CME420-D-2 BENDER

CME420-D-2 BENDER Power Board

Product  Description：

Bender Power Boards are high-reliability electronic assemblies engineered by Bender GmbH for specialized electrical safety, power distribution, and insulation monitoring systems. These boards serve as the core power handling and signal acquisition platform in medical facilities, industrial plants, and renewable energy sectors. They are specifically optimized to operate within ungrounded (IT) systems, grounded (TN/TT) systems, and resistance-grounded networks, ensuring continuous power availability while actively monitoring for electrical faults.

Product Parameters

The technical configuration of a Bender Power Board emphasizes precise voltage regulation, high isolation barriers, and rapid fault signal processing:

• Input Voltage Range: Configurable for various industrial and medical standards, typically supporting 100V to 240V AC for control circuits, and up to 690V AC or 1000V DC for main power monitoring lines.

• Frequency Tolerance: Designed to operate seamlessly across standard 50Hz and 60Hz grids, with specialized variants supporting high-frequency systems up to 400Hz.

• Dielectric Isolation: High-grade galvanic isolation, frequently rated between 3kV and 4kV AC, to safeguard low-voltage microcontrollers from high-voltage line transients.

• Power Consumption: Low power standby design, minimizing internal thermal emissions within sealed control enclosures.

• Output Rail Precision: Delivers highly stabilized DC voltage outputs, such as 24V DC for internal sensor bus power and peripheral alarm modules, with a ripple factor of less than 0.5 percent.

• Temperature Coefficient: Maintained components rated for extended ambient thermal performance, ranging from -25°C to 70°C.

Product Advantages

Bender Power Boards deliver distinct performance benefits centered around electrical safety, uptime preservation, and intelligent monitoring:

• Continuous Insulation Monitoring Integration: These boards are uniquely designed to interface directly with Bender’s advanced insulation monitoring algorithms, detecting ground faults at an early stage before circuit breakers trip.

• Medical-Grade Reliability: Engineered to comply with strict international standards like IEC 60364-7-710, making them suitable for life-support isolated power systems where sudden power loss is unacceptable.

• Advanced Fault Filtering: Equipped with highly sophisticated internal circuitry that filters out DC components and harmonics generated by variable speed drives, preventing false alarms or overlooked insulation degradation.

• Fail-Safe Power Routing: Features integrated redundant control pathways that ensure critical safety logic remains functional even if a localized component fails.

• Compact Modular Footprint: Maximizes power density by integrating the power supply, current transformer interfaces, and monitoring communication buses onto a single multi-layer PCB, reducing external wiring complexity.

Product Applications

These power boards are implemented globally in fields where electrical safety and operational continuity are non-negotiable:

• Medical Group 2 Rooms: Serving as the core power distribution and monitoring baseline for operating theaters, intensive care units, and cardiac catheterization rooms.

• Renewable Energy Systems: Managing power conditioning and insulation tracking within large-scale solar photovoltaic inverters and wind turbine generators.

• Electric Vehicle Infrastructure: Integrated into fast-charging DC stations to monitor isolation resistance between the vehicle chassis and the grid during high-power energy transfers.

• Marine and Offshore Engineering: Controlling auxiliary power distribution and detecting ground faults on commercial ships, submarines, and offshore oil platforms.

• Heavy Process Industries: Providing safe control power in chemical plants, paper mills, and mining operations where ungrounded IT networks are utilized to avoid sudden production shutdowns.

Important Precautions

To preserve the safety features and functional longevity of the power board, the following precautions must be strictly observed:

• High Voltage Capacitor Hazard: The board contains energy storage components that retain lethal voltage levels after power disconnection. Always wait a minimum of five minutes and verify with a voltmeter before handling terminal connections.

• Strict Grounding Guidelines: The system ground terminal must be connected directly to the master protective earth bar of the enclosure using a low-impedance conductor to ensure accurate leakage current measurement.

• Insulation Testing Limitations: Disconnect the power board entirely from the circuit before performing high-voltage dielectric tests or insulation resistance testing (Megger tests) on the external wiring, as the testing voltages will destroy the board’s sensitive measurement inputs.

• Ventilation and Orientation: Mount the board in the specified vertical alignment to facilitate natural thermal convection. Maintain recommended clearance zones from adjacent heat-generating devices like transformers or power resistors.

• Terminal Screw Torques: Ensure all terminal block connections for high-current tracks are tightened to the exact torque specified in the manual. Under-tightened screws can generate severe localized heating, leading to terminal melting or fire hazards.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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Our main products include DCS control system spare parts, PLC system spare parts, and robot system spare parts. Our advantageous brands include Allen Bradley, Bently Nevada, ABB, HIMA, Reliance, Bender, National Instruments, Emerson Ovation, Honeywell, Siemens, Allen Bradley, ICS Triplex, FOXBORO, Schneider, GE Fanuc, Motorola, HIMA, Prosoft, and other imported industrial components. Our main products serve a wide range of electronic, metallurgical, chemical, and power plants Industries such as steel mills, rubber, cement, machinery and equipment, and construction.