GE IS200HFPAG2A IS200HFPAG2ADC | Fan and Transformer

Core Function and System Role

The GE IS200HFPAG2A powers cooling fans and provides voltage transformation for Mark VI systems. Specifically, this board drives cabinet fans and converts AC voltages. Moreover, it supplies isolated AC power to auxiliary circuits. The IS200HFPAG2ADC variant includes enhanced thermal protection for high-temperature environments.

Technical Specifications Overview

This fan and transformer board features four independent fan output channels. Each channel delivers 24 Vdc at 2 amperes. Furthermore, the board includes a multi-tap transformer for voltage conversion.

Parameter	Specification
Part Number	IS200HFPAG2A / IS200HFPAG2ADC
Type	Fan and Transformer Board / Cooling Power Module
Fan Outputs	4 Channels, 24 Vdc
Fan Current	2 A per Channel
Total Fan Power	192 W Maximum
Transformer Primary	120/208/240 Vac, 50/60 Hz
Transformer Secondary	24 Vac, 50 VA
Isolation Voltage	2500 Vrms
Fan Status Sensing	Tachometer Input per Channel
Overload Protection	3 A PTC per Channel
Power Supply	24 Vdc ±15% (Logic)
Connector Types	2 x 50-pin D-sub, 2 x Terminal Blocks
Dimensions (W x H x D)	210 x 125 x 35 mm
Weight	1.15 kg
Onboard Energy Storage	4 x 470 µF, 35V Capacitors

Connector Layout and Component Count

The board uses two terminal blocks for fan wiring connections. For instance, block TB1 handles fan outputs 1 and 2. Meanwhile, block TB2 manages fan outputs 3 and 4. Two 50-pin D-sub connectors provide tachometer feedback to the controller. The IS200HFPAG2ADC adds thermal sensors on each fan channel.

Energy Storage and Power Stability

This fan board includes local capacitance for stable fan operation. Specifically, four 470 µF capacitors filter the 24 Vdc supply. Therefore, the board maintains consistent fan speed during power fluctuations. Additionally, onboard LED indicators show each fan’s status. For example, a green LED illuminates when a fan operates normally. A red LED warns you of a stalled or failed fan.

Diagnostic Features and Fault Protection

The board continuously monitors each fan tachometer for proper rotation. Consequently, it detects stalled or failed fans within 1 second. Moreover, the GE IS200HFPAG2A IS200HFPAG2ADC includes thermal overload protection on each channel. This feature shuts down a fan if it draws excessive current. An onboard status register reports all fan health to the main controller.

Maintenance and Hot Replacement

You can replace this fan board without powering down the turbine. Thus, mean time to repair remains under ten minutes. The board stores no configuration data locally. Therefore, you simply install the replacement and resume normal cooling operation.

Industrial Applications

This fan and transformer board works inside GE Mark VI control cabinets. For reliable GE cabinet cooling, the IS200HFPAG2A and IS200HFPAG2ADC deliver exceptional performance. They provide robust fan control for steam and gas turbine control system enclosures.