Remote - Winter 2013 - (Page 28)

Onsite Power - Products & Services Automatic Controls Provide Operation Redundancy for On-Site Power Systems All Russelectric on-site power control systems are equipped with dual PLC controls for automatic generator set starting and stopping, status and alarm annunciation, synchronizing and priority load control. A primary PLC controls system operation with a backup PLC running the same program as the primary. If the primary PLC fails, the backup PLC assumes operational control. If both PLCs were to fail, a manual control system allows operating personnel to synchronize and parallel the generators onto the bus, as well as to add and shed load. This built-in redundancy is included in all Russelectric on-site power control systems. The instruments and other devices that facilitate manual operation (including generator main bus volt meter, frequency meter and synchroscope) are mounted on a hinged panel that can be specified to swing either left or right for easy viewing from adjacent control cubicles during manual operation. Russelectric custom designs and builds power control and synchronizing switchgear systems in low and medium-voltage ratings for single and multiunit on-site power generators. In addition to emergency power, system designs may include a variety of control functions such as peak shaving, load curtailment and utility paralleling for both open-transition transfer and live-source closed-transition transfer. Closed-transition transfer allows retransfer and system testing without disturbing the load. Prime power/cogeneration systems are also available. Other features, such as load demand control for fuel management, are available. Systems include sensors to monitor volts, amps, watts, frequency, and other pertinent electric power data of individual generator sets and the overall system. Large LCD touchscreen operator interface is included. Custom system integrating SCADA and simulation are available as options. All systems are UL listed and are designed and built in accordance with ANSI, IEEE, and NEMA standards. Cummins Power Generation Introduces Hybrid Power Systems for Telecom Cummins Power Generation has signed a five-year agreement with Heliocentris, a specialist in energy efficiency and clean power solutions. Under the agreement, Cummins Power Generation will incorporate Heliocentris' networked energy management technology into a hybrid power system designed to provide power for cellular base stations and other telecom applications. The Cummins telecom hybrid power system will employ a diesel generator set, storage batteries and networked energy management technology to supply power to cellular sites. Combining generator sets that are specifically designed for telecommunication cellular sites with a hybrid system that intelligently cycles storage batteries and can integrate additional power components (such as photovoltaic modules, wind turbines and fuel cells) ensures a continuing reduction of fuel consumption and operating and maintenance costs. The resulting hybrid system reduces the operational expense for cell sites by up to 70 percent and also reduces the carbon footprint to power a cell site. Diesel generators are the preferred source of electrical power for off-grid and standby power applications such as cellular base stations because of their durability and reliability. At the same time, environmental concerns, rising fuel costs and operating expenses are driving customers to look for more sustainable alternatives. Cummins Power Generation's hybrid solution 28 www.RemoteMagazine.com is designed to deliver maximum up-time at the lowest cost of ownership. The hybrid system will integrate into a cellular provider's network operations and also allow the integration of renewable energy technology such as solar, wind or fuel cells. AC-DC Power Supplies Designed for Harsh Environments Schaefer Inc. has introduced its TER series of rugged, ultra low-profile ac-dc power supplies designed for heavy industrial applications. All units are sealed in a heat-conducting potting material and are specifically designed for projects that demand reliable and shock resistant power supplies in the harshest operating conditions. The TER family of 250 W, 1,000 W and 1,500 W converters (models TER-250, TER-1000 and TER-1500) features high power density, power factor correction, compact packaging and high efficiency. Additional features include universal input, output voltage adjustment, parallel/series operation, protection/alarms for the input/output signals and single or multiple outputs that are individually isolated. The rugged design includes a wide operating temperature range of (-40°C to 85°C) with an optional (-50°C to 85°C) and units are compliant to EN55022 Class A (Class B w/filter). All this capability combined with COTS pricing makes them well suited for a range of applications including oil/gas, utility, telecommunications, data communications, transit/rail, factory automation, process control and location/navigation. Moore Industries Adds Low Voltage Power Supply Option To Products Suited for Oil and Gas Wellheads Moore Industries-International, Inc. has added low voltage power supply options to many of its products. This addition makes these products suitable for use in remote applications such as oil and natural gas wellheads where power supplies are limited and harsh environmental conditions often exist. Products that have recently added a 12 Vdc power supply option include the CPA 4-Wire PC-programmable alarm, CPT 4-Wire PC-Programmable signal isolator and converter, ECA 4-Wire current and voltage alarm, ECT 4-Wire signal isolator, converter, repeater and splitter, and the TMZ 4-Wire PC-Programmable MODBUS temperature transmitter and signal converter Moore Industries' line of low voltage instruments addresses a growing demand by customers with solar and battery sources as their primary means for operational power in remote areas. All of these products are designed for harsh conditions. They are suitable for extreme ambient operating conditions and offer RFI/EMI protection against the harmful effects of radio frequency and electromagnetic interference. Power Chip's Ultra-Low Quiescent Current Extends Battery Life in MCU-Based Systems Texas Instruments (TI) has introduced a multi-mode power management unit (PMU) that enables ultra-low, total system quiescent current as low as 100 nA, which minimizes power consumption in battery-powered, microcontroller-based water and gas meters and other industrial applications. The TPS65290 PMU manages all power requirements in the system, including load conditions from 100 nA to 500 mA. The TPS65290 PMU incorporates three factory configurable "always-on" power supplies for microcontroller (MCU) sleep mode and an automatic function for choosing power from either the input voltage or buck-boost converter. In addition, the http://www.RemoteMagazine.com

Table of Contents for the Digital Edition of Remote - Winter 2013

Editor’s Choice
Message Oriented Middleware - The Future of SCADA
Enhanced SCADA Access and Big Data Lead to New Analytics & Optimization Capabilities
Approaches to Powering Telecom Sites
Satellite Communications for Water Metering and Other Water Applications
Remote Magazine Launches Internet of Things North America
Geospatially Integrated Surveillance Systems
Tier 1 Operator Case Study: Intelligent Site Management
SCADA - The Brain of the Smart Grid
SCADA
Networking
Security
Onsite Power
Industry News

Remote - Winter 2013