Description
Remote powering is a concept for distributing DC power over existing twisted pairs. The concept is typically for use in broadband applications, where telecom equipment is located closer to the end user and requires power (DSLAM). What makes Remote Powering attractive is the independence from the local power utilities and the centralized back-up system (batteries).
The Flatpack Remote Power Systems are designed to provide ±190 VDC or ±130 VDC from a 48 VDC source for remote powering of telecom equipment. The power system consists of DC/DC converters, VA limiters providing a safe distribution of the power over existing twisted pairs, and a remote end DC/DC converter converting the high DC voltage down to 48 VDC for powering the DSLAM equipment. The Flatpack VA limiter unit is designed to protect the Remote Feeding Telecommunications Circuits (RFT) from overvoltage, overcurrent and leakage current to ground, and
the design is based on the IEC 60950-21, IEC 60950 and GR-1089-CORE safety standards.
The VA limiter is designed for ±190 VDC and ±130 VDC system voltage, RFT-V and RFT-C circuits. The module has 12 outputs of up to 100 W each (RFT-V). The central office systems vary from 2U/ 24 outputs to complete cabinets with up to 432 VA limiter outputs. The remote end converter consist of parallel DC/DC converters specifically designed to work from a limited power source (VA limiter) fed over a high impedance line and incorporates high energy surge protection. The modules can be
paralleled to meet the power requirement at the remote end.
Remote powering is a concept for distributing DC power over existing twisted pairs. The concept is typically for use in broadband applications, where telecom equipment is located closer to the end user and requires power (DSLAM). What makes Remote Powering attractive is the independence from the local power utilities and the centralized back-up system (batteries).
The Flatpack Remote Power Systems are designed to provide ±190 VDC or ±130 VDC from a 48 VDC source for remote powering of telecom equipment. The power system consists of DC/DC converters, VA limiters providing a safe distribution of the power over existing twisted pairs, and a remote end DC/DC converter converting the high DC voltage down to 48 VDC for powering the DSLAM equipment. The Flatpack VA limiter unit is designed to protect the Remote Feeding Telecommunications Circuits (RFT) from overvoltage, overcurrent and leakage current to ground, and
the design is based on the IEC 60950-21, IEC 60950 and GR-1089-CORE safety standards.
The VA limiter is designed for ±190 VDC and ±130 VDC system voltage, RFT-V and RFT-C circuits. The module has 12 outputs of up to 100 W each (RFT-V). The central office systems vary from 2U/ 24 outputs to complete cabinets with up to 432 VA limiter outputs. The remote end converter consist of parallel DC/DC converters specifically designed to work from a limited power source (VA limiter) fed over a high impedance line and incorporates high energy surge protection. The modules can be
paralleled to meet the power requirement at the remote end.
