THE ENABLING TECHNOLOGY – CLASS 4 POWER • Class 4 Power is a new class within the National Electrical Code (NEC), The first significant change to the NEC in over 40 years • Based on new 2022 UL Standard 1400-1 titled “Fault Managed Power Systems” • The terms “Class 4 Power” and “Fault Managed Power System” are often used interchangeably • A Fault-Managed Power System consist of a fault managed power transmitter and a fault managed power receiver connected by a cable • The circuit is actively monitored for faults, and transmit power is controlled to limit power delivered into any fault • The new Class 4 enables lower cost, higher power, and increased safety and efficiency ADVANTAGES OF CLASS 4 POWER • Class 2/3 hazard mitigation typically done by limiting the power or current at the source (100W max) • Class 4 is not power limited and has a maximum voltage of 450V • Ability to transfer power over long distances (up to 6,000 feet) • Inherently safe high voltage, ensured by complex active fault management software • Transmit power is immediately disconnected in the event of fault detection • Circuits are continuously monitored for faults at any location on the line: - Ground faults, line to line faults, short circuits, arcing faults • Power Transmission can be centralized making simplifying utility connections, backup and maintenance • Simplified installation, no electrician required
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