Titan
Resistive/Inductive
937.5KVA, .8PF
1000KVA, .8PF
1125KVA, .8PF
1250KVA, .8PF
1500KVA, .8PF
Titan Load Bank
Very high capacity electrical
loads, typically in excess of 10MW, for testing, maintenance
and performance analysis of large AC power systems can be formed
using the Simplex Titan Load Bank as a building block
element. The Titan Load Bank is a self-contained, semi-portable
unit providing resistive and inductive loads to 15KVA, .8 power
factor, to 600VAC. It can be applied singly or in systems of
multiple units paralleled to achieve virtually any total capacity
desired. Load application and power factor control is step adjustable
in any increment/multiple of 25KW and 18.75KVAR.
The Titan Load Bank is totally self-contained, freestanding
and semi-portable. The Titan consists of air-cooled resistive
and inductive load elements, magnetic contactors for load control,
branch circuit fuse protection of load elements, forced-air cooling
system, 120V control power supply, malfunction detection system,
main load terminals, unit control panel, provision for remote
control panel.
The Titan is weatherproof and intended for outdoor use.
A marine version is available for use in shipyards. The Titan
is suitable for portable use or permanent installation. It can
be moved using a forklift or a crane, or it can be mounted on
a trailer. Trailer installations can accommodate multiple units,
within the weight capacity of the trailer.
Applications
Manufacturers of large electric
generators and high capacity distribution apparatus
Utilities, for testing of generators, standby engine-generators,
transformers, switch-gear
Shipyards for testing and maintenance of shipboard power systems
Research and development labs for design and testing of electrical
power systems
Features
Self-contained load and control
system
Utilizes the UL Recognized, “Powr-Web” load element
Branch circuit fuse protection of load elements
Inductive load elements
Color coded and numbered wiring; power wiring 150°C
Plated bus bar
Suitable for use in a high capacity power system which has a
high available short circuit current
High interrupting capacity, current limiting type branch circuit
fuse protection of load elements
Magnetic contactor control of load circuits
Resistive and inductive loads controlled separately to permit
power factor variation
Copper bus power terminals
Integral cooling fans (2)
Blast air cooling of resistive load elements
Filtered air ventilation of inductive load elements
Local, unit control panel supplied standard
Remote control terminals supplied standard, remote control panel
optional
120V control circuits
Automatic over temperature protection
Continuous duty
NEMA3R, weatherproof, outdoor type enclosure
Automatic interior space heater activated when the Load Bank
is not use to prevent the formation of condensation which can
cause corrosion and deterioration of components
Capacity 937.5KVA, 1000KVA, 1125KVA, 1250KVA, 1500KVA; Resistive/Inductive, .8 power factor Voltage Single 450-480V Single 600V Dual 208-240/416-480V (load rating developed at 240/480V) Dual 480V/600V (100% rated at 600V, 85% rated at 480V) Frequency 50-60 Hertz or 50-60/400 Hertz Connection 3-phase, 3-wire, plus ground Fan/Control Derived internally, from main load bus (from power source under test). Cooling fans operate at 3-phase line voltage. Control circuits operate at 120V AC via isolation transformer. Ambient Air Temperature 120°F Max. Air Temperature Rise 390°F Max. Fault Rating 200,000 AIC Airflow 25,000 CFM Duty Cycle Continuous Dimensions and Key Features Diagram Stationary Load Banks: Applications and General Specifications, Features and Options, and Engineer’s Specifications |
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
Inductive Load
Elements
These discrete iron-core load elements are non-saturable, air gap calibrated, air cooled devices and field replaceable. Elements may have a temperature sensor embedded in the windings used to detect element overheating and activate the malfunction detection system which disconnects the load elements and activates an alarm. Standard elements are varnish coated; epoxy coatings are available for severe environments.
Specifications
Tolerance: 5%
Maximum Harmonic Distortion: 1%
Power Factor: .05
Insulation: 220°C
Cooling: Air
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.
Principle Systems and Components
Load Control
Load is controlled incrementally, in steps, to permit a wide adjustment of applied load, in any multiple or 25KW and 18.75KVAR. The operator has the capability to apply or remove load sequentially, using the individual load step toggle switches, or in preset blocks, using the master load switch. Power factor variation is possible by adjusting the ratio of resistive to inductive load.
Anti-Condensation Devices
To prevent the formation of
condensation that can corrode and deteriorate components when
the module is not in use, the Titan is equipped with automatic
space heaters activated by a humidity controller.
(.8pf) |
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Cooling
The Titan Load Bank is equipped
with a forced air cooling system which cools the resistive load
elements and ventilates the inductive load elements compartment.
Air for ventilating of the inductive element compartment is filtered
to remove dust. The system consists of two fans, each as follows:
- Motor direct drive, cast aluminum propeller fan, shrouded for
high efficiency
- 5HP, TEFC, 3-phase, 1800RPM motor
- Circuit breaker combination motor starter with overload relay
Malfunction Detection System
The Titan Load Bank is equipped
with a malfunction detection system which provides automatic
load disconnect and alarm on sensing of an abnormal operating
condition. The system includes the following:
- Cooling air intake temperature switch, set at 120°F, to
sense recirculation of load bank hot exhaust air or an ambient
temperature above the rating of the load bank.
- Cooling air exhaust temperature switch, set at 75°F above
maximum rise at maximum ambient, to sense restricted cooling
airflow, recirculating air, loss of airflow.
- Air pressure switch to sense for positive cooling airflow.
- Under frequency relay to protect inductive load elements
- Temperature sensors embedded in windings of load inductors
to sense inductor over temperature
- Automatic load disconnect/lockout circuit
- Alarm indication lights
