Three-phase is as low as 60% residual voltage
Single-phase is as low as 40% residual voltage
400V：50 – 200kVA、300kVA 、600kVA 、900kVA 、1200kVA 、2400kVA
Larger capacity, customized 208V, 480V 3ph 50Hz
The CoEpo AVC Active Voltage Conditioner is an inverter-based system that protects sensitive industrial and commercial loads from voltage disturbances. It provides fast, accurate voltage sag and surge correction, as well as continuous voltage regulation and load voltage compensation.
Three-phase is as low as 60% residual voltage
Single-phase is as low as 40% residual voltage
| phase | Utility side(input side) | Load side (output side ) | Corrected maintenance time | ||
| Voltage surplus | Corrected voltage amplitude | ||||
| 3 | 70-130% | 100% | continuation | ||
| 3 | 60% | 100% | 30 seconds | ||
| 3 | 50% | 90% | Maximum inverter voltage528；528÷3.3=160；160/400=40%; | ||
| 1* | 55-130% | 100% | continuation | ||
| 1* | 40% | 100% | 30 seconds | ||
400V：50 – 200kVA、300kVA 、600kVA 、900kVA 、1200kVA 、2400kVA
Larger capacity, customized 208V, 480V 3ph 50Hz
Factories, facilities, and commercial operations that depend on a good quality power supply so they can produce quality products without interruption need the AVC（active voltage conditioner）
Single Line Diagram
AVC （active voltage conditioner）monitors the input voltage at all times, Once the voltage deviates from the set point, within 3 milliseconds, it controls the IGBT inverter to add appropriate compensation voltage to the main loop through the series injection transformer, and adjusts the load end voltage to the rated value extremely quickly, thus eliminating the impact of the voltage drop from the input end of the grid on the load.
During this time, energy is extracted from the grid
When the voltage sags, some power is often left in the grid to be used.
AVC（active voltage conditioner） does not contain energy storage components, and the energy required for voltage compensation is absorbed from the power grid.
The three-phase equilibrium overvoltage amplitude is 110%
Electric energy input = electric energy output, energy conservation
AVC（active voltage conditioner） will automatically switch to the power supply by bypass when its equipment fails.
AVC（active voltage conditioner） in bypass mode, the inverter does not generate compensation
voltage, and the utility power directly supplies power to the load by injecting the secondary winding of the transformer without power failure.
Full correction
Three-phase sags down to 60% retained
Single-phase sags down to 40% retained
Continuous “ONLINE” adjustment, with the goal of a 100% nominal voltage output.
Over– and under-voltage regulation
Voltage vector phase angle error correction
Voltage unbalance correction
| Technical characteristics | User’s benefit |
| No battery, flywheel, and other energy storage components | Maintenance-free, low operating cost, no
environmental pollution |
| Strong overload capability and dynamic response capability | Perfect for protecting impact loads. |
| High reliability | The failure rate is low, and the device itself will not cause load power failure. |
| Small occupation space | It can be installed in the distribution room or clean room to save a lot of land cost. |
| High efficiency and low loss | Long-term operation saves a lot of power loss |
| Operate in four quadrants | Suitable for regenerative loads, such as the following row elevators |
| AVC: 160~6400 KVA | static state UPS | |
| Online voltage regulation | Yes | Yes |
| Spare part | Modular design means high versatility of parts | More spare parts need to be purchased |
| Voltage suitability for supply voltages beyond 380 to 480V | Suitable for 200V to 35kV | Full power input-output transformers are required.
Taking up additional space and making the efficiency lower |
| Power-off protection | No, but power outages are very rare, so there is no need to add a lot of cost and complexity | The batteries should be
checked for proper functioning, especially considering their age. |
| Energy backfilling | Yes, AVC can support energy backfilling loads
|
The load energy backfill will trip the UPS and fail to support the load |
| Harmonic wave | The AVC absorbs pure sine waves and does not pollute the power supply system | A typical UPS uses a 6-pulse rectifier to draw harmonic-rich current, which can cause problems in the power supply system, such as overheating the transformer |
| Downstream fault clearing capability | Superior downstream fault-clearing capability | Poor tolerance to downstream faults |
| Environmental impact (green level) | Very slight environmental impact due to
high efficiency, long life, and little maintenance
|
Heavier environmental impact due to low efficiency and toxic substances such as lead, acid, and plastic in batteries. Plus, battery disposal and recycling issues. |
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