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Low to medium capacity load testing of generators, periodic reliability exercise of standby generators, regenerative power absorption of inertial motors with reverse power protection of generators and other Load Bank applications are achieved with the Polaris load bank.
The Polaris Load Bank is suitable for all common 50-60-400 hertz voltages up to 600V.
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General
Load Elements
| • | Simplex Powr-Web chromium alloy, open wire, continuously supported, power resistor. |
| • | UL Recognized. |
System Controls
| • | Remote or local controls. |
| • | Control compartments thermally insulated from load elements behind bolt-on panel. |
| • | Indicator lights: Normal Operation and Cooling Failure. |
Cooling
| • | Integral forced air cooling system. |
| • | 3-phase, direct drive motor. |
| • | Casts aluminum air foil type, shrouder propeller fan. |
| • | Horizontal airflow - cool air intake from one side, hot air exhaust out the other side. |
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. |
| • | 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
| • | Master load toggle switch and load step toggle switches. |
| • | 3-pole magnetic contactors. |
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.
Select power source at the time of purchase. |
Load Connection
| • | Hard-wired to load bank main load power distribution block. |
Connections
| • | Control Wiring: 105°C, color coded. |
| • | Power Wiring: 150°C XLP color-coded. |
Enclosure
| • | Low profile, rugged, portable design. |
| • | Double wall construction for cool exterior. |
| Capacity |
5KW-150KW |
| Load Type |
Resistive |
| Power Factor |
1.0 |
| Voltages |
All common 3-phase 50 and 60Hz:
60 Hertz: 208V, 220V, 240V, 416V, 440V, 450V, 460V, 480V, 575V, 600V
50 Hertz: 190V, 200V, 208V, 380V, 400V, 416V |
| Frequency |
50-60-400 Hz |
| Load Steps |
50KW resolution |
| Duty Cycle |
Continuous |
| Cooling |
Forced air, horizontal airflow, side exhaust. TEFC motor driving cast aluminum fan blade. Circuit breaker combination motor starter. |
| Airflow |
2500CFM - 8000CFM (dependent on enclosure size and load capacity) |
| Fault Rating |
Fuses are rated 200KAIC. The load bank has a 5KAIC short circuit current rating. |
| Load Wire Insulation Rating |
600V, 150°C |
| Control Wire Insulation Rating |
600V, 105°C |
| Fan/Control Power |
Internal from load bus. Control circuits at 120V via transformer. The cooling fan operaters at 3-Phase line voltage. Load control circuits and fan motor control operate at 120V. Control circuits are fused. |
| Dimensions |
30"W x 30"H x 26.5"D up to 75KW
36"W x 30"H x 36.5"D over 75KW |
| Weight |
250 lbs up to 75KW
410 lbs over 75KW |
Note: Dimensions and weights are subject to change with capacities and options selected.
System Controls
Instrumentation
System Protections
| • | Main load molded case circuit breaker. |
Enclosure
| • | Hooded louvers. |
| • | Anti-condensation heaters at 120V, 1ø, 240V, 1ø, or any common 3ø voltage. |
Note: We are experts at building products that meet our customer's exact requirements. Contact Simplex if your job specifications require additional options or considerations.
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