Description
The GE RS-E2-0285 is an industrial-grade, linear regulated DC power supply module engineered for high-reliability applications within legacy GE control architectures and testing equipment. This chassis-mounted module delivers stable, low-noise DC output voltages from a standard alternating current input, incorporating internal active regulation circuits to safeguard downstream electronic instrumentation against grid fluctuations and load transients.
Commercial Availability & Procurement
| Lifecycle and Logistics | Status & Details |
| Product Condition | New Surplus (Factory Sealed) or Refurbished (Fully tested under maximum rated static and dynamic loads) |
| Warranty | 12-month comprehensive industrial warranty |
| Availability | Available; standard global logistics packaging and dispatch within 24 to 48 hours |
| Pricing Note | Price varies based on market availability and component certification tiers. Contact our technical sales team for a firm, itemized quotation. |
Technical Specifications
| Parameter | Specification / Value |
| Module Type | Regulated Linear DC Power Supply |
| Model Designation | RS-E2-0285 |
| Input Voltage (Nominal) | 115 VAC / 230 VAC (Field selectable via internal jumpers or terminal links) |
| Input Frequency Range | 47 to 63 Hz |
| Output Regulation Accuracy | \pm 0.05\% for a 10\% line voltage variation |
| Load Regulation | \pm 0.05\% from zero to full rated output current |
| Ripple and Noise | \le 1 mV RMS (3 mV Peak-to-Peak maximum) |
| Transient Recovery Time | \le 50\ \mus for a 50\% load step change |
| Operating Temperature | 0 to +50 °C without derating (Max +70 °C with linear current scaleback) |
| Cooling Method | Natural convection via integrated heavy-duty extruded aluminum heatsink |
Field Integration & Thermal Management
Linear power supplies like the RS-E2-0285 offer exceptionally low electrical ripple and high electromagnetic compatibility (EMC) compliance compared to modern switch-mode power supplies (SMPS). However, they require careful environmental considerations during system integration.
Thermal Deployment Constraints
Because linear regulators dissipate excess voltage as heat across internal pass transistors, the RS-E2-0285 generates a continuous thermal load during operation.
- Mounting Orientation: The module must be mounted vertically on the enclosure sub-panel with the heatsink fins oriented vertically to maximize natural chimney-effect air currents.
- Clearance Envelopes: Maintain a minimum clearance of 50 mm above and below the module housing. Do not position heat-sensitive components, such as solid-state relays or microcontrollers, directly above the power supply’s thermal plume.
Critical Field Note: When configuring the input terminal block, verify that the physical jumper bars match the incoming plant utility voltage (115 VAC vs. 230 VAC). Applying 230 VAC to a module jumpered for a 115 VAC input loop will instantly destroy the internal isolation transformer and trip upstream overcurrent protection.
Troubleshooting & Circuit Diagnostics
The front face and internal PCB contain test points and adjustment potentiometers to facilitate field maintenance:
- Output Voltage Adjustment: A multi-turn trim potentiometer allows precise calibration of the factory DC output setpoint (typically adjustable within \pm 5\%). Use a calibrated digital multimeter to measure voltage at the remote sense or output terminals while performing adjustments under standard load.
- Overvoltage Protection (OVP): The module features an independent crowbar OVP circuit. If an internal component failure threatens downstream components with excessive voltage, the OVP circuit shorts the output to ground within microseconds, blowing the internal secondary fuse.
- LED Status Indicators: A solid green LED indicates that the output regulation loop is stable. If the LED is dark while input voltage is present, check for an overcurrent condition, a tripped OVP circuit, or an open internal fuse.
Frequently Asked Questions
Q: Can the RS-E2-0285 be wired in a parallel configuration to increase total output current capacity?
No. Standard linear power supplies without active external load-sharing control lines cannot be directly paralleled. The module with the slightly higher output voltage setting will attempt to carry the entire load, forcing it into a continuous current-limiting or thermal-overload state. If higher current capacity is required, the load circuits must be isolated and divided across separate power supply modules.
Q: What is the purpose of the “Sense” terminals (S+ and S-) on the output block?
The sense terminals enable remote voltage sensing. By running independent, low-gauge signal wires from the S+ and S- terminals directly to the physical load distribution point, the internal regulator measures and automatically compensates for the voltage drop caused by the resistance of the primary high-current power cables. If remote sensing is not utilized, the sense terminals must remain jumpered directly to their corresponding output terminals (+V and -V).
Q: How do I test the insulation integrity of the module during routine preventive maintenance?
Isolate all input and output wiring from the module terminals before performing an insulation resistance or Hi-Pot test. Applying high-voltage test signals directly to the connected electronics will break down the internal semiconductor junctions and permanently destroy the active regulation circuitry. Verify with the manufacturer’s testing guidelines for the maximum allowable isolation voltages across the transformer primary-to-secondary boundaries.
