Powerbox PBSP 74I SERIES DC/AC Inverter - Railway (2kW)
The Powerbox PBSP 74I Series DC/AC Railway Inverter is a durable 2kW solution specifically designed for railway rolling stock applications. Engineered to provide stable and high-quality AC power, it supports critical rail systems such as onboard equipment and signaling infrastructure. Key features include intelligent overload and short circuit p...
Read MoreThe Powerbox PBSP 74I Series DC/AC Railway Inverter is a durable 2kW solution specifically designed for railway rolling stock applications. Engineered to provide stable and high-quality AC power, it supports critical rail systems such as onboard equipment and signaling infrastructure.
Key features include intelligent overload and short circuit protection, input spike and burst protection, and dynamic low voltage control. The PBSP 74I delivers a true sinewave 240VAC output with less than 3% total harmonic distortion, ideal for sensitive electronics. With a high surge rating of up to 6kW and peak efficiency of 92%, it ensures reliable performance even under variable load conditions and in harsh environments.
This inverter operates within a 60-84VDC input range, with automatic protections for over- and under-voltage scenarios. Its robust, powder-coated aluminum chassis meets stringent railway standards for shock and vibration resistance, making it well-suited for continuous use in demanding railway settings.
The Powerbox PBSP 74I Series is the perfect choice for railway applications needing dependable, clean AC power in a rugged 2kW design.
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Features
- 2000W DC/AC Inverter
- Rolling Stock Rail 74VDC Input
- Rugged Build
- High Surge Rating 6KW
- Input Spike & Burst Protected
- Model Variants available; -PS
- Automatic protection for over/under voltage scenarios
Specifications
| INPUT (PRELIMINARY SPECIFICATIONS) | |
|---|---|
| Input Voltage: | 74Vdc (60-84Vdc) |
| Startup voltage | 67Vdc |
| Under voltage cut-out | 59Vdc. |
| Under voltage re-set | 71Vdc. |
| Over voltage cut-out | 90Vdc. |
| Over voltage re-set | 87Vdc |
| Input Current | Standby: 30mA ON with no load: TBD Pout = 2000W, Vin=74Vdc; 30A, Any load, 60V < Vin < 84Vdc; 37A max |
| DISPLAYS, CONTROLS & ALARMS | |
|---|---|
| Front Panel Controls (-PS) | DC Input 50A 10kA MCB AC Output 10A MCB/RCD |
| Right Side Controls (-PS) | ON/OFF Toggle Switch |
| Right Side Displays (-PS) | ON / Standby / Overload LED Overtemperature LED DC Volts Out of Range LED |
| OUTPUT | |
|---|---|
| Output Voltage | 240Vrms (237.5 - 242.5Vrms) 0W < Pout < 2000W, Vin = 74Vdc . (228 - 252Vrms) 0W < Pout < 2000W, 60V < Vin < 84Vdc |
| Total Harmonic Distortion | 3% 0W < Pout < 2,000W, Vin = 74Vdc |
| Continuous output power | 2,000W, Ta = 50°C, PF=1.0 |
| Continuous output current | 8.3A rms |
| Output power | 30 minutes: 2,500W 10 minutes: 3,000W 3 seconds: 6,000W |
| Output Frequency | 50Hz ±1% |
| Efficiency | Pout = 200W: TBD% Pout = 2,000W: TBD% Ppeak: 92% |
| ENVIRONMENTAL | |
|---|---|
| Operating temperature | 0°C to 50°C ambient Continuous full load operation |
| Cooling | Internal thermostatically controlled fan. |
| Relative Humidity | 95% 40°C non-condensing |
| Shock | 4G ±20% longitudinally 2G ±20% laterally 2G ±20% vertically 50ms duration 20 shocks per axis |
| Vibration | Resonant search: 20 - 2.2mm double amplitude (1-9Hz) 2.2-0.8mm double amplitude (10-50Hz) Endurance: 3 hours per axis (X,Y,Z) at 50Hz 0.8mm double amplitude. |
| PROTECTION | |
|---|---|
| Input protection | 50A, AS3111, 20kA MCB Input Over / Undervoltage Cutout |
| Output overload and short circuit protection | Automatic shutdown Auto restart after 60 secs |
| Output protection | 10A, AS3111 / AS3190 6kA C-Curve MCB/RCD.  Output neutral connected to inverter chassis earth on inverter side of MCBO |
| Over temperature protection | Automatic Shutdown |
| Dialectric Strength | Input to Chassis: 1700Vdc Output to Chassis: 2250Vdc Input to Output: 4250Vdc |
| MECHANICAL PBSP-74O-PS | |
|---|---|
| Mechanical Outline | See Technical illustration |
| Construction | Powder coated aluminum chassis. |
| Dimensions | Length: 420mm Width: 230mm Height: 204mm |
| Weight | 18kgs. |
| Mounting | M8 hardware on 425 x 170mm centres |
| DC Input termination | Spacecraft SCP02YJ22-2P F80 Three crimp pin chassis receptacle or equivalent. Olive drab cadmium finish. |
| DC Input connector Mating connector | Spacecraft SCP08FJ22-2S F80 Right angle three crimp socket plug (3 x #8AWG / 10mm2) with cable clamp or equivalent. Olive drab cadmium finish. |
| AC Output termination | Spacecraft SCP08YJ18-10S F80 Four crimp socket chassis receptacle or equivalent. Olive drab cadmium finish. |
| AC Output termination Mating connector | Spacecraft SCP08FJ18-10P F80 Right angle four crimp socket plug (4 x #12AWG / 4mm2) with cable clamp or equivalent. Olive drab cadmium finish. |
| Chassis Earth Termination | M6 x 15mm stud on bottom face. |
| Wiring | All internal wiring uses Radox 125 halogen free low smoke cable. |
| Notes 1.Dielectric strength is tested for 1 minute with DC voltage. Testing with 50/60Hz AC voltage is not recommended due to voltages which this can induce in the circuitry under test. Internal EMC filter capacitors between input leads and chassis are disconnected during these tests. The internal output neutral to earth link must also be removed during these tests. Input to output dielectric strength is specified for internal components which bridge these connections only and cannot be tested on a finished unit. 2. DA denotes double amplitude. 3. Overall dimensions do not include connectors, circuit breakers or circuit breaker protection brackets. |
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Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.