Model OSW8v Freestanding Load Bank

MODEL BROCHURE

ELEVATION DRAWING

PROGRAMMABLE DIGITAL
CONTROLLER (PDC)

LOADLINK® DLL Interface
for LabVIEW & WonderWare †

SAMPLE SPECIFICATION

TECHNICAL DESCRIPTION

GENERAL SUBMITTAL

ADDITIONAL PHOTOS

STANDARD FEATURES
42600-4000kW @ 480V or 600V, 3Ø, 60Hz
42600-4000kW @ 380-415V, 3Ø, 50Hz
410kW LOAD STEP RESOLUTION
4PROGRAMMABLE DIGITAL CONTROLLER (PDC)
4LCD METERING DISPLAY WITH KW, VM, AM, FM
4NEMA 12 REMOTE WALL MOUNTED PDC ENCLOSURE
4AUTOMATIC LOADING OPERATION*
4REGENERATIVE ABSORPTION CONTROL**
4AUTOMATIC EXERCISE OPERATION***
4BASE LOADING & MANUAL LOADING OPERATION
4SELF-CONTAINED SINGLE COMPLETE SYSTEM

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. A 2 wire "START" control for the generator is required to accomodate this function.

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 a complete, self-contained system providing the means of 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.
4INSTALLATION: The load bank is easily installed outdoors in spaces such as rooftops, equipment yards, or other limited access areas.
Installation requires a concrete pad or structural framework for mounting. Indoor installation require additional considerations for ducting and
static pressure restrictions. The load bank is standardly supplied with a Nema 12 wall mounted Programmable Digital Controller (PDC) for
remote mounting in close proximity to the connected source. 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 lifting eyes, forklift tubes, stainless exterior hardware, and
hinged access doors for connection & control compartments.
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. They are then mounted in small trays that are easily removed in the field and serviced by a
single individual. 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 (4) direct drive airfoil propellers using (4) TEFC motors with a disconnect and overload
relay. These motors contain sealed bearings that do not require lubrication or maintenance during the life of the motors.
4PROTECTIVE CIRCUITS: The load bank is protected with fusing for each load section and control circuit. It is also provided with an
airflow and temperature sensor to disconnect the load bank on a failure condition. 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 (PDC) CONFIGURATIONS AVAILABLE

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

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

SOUND DATA

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)
(STANDARD)

INTEGRAL
(LOCALLY-MOUNTED) PDC†
(MOUNTED BEHIND SMALL
WEATHERPROOF HINGED DOOR
LOCATED ON LOAD BANK
ACCESS DOOR)

OPTIONAL ITEMS

† OPTION 1F: NEMA 3R REMOTE WALL MOUNTED PROGRAMMABLE DIGITAL CONTROLLER (PDC)
[IN LIEU OF STANDARD NEMA 12 STANDARD REMOTE WALL ENCLOSURE]
A NEMA 3R (Outdoor Weatherproof) Wall Mounted Programmable Digital Controller (PDC) is provided as a substitute
[in lieu of] for the standard NEMA 12 Remote Wall Mounted Enclosure.
...see more info on NEMA 3R REMOTE PDC

† OPTION 2F: INTEGRAL (LOCALLY MOUNTED) PROGRAMMABLE DIGITAL CONTROLLER (PDC)
[IN LIEU OF STANDARD NEMA 12 REMOTE WALL ENCLOSURE]
The Programmable Digital Controller is integrally mounted in the load bank inside a dedicated hinged & gasketed
access door connected to a main access door of the enclosure. This integrally-mounted PDC is provided as a
subsitute [in lieu of] for the standard NEMA 12 Remote Wall Mounted Enclosure
...see more info on INTEGRAL PDC

† OPTION 3F: NEMA 1 SEMI-FLUSH "LOOSE" REMOTE PROGRAMMABLE DIGITAL CONTROLLER (PDC)
[IN LIEU OF STANDARD NEMA 12 REMOTE WALL ENCLOSURE]
A NEMA 1 Semi-Flush Control Plate Programmable Digital Controller (PDC) is provided as a substitute [in lieu of] for
the standard NEMA 12 Remote Wall Enclosure. 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 4F: 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 NEMA 12
Remote Wall Mounted Programmable Digital Controller. 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 can also be cominbed with OPTION 2 to achieve both an integral (locally) mounted PDC and a remote
PDC in either NEMA 1, NEMA 12, or NEMA 3R Remote configurations.

† OPTION 5F: 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 6F: 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 7F: 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 8F: 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 9F: 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 10F: TOUCHCOMMAND OPERATOR INTERFACE PANEL (OIP) DIGITAL CONTROLLER SYSTEM
[IN LIEU OF PROGRAMMABLE DIGITAL CONTROLLER SYSTEM (PDC)]
The TouchCommand OIP Digital Touch Screen Controller system is primarily designed for [and included standard
with] our portable load bank product line. However, specific conditions and sites (i.e. data centers) call for the
requirements and functions of a more advanced "test module" that fits the capabilities [and is better suited for] of the
hand-held Touch Screen Controller System. These special sites require additional functions and operator displays
that are included with the TouchCommand system. The TouchCommand system option is offered as a substitute [in
lieu of] for the standard Programmable Digital Controller (PDC) system.
...see more info on TOUCHCOMMAND CONTROLLER
LOADTEC® is the ONLY load bank manufacturer to offer remote touch screen hand-held controllers for load banks.

† OPTION 11F: SOUND ATTENUATING BAFFLE
Sound Attenuating Baffles are available for effectively reducing the sound dBA level at specific distances of measure.
The approximate dBA reduction for LOADTEC® Load Banks at 1M is 15dBA with the sound attentuating baffles option
installed (ambient noise must be taken into consideration when sound calculations are performed). The Sound Attenuating Baffle
option is provided with a separate exhaust baffle that ships independently of the load bank for field installation (by
others). Sound Attenuating Baffles can be installed in the field for specific aging load bank models already installed,
however modified louver assemblies must be first retrofitted in the field (by others).
...see more info on SOUND ATTENUATING BAFFLES
LOADTEC® is the ONLY load bank manufacturer to offer active sound attenuation solutions for load banks.

† OPTION 12F: 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.