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The Simplex Load Cube R is an ultra-large capacity, fully portable, resistive/reactive Load Bank System. It is intended for field use in testing, maintenance and performance proving of large generating systems. The Load Cube R is rated 2500kw, 1875kvar at 400-600v commercial AC voltages. It is typically used to test large diesel generators, turbines, paralleled generators and shipboard generators. The Load Cube R utilizes digital load control for direct access of load values, block transitions, and user programmable automation. A selection of digital power meters and data acquisition software is available.
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Load Elements
System Controls
| • | PLC based digital load control. |
| • | Remote operator interface terminal and user programmable automatic test routines. |
Cooling
| • | Approximately 60,000 CFM divided by two cooling fans. |
| • | Power operated intake and exhaust louvers with protective screen. |
| • | Forced air cooling with horizontal airflow. |
System Protections
| • | Sensors, alarms (alarm message on remote operator interface terminal), lock-outs as appropriate, for the following: fan failure, high exhaust temperature, high intake temperature, high interior temperature (sensed at three points). |
| • | Load Circuit Protection: branch circuit fuses. One set of fuses each 50KW branch. Fuses are current limiting type, 200,000 AIC, 600V, enabling safe use on large generating or UPS system. |
Load Control
| • | 3-Pole magnetic contactors. |
Connections
| • | Control Wiring: 105°C, color coded. |
| • | Power Wiring: 150°C XLP color-coded. |
Power
| • | Control Wiring: connection to plug-in connectors located within recessed side well. |
| • | Control Power Supply: Dual voltage control power transformer with supply power switchable to internal (generator) or external. |
| • | Power cable connection behind hinge-up door. Cables connect to full rated copper bus bar. |
Enclosure
| • | Type 3R weatherproof construction suitable for all-weather transport and use. |
| • | Portable, self-contained: lifting eyes, forklift channels, heavy skid base, and suitable for direct transport by standard flat bed truck. |
| • | Four-sided service access via hinged doors with lockable, flush latches. |
| Load Type |
Reactive / Resistive |
| Capacity |
3125KVA, 2500KW Resistive, 1875KVAR Inductive |
| Power Factor |
0.8 |
| Voltages |
480v, 600v, 690v |
| Frequency |
50, 60 Hz |
| Load Steps |
5KW, 3.75KVAR |
| Load Connection |
Cam-Type
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| Load Control |
Manual toggle switches / Remote operator interface terminal and user programmable automatic test routines
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| Cooling Airflow |
Horizontal, 60,000 CFM |
| Fan/Control Power |
Internal, from load bus. Load control circuits and fan motor control operate 120V via transformer. Control circuits are fused. The cooling fan operates at 3-phase line voltage. |
| Duty Cycle |
Continuous |
| Portability |
Fork lift channels, trailerable |
| Weight |
25,000 lbs |
| Dimensions |
96.5″W x 110.25″H x 130″D |
| Networkable |
Yes |
| Outdoor Suitable |
Yes |
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