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High 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 Simplex Neptune Load Bank. The unit capacity range of the Neptune is 200-650KW, resistive, unity power factor. Reactive units (inductive or capacitive) are also available.
The Neptune is a single or dual voltage load bank suitable for all common 60, 50, and 400 hertz voltages up to 600V.
Simplex trailers conform to applicable Federal and DOT standards.
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General
Load Elements
| • | Elements mounted in easily accessible, slide out trays. |
| • | Simplex Powr-Web chromium alloy, open wire, continuously supported, power resistor. |
| • | UL Recognized |
System Controls
| • | Standard: Simplex D-Series Digital Controller with local or remote touchscreen. |
Cooling
| • | Integral forced air cooling system. |
| • | 3-phase, direct drive motor. |
| • | Rain shedding exhaust hood. |
| • | Forced air, vertical airflow -- cold air intake at bottom, hot air exhaust at top. |
Malfunction Protections
| • | Sensors, alarms (alarm messages and exhaust temperature displays on touchscreen), lock-outs as appropriate, for the following: fan failure, high exhaust temperature and 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
| • | Branch circuit contactors each step or each 50KW circuit maximum. |
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Contactors with enclosed silver surfaced contacts, 120V coils; electrically operated and electrically held. |
Connections
| • | Control Wiring: 105°C, color coded. |
| • | Power Wiring: 150°C XLP color-coded. |
| • | Cables connect to full rated copper bus bar with an oversized terminal junction box. |
| • | Cables connectable through top or bottom of chassis. |
Enclosure
| • | Type 3R weatherproof power section, including load elements and cooling fan. |
| • | Type 3R weatherproof control section, thermally and electrically isolated from resistive load power section. |
| • | Double wall construction for cool exterior. |
| • | Service access from three sides via hinged doors with lockable latches. |
| • | Finish painted with a UL Listed process consisting of either a powder-coated finish or a liquid-coated finish consisting of an epoxy primer and a polyurethane finish.
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Trailer Construction
| • | Extra-heavy duty steel trailer with steel deck. All welded frame construction. Meets all DOT requirements for highway use. 2000# lift jack. |
Vehicle Connections
| • | User specified hitches (2 5/16" ball hitch or 3" pintle ring hitch adjustable in 2" increments). 36" safety chains with hooks. Electric beak-away battery and switch. |
Brakes and Lights
| • | Electric driving breaks. Mechanical parking brake. DOT lighting and connector. Rear reflectors. |
| Capacity |
200KW-650KW |
| Load Type |
Resistive |
| Power Factor |
1.0 |
| Voltages |
All common 3-phase 50, 60, and 400 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 |
50KW resolution |
| Duty Cycle |
Continuous |
| Temperature |
120°F maximum ambient temperature.
Exhaust rise: 150°F - 200°F (Note: as airflow is not laminary, 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. |
| Airflow |
200KW-350KW: 10,400 CFM, 3-HP
400KW-650KW: 13,400 CFM, 5-HP |
| 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.
Load control circuits and fan motor control operate 120V via transformer. Control circuits are fused.
The cooling fan operates at 3-phase line voltage. |
| Dimensions |
200KW: 43"W x 91.75"H x 36"D - includes 42" exhaust hood
up to 650KW: 40"W x 108"H x 54"D - includes 42" exhaust hood |
| Weight |
1,600 lbs - 4,200 lbs |
Note: Dimensions and weights are subject to change with capacities and options selected.
| Construction |
Conforms to applicable Federal and DOT Standards
Hub and bearing assembly - cast iron with automative bearings
Dual fenders
Deck plate - 12 ga. hrs.
Frame formed steel channel
2000# lift jack |
| Capacity |
3500 lbs. gross weight |
| Lights |
ICC 12V, electric lights with 7 pole connector (male and female component)
(includes stop, turn, brake, and wire harness) |
| Brakes |
Electric and mechanical parking brake |
| Axles and Tires |
Single Axle
ST205-75-R14 |
| Suspension |
Leaf springs |
| Vehicle Connections |
2 5/16" ball hitch or 3" pintle ring hitch adjustable in 2" increments (user specified)
36" safety chains with hooks
Electric break-away battery and switch |
| Dimensions |
76"W x 130"H x 150"D - Trailer with Neptune Load Bank |
| Weight |
3,500 lbs. - Trailer with Neptune Load Bank |
Note: Dimensions and weights are subject to change with capacities and options selected.
System Controls
Fan/Control Power
Instrumentation
Malfunction Protections
| • | Main load disconnect breaker or fused disconnect switch. |
Connections
| • | Connection via cable in conduit, cable tray, cable duct, bus duct. |
Enclosure
| • | 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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