Basler Electric CBS 212 Current Boost System

The Basler Electric CBS 212 Current Boost System (part number 9265000100) is a power electronics device designed to assist motor starting in weak power networks. When large induction motors are started, they draw high inrush currents that can cause unacceptable voltage drops, affecting other loads and potentially tripping sensitive equipment. The CBS 212 injects a controlled boost current during the starting period, mitigating voltage dips and ensuring smooth acceleration.

Operating Principle

The system continuously monitors the supply voltage and load current. Upon detection of a motor start, it activates a boost module that supplies additional reactive and active current from an internal energy storage (capacitor bank) or from a separate auxiliary source. The boost is synchronized with the motor’s starting cycle and is automatically removed once the motor reaches rated speed or after a programmable time. The control unit adjusts the boost level to match the motor’s requirements, optimizing performance while minimizing stress on the supply.

Key Features

The CBS 212 offers adjustable boost current up to 120% of nominal load current, with response time under 20 milliseconds. It includes overcurrent protection, thermal monitoring, and fault indication via LED. The system supports input voltages from 208 to 480 VAC, 50/60 Hz, and is equipped with a communication interface (RS‑485) for remote monitoring and integration with building management or SCADA systems. A front‑panel display shows operating status, boost duration, and fault codes.

Technical Specifications

Input voltage: 208‑480 VAC, 3‑phase. Boost current: selectable up to 120% of rated. Boost duration: programmable 0.5‑10 seconds. Response time:<20 ms. Control power: 24 VDC or 120 VAC. Operating temperature: –10°C to +50°C. Enclosure: NEMA 1, floor‑mount or wall‑mount. Compliance with IEC 60947 and UL 508.

Benefits

By reducing voltage dips, the CBS 212 improves power quality, prevents nuisance tripping of contactors and relays, and reduces mechanical stress on motors and driven equipment. It also allows the use of smaller generators or transformers in remote or capacity‑constrained installations. The system is energy‑efficient, as it operates only during starting events.

Applications

This system is ideal for compressor stations, conveyor systems, crushers, fans, pumps, and other high‑inrush applications. It is particularly useful in offshore platforms, mining operations, and industrial plants with limited utility capacity. It can be retrofitted into existing motor control centers with minimal cabling changes.

Installation and Commissioning

Mount the unit in a clean, ventilated area close to the motor starter. Connect power leads, control wiring, and communication cables. Commissioning involves setting the boost current and duration via the front panel or software, and verifying performance with a motor start test. The system includes self‑diagnostic routines for rapid troubleshooting.

Reliability and Maintenance

Built with industrial‑grade components and forced‑air cooling, the CBS 212 is designed for continuous operation in demanding environments. Routine maintenance includes filter cleaning and periodic capacitor health checks. The unit has a mean time between failures (MTBF) exceeding 50,000 hours.

Conclusion

The Basler Electric CBS 212 Current Boost System is a practical and effective solution for mitigating voltage dips during motor starting. Its robust design, flexible settings, and ease of integration make it an invaluable tool for improving power system reliability and performance.