Operational Ratings & Limitations
| Capacity |
250 kW @ 1.0 power factor; 301A |
| Voltage |
480V AC, 3-phase, 3-wire |
| Frequency |
60 Hz |
| Load Steps |
Infinite resolution; 0-25-25-50-50-50-50 kW |
| Duty Cycle |
Continuous |
| Ambient Temperature |
125°F |
| Control Power |
External 120/240V single-phase, 15A service |
Cooling Requirements
| Coolant |
PG25 |
| Nominal Rise |
12.5°F |
| Flow Rate |
125 GPM @ 12.5°F rise |
| Formulas |
kW = GPM × ΔT × 0.16
GPM = kW ÷ (ΔT × 0.16)
ΔT = kW ÷ (GPM × 0.16) |
| Operating Pressure |
75 PSI |
| Test Pressure |
225 PSI |
| Water Connections |
2” inlet/outlet, quick-disconnect dry-break |
Load Bank Enclosure
Type 1 indoor freestanding enclosure. Welded, powder-coated steel frame with front and rear hinged doors, bolt-on top panel, forklift channels, lifting eyes, casters, and hand-moving handles. Rear water connections and front cam-lock cable panel.
All wetted components are 304 or 316 stainless steel, including load elements, piping, sensors, and valves.
Principal Systems & Components
- Load Cells: Heavy-gauge 304L / 316L stainless steel housings
- Load Elements: Immersion-type, stainless steel sheathed, screw-plug mounted
- Load Control: Branch circuit contactors, 50 kW per branch
- Circuit Protection: Fused branch circuits, 200 kAIC
- Power Wiring: 150°C rated, color-coded and numbered
- Control Wiring: 105°C rated, color-coded and numbered
- Power Connection: Cam-lock panel, 400A per phase + ground
- Control Power Connection: 120/240V single-phase inlet
System Protection & Monitoring
- High water temperature shutdown
- Low coolant flow detection
- High cell pressure monitoring
- Sensor-based alarm and lockout systems
Load Bank Control
PLC-based digital load control using Automation Direct BRX platform. Local touchscreen controller with network capability for multi-unit operation. Programmable for manual or basic automatic testing.