Avtron K675A
Resistive Permanent Load Bank - 150 to 500 KW
Testing Your Emergency Standby
Generator with a Load Bank Means
Reliability When it Matters Most.
Key Features
•Outdoor Installation
•Heavy Gauge Aluminized
Steel Construction
•Built-in Forklift Channels
•Fully Supported Load
Elements
•No Cool Down Period
Required
•Remote Operator Controls
The Avtron Model K675A Load Bank is designed for
permanent outdoor installation for 150 to 500 KW load.
The Avtron K675A load bank is designed and built to incorporate the latest state-of-the-art
load bank features. It requires no cool down period after load is dropped. The contactors
are housed in a thermostatically controlled heated enclosure for protection against condensation related problems. The K675A load bank is ideal for high power resistive loading of AC
generating systems.
The load bank contains resistive elements and a blower motor in a rigid structure of formed
heavy gauge aluminized steel. Designed for out­door installation, the load bank utilizes a fixed
louver on the exhaust opening to protect the motor and resistive elements from the weather.
The K675A load bank is available with ratings of 150 to 500 KW. It is provided with single voltages of 208 or 480 and dual voltages of 240/480, with a load step resolution of either 5 or 50 KW.
The Avtron Advanced Digital Monitoring System (ADMS™) is available as an option on the K675A.
It provides faceplate digital display of Volts, Amps, Frequency, and KW. The Communicator
EXT™ Data Logging Software allows Real Time Data Acquisition and trending of all meter
parameters from your Laptop PC or PDA. An Infrared/USB interface cable is included for
“Plug and Play” convenience.
•Easy Operation and
Maintenance
Superior Avtron quality combined with
simple operation and maintenance will
provide years of trouble free service.
Avtron’s extensive line of Load Bank and
Industrial Resis­tor Products are solid
performers used throughout the world.
For total technical support or additional
information, please contact Avtron at
(216) 573-7600 or LBsales@Emerson.com.
Quality System Certified to ISO 9001
K675A 300 KW
Permanent Resistive
Avtron Load Bank.
Avtron K675A
Resistive Permanent Load Bank - 150 to 500 KW
Specifications subject to change without notice.
Construction
The load bank enclosure is constructed of
heavy gauge aluminized steel. A fixed louver
is provided on the exhaust opening. The permanent base has built-in forklift channels and
is designed for outdoor mounting on floor,
roof, or concrete pad. Contactors are protected in a thermostatically controlled heated
enclosure.
Resistor Elements
The fully supported Helidyne™ resistive
elements are designed by Avtron and
manufactured of corrosion resistant
chromium alloy wire.
Control Power
The unit requires control power of 120 volts,
single phase, 60 Hz. (Control power transformer optional).
Load Capacity Ratings: (3 phase, 60 Hz)
Available Load Step Resolution: 5 or 50 KW
Rated
KW
240/480
VAC
150
480 VAC
Load Bank Weight (approx.)
208 VAC
1100 lbs. [499 kg]

200


250

Options

300


350
•SIGMA™ Network Control

•ADMS™ Digital Metering (V, A, KW, Hz)
with Communicator EXT™ Data Logging
Software

400


450
500



•Meter and Control Panel Enclosure

•Control Power Transformer
NOTE Other voltages and KW ratings are available. Designs
for international 50/60 Hz voltages or custom DC designs
are also available. Consult factory.
Cooling
•Automatic Load Step Controller
•1 KW Load Step Resolution
46.50 [1181.00]
58.00 [1473.00]
The resistive elements are air cooled by a selfcontained 2 or 5 HP blower. Blower horsepower varies with load bank maximum KW.
Controls
The 19" rack-mounted control panel is provided loose for remote mounting (control
panel enclosure optional). Controls include a
POWER ON-OFF switch, a CONTROL POWER
light, BLOWER ON-OFF push buttons with a
BLOWER POWER light and an AIR FAIL light,
MASTER LOAD ON-OFF switch and individual
load step ON-OFF toggle switches.
AIR IN
SCREENED
AIR OUT
SCREENED
INPUT BUS
CONNECTIONS
CONTROL POWER
CONNECTIONS
61.00 [1550.00]
0.750 [19.00]
DIA - 4 HOLES
42.00
[1066.00]
13.00
[330.00]
22.00
[559.00]
7.00
[178.00]
BOTTOM VIEW
of load bank
Protection
The K675A features branch circuit fusing on
all load steps and is equipped with an exhaust
temperature sensor and differential air pressure switch. The switches are electrically interlocked to remove the load if the air flow is
not sufficient to produce proper cooling.
2.25
[57.00]
Emerson Network Power
Avtron • 6255 Halle Drive, Cleveland, Ohio 44125, U.S.A.
216-573-7600 • FAX: 216-573-5953 • LBsales@Emerson.com
EmersonNetworkPower.com/loadbank
(ALLOW 36" MIN
CLEARANCE FOR
MAINTENANCE)
FAN POWER
CONNECTIONS
Optional Digital Metering
Avtron Advanced Digital Monitoring System
(ADMS™) is available as an option for display
of Volts, Amps, Frequency, and KW. ADMS™
also includes Communicator EXT™ Data
Logging Software.
REMOVABLE
ACCESS PANEL
LOUVERED
PANEL
51.00
[1295.40]
36.00
[914.00]
MIN
15.25
[388.00]
27.00
[686.00]
INTAKE END VIEW
CONDUIT ENTRY SIDE
(SEE BOTTOM VIEW)
2.25
[57.00]
LOUVERED PANEL
2.00
[51.00]
6.00 [152.00]
CONDUIT ENTRY AREA
PRIMARY CONDUIT
ENTRY AREA FOR
STRAIGHT THROUGH
LOAD WIRING
CONDUIT ENTRY AREA
OPTIONAL CONDUIT
ENTRY AREA, CONSULT
AVTRON TO REVIEW
INSTALLATION
BOTTOM VIEW
36.00 [914.00]
EXHAUST END VIEW
All dimensions are in inches [millimeters].
Emerson. Consider it Solved and Emerson Network Power are trademarks of Emerson Electric Co.
or one of its affiliated companies. All the other marks are the property of their respective owners.
Communicator EXT™ is a trademark of Electro Industries/GaugeTech. ADMS™ and Helidyne™ are trademarks of Avtron. SIGMA™ is a trademark of NJ Froment & Co. Ltd. Specifications subject to change
without notice.
©2015 Emerson Network Power Bulletin 295• Rev. L