The ABB 1KHW002238R0001 (N4BG) and 1KHW002237R0001 (OPIC1 R1A) are highly specialized printed circuit boards designed for use within ABB’s high-voltage power electronics and transmission systems. These boards typically function within the control architecture of Static Var Compensators (SVC), HVDC converters, or large-scale excitation systems. The OPIC1 (Optical Interface Card) version is specifically engineered to bridge the gap between electronic control logic and high-voltage components using fiber-optic isolation to ensure maximum safety and signal integrity.

 

Product Specifications

• Model Number: 1KHW002238R0001 / 1KHW002237R0001
• Product Type: Optical Interface Control Board / Main PCB
• Series: OPIC1 R1A / N4BG
• Interface Type: Fiber Optic and Digital Parallel Interface
• Voltage Isolation: High-grade optical isolation for EMI/RFI protection
• Material: High-frequency, temperature-resistant FR4 substrate

 

Dimensions and Physical Attributes

• Dimensions: 23.5 cm x 17.2 cm x 2.8 cm
• Weight: 0.72 kg
• Country of Origin: Switzerland / Sweden

 

Application Fields

These boards are critical components in power grid stability and heavy industrial energy management. They are primarily found in HVDC (High Voltage Direct Current) converter stations, large-scale motor drives, and FACTS (Flexible AC Transmission Systems). By using optical interfaces, these boards allow the control system to manage high-power thyristor or IGBT valves while maintaining complete electrical isolation from the high-voltage environment.

 

Product Usage Instructions

The ABB 1KHW002238R0001 must be installed in a clean, dust-free environment, preferably within an RFI-shielded cabinet. When connecting the fiber optic cables to the OPIC1 ports, ensure the connectors are free of dust and debris using a specialized fiber cleaning kit. The board should be seated firmly into the sub-rack backplane. Avoid touching the optical sensors or sensitive surface-mount components without proper ESD grounding. Once powered, the board will synchronize with the central processing unit to begin high-speed signal distribution.

Frequently Asked Questions Q&A

Q: Can I use the OPIC1 R1A to replace an R1B revision? A: While they are often backwards compatible, R1A and R1B may have slight timing or component differences. It is recommended to check the system firmware version to ensure the new revision is recognized.

Q: Why does this board use fiber optics instead of copper wiring? A: Fiber optics provide total galvanic isolation, which is essential in high-voltage environments to prevent power surges from destroying the control electronics and to eliminate electromagnetic interference.

Q: What is the meaning of the “N4BG” designation? A: N4BG is an ABB internal hardware classification code that identifies the specific assembly and functional group for the carrier or main circuit board.

 

Related Product News

As global energy grids transition toward “Smart Grid” technology, ABB is focusing on upgrading boards like the 1KHW002237R0001 to support faster communication protocols. The OPIC1 series remains a benchmark for reliability in offshore wind farm interconnectors, where environmental stress and electrical noise are at their peak. Recent manufacturing improvements have enhanced the thermal durability of these PCBs, allowing them to operate at peak efficiency even in the high-heat environments of industrial converter halls.

 

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