World Of Controls understands the criticality of your requirement and works towards reducing the lead time as much as possible.
IS200RAPAG1A - Rack Power Supply Board is available in stock which ships the same day.
IS200RAPAG1A - Rack Power Supply Board comes in UNUSED as well as REBUILT condition.
To avail our best deals for IS200RAPAG1A - Rack Power Supply Board, contact us and we will get back to you within 24 hours.
SPECIFICATIONS:
Part Number: IS200RAPAG1A
Manufacturer: General Electric
Series: Mark VI
Function: Rack Power Supply Board
LED: IPOK, MPOK
Test Points: N15, P5, P15, and DCOM
Heat Sinks: Two
Location: Mounted in Innovation Series board rack
Bus Host Processor: Parallel-style bus host processor
Fuse: 1 amp, 250V
Product type: PCB
Availability: In stock
Country of Manufacture: United States (USA)
FUNCTIONAL DESCRIPTION:
IS200RAPAG1A is a Rack Power Supply Board manufactured and designed by General Electric and is part of the Mark VI Series used in GE Speedtronic Gas Turbine Control Systems. The RAPA board accepts a 48 VDC, 25 kHz square-wave input typically supplied via an external pulse-width-modulated converter and converts this into a range of precision-regulated DC voltages. The internal power stage includes a transformer-isolated, high-speed switching topology, likely based on a forward-converter or flyback converter architecture, which ensures galvanic isolation, low EMI, and high efficiency even under varying load conditions.
The board integrates control logic for fault detection, undervoltage lockout, soft-start sequencing, and output foldback protection. It features a non-volatile 1024-bit serial EEPROM that stores critical board-level identification, configuration parameters, and system asset tracking data. This enables hot-swap capability and auto-detection by the Mark VI controller through the IONet communication protocol. Diagnostic feedback is provided via two on-board LEDs: IPOK (Input Power OK) verifies the presence of valid input signal characteristics (voltage, frequency, waveform quality), and MPOK (Module Power OK) confirms the delivery of all onboard regulated supplies within defined tolerances.
OPERATION:
The rectified and filtered output provides tightly regulated power lines, typically including +5V, +12V, and possibly ±15V rails depending on rack configuration. Control logic ensures sequential power-up of outputs to avoid inrush current and timing conflicts with dependent boards. The soft-start mechanism prevents voltage overshoot, and active clamping limits transients.
Real-time operational health is constantly monitored. The IPOK LED is directly tied to input-stage voltage sensing circuits, often via a comparator-driven logic gate network. Similarly, the MPOK LED is connected to output sense lines and will only illuminate when all regulated outputs are within ±5–10% of nominal values. The presence of a 1 A, 250 V time-lag fuse on the 24 VDC auxiliary output rail ensures localized protection against short circuits or overcurrent faults downstream. The reset push-button on the front panel interfaces with onboard logic (possibly a Schmitt-trigger or microcontroller-based latch) to perform a cold restart of the power sequencing and identification process.
WOC offers the largest inventory of OEM replacement parts for GE Speedtronic Gas Turbine Control systems. In addition to supplying unused and refurbished boards, each backed by a warranty, we also provide expert repair services for faulty modules. Our technical team is available 24/7 to support all your automation and control system needs. For inquiries regarding pricing, availability, or repair services, please don’t hesitate to contact us by phone or email.
What is the core function of the Rack Power Supply Board?
The Rack Power Supply Board serves as the central power distribution module within the GE Mark VI Innovation Series rack. It converts a 48 VDC square-wave input (typically generated by a PWM power supply) into multiple regulated DC voltages required to operate processor boards, I/O modules, and communication interfaces.
What type of input waveform is required, and what are its characteristics?
The board is designed to operate with a high-frequency 25 kHz square-wave input at 48 VDC. This is a pulse-width modulated signal, not a traditional steady-state DC input. The square-wave form allows for transformer-based high-efficiency power conversion with galvanic isolation.
What output voltages does it deliver, and how are they distributed?
The board generates several DC voltage rails (typically +5V, +12V, and ±15V) distributed through the backplane to support various subsystems. Output regulation is typically within ±5–10% tolerance under nominal load, managed by feedback control loops integrated into the board.
