Powerlink Corporation; Customized power quality solutions


		DC Power Systems Telecommunications equipment requires either a -48 VDC or +/- 24 VDC power source that can only be provided by rectifiers that convert AC to DC voltage. DC power systems combine one or more rectifiers with optional distribution, battery back-up, and monitoring typically integrated in a 19" or 23" relay rack. DC power plant offerings support requirements for central office, cellular, microwave, subscriber loop, fiber, and various other customer premise-type applications. Key features and benefits include: • Custom-designed systems for any size application (10 - 10,000 amps) • Modular switched-mode rectifiers with unity power factor • Advanced switching technology for reduced component count • Hot swappable front-access design • Integral front-access distribution/circuit breaker panels • 10 KW rectifiers for high-capacity applications • N+1 redundant configurations for high reliability • Wide variety of relay racks and box bays • Wide range of supervisory control panels for control and monitoring • DC-DC converter systems also available For more information, visit the Argus Technologies Web site.

		Inverters Inverters convert DC power to AC power for telecommunications applications. Their primary use is to provide protected AC power in telecom central offices where most equipment is powered at 48 VDC via a rectifier and large battery bank. The inverter obtains 48 VDC power from the DC power plant and provides a protected AC source for critical AC-powered equipment. These modular inverters can be packaged with a DC power system to provide a highly reliable UPS solution for IT applications. Key features include: • 48 VDC input, 100-240 VAC field-selectable output • Rack-mountable 3.5 to 21 KVA systems • Scalable in 3.5 KVA modules for redundancy or capacity • Centralized monitoring system with LCD display • Optional hot swappable receiver cabinet • Optional maintenance bypass switches • Optional distribution modules • Complies with telecom industry standards/specifications For more information, visit the MGE UPS Systems Web site.

		Frequency Converters Frequency converters are typically used to convert power from 60 Hz to 50 Hz for domestic manufacturers who need to test their products at 50 Hz for shipment overseas. Converters are also available in 50–60 Hz, and 60–400 Hz (avionics) configurations. Both static (solid state) and rotary topologies are available in power ratings from single-phase 5 KVA to three-phase 500 KVA. A wide variety of field-adjustable input and output voltages are also available. Key features and benefits of the static systems include: • Rugged design (gasketed NEMA 12 enclosure) for industrial applications • Low parts count for excellent reliability • Microprocessor-controlled PWM inverter • Complete electrical isolation from the input power source • Optional battery back up • Complies with UL508 standards and OSHA regulations

		For more information, visit the Pacific Power Source.