Chromalox EDU-01, EDU-02, EDU-03, EDU-04, EDU-05 User Manual

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