AVR / VOLTAGE REGULATION
Find the right AVR for your equipment.
From individual electronics to production machinery, choose voltage regulation by the equipment you run—not a long list of model numbers.
AVR / APPLICATION GUIDE
What are you powering?
Three starting points, with sample capacities from our supplier ranges. These are examples—not sizing recommendations for every machine.
SINGLE-PHASE AVR
Individual equipment
SAMPLE CAPACITY / 0.5–3 kVA
Computers, point-of-sale systems, and small electronic instruments.
Match voltage and output tolerance. Use a UPS as well when battery backup is needed.
SERVO-TYPE AVR
Larger single-phase loads
SAMPLE CAPACITY / 5–30 kVA
Single-phase workshop equipment, refrigeration, and larger equipment groups.
Motors and compressors need allowance for starting current. Check the actual equipment load.
THREE-PHASE AVR
Industrial machinery
SAMPLE CAPACITY / 50 & 100 kVA examples
Production lines, metalworking machinery, and large electromechanical equipment.
Confirm supply voltage, phase configuration, inrush current, and bypass requirements.
Before you choose
Check three things: your equipment’s voltage and phase, its running and starting load, and how far the incoming voltage fluctuates. Capacity alone does not determine compatibility.
ENGINEERING / SAFETY
Protection features are model-specific.
An AVR regulates voltage; the complete installation provides system safety. Supplier literature lists different protection functions by series, so confirm the actual unit and its settings before specifying.
01 / VOLTAGE
Over- and under-voltage
Some listed families provide an alarm or protective response when voltage moves outside the usable range. Ask for trip thresholds, delay settings, and reset behavior for the selected unit.
02 / FAULT CONDITIONS
Current and phase protection
Certain three-phase models list overcurrent, phase-failure or phase-sequence protection, plus fault indication. Confirm which functions are included on the quoted model.
03 / OPERATION
Transfer, isolation, service
Where a bypass or commercial-power pass-through is specified, verify its switching method, interlocks, safe isolation procedure, and maintenance requirements.
Standards & installation: what to verify
For machinery or integrated control panels, ask the project engineer which requirements apply—for example IEC 60204-1 for electrical equipment of machines, or IEC 61439 for low-voltage switchgear and controlgear assemblies. These are application references, not a claim that every AVR model is certified to them.
Request model-specific datasheets, wiring diagrams, protection settings, and declarations or test documents. Coordinate earthing, upstream/downstream protective devices, ventilation, clearance, and local electrical-code requirements with a qualified engineer.
Need help matching a machine?
Send the equipment nameplate and supply details to your dealer or our technical team. We’ll help confirm the appropriate capacity and configuration.
Ask a technical question