ABB 3BHE021887R0101

Product Overview

ABB 3BHE021887R0101 UBC717BE101 is a specialized, coated PCB designed and manufactured by ABB for the industrial automation, power and drive product lines. The product is clearly labeled as "OVVP-Board Coated", where "Coated" indicates that a layer of Conformal Coating has been applied to the surface of the circuit board. This coating is typically a transparent polymer film used to seal and protect the electronic components on the circuit board, protecting them from moisture, dust, chemical pollutants, salt fog, and mold. Therefore, 3BHE021887R0101 is not an independent functional module or end product, but rather as a core spare part or sub-component, integrated within ABB's more complex electrical equipment. This ensures the long-term reliable operation of the host equipment in harsh industrial environments.

Product Function Features

3BHE021887R0101 is an OVVP-Board Coated product. The core functions and features stem from the physical properties and application scenarios.

Enhanced environmental protection capability

Conformal Coating is the most crucial feature. This thin and transparent coating can effectively

prevent moisture from condensing and penetrating, and prevent short circuits, leakage, and metal corrosion caused by moisture.

Dust-proof/anti-fouling forms a physical barrier to prevent conductive dust, oil stains and chemical solvents from adhering to the circuit board.

The anti-corrosion protection copper foil wiring and solder joints prevent them from being eroded by corrosive gases such as sulfides and chlorides in industrial atmosphere.

Enhancing insulation strength increases the insulation resistance between conductors and reduces the risk of electric arcs under high voltage.

Improve product reliability and life

3BHE021887R0101 significantly reduces Infant Mortality caused by environmental stress by resisting harsh environmental factors, thereby extending the overall service life and MTBF of the host equipment.

Unique design and precise matching

As an original ABB component, this circuit board is 100% matched with the original equipment in terms of electrical characteristics, mechanical dimensions, and connector definitions, ensuring seamless integration and system stability after replacement.

Support for harsh operating conditions

The coated board is specially designed for use in industrial sites with high humidity, much dust, chemical corrosion, or large temperature differences prone to condensation, such as chemical plants, coastal power plants, mines, food processing plants, etc.

Failure of the compressor driver in the coastal LNG receiving station

At a liquefied natural gas (LNG) receiving station located in a tropical coastal area, a critical re-condensation compressor is driven by an ABB medium-voltage frequency converter. The region experiences high temperatures, high humidity, and strong sea breeze and salt spray throughout the year. Although the frequency converter is installed in an air-conditioned room, tiny salt particles and moisture still slowly infiltrate through the ventilation openings.

After several years of operation, a control board of model 3BHE021887R0101 inside the frequency converter began to experience intermittent failures. Engineers' diagnosis revealed that some of the precise pins on the circuit board had a slight Electrochemical Migration phenomenon - this is the result of the combined action of moisture and salt.

The maintenance team immediately ordered the original ABB 3BHE021887R0101 coated board for replacement. The transparent conformal coating on the surface of the new board is precisely designed to withstand this harsh environment. After the replacement, the frequency converter resumed stable operation. The original coated board demonstrates the irreplaceable value in ensuring the continuous and reliable operation of critical infrastructure in harsh environments.