Siemens New Generator Circuit-breaker Offers Advanced Customization
November 15, 2019
Siemens HB3-Compact generator circuit-breaker
With its HB3-Compact generator circuit-breaker, Siemens provides a unique generator circuit breaker solution to the most challenging constraints. Offering more customization options, the generator circuit-breaker can be mounted either vertically or horizontally, and its phase-to phase spacing and phase height axis can be adjusted to match perfectly to the existing busbar connection points. The circuit-breaker can also be fitted with integrated line disconnecting switch and earth disconnecting switch on generator side and/or on transformer side. These features make it especially valuable for retrofit applications in power plants, where the highest security of supply is crucial, and space is limited due to existing installations.
With the increasing percentage of renewable power, reliable protection technology is needed to handle higher voltages resulting from temporary higher power infeed, for example. Generator circuit-breakers are key components for improving the reliability and availability of power plants. They protect equipment such as generators and transformers against overload or short circuiting by disconnecting and connecting them from and to the grid.
With its adaptable design and installation, the new HB3-Compact model offers power plant operators the greatest degree of flexibility when designing a new plant or replacing outdated equipment. It has a simplified footprint, which facilitates the designing and dimensioning of the switchgear. The supporting frame design can be customized, meaning the phases can be fitted in one common or an individual frame design to enable splitting of the phases, for example when installing in different rooms.
Besides this flexibility in design, HB3-C also supports plant operators in saving costs during project implementation and operation. Thanks to the unit’s compact size, its transport, erection and commissioning are simplified and outage times for the installation of a new circuit-breaker can be kept to a minimum. The maintenance-free vacuum switching technology used in the switchgears eliminates the need for gas handling, guarantees minimum maintenance costs and increases the recycling rate of the HB3 systems. The HB3-C is part of the Siemens Blue Portfolio, combining high-tech performance with environmentally safe materials and work procedures.
Highly compact design
Up to 75% OPEX savings due to vacuum technology performance
Up to 110 kA breaking capabilities
Up to 15,000 A rated nominal current
Up to 24 kV rated nominal voltage
Maintenance-free up to 10,000 interrupting cycles at current of 15 kA
Vertical and horizontal installation
Common and individual supporting frame design
Can be delivered with integrated line disconnecting switch, earth disconnecting switch on generator side and/or transformer side
Based on proven HB3 generator platform with vacuum switching tech
Littelfuse, Inc.,, an industrial technology manufacturing company empowering a sustainable, connected, and safer world, recently announced the launch of a surge protective device (SPD) selection guide that sizes SPDs to achieve the best level of protection for a system based on specifications provided. Surge protective devices need to be sized correctly. If they are sized too low, the system could be susceptible to temporary overvoltages as well as cause a decrease in the life expectancy of the SPD.
To protect people from injuries caused by electricity, control panels that are used in the U.S. must be designed so that they ensure protection against direct contact. The U.S. standards therefore specify that the enclosure doors must be locked in accordance with specific guidelines, but that they must be accessible for maintenance and service by qualified personnel.In this series Siemens will provide two panel building tips articles for the remainder of 2020. Part 1 forcuses on Door Interlocking Requirements According to US Standards.
These branch circuit breakers are available in two terminal configurations: standard box terminals that accept multiple conductors and ring-tongue terminals. All breakers mount on standard 35 mm DIN rail. Bus connectors and feeder terminal facilitate mounting and wiring of multiple miniature circuit breaker arrays in control panel assemblies. Breakers can also be reverse fed.
Yokogawa Test & Measurement Corporation recently announced that it has developed the 760903 current sensor element for use with the company’s world-class power measurement solution, the WT5000 precision power analyzer. The 760903 current sensor element includes a number of new features that simplify the setup and use of external current sensors. This new product will go on sale on April 6.
Today’s market demands unprecedented efficiency from products designed to be flexible and dependable. One true measure of effective industrial performance is the ability of technology to produce real competitive advantages. With a comprehensive industrial control technology offering, Siemens provides just that at practically every level of your facility.
TE Connectivity has launched its Raychem smart RSTI-VS separable connector with voltage sensor, which can be used for grid monitoring and advanced earth fault and short circuit detection in IEC markets. Together with grid monitoring devices such as Kries’ IKI-50, distribution network operators can deploy condition monitoring, advanced fault detection and failure prediction in their networks.
This webinar presented by Beth Lessard and Keith Cordero will be highlighting three Panduit solutions that will optimize network equipment and cabling to ensure that your spaces are efficiently and properly managed to support ever-evolving business needs of today and beyond. Products that will be featured include PanZone TrueEdge Wall Mount Enclsoure, Cable Managers, and Adjustable Depth 4-Post Rack.
Siemens: SIMOVAC Non-Arc-Resistant and SIMOVAC-AR Arc-Resistant Motor Controllers
The Siemens SIMOVAC medium-voltage non-arc-resistant and SIMOVAC-ARarc-resistant controllers have a modular design incorporating up to two 12SVC400 (400 A) controllers, housed in a freestanding sheet steel enclosure. Each controller is UL 347 class E2, equipped with three current-limiting fuses, a non-load-break isolating switch, and a fixed-mounted vacuum contactor (plug-in type optional for 12SVC400). The enclosure is designed for front access, allowing the equipment to be located with the rear of the equipment close to a non-combustible wall.
Power is vital to production, and well-designed control cabinets are key. Allied Electronics & Automation offers a comprehensive collection of control cabinet solutions including PLCs, HMIs, contactors, miniature circuit breakers, terminal block connectors, DIN-rail power supplies, pushbutton switches, motor starters, overloads, power relays, industrial Ethernet switches and AC drives engineered to keep your operations running safely, reliably and efficiently.
LS ELECTRIC America will showcase switchgear, switchboard and transformer solutions for data centers at Yotta 2026, from September 28–30 at Caesars Forum in Las Vegas. Visitors at Booth 1020 can explore LS ELECTRIC’s MCSG Metal Clad Switchgear, Susol UL low-voltage arc-resistant switchgear, Susol UL891 Switchboard Solution and Beyond X Cast Resin Transformer. LS ELECTRIC’s MCSG… Read More…
Mouser Electronics, Inc. is now shipping the new Pluto Safety programmable logic controllers (PLCs) from ABB. The Pluto Safety PLCs feature a powerful, user-friendly, and cost-effective design for industrial machine safety applications. The ABB Pluto Safety programmable logic controllers, available from Mouser, are compact and easy to program via the accompanying Pluto Manager software, making… Read More…
