AVE
The AVE is based on EM Energy Solutions’ revolutionary technology of using electromagnetism to protect against damaging overvoltages. Conventional surge protection devices are too slow to react to transient overvoltages, and often let through 4-5 times nominal voltage, while the AVE reacts at the speed of the current.
AVE has a ground fault detection system that instantly informs operators in case of a ground fault and lets the operator quicly locate and remove faults before damage occurs to critical equipment and processes.
Operation modes
Transient protection mode – The AVE will protect electrical equipment from damaging transient overvoltages and give both audible and visual alarm during a ground fault
Ground fault location mode – This function activates a puls circuit, which makes it much easier to trace a ground fault to its origin. The current pulses will be detected with a clamp meter around the cable feeding the fault.
Customer benefits
- Transient overvoltage protection
- Continue operation and locate faults while the system remains online
- Enhanced personnel safety with reduced risk of arc-flash
- Ground fault current limiting
- Comprehensive alarm and monitoring system
- Ground fault detection
- Increased production output
- Cost-effective solution
SCHEMATICS
Industry Challenge
Today’s use of electronics and power electronics is setting higher demands for power quality. Industry is experiencing considerable costs in terms of increased power bills, reduced operational lifetime, and damage to electrical equipment. Issues facing industrial accounts as well as residential are adversely affected by voltage imbalances, transient voltage surges and harmonics. These voltage anomalies cause premature failure of electrical equipment, electrical costs increase, and increases in carbon emissions. Imbalanced voltages can be caused by loading at the plant or from the Utility service, which will cause premature failure of components and higher operating costs.
These are large and expensive problems in industry. Electric motors will operate at higher temperatures and lower efficiency, which results in significantly reduced life expectancy and increased power consumption.
Technology
EM Energy Solutions’ revolutionary patented technology for transient protection ensures optimal protection against transient overvoltages.
AVE is an AHRGS (Automated High Resistance Grounding System) that reacts to any voltage to ground imbalance and counteracts transient overvoltages with the speed of the current.
By constantly logging the supply transformers’ phase to ground voltages and using this to control single-phase variable or multi-tap transformers, one can achieve optimal protection against transient overvoltages. A state-of-the-art controller controls the variable transformers. The system has an operator panel for control functions and display of operational status together with a comprehensive alarm system that notifies operators about various events like ground faults, transients, and high harmonic distortions.
Conventional transient protection technology
Conventional surge protection devices are too slow to react to transient overvoltages and often let through 4-5 times the nominal voltage before they react
Key features
- State-of-the-art single phased variable isolation transformers
- Advanced Power Quality Analyzer, including webserver, HMI-panel, and energy management software.
- Alarms for various events like ground faults, transients, voltage imbalance, high harmonic distortions, etc
- Extremely fast transient suppression
- High-resolution HMI panel for configuration, monitoring, and alarm display
- Simple and fast installation
- Low maintenance
Proven technology
The Automatic Voltage Equalizer has been through an extensive testing program, including laboratory testing at PNDC (Power Networks Demonstration Centre), and the test report is available on our website under Downloads. We also have successful installations in several countries international.
Case Studies
Pictures show AVE installed at Samsung Heavy Industries to optimize power quality at one of their robotic welding factories inside the shipyard.
A significant welding quality improvement occurred the instant that the AVE was activated. The arc-flare was noticeably shorter, and the operators reported that even the machine’s sound was different. In addition to greatly improved welding quality, Samsung Heavy Industries will, from now on, also benefit from an extended lifetime of machines and components such as welding inverters, and a more reliable, cost-efficient, and safe electrical system.
Applications
The AVE is designed for use in a wide range of industries. With AVE installed, all types of three-phase power systems are optimized and protected. Each power transformer requires one AVE. The AVE provides transient voltage spike protection, arcing ground fault protection, phase voltage balancing, and arc flash mitigation. Cost and energy saving by installing AVE typically has a payback time in one year or less.
AVE Models
The AVE comes in five different model types in various sizes depending on transformer size, voltage class, type of installation and available space for installation
AVE
The AVE is based on EM Energy Solutions’ revolutionary technology of using electromagnetism to optimize the distribution system at the speed of the current. AVE is designed for optimal transient overvoltage protection. With the use of motor-controlled variable isolation transformers, adjustments of individual phase voltage is possible.
AVE Technical Specifications
AVE Model Selection
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AVE – Model Selection Model selection is based on system voltage and transformer kVA |
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| Line Voltage | Capacity kVA | Distribution Amperage | Cabinet Size |
AVE module number G: Grounded system UG: Ungrounded system |
| 250 | 3000 | 6900 | 800 x 1200 x 400 | AVE-250(U)G3000 |
| 250 | 6000 | 13800 | 800 x 1200 x 400 | AVE-250(U)G6000 |
| 480 | 3000 | 3600 | 800 x 1200 x 400 | AVE-480(U)G3000 |
| 480 | 6000 | 7200 | 800 x 1200 x 400 | AVE-480(U)G6000 |
ED: External Disconnect 4G: 4G router F: Floor mounted
AVE FIXED
AVE Fixed is a more cost-friendly solution but can still pack a punch. It uses fixed high-quality isolation transformers with PLC controlled variable tapping. Any steady-state voltage imbalances will be counteracted with the variable tapping functionality.
AVE Technical Specifications
ave fixed Model Selection
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AVE – Fixed Model Selection Model selection is based on system voltage and transformer kVA |
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| Line Voltage | Capacity kVA | Distribution Amperage | Cabinet Size |
AVE module number G: Grounded system UG: Ungrounded system |
| 250 | 1200 | 2700 | 600 x 1000 x 400 | AVE-F250(U)G1200 |
| 250 | 3000 | 6900 | 800 x 1200 x 400 | AVE-F250(U)G3000 |
| 250 | 6000 | 13800 | 800 x 1200 x 400 | AVE-F250(U)G6000 |
| 480 | 1200 | 1400 | 600 x 1000 x 400 | AVE-F480(U)G1200 |
| 480 | 3000 | 3600 | 800 x 1200 x 400 | AVE-F480(U)G3000 |
| 480 | 6000 | 7200 | 800 x 1200 x 400 | AVE-F480(U)G6000 |
| 690 | 1200 | 1000 | 600 x 1000 x 400 | AVE-F690(U)G1200 |
| 690 | 3000 | 2500 | 800 x 1200 x 400 | AVE-F690(U)G3000 |
| 690 | 6000 | 5000 | 800 x 1200 x 400 | AVE-F690(U)G6000 |
ED: External Disconnect 4G: 4G router F: Floor mounted
AVE MINI
AVE mini is a more cost and space-effective solution for lower range transformers between 400 and 1200 kVA. The same electromagnetic principles as used on the standard AVE are applied. The compact design reduces the challenge in terms of available space. It is fitted with high quality single-phase transformers utilizing controller regulated variable tapping. The unit has the integrated power quality meter as optional. The operator can obtain necessary system information from the HMI panel located in the front door. AVE mini also comes in single-phase solutions, making it suitable for smaller housing areas.
AVE MINI Technical Specifications
Model Selection
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AVE – Mini Model Selection Model selection is based on system voltage and transformer kVA |
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| Line Voltage | Capacity kVA | Distribution Amperage | Cabinet Size |
AVE module number G: Grounded system UG: Ungrounded system |
| 250 | 400 | 900 | 600 x 760 x 350 | AVE-M250(U)G400 |
| 250 | 800 | 1800 | 600 x 1000 x 400 | AVE-M250(U)G800 |
| 250 | 1200 | 2700 | 600 x 1000 x 400 | AVE-M250(U)G1200 |
| 480 | 400 | 480 | 600 x 760 x 350 | AVE-M480(U)G400 |
| 480 | 800 | 950 | 800 x 1000 x 400 | AVE-M480(U)G800 |
| 480 | 1200 | 1400 | 800 x 1000 x 400 | AVE-M480(U)G1200 |
ED: External Disconnect 4G: 4G router F: Floor mounted