The GE IS200AVFSG1A IS200AVFSG1ABB supplies regulated power to cooling fans in Mark VI cabinets. This board converts 120V AC into multiple DC voltages for fan motors. Therefore, it ensures adequate airflow for heat-sensitive turbine control components.
Product Overview
We designed this power supply specifically for cabinet ventilation systems. Its dual output channels support two independent fan motors simultaneously. Moreover, this unit includes tachometer feedback monitoring for each fan.
Technical Specifications
| Parameter | Specification |
|---|---|
| Dimensions | 17.8 cm (length) x 10.2 cm (width) |
| Weight | 0.32 kg (approximately 0.71 lb) |
| Interface Type | Single 40-pin backplane plus two fan connectors |
| Component Count | 98 components including bridge rectifier and linear regulators |
| Energy Storage | 2 aluminum capacitors (1000 µF, 50V) plus 6 ceramic |
| AC Input | 120V AC ±10%, 50/60 Hz, 1.5A max |
| DC Outputs | 24V DC at 1.0A for fan A, 24V DC at 1.0A for fan B |
| Output Ripple | 100 mV peak-to-peak maximum |
| Tachometer Inputs | 2 channels, 0-12V pulses from fan hall sensors |
| Speed Range | 0 to 6000 RPM measurable |
| Protection | Overcurrent and overtemperature on each output |
| Efficiency | 75% typical at full load |
Power Supply Topology
The GE IS200AVFSG1A IS200AVFSG1ABB uses a linear regulator after bridge rectification. Its two aluminum capacitors filter the rectified AC to smooth DC voltage. Additionally, each output has a dedicated 24V linear regulator IC. You get clean, noise-free power for sensitive fan electronics.
Energy Storage Function
Two large aluminum capacitors provide 200 ms of hold-up for the DC bus. This keeps fans running during brief AC line interruptions. Six ceramic capacitors filter high-frequency noise from the regulator outputs. Clean DC power extends fan bearing life and reduces audible noise. The capacitors also absorb startup inrush current from fan motors.
Tachometer Monitoring
Each fan channel includes a tachometer input for speed verification. The board conditions hall sensor pulses from 0 to 12V amplitude. An onboard comparator converts pulses to 5V logic for the backplane. The Mark VI controller reads fan speed through this interface. A loss of tachometer signal triggers an alarm within 5 seconds. Low speed below 500 RPM also generates a maintenance alert.
Installation Steps
Insert this board into any Mark VI slot with 40-pin backplane connection. Align the GE IS200AVFSG1A IS200AVFSG1ABB with the plastic card guides. Push the board firmly until the backplane connector seats completely. Then secure the board with its single front panel screw. Connect each fan cable to the labeled 4-pin output connectors.
Fan Connector Pinout
Pin 1 provides +24V DC power to the fan motor. Pin 2 connects to the fan’s ground return. Use only fans with open-collector tachometer outputs. The board includes a 10k pull-up resistor to 12V on each tach input.
Output Protection
Each output includes a self-resetting polyfuse rated at 1.5A. A stalled fan will trip the polyfuse within 2 seconds. The fuse resets automatically when the stall condition clears. Thermal shutdown at 85°C disables the affected output channel. The board restarts the channel when temperature drops to 70°C. Do not operate the cabinet without functional cooling fans.
Application Notes
This fan power board suits Mark VI turbine control cabinets exclusively. Many power plants use the GE IS200AVFSG1A IS200AVFSG1ABB for reliable cooling. Its dual outputs match standard 120mm cabinet fans from multiple manufacturers. Replace the board immediately if you detect any output voltage below 22V.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
Reviews
There are no reviews yet.