DISPLAYED:
The Metering is provided to monitor the electrical values and source loading level.
THE FOLLOWING VALUES ARE DISPLAYED:
4GENERAL: VOLTS (VM), AMPS (AM), FREQUENCY (FM)
4LOAD BANK: KILOWATTS (kW)
4SOURCE*: KILOWATTS (kW) (Automatic Loading Operation Function must be enabled to
display SOURCE value)

PROGRAMMABLE DIGITAL CONTROLLER INTEGRAL CONFIGURATIONS AVAILABLE

NEMA 3R REMOTE WALL
MOUNTED PDC ENCLOSURE†
(OUTDOOR WEATHERPROOF)

LOADTEC® ADVANTAGE(TM): HIGHLIGHTS STANDARD AND/OR OPTIONAL
EQUIPMENT / FEATURES AVAILABLE EXCLUSIVELY WITH LOADTEC® LOAD BANKS

NEMA 12 REMOTE WALL MOUNTED
PDC ENCLOSURE†
(DUST-TIGHT)

OPTIONAL ITEMS

† OPTION 1-RD: NEMA 3R REMOTE WALL MOUNTED PROGRAMMABLE DIGITAL CONTROLLER (PDC)
[IN LIEU OF STANDARD INTEGRAL/LOCALLY-MOUNTED PDC CONTROLLER]
A NEMA 3R (Outdoor Weatherproof) Wall Mounted Programmable Digital Controller (PDC) is provided as a substitute
[in lieu of] for the standard integral/locally-mounted PDC.
...see more info on NEMA 3R REMOTE PDC

† OPTION 2-RD: NEMA 12 REMOTE WALL MOUNTED PROGRAMMABLE DIGITAL CONTROLLER (PDC)
[IN LIEU OF STANDARD INTEGRAL/LOCALLY-MOUNTED PDC CONTROLLER]
A NEMA 12 (Dust-Tight) Wall Mounted Programmable Digital Controller (PDC) is provided as a substitute [in lieu of]
for the standard integral/locally-mounted PDC.
...see more info on NEMA 12 REMOTE PDC

† OPTION 3-RD: NEMA 1 SEMI-FLUSH "LOOSE" REMOTE PROGRAMMABLE DIGITAL CONTROLLER (PDC)
[IN LIEU OF STANDARD INTEGRAL/LOCALLY-MOUNTED PDC CONTROLLER]
A NEMA 1 Semi-Flush Control Plate Programmable Digital Controller (PDC) is provided as a substitute [in lieu of] for
the standard integral/locally-mounted PDC.. The NEMA 1 semi-flush open configuration provides the PDC "loose" for
remote mounting in switchgear or other site cabinetry.
...see more info on NEMA 1 SEMI-FLUSH PDC

† OPTION 4-RD: ONE ADDITIONAL REMOTE PROGRAMMABLE DIGITAL CONTROLLER (PDC)
[CAPABILITY TO ADD UP TO (4) ADDITIONAL CONTROLLERS]
An additional (extra) Remote Programmable Digital Controller (PDC) is provided in addition to the standard
integral/locally-mounted PDC. The additional PDC can be added in either NEMA 12 Wall Mounted Enclosure, NEMA
3R Wall Mounted Enclosure, or NEMA 1 Semi-Flush Control Plate "Loose" configuration. OPTION 4 is typically
selected to achieve both an integral (locally) mounted PDC and a remote PDC in either NEMA 1, NEMA 12, or NEMA
3R Remote configurations.

† OPTION 5-RD: EXTENDED WARRANTY TERMS
In addition to the Standard Tier#1 Warranty supplied with every new load bank at time of shipment, additional
extended warranty coverage period tiers are available for purchase up to 5 years from the date of factory shipment.
These optional extended warranty tiers are available in PARTS ONLY, and PARTS & LABOR versions.
...see more info on EXTENDED WARRANTY TIERS INFORMATION

† OPTION 6-RD: MODBUS SERIAL RTU RS485 INTERFACE FOR PLC, BMS, & SCADA SYSTEMS
The MODBUS license for the load bank provides external control of the load bank via Modbus RTU RS485 Serial
Interface (interface does not include programming or setup of Master Modbus control device that communicates with
the load bank). The Modbus Interface is primarily utilized for integration of BMS, PLC, & SCADA SYSTEMS.
...see more info on MODBUS INTERFACE INFORMATION
LOADTEC® is the ONLY load bank manufacturer to offer the ModBus protocol embedded in load banks.

† OPTION 7-RD: LOADLINK® WINDOWS® DLL INTERFACE FOR LABVIEW(TM) & WONDERWARE® INTEGRATION
The LOADLINK® Windows® DLL Interface License provides an interface for integration into software programs such as
LabVIEW(TM) and Wonderware® (programming of system not included).
...see more info on LOADLINK DLL INTERFACE INFORMATION
LOADTEC® is the ONLY load bank manufacturer to offer the LabVIEW & WONDERWARE DLL interface embedded in load banks

† OPTION 8-RD: LOADVIEW® COMPUTER CONTROL, DATA LOGGING & SCRIPTING SOFTWARE
The LOADVIEW® Software is a Windows® PC based control and Data Logging Package. LOADVIEW® Software
provides full REMOTE load bank control and data acquisition on a PC based laptop or desktop computer via an
RS-232 serial port. Data logging features allow the test to be recorded; reports to be customized, configurated,
printed, and also exported to Microsoft Excel®. LOADVIEW® offers the ability to develop customized control screens
with sounds, colors, graphics, & metering, all with an unlimited amount of screens to create. Scripting features also
allow a customized test profile to be automated and configured to a specific project, jobsite, or customer's
requirements.
...see more info on LOADVIEW® SOFTWARE INFORMATION
LOADTEC® is the ONLY load bank manufacturer to offer an entire comprehensive software package with these powerful
features combined.

† OPTION 9-RD: HIGH SPEED RESPONSE (HSR) SOFTWARE MODULE (REQUIRES OPTION 8)
The High Speed Response Software Module (HSR) is utilized to determine source (generator) response to block load
events captured using high speed data acquisition. The sampling period for the HSR software is 60 cycles pre-event,
and 60 seconds of the actual event. Utilizing a logging rate of 8 Khz (1/cycle), the sampling rate is 160/cycle @
50Hz. The total high speed samples can be displayed and printed in a tabular format or a graph with each value
displayed as amplitude versus time. HSR Software is a compliment and additional software function that can be
added to the LOADVIEW® Software.
...see more info on HIGH SPEED RESPONSE SOFTWARE
LOADTEC® is the ONLY load bank manufacturer to offer a High Speed Response Software Event Capture System for banks.

† OPTION 10-RD: 90° VERTICAL EXHAUST DEFLECTOR BOX
All LOADTEC® Radiator/Duct Mounted Load Banks standardly discharge the engine radiator's exhaust air
horizontally. The 90° Vertical Exhaust Deflector Box option directs the exhaust airflow vertically to discharge at a 90°
deflection. Depending on the size of the radiator mounted load bank and the optional vertical deflector box, the
deflector is either installed on the load bank at the factory or shipped on a separate pallet for field installation (by
others). This exhaust deflector box is painted to match the load bank it is supplied with.

† OPTION 11-RD: Fixed Louver Option
[IN LIEU OF STANDARD SCREEN GUARDS]
All LOADTEC® Radiator/Duct Mounted Load Banks are provided in a NEMA 3R Outdoor Weatherproof Configuration
which meet U.L.® and NEMA construction standards. However, certain specifications, engineers, and/or inspectors
desire to achieve an even higher level of weatherproofing where a radiator mounted load bank installation is concerned.
For these extraordinary requirements, the fixed louver option offers extra weatherproofing and is installed on the load
bank at the factory before shipment in lieu of the standard safety screen guards provided. The fixed louver option also
offers safety protection to keep hands out and personnel safe from electrical components. The fixed louver panel is
painted to match the load bank it is supplied with.

† OPTION 12-RD: SPECIFICATION COMPLIANCE
LOADTEC® offers the availability of creating special and unique custom load bank solutions to meet extraordinary
specifications supplied for a particular site or project. LOADTEC's® engineering department will review your
specification and advise if we can offer possible solutions to special requirements and/or uncommon requests.
LOADTEC® is the ONLY load bank manufacturer to offer the capability to add custom/specific features through software and
firmware solutions.

MODEL BROCHURE

ELEVATION DRAWING

PROGRAMMABLE DIGITAL
CONTROLLER (PDC)

LOADLINK® DLL Interface
for LabVIEW & WonderWare †

SAMPLE SPECIFICATION

TECHNICAL DESCRIPTION

GENERAL SUBMITTAL

MODBUS RTU RS485
SERIAL INTERFACE†

ADDITIONAL PHOTOS

PROGRAMMABLE DIGITAL CONTROLLER OPTIONAL REMOTE † CONFIGURATIONS
AVAILABLE

NEMA 1 REMOTE SEMI-FLUSH
CONTROL PLATE PDC†
(PROVIDED LOOSE FOR REMOTE
CABINET/SWITCHGEAR MOUNTING)