Stationary
Jupiter
up
to 4500KW
Jupiter Load Bank
The Jupiter Load Bank
is a completely self-contained, freestanding unit which includes
all resistive load elements, load control devices, load element
branch circuit fuse protection, main load bus and terminals,
cooling system, control power supply, unit controller and malfunction
detection system and NEMA type enclosure.
Ultra-high capacity load testing of generators or electric dynamometer
testing of large engines and turbines is achieved with the Simplex
Jupiter Load Bank. The unit capacity of the Jupiter is
4500KW, resistive, unity power factor. Jupiters may be used singly
or in systems of multiple units which yield total capacities
of tens or hundreds of megawatts.
The Jupiter is a single or dual voltage Load Bank suitable
for all common 60 and 50 Hertz voltages up to 600V. Loads are
stepped in any increment of 50KW, or, optionally, in fixed steps
to 5KW or infinitely variable.
Cooling System: Using an ultra high volume forced air
cooling system, up to 80,000CFM
Load Control: Master load toggle switch and load step
toggle switches
Jupiter indoor configuration.
Exhaust hood required for exterior use.
Features
Self-contained load and control system
Utilizes the UL Recognized, “Powr-Web” load element
Branch circuit fuse protection of load elements
Color coded and numbered wiring; power wiring 150°C
Plated bus bar
Capacity 4500KW; Resistive, 1.0 power factor Voltage All common 3-phase 60 and 50 Hz voltages: 60 Hertz: 208V, 220V, 240V, 416V, 440V, 450V, 460V, 480V, 575V, 600V 50 Hertz: 190V, 200V, 208V, 380V, 400V, 416V Frequency 50, 60 Hertz Load Steps 50 KW resolution standard 1-5-10-25KW resolution available Fan/Control Internal, from load bus. Control circuits at 120V via transformer. The cooling fan operates at 3-phase line voltage. Load control circuits and fan motor control operate at 120V. Control circuits are fused. Control circuit fuses are 100,000 A.I.C., 600V rated. External, 480/240V, supply for humidity controller, when ordered. Cooling Forced air, vertical airflow, top exhaust. 3-phase, TEFC motor driving cast aluminum fan blade. Circuit breaker combination motor starter. Airflow 80,000 CFM Duty Cycle Continuous Dimensions and Key Features Diagram Stationary Load Banks: Applications and General Specifications, Features and Options, and Engineer’s Specifications |
Modular enclosure design with separate and isolated control and power sections
NEMA-3R, oversize control section with generous cable connection space
Vertical airflow, exhausts hot air above level of personnel and away from buildings, pavement etc.
Comprehensive overload, short circuit and malfunction protection
Slide-out, tray mounted load elements
Highly standardized, based upon extensive product line spanning from 5KW to 3MW
Principle Systems and Components
Internal, from load bus. Control circuits at 120V via transformer. The cooling fan operates at 3-phase line voltage. Load control circuits and fan motor control operate at 120V. Control circuits are fused. Control circuit fuses are 100,000 A.I.C., 600V rated. External, 480/240V, supply for humidity controller, when ordered.
Load Elements
Simplex “Powr-Web” open wire, helically wound, chromium alloy, thermally derated to 60%. 5% tolerance, 2% balance, .995 p.f.
UL Recognized.
Load Control
Branch circuit contactors, each 50 KW step. Contactors have enclosed silver surfaced contacts, 120V coils; electrically operated and electrically held.
Element Circuit Protection
Branch circuit fuses, each 50KW branch circuit, 70A, 200kAIC, current limiting type.
Temperature
Maximum ambient temperature: 125°F
Exhaust rise: RISE = KW X 3000/CFM (note: as airflow is not laminar, exhaust air temperatures are not equal at all points at the plane of air exhaust. Some parcels of air may reach approximately 575°F before mixing.)
System Protection
Fan failure, high exhaust temperature, high intake temperature; lockout and alarm.
Modular enclosure consists of three parts:
1. NEMA-3R rainproof power section including load elements and cooling fan
2. NEMA-3R control section, thermally and electrically isolated from power section
3. Exhaust hood. Mounts atop power section. Vertical flow with rain separators. Hood may be deleted and a duct flange provided for indoor applications where air is exhausted through a duct to the outdoors.
All panels for access to serviceable components are hinged doors with stainless steel hinges and lockable latches. All exterior fasteners are stainless steel.
The Load Bank enclosure is of double wall construction for cool exterior and thermal isolation of the load elements. Cooling airflow through the enclosure is vertical with cold air intake at the bottom and hot air exhaust out the top. Intake and exhaust openings are screened. All parts of the enclosure are abrasive blasted or chemically etched, primed and finished with a color as specified. The exhaust hood which is exposed to high air temperatures is unpainted galvanized steel.
Power Wiring
150°C insulated; color coded.
Control Wiring
105°C, color coded and/or numbered.
Power Connection
Plated bus bar within an oversize terminal junction box.
