Large
Portable
dynaMITE
410KW
308KW
205KW
dynaMITE 400
Portable Load Bank
The Simplex dynaMITE 400
is a high capacity, low profile, compact-design Portable Load
Bank especially well suited for field use where it is easily
transported by a service truck.
The Simplex dynaMITE 400 is a large capacity, high performance
Portable Load Bank designed to provide the manufacturers, distributors
and users of large AC generators and UPS systems with sophisticated
testing capability.
The dynaMITE 400 provides 410KW of resistive load at both 240V
and 480V, 3-phase. It can be applied at any AC voltage to 480V
AC, 50-60-400 Hertz, single or 3-phase.
The dynaMITE 400 is a totally self-contained testing system.
It includes all resistive load elements, load control devices,
load element circuit protective devices, connection cable set,
cooling system, malfunction detection system, control power supply
and test instrumentation.
Principal Sub-Systems
Load Elements: Simplex “Powr-Web” chromium
alloy, open wire, continuously supported, power resistor.
Load Control: 3-Pole magnetic contactors
Load Element Circuit Protection: Branch circuit fuses.
One set of fuses each 50KW branch. Fuses are current limiting
type, 200,000 AIC, 600V, enabling safe use of the load bank with
large generating systems.
Cooling System: 3-phase, direct-drive fan, 10,000 CFM.
Cast aluminum air foil type, shrouded propeller fan.
Malfunction Detection System: Protection against fan failure,
high exhaust air temperature, high intake air temperature, overvoltage
and fan reversal.
Control Power Supply: Dual voltage control power transformer
with supply power switchable to internal (generator) or external.
Test Instrumentation: 3½”, +/- 2% accuracy
panel meters.
Remote Control: Load control switch panel removable for
remote operation. Connection plugs will accept optional remote
control cables.
Connection: 12’ connection cable set including 3-phase
power cables, ground cable and external control power cord, stowed
behind hinged door in rear compartment.
Features
Low profile, compact design
High capacity, dual voltage
Fine load step resolution
Toggle switch load control
Utilizes the UL Recognized “Powr-Web” load element
Branch circuit fuse protection of load elements
Operator selectable fan/control power-source:
Internal Power - Fan and control circuits powered internally, does not require external power
External Power - Fan and control circuits powered from external 3-phase outlet or other external source
Integral high capacity cooling fan
3-phase connection cable set stowed in cable compartment
Compact, rugged, portable enclosure
Double wall construction for cool exterior
Control compartments thermally insulated from load elements
Hinge-open control panel doors
Comprehensive automatic malfunction detection system with alarm lights
Test instrumentation
Remote control capability
Control Panel
AC instrumentation, 3½”, +/- 2% accuracy panel meters:
AC voltmeter with 3-ph. transfer switch
AC ammeter with 3-ph. transfer switch
Frequency meter
Load step control toggle switches
Master load control toggle switch
Control power switch
Control power voltage selector switch
Operational indicator lights:
Normal Operation
Overvoltage
Fan failure/over temperature
Capacity 410KW at 240/480V, 3-ph. 308KW at 208/416V, 3-ph. 205KW at 240V, 1-ph. Voltage Dual: 240/480V AC, 3-ph. Operational at any voltage to 480V AC max., 1-ph. or 3-ph. Frequency 50, 60, 400 Hertz Load Step Resolution 5KW Fan/Control Power 230/460V, 3-ph., 60Hz 190/380V, 3-ph., 50Hz Switchable internal (generator) - external 230/460-115V control power transformer internal to Load Bank 15' external power cord Airflow 10,000 CFM Connection 3-wire plus ground Fault Rating 200,000 AIC Insulation Rating 600V, 302°F Duty Cycle Continuous Temperature Rating 120°F max. intake 290°F max. exhaust Net Weight 800 lbs. Dimensions 32” W x 48” H x 60” D Enclosure NEMA-1 drip proof Options Instrumentation: Kilowatt Meter, 3½”, 2%, to meter standard instruments 7310 ION Digital Power Meter Discrete Digital Panel Meter Data Acquisition System - Windows 95/Excel based, with laser configuration output. Includes 3710ACM or 3720ACM Digital Power Meter, computer cables and software. For use with buyer supplied computer. Four 1KW Load Steps Remote Control Cables Complimentary Load Banks to increase capacity: Auxiliary resistive Load Bank with 50 KW load step resolution, dual voltage: 400-500-600KW. Auxiliary inductive Load Bank; 300 KVAR, 3.75 KVAR load step resolution, dual voltage. Total load current transformer bank. Permits system of Load Banks to be metered from panel of dynaMITE 400. Centralized control of system of Load Banks Weatherproof Cover NEMA-3R weatherproof enclosure. Includes hinge-open protective door with safety interlock over air-exhaust outlet. Highway Trailer and optional cable storage reels, cable connection panels. Click here for a complete list of options available for Large Portable Load Banks. Sales Bulletin Dimensions and Key Features Diagram |
Powr-Web Load
Element
Simplex Load Banks utilize the
UL Recognized, “Powr-Web” load element. The “Powr-Web”
is an advanced design, air-cooled power resistor specifically
designed for application to load bank systems. The “Powr-Web”
is conservatively operated at half the maximum temperature rating
of the alloy and features a short-circuit-safe design based on
continuous mechanical support of the resistor by high temperature,
ceramic clad stainless steel rods. The “Power Webs”
are assembled into discrete trays which are assembled in a vertical
“stack.” Each tray in the “stack” is independently
serviceable without disturbing adjacent trays.
Ratings
3333W at 120V
4170W at 139V
8333 watt 240/480V
16,777 watt at 480V
Specifications
Alloy: FeCrAl
Max. continuous temp. rating: 1920°F
Maximum operating temperature as applied in Load Bank: 1080°
F
Cool down time from operating to ambient temperature: 10 seconds
Construction
Calibrated to specific
ohm value
Welded lugs on each end
All load elements are continuously supported by vibration resistant,
ceramic clad, stainless steel throughrods
Branch Circuit Fuse Protection
The load of a Resistive Load Bank consists of a dense array of open, uninsulated power resistors mounted within a cooling air stream. Since the elements are electrically live, it is possible for a foreign object to penetrate the element array and create a short circuit of adjacent elements or a short to ground. Since the elements are densely packed, it is possible for a short circuit, once started, to rapidly propagate through the entire element array. As a Load Bank represents a relatively large amount of power concentrated within a relatively small volume, a self-propagating, cascading short circuit would have catastrophic results.
Simplex virtually eliminates
the dangers of short circuit through the use of branch circuit
fuse protection of the load elements. Per NEC 110-10, protective
devices shall clear a fault without “extensive damage”
to the circuit components. A Simplex Load Bank is divided into
branch circuits of not more than 50 KW each.
DYNAMITE 400 PORTABLE LOAD BANK CAPACITY DETAIL |
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DYNAMITE 400 PORTABLE LOAD BANK LOAD STEP DETAIL |
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