DS200LRPAG1 GE | New Surplus Stock

Description

Product Introduction

The old power supply died at 2 AM. The spare was on a shelf 200 meters away. The technician ran. The plant lost production for 45 minutes. After that, the plant installed DS200LRPAG1 boards in every rack. The LRPA is the primary rack power supply for Mark V systems. It provides all the voltages: +5 V (logic), +15 V and -15 V (analog), and 24 V (field power). The LRPA mounts in the rack (slot 0) and replaces external power bricks.

The DS200LRPAG1 is the primary power supply module for Mark V racks. It accepts 120 or 240 V AC (switch-selectable) and outputs +5 V at 20 A, ±15 V at 5 A each, and 24 V at 8 A. The board has a built-in fan (variable speed) and active power factor correction (PFC). The LRPA occupies slot 0 (dedicated power slot) and communicates with the controller via the I/O bus (status, temperature, faults).

What makes the G1 different from external power supplies? It’s rack-mounted (no external wiring). It has I/O bus communication (the controller knows if the supply is failing). It has hold-up time (20 ms) and comprehensive protection (OVP, OCP, OTP). For new Mark V systems, the LRPA is the standard power supply.

Key Technical Specifications

Quality Inspection Process (SOP Transparency)

The LRPA is a high-power supply. We load-test all outputs simultaneously.

Incoming Verification: OEM packing slip. Visual inspection: AC input connector (IEC C14), fan (60 mm, spin freely), large capacitors (not domed), input fuse (accessible). The board has a voltage selector switch (120/240 V) — verify setting.

Load Test (All Outputs, Full Load, 4 Hours): Apply 120 V AC. Loads: +5 V @ 20 A, +15 V @ 5 A, -15 V @ 5 A, 24 V @ 8 A. Run for 4 hours at 25 °C ambient. Monitor output voltages every 30 minutes. Acceptance: +5 V: 4.95-5.05 V, +15 V: 14.85-15.15 V, -15 V: -15.15 to -14.85 V, 24 V: 23.5-24.5 V. Ripple <spec.

Thermal Test (50 °C Ambient, 80% Load): Derate to 80% (16 A on +5 V, etc.). Run for 4 hours. Fan must ramp to 100% by 50 °C internal. Monitor internal temperature — must stay below 85 °C (shutdown at 85 °C — need margin). At 50 °C ambient, internal temp 78 °C — passes.

Hold-Up Time Test: Remove AC input at full load. Measure time before +5 V drops below 4.75 V. Must be >18 ms (spec: 20 ms). At 120 V AC, 21 ms.

Fan Test: Run at 10% load (fan minimum speed). Increase load to 100% — fan must ramp smoothly. Measure fan speed via tachometer (3-wire fan). At 100% load, fan speed >5,000 RPM.

Overvoltage Protection Test: Force +5 V above 6.0 V (external supply). Board must shut down. Cycle AC to reset.

Communication Test (I/O Bus): Install LRPA in rack with controller. Read status (voltages, temperature, fan speed). All values must be within spec.

Field reliability note (from our RMAd board tracking): We sold 120 units of DS200LRPAG1 over 48 months. Nine field failures: five from fan bearing failure (after 4-5 years), two from input MOV failure (lightning), two from capacitor aging (bulging). 7.5% failure rate (fan is the weak point).

Field Replacement Pitfalls

Get these five right and you’ll cut rework time by 90%. The LRPA is the heart of the rack.

Fan — Replace Every 3 Years (Bearing Wear)
The LRPA’s fan runs continuously. At 100% load, it runs at 100% speed. The bearing wears. One site had a fan that seized at 3.5 years. The board overheated (95°C internal). The power supply shut down (thermal protection). The rack lost power. Replace the fan every 3 years. Fan part number: GE# 336A6300P1 (60 mm, 12 V DC, 3-wire tach). The fan is field-replaceable (four screws, one connector).

Voltage Selector Switch — Set Correctly (120 V or 240 V)
❗ The LRPA has a voltage selector switch (red, accessible through the front panel). One site set it to 120 V but connected 240 V AC. The input capacitors exploded. The board died. Set the switch before applying power. The board has a label. Read it.

Load Derating — 80% Above 50 °C Ambient
The LRPA derates to 80% output above 50 °C ambient. At 55 °C, +5 V is 16 A (not 20 A). One site had a rack drawing 18 A at 55 °C. The board overheated and shut down every hour. Add cooling (fan) or reduce load. The derating is real.

Slot 0 Only — Will Not Fit Other Slots
The LRPA mounts in slot 0 only (dedicated power slot). One site tried to install it in slot 1. The backplane connector is different (the board has keying). It didn’t fit. Don’t force it. Slot 0 is usually the leftmost slot in the rack.

Hold-Up Time — 20 ms, Not for Long Power Sags
The LRPA holds up for 20 ms (1 cycle at 50 Hz). One site had a power sag lasting 200 ms (10 cycles). The +5 V dropped. The controller rebooted. Use a UPS for longer sags.

New Original vs. Refurbished: Why It Matters

The LRPA’s fan and capacitors age. Refurbished boards have worn fans and dried capacitors.

What “New Original (New Surplus)” means on this model:
GE manufactured the LRPAG1 until 2022. Our stock comes from a panel builder’s overstock — original GE cartons, boards never powered. The fan has zero hours. The capacitors are fresh (low ESR).

Refurbished risk in plain terms:
One refurbished LRPA we tested had a fan that was quiet — too quiet. The fan bearing was dry, spinning at 2,000 RPM instead of 5,000 RPM. The board overheated at 15 A load (shutdown at 95°C). The seller didn’t check fan speed. Another refurbished board had bulging capacitors (high ESR). The +5 V rail had 200 mV ripple (controller reset randomly).

Real cost of a refurbished failure:
An LRPA that fails under load takes down the entire rack (controller, I/O, motion). Production stops. A refurbished LRPA sells for 200-400 online. Our new surplus price is 600. The difference is $200-400. One hour of downtime in a packaging plant pays for the delta.

What we provide as proof:

• Original GE carton
• Full load test (4 hours, all outputs)
• Fan speed verification (ramp from 30% to 100%)
• Capacitor ESR measurement (fresh)
• Hold-up time test (>18 ms)
• OVP/OCP test
• 12-month warranty (includes fan)

Our price sits roughly 40% below GE’s last list price ($1,000) and about 60% above typical refurbished listings. The delta pays for full load testing, fan verification, capacitor health, and warranty.

Performance Benchmarks & Test Results

Test environment: 120 V AC input, 25 °C ambient, programmable loads on all outputs.

Output +5 V regulation (0-20 A load): 4.98-5.02 V. Load regulation <1%.

Output +15 V regulation (0-5 A): 14.95-15.05 V.

Output -15 V regulation (0-5 A): -15.05 to -14.95 V.

Output 24 V regulation (0-8 A): 23.8-24.2 V.

Output ripple (+5 V, 20 A): 35 mV peak-to-peak. (+15 V, 5 A): 28 mV. (24 V, 8 A): 65 mV.

Efficiency (full load, 120 V AC): 88.2%. At 240 V AC: 89.5%.

Hold-up time (full load, 120 V AC): 21 ms (spec: 20 ms).

Fan speed vs load (25 °C ambient): 10% load: 2,000 RPM (30%). 50% load: 3,500 RPM (60%). 100% load: 5,200 RPM (100%).

Fan noise (1 meter): 30 dBA at 50% load, 45 dBA at 100% load.

Internal temperature (full load, 25 °C ambient): 58°C. Fan at 60%.

Internal temperature (80% load, 50 °C ambient): 78°C (fan at 100%). Below 85°C shutdown.

Field reliability note (from our RMAd board tracking): 120 units sold, 9 failures (fan, MOV, caps). Refurbished boards: tested 25 units, 12 had worn fans, 8 had high-ESR capacitors (ripple >100 mV), 3 had damaged input MOVs, 2 passed. 8% acceptable. Power supplies are consumables. Buy new surplus.

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