An expanded line

Advance Power introduces rectifiers and switch-mode power supplies Advance Power Inc. has introduced a power shelf, a new line of rectifiers designed to be housed in the shelf and multi-output, switch-mode power supplies.

The Solon, Ohio-based company's MR-30 power shelf houses as many as five hot-swappable 27/54 V, 400 W rectifiers. The shelf, which is 19 inches high and 12 inches deep, also holds a fuse panel and a load distribution unit.

In addition, users can configure the MR-30 for four hot-swappable 400 W rectifiers, a fuse panel, a load distribution unit and two hot-swappable, 60 W ring generators.

Also available is a 4000 W, 19-inch power shelf, which can hold as many as four 25/54 V, 1000 W rectifiers.

The 400 W rectifiers--the TWF0400, the TWF1000 and the TRF5600--all feature an option for power input on the side or rear. Each rectifier has a fuse panel and load distribution unit in the front panel. These rectifiers allow for three-, four- and five-rectifier configurations as well as configurations with or without signal and ring generators.

Multiple output versions of these rectifiers are also available. The Kestrel VWF350 switch-mode power supplies deliver 350 W of continuous power and are available with as many as five fully regulated outputs.

These power supplies are power factor corrected and feature universal input along with integral fan cooling, IEC or screw terminal input connections and 200% current surge capability for powering disk drives. All outputs have current limit and overvoltage protection.

A 48 VDC input version, which will feature an input range of 40 to 75 VDC, will be available in December.

Advance Power Inc., a division of Advance International Group Ltd., tests its rectifiers and power supplies in an ISO 9001-certified facility. All units are approved to international standards.

Power Designer is an object-oriented modeling tool for power system design. Users work with a GUI to prepare on-line schematics. During simulation, schematics become animated. From these schematics, users can perform tasks such as AC and DC calculations, power factor, single and balanced three-phase AC loads, and capacity sizing of batteries, gensets and rectifiers. Powertechnic

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The Compact Power Rackline sealed valve-regulated lead acid battery is available in 12 V monobloc at 25, 50, 100 and 150 Ah. It features a front-access terminal and is made with flame-retardant UL 94 FVO halogen-free plastics. The battery is designed for 15 years of operation, and assembly in 19 in., 23 in. and ETSI cabinets is possible. Accu Oerlikon

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The 25A rectifier features a unity power factor, efficiency of greater than 90%, wide AC input range of 150 to 275 V and natural cooling to 50 C. It is suitable for hot-plug insertion. The MiniCSU provides automatic battery equalization and temperature compensation, a battery events log, displays of rectifier alarms and an alarm history log. Rectifier Technologies Pacific Pty. Ltd.

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These RF coaxial protectors are designed to protect wireless applications from lightning-related surges. The TQP quarter wave stub features let-through voltage of less than 50 V, 70 to 90 dB attenuation of the lightning strike and the ability to survive multiple high-energy strikes. The TBBP broadband protector's construction prevents arcing or flashing when exposed to multiple strikes. Both units are built into brass housings. Cutler-Hammer

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This continuous power system integrates power conditioning, UPS and standby generator in a single system. The system consists of a rotary filter, induction coupling and a diesel engine. The system is normally installed at low-voltage level, but when the rating needed is more than 3 MVA, the system is integrated in the high-voltage distribution, resulting in both input and output power at high voltage. The system features a small footprint and does not inject harmonic currents into the mains. Holec Power Protection

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The ClimSel thermal battery is used for cooling telecom equipment. It can be applied as a backup system to various other main cooling systems or as a complete cooling system based on low-voltage DC. It has a phase change temperature at 32 C and a storage capacity of 395 Wh/m. Climator AB

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The Intergy series of rack power systems features four different system sizes. The software-configurable systems are based on rectifiers using a patented Swichtec technology. This technology offers features such as constant power output and an optimized efficiency characteristic. The systems are preconfigured, and all system parameters are stored in transferable configuration files. Rectifiers have a software-controlled, one-step installation and setup. Swichtec Power Systems Ltd.

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The Tele-Guardian incorporates all functions of six power conditioning devices in one unit. A shielded transformer isolates equipment from surges and RFI/EMI noise while circuitry assures a regulated AC power output. TVSS filters protect against high-energy surges such as lightning strikes. The snap-in microprocessor control power and filter assembly modules prevent under- and over-voltage disturbances. Phoenix Power Systems Inc.

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New enhancements to the KM6-II subrack system include an embedding kit, a KMS subrack front panel frame, and 4 U and 7 U subrack assemblies. The embedding kit allows integration of 19 in. equipment with other mounting standards in the same subrack. It also permits the use of 19 in. pluggable modules and subracks without a dedicated 19 in. rack or enclosure. The KMS subrack front panel allows 3 U single Eurocards with front panels to be mounted in a 19 in. enclosure. Vero Electronics Inc.

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The Helios mini system 500/48 is designed around a 250 W rectifier that features power factor correction, high density, high efficiency, convection cooling and a compact size. It can provide up to 500 W of power. The system integrates as many as three 250 W rectifiers, a controller and a distribution module for applications such as embedded systems and access products. The system offers a mean time between failure of more than 350,000 hours. Nortel

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This new range of UPSs includes the Pulsar series of single phase UPSs. Also available is the Comet group, which includes single- and three-phase UPSs. The Galaxy PW range features three-phase UPSs. The Topaz line offers hot-swappable, distortion-free sine wave inverters. The sine wave THM total harmonics conditioner eliminates disturbances created by harmonics currents. MGE UPS Systems

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The MPS 2000 on-line UPS system features pure sine-wave output and zero transfer time. It protects systems by completely isolating them from all AC line power problems. The system constantly converts incoming AC into filtered DC power and then resynthesizes it to perfect sine-wave AC power. Six diagnostic indicator lights keep users informed of UPS activity. It costs $1999. Tripp Lite Power Protection

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The FA Series valve-regulated lead calcium batteries are designed for front-access to the battery terminals for installation and maintenance. The design maxi

The CFM 12 V, 29 AHz (FR) battery features fire-resistant case material and does not require an external metal case. The battery will provide more than eight years of life at 25% C in standby applications. It is capable of hundreds of discharge/charge cycles. Eagle Picher Industries

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The FM8515C high-power optical meter for CATV and long-span telephony optical signal transmission is designed for use with signals generated by Erbium doped amplifiers where power levels are up to 25 dBm. The meter features reference store, 0.01 dB resolution, measurements in dBm, dBr and milliwatts, and a dynamic range greater than 60 dB. Although it is calibrated for 1310 and 1550 nm wavelengths, it can also make 850 nm measurements. It costs $740. Wilcom Inc.

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This phase-controlled rectifier/battery charger is designed for low production runs with varied input/output specifications. The rectifier is used with extended run time battery systems. DC output voltage specifications are designed from 12 to more than 500 V with corresponding output current from 50 to 2.5 A. IntraPack Corp.

The Lectro Zero Transfer Time/ Plus UPS system contains a microprocessor and a ruggedized transformer. For use in cable and broadband networks, the system is available in 120 VAC, 60 Hz and 60/90 VAC output versions. The digital microprocessor offers improved brownout detection. Analog meters have been replaced with an LCD panel. The Lectro ZTT/Plus is capable of true digital root mean square measurement. Its battery-friendly topology adjusts charging levels according to environmental conditions. Exide Electronics

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The PM1450 series of hot-pluggable rack systems can provide a complete turnkey system for ease of power integration in N + 1 redundant, parallel, scalable or other multiple power supply configurations. The racks can be used with either isolated front end or multiple-output logic power supplies. Rack systems come in 19 and 24 in. configurations. The racks are built with Elcon top and lower drawer connects and are available in two different external connection configurations. Pioneer Magnetics

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The Rack-M high-power hot plug rack system is designed to provide bulk power for distributed power architecture or fault-tolerant, N + l redundant applications. The system uses 500 W DC power modules in a low profile 2 U or 3 U rack. It provides for rack paralleling of DC power supply modules and automatic current sharing for load distribution. Output voltages are 24, 28, 36, 48 and 54 VDC, and input is 90 to 264 VAC with 0.99 power factor correction. Ripple and noise is 1% peak-to-peak. Omega Power Systems Inc.

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