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

Construction Materials for Special Applications and
Hazardous Areas

Special construction materials can be used to suit
applications like small hand-held portables or salt
water environments. Chromalox load banks can also
be designed and manufactured for hazardous areas.

A Full Range of Instrumentation

Whether the application requires a simple status
display box or data log and download capability,
Chromalox has the right load bank instrumentation
solution.

Alternative Cooling Systems

Water-cooled units can be produced that are ideal
for shipboard applications. Units are available with­out fans for engine radiator mounting.

Stainless steel construction ensures
toughness and corrosion-resistance.

Enclosures protect to IP54 (NEMA 3R)
standards.

Easy-to-use keypad interface minimize
operator error.

Load controllers change load in 1 kW
increments without moving back to zero,
preventing constant spikes.

Fan units designed to keep outer skin
temperature within safe limits.

Industrial casters provide for easy
movement on smooth floors
(available on units up to 500 kW).

Containerized 3.5 mW load bank.

EDU-400 standard model.

103 Gamma Drive Ext.
Pittsburgh, PA 15238
USA

Phone: [phone]
Fax: [phone]

Toll-Free: 1-800-443-2640

email: [e-mail]
www.chromalox.com

Chromalo

x

®

PRECISION HEAT AND CONTROL

© 2002, 2004 Chromalox, Inc.

Eltron Chromalox

Eltron House
20-28 Whitehorse Road
Croydon, Surrey, CR9 2NA, UK

Tel: [phone]
Fax: [phone]

email: [e-mail]
www.chromalox.co.uk

Etirex Chromalox

Route de Château-Thierry
Noyant et Aconin
F-02203 SOISSONS Cedex, France

Tel: [phone]
Fax: [phone]

email: [e-mail]
www.chromalox.fr

Ordering Information for Standard Load Banks

Model

EDU Load Bank Energy Dissipation Unit

EDU 06 3 2 KE 8 Typical Model Number

Code Power/Kilowatt rating

01 100 kW
02 200 kW
03 300 kW
04 400 kW
05 500 kW
06 600 kW
08 800 kW
10 1000 kW

Code Steps

1 1 kW
2 10 kW

Code Mounting

1 Caster Mounted
2 Skid Mounted
3 Trailer Mounted

Code Load Switching Scheme

TG Toggle selector switches
PB Push buttons
KE Keypad mounted on unit
RE Remote control with cord

Code Voltage

1 120 Vac
2 208 Vac
3 208/240 Vac
4 240 Vac
5 240/480 Vac
6 277 Vac
7 380 Vac
8 480 Vac

Code Options

A Multifunction Digital Readout Meter
B Single-Volt Meter with Phase Selection Switch
C Three-Volt Meters
D Single Ammeter with Phase Selection Switch
E 3 Ammeters
F kW Meter
G Control Panel Cooling Fan

Other combinations are available upon request.

PDS LB

Code Options

H Anticondensation Heater

I Load Management Module for 5MW

J Remote Control with 25ft. Cord
K Wrong Voltage Indication
L Camlock Power Connections

M Phase Reversal Switch

N Fan Delay Switch