Consulting-Specifying Engineer - December 2007 - (Page S28) Generator protection system is designed to protect and control medium to large AC generators. The device allows the monitoring of instabilities in the power systems and sees how instabilities are affecting the points of generation. The device exceeds the IEEE C37.118 standard for measurement devices and the device updates every 16.67 ms, which provides a millisecond recording of power system disturbances. The device supports the accumulated over/under frequency protection that monitors the amount of time a generator has been running at off-nominal frequencies and then triggers alarms. The device allows for integration of generator information into new or existing DCS or SCADA system. GEMultilin Circle 451 Dual-pole power clip connector is designed as a low cost interconnection between two perpendicular power bus bars. The connectors are designed for mating to a two-pole laminated bus bar or double-sided PSB tab, allowing for feed and return with one single socket. The device has no mating connector, as it accepts a solid 0.125-in. or 3-mm thick nickel- or gold-plated rectangular bus bar tab. Often used in N+1 rectifier, power supply and switching power supply applications, the power clips enable the connector to be blind-mated in the deepest racks. Anderson Power Products Circle 453 UPS systems are pure sine-wave output, line–interactive and are available in 600, 1,000, 1,500, 2,000 and 3,000 VA tower and 19-in. rack-mount models. The systems feature fully digitized, microprocessor–controlled automatic voltage regulation (AVR) at 50/60 Hz and use hot swappable, user–replaceable batteries. With RS–232, USB, and accessory–card communications slots, the series uses a management and monitoring software, capable of interfacing with all major operating system platforms. GE Consumer & Industrial Circle 455 UPS models have several new features including higher power factor (0.8), extended range automatic voltage regulation (AVR), improved battery management and built-in emergency power off (EPO) port. In addition, the unit ships with 4-post mounting rails and easily convert from a tower to a rack configuration. These units supply reliable, network-grade power making them suitable for servers and voice and data networks. The new units replace the manufacturer’s legacy 5000 VA models. APC/MGE Circle 456 Ground fault sensing module functions independently with a magnetic branch circuit breaker and monitors the electrical circuit by using an external differential current transformer. The line of sensing modules is rated from 1 amp to 15 amps. with circuit-carrying conductors from 1 to 3 poles. The line comes with an automatic or manual safe-start reset feature and when mounted the enclosure achieves a UL NEMA 4X rating and is UL 1053 compliant. GFCI Solution by Bryant Circle 457 Spring contact with a single pole is vibration-resistant and allows for a solder-less termination. The device allows the connection of pinned components and individual solid wires ranging in size from 14 to 18 AWG, or standard wires with ferrules. The device also can withstand soldering temperatures as high as 290°C for 90 seconds and the device covers only 3.5 sq. mm. RIA Connect Circle 452 Serial control switch relay (SCSR) facilitates remote control and monitoring of circuit breakers, while retaining local control through a manual trip/close handle. An addressable network device with certified DNP 3.0, the SCSR combines the functions of various other devices and provides remote trip-coil monitoring (single or dual), sequence-of-events reporting, system battery monitoring, and self-diagnostic reporting. Baud rate can range from 1,200 to 19,200. Transient protection meets the standards of IEEE C37.90.1 and IEC 61000-4-4. Switching action is 45-degree spring return to normal. Mounting can be panel or 3-hole. Electroswitch Circle 454 28 | PURE POWER // WINTER 2007
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