
Chromalo
Load Bank Energy Dissipation Units
Chromalox
®
Load Bank Energy Dissipation Units
Description
Chromalox load banks provide durable, precise energy control for applications requiring
anywhere from 1 kW of power to multi-megawatt capacity. All units are subjected to a highvoltage flash test, an insulation resistance check, and a simulated load test. Chromalox load
bank energy dissipation units hold resistances within ±5 percent of hot operating resistance.
The units are fabricated from weatherproof stainless steel for durability and feature overtemperature protection with fan interlock. Thermally protected fan motors are easily accessible.
Electrical connections and components are protected by hinged, lockable doors or bolt-on
panels, depending on unit type.
Applications
■
Factory or field testing diesel generators
■
Braking resistors for traction or inverter drives
■
Base loading of remote or standby power plants
Load Bank Dimensions and Weight
Model
Number
Length Width Height lb
Approx.
Weight
Dimensions
(in.)
EDU-01 100 45 34 26 450
EDU-02 200 47 41 33 550
EDU-03 300 49 45 41 890
EDU-04 400 55 45 65 1,110
EDU-05 500 55 49 73 1,215
EDU-06 600 51 65 71 1,775
EDU-08 800 79 69 83 2,000
EDU-10 1,000 79 69 83 2,210
■
Battery discharge testing
■
UPS testing
■
Marine applications
EDU-100 standard model.
kW
PRECISION HEAT AND CONTROL
®
x

Standard Options
In addition to these standard options, our engineers
will be glad to discuss adding any features not listed
below.
Remote Control
Control keypad on a 25 m cable enables load application from inside generator room.
Master-and-Slave Configuration
Links up to 10 load banks
of any size together to
form a much larger
total load. Individual
load banks can still be
used discretely, each
retaining its 1 kW
switching resolution.
This is ideal for applications where multiple,
small loads are tested
but a single large load may
need testing periodically.
Designs for Special Voltages, Multiple Voltages, and
Various Frequencies
Designed for voltages from 12 Vdc to 780 Vac or Vdc.
Chromalox load banks can also accommodate most
voltage combinations within a single load frame.
Units are available for dc, 50 or 60 Hz ac, and 400
Hz ac frequencies.
Benefits
Construction
The stainless steel construction of a Chromalox load
bank provides strength and corrosion-resistance.
Alloy steel sheathed tubular heating elements stand
up to harsh weather, including heavy rain. And all
electrical enclosures are protected to IP54 requirements (NEMA 3R).
Single or multiple self-powered fans provide cooling
airflow to hold outer skin temperature within safe limits. Units up to and including 500 kW
are designed for horizontal airflow, while larger units, up to
1,000 kW, utilize a vertical
airflow.
For applications requiring
mobility, Chromalox fits units
up to and including 500 kW
with casters for easy positioning on smooth floors. Larger
units are skid-mounted for
easy transportation.
Controls
Chromalox load banks are controlled by a multistage, contactor-based system that is an integral
part of the load frame. The controls are painstakingly engineered to provide the utmost precision
and protection:
■
Easy-to-use keypad enables operator to enter the
load before pressing an "enter" key to actuate the
contactors.
■
Loads can be progressively applied in 1 kW increments up to full load, preventing spikes.
■
Load spikes can be induced if the test
requires.
■
High limit controls for temperature and
low limit controls for airflow helps
ensure protection from damage due
to incorrect use.
■
Can be UL-listed for U.S. market or CEmarked for European markets.
Hand-portable 128 kW dc
load bank for low-power
UPS or Telecoms testing.
Trailer-mounted EDU-100T portable load bank used for field-testing
and commissioning generators.
IP