64787047 ABB

Product Description for ABB 64787047

Description: The 64787047 is a high-performance switch-fuse unit from ABB, identified by the type designation OESL630V32D24V2. This robust component is a key safety and protection device for industrial power systems, particularly within high-power variable speed drive applications like the ACS800 series. It combines the functionality of a manually operated disconnect switch with the overcurrent protection of fuses, offering a reliable solution for isolating and protecting electrical circuits.

Application Scenarios: In a large wastewater treatment facility, the pump motors are a critical part of the process, and their variable speed drives must be protected from short circuits and overloads. The facility was using a standard circuit breaker, but it lacked a clear, visible indication of the circuit’s status, posing a safety risk during maintenance. By installing the ABB 64787047 switch-fuse, the plant gained a superior level of safety and reliability. The unit’s clear handle position provides a visible indication of whether the circuit is open or closed, ensuring that maintenance personnel can work on the drive with confidence. Furthermore, the high-speed clearing action of the fuses within the 64787047 provides faster and more precise protection against fault currents, preventing damage to the expensive drive components and minimizing system downtime.

Parameter:

Main Parameters Value/Description Product Model: 64787047 Manufacturer: ABB Product Category: Switch Fuse ABB Type Designation: OESL630V32D24V2 Amperage: Up to 630 A, capable of handling high-power industrial applications. Voltage Rating: 1000V, suitable for use in high-voltage industrial circuits. Number of Poles: 6-pole configuration, providing comprehensive control for three-phase systems. Auxiliary Voltage: 230V (coil 115V), for internal control and indication circuits. Compatibility: Designed for use in the ACS800 series of multi-drive systems. Installation Method: Open-style, with a modular design that allows for flexible mounting arrangements. Weight: 40.7 kg (89.7 lbs), indicating a heavy-duty, robust construction. Country of Origin: Finland, a testament to high-quality European manufacturing standards.

Technical Principles and Innovative Values:

Innovation Point 1: Integrated Protection and Disconnection: The 64787047‘s design is a testament to safety and efficiency. It combines a manual load-break switch with high-rupturing-capacity (HRC) fuses in a single unit. This integration ensures that the circuit can be safely isolated for maintenance while being continuously protected from overcurrents. The fuses are designed for fast fault clearance, limiting the energy let-through and preventing damage to downstream equipment.
Innovation Point 2: High-Performance Modular Design: The switch-fuse features a modular design with a mechanism that can be arranged to suit specific installation requirements. This flexibility, along with an adjustable shaft for varying installation depths, simplifies the mechanical integration into control cabinets. The contact design enables rapid fault clearance and maintains the protection level even after a fault, ensuring long-term operational integrity.
Innovation Point 3: Enhanced Safety Features: Safety is paramount in high-power applications. The 64787047 provides a visible indication of the switch position and, due to its robust design, ensures the circuit remains protected even in the event of a fault. Its heavy-duty construction and high-quality materials guarantee reliable performance in demanding environments, protecting both personnel and valuable equipment.

Application Cases and Industry Value:

In a steel rolling mill, the main rolling motors are powered by a series of ABB ACS800 drives. The company was looking for a way to improve the safety and reliability of its electrical isolation points. They upgraded their systems by installing the ABB 64787047 switch-fuses in the main power cabinets. The clear visual feedback of the switch’s position provided a new level of confidence for maintenance staff performing lock-out/tag-out procedures. The quick-acting fuses of the ABB 64787047 proved their worth during a rare electrical short in the system, immediately isolating the fault and preventing a catastrophic failure of the drive, thus saving significant repair costs and avoiding a multi-day production shutdown.

Installation, Maintenance, and Full-Cycle Support:

The installation of the ABB 64787047 should be performed by certified electricians due to its high-voltage nature. The unit’s modular design and adjustable shaft make it adaptable to various panel configurations. Once installed, its robust construction requires minimal maintenance, primarily limited to visual inspection for any signs of damage or wear.

In the event of a fault, the fuse links within the 64787047 will rupture, providing a clear indication that the circuit has been protected. Replacing the fuses is a straightforward process for trained personnel, ensuring a quick return to operation. As this is a legacy product, its availability can be a factor, but our comprehensive network provides access to reliable new and refurbished units. Our technical team offers full-cycle support, including expert guidance on installation, commissioning, and replacement parts to keep your systems running safely and reliably.