With the Sion 3AE5, Siemens has developed its most compact vacuum circuit breaker for air-insulated medium-voltage switchboards up to 12 kV. Compared to its predecessor, the Sion 3AE5 is 30% smaller in volume. With less space required for switchboards, costs are also reduced. Circuit breakers are the most important elements of a switchboard, as they reliably switch all operational currents and residual currents, protecting the distribution network and the connected loads against short circuits.
Sion vacuum circuit breakers are used in medium-voltage distribution networks, for example, to provide switching functionality for outdoor lines, cables, transformers, generators, capacitors, filter circuits, motors and reactor coils. Thanks to a modular and flexibly adaptable design, the new vacuum circuit breaker is easy to integrate in all standard air-insulated medium-voltage switchboards.
Siemens used the latest technologies to reduce the dimensions of the Sion 3AE5 vacuum circuit breaker to a minimum. For all voltage levels, the dimensions are the same: 540 mm high by 447 mm wide by 390 mm deep (21 inches by 18 inches by 15 inches). This reduces the space needed in the switchboard and the amount of planning work. In addition, the user can choose between various pole center distances. Similarly, there is a choice of distance between the top and bottom connections. Switchgear manufacturers, therefore, can build a switchboard in various designs for different applications.
The new vacuum circuit breakers also contribute to a better ecological footprint. By using less material and more modern technologies, Siemens has reduced CO2 output during production by around 30%. Also, only minimum quantities of oil and lubrication grease are needed.
Siemens offers various accessory packs that are designed to simplify the installation of the circuit breakers in the cubicles. The packs include a withdrawable module, contact arms, fixed contacts and feed-throughs. It is also possible to expand the circuit breakers into devices with full communications capability by means of an external relay (for example, a Siprotec Compact 7SJ80 machine protective relay).
Siemens | www.siemens.com/powerdistribution
Circuit Breaker Analyzer Inc. introduces an iPod/iPhone-based application for testing circuit breaker performance based on vibration analysis.
Using the accelerometer inside every iPhone, new-model iPod and select industrial handheld tablets, the Circuit Breaker Analyzer captures vibration data in all three axes as well as across time. By comparing the newly acquired vibration signature to a database of more than approximately 200 known good profiles (KGP) and/or the vibration signature of the breaker’s “first trip” operation, pattern recognition algorithms can determine when changes in the “envelope” or shape of the vibration signature indicate a hidden mechanical problem that will eventually lead to breaker failure if left unchecked.
The product offers many benefits: simple operation; minimal training; portability; no modification of the circuit breaker is needed; no electrical connections required; removal of the circuit breaker from its mounting or cubicle is not necessary; testing can be performed during routine switching; and data is easily transmitted to a central location.
Circuit Breaker Analyzer Inc. | www.cbanalyzer.com
Hubbell Power Systems recently certified its Enhanced Varistor Protection (EVP) arresters to meet IEC Standard 60099-4 Discharge Class 3, rated up to 228 kV. The certification process verified the arresters under 12 tests, including residual voltage, long duration current, withstand heat dissipation behavior of test section and accelerated aging.
Hubbell’s EVP arresters are designed with a robust sealing system,
and the slotted tripod base gives flexible installation fitting 8.75-inch and 10-inch (22-cm and 25-cm) bolt circles. The resulting product optimizes the value of the grading ring.
Hubbell Power Systems www.hubbell.com
An eight-page, full-color brochure describes ABB’s broad range of life cycle services for optimum performance of the company’s measurement products. The brochure notes that a global network of ABB specialists is available to deliver local service and support. Included is support for measurement solutions such as flow, pressure, temperature, level, thickness, flatness and tension, valve automation, and liquid and gas analyzers.
Services detailed in the brochure cover start-up and commissioning; training; spare parts; repair and maintenance; calibration and verification; and migration, upgrades and replacements. Also discussed are service contracts and consulting. ABB will evaluate sites and recommend new technologies or upgrades to improve safety and increase competitiveness.
To download a PDF copy of “Measurement Products Services: Value Creation Through Optimized Services,” go to: http://goo.gl/hZo97.
ABB | www.abb.com
GE announces its CyberSentry SEM Security Event Manager, a cyber-security management and monitoring system specifically designed to help guard substation power system assets from issues or outages occurring as a result of malicious attacks or human error.
Operators are often unaware when a cyber attack has occurred, or when an error is made during routine maintenance. CyberSentry SEM continuously monitors the protection and control system for configuration changes and cyber security issues. If a problem is detected, the system provides alerts using its industry-standard Syslog technology. In addition to detailing the problem and providing a solution, the report equips operators with essential evidence, proving their protection and control systems are in compliance with cyber security audit requirements. CyberSentry SEM also can make legacy GE systems compliant to today’s cyber security regulations and standards.
GE Digital Energy | www.gedigitalenergy.com
Compact and lightweight, phase-angle meters in the new PAM400 range from Megger offer a cost-effective solution for a wide range of applications, including checking polyphase metering installations, testing protective relays, making comparative tests in electrical substations and verifying phase-angle deviation on power transformers.
The PAM410 provides facilities for accurately and quickly measuring the phase angle between two voltages, two currents, or between one current and one voltage. Voltages up to 500 V and currents up to 25 A can be connected directly to the instrument, and the current range can be readily extended by using external current transformers. The instrument displays phase angle directly, with a resolution of 0.1 degrees, no calculation or interpolation is needed.
The PAM420 provides phase-angle measuring functionality identical to that of the PAM410, but adds facilities for two-channel voltage, current and frequency measurement. It also has a high-accuracy timing function that can be triggered by voltage signals or volt-free contacts, and can measure times up to 999.999s with a resolution of 1 ms. The PAM420 has a built-in rechargeable battery, allowing it to be used in almost any location.
Supplied complete with a carrying case, test lead set and, in the case of the PAM420, a mains-operated battery charger, the new phase-angle meters feature robust construction to ensure long life even in tough operating conditions. They have a CAT III 500 V/CAT IV 300 V safety rating, except for the timer inputs on the PAM420, which are rated CAT II 250 V. Both models can be calibrated locally — full instructions are given in the user manual — which eliminates having to send them to a specialist calibration facility.
Megger | www.megger.com
Moxa is building upon the successful deployment of its DA-681 and DA-683 rackmount substation computers with its next-generation DA-685, which combines the I/O capacity of the DA-681 with the computing horsepower of the DA-683.
Designed as an all-purpose substation solution, the DA-685 industrial-embedded computer is capable of serving virtually any role in a smart grid application, regardless of what environmental or technological demands are required. Strong features like the Intel Atom D510 processor and a reliable fanless design have been merged in the DA-685 with a multitude of communications ports, including six RS-485 terminal block ports and two RS-232/422/485 software-selectable serial ports, and two USB 2.0 ports, along with six 10/100/1000 Mbps Ethernet ports. Storage expansion is made possible with a built-in CompactFlash socket and 1 SATA interface.
Precise time accuracy is essential for the synchronizing of event loggers and other substation IEDs. For that reason, DA-685 was engineered to support the IEEE 1588v2 standard as an ordinary clock, allowing for sub-microsecond syncing of IEDs. And the DA-685 is EMC Level 4 certified, so it will endure the extreme levels of electromagnetic interference commonly encountered in substations.
Moxa Americas Inc. | www.moxa.com
Electro Industries/ GaugeTech (EIG) announce that the Shark 200 multifunction power and energy meter now supports DNP Ethernet protocol and dual Ethernet cards.
Using EIG’s multi-session solution, the DNP 3.0 Ethernet provides up to five simultaneous connections of DNP 3.0 in addition to seven Modbus sessions (per card) and full customizable Web-server capabilities. Using two separate Ethernet cards allows users to send data to multiple networks from the same meter. Each card has its own unique IP address and MAC address. This is useful for data sharing conventions, utility check metering and network security applications.
DNP 3.0 is used extensively by the power utility industry worldwide to delivery power data to SCADA systems for controlling and managing electrical power transmission and distribution. With DNP Ethernet, the meter is ideal for providing telemetry for complex automation and control solutions.
Electro Industries | www.electroind.com
Cooper Power Systems’ CL-7 Smart Grid Ready regulator controls are able to integrate into an existing system providing monitoring, communications and voltage regulation of all three phases without additional controls. The CL-7 multi-phase controls expand on the intelligence of the single-phase CL-7 controls, combining smarter hardware and intelligent firmware to direct communications between a bank of up to three voltage regulators with advanced regulation modes and aptitude.
Featuring a common look and feel consistent with the Cooper Power Systems CBC 8000 capacitor control and Form 4D switchgear controls, the CL-7 controls can be used with single- and multi-phase pad-mounted and substation voltage regulators, or distribution voltage regulators. The CL-7 is suited for remote operation and retrieval of field measurement data for analysis by way of integrated volt/VAR applications. It integrates with a variety of communication radios, radio networks, SCADA and modems. The CL-7 also includes communication loss fail-safe modes for grid stability, unsolicited reporting of state change, field alarms
or threshold violations.
Cooper Power Systems | www.cooperpowersystems.com
This month Transmission & Distribution World magazine features Vacuum Circuit Breakers from Siemens, Circuit Breaker Apps, EVP Arresters from Hubbell Power Systems, Phase-Angle Meters from Megger and more.
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