Configuration choices
- Control requirement
- Fixed or automatically switched capacitor stages.
- Protection information
- Switching devices, isolation, protection and discharge circuits.
- Mounting
- Enclosure layout, ventilation and maintenance access.
Application • Control requirement • Enclosure requirement
Automatic Capacitor Banks
Capacitor panels provide reactive power compensation based on measured demand, power factor and the installation's harmonic conditions.
ApplicationAutomatic Capacitor Banks
Control requirementFixed or automatically switched capacitor stages.
Enclosure requirementEnclosure layout, ventilation and maintenance access.
Project informationLoad list / Power-factor data
Choose the arrangement below and add the details you have.
01 Technical data
Configuration & project information
Choose the arrangement below and add the details you have.
Information to provide
- Load profile
- Active demand, present and target power factor, and load profile.
- Harmonic information
- Harmonic measurements and existing compensation equipment.
- Automatic steps / kvar
- System voltage, frequency, requested kvar and stage arrangement.
02 Application engineering
Applications
Industrial reactive power compensation
Motors and other inductive loads draw reactive power as well as active power. A capacitor bank supplies part of that demand near the distribution point. Measured load profiles, existing power factor and the target operating range determine compensation capacity; light-load conditions must be considered to avoid overcompensation.
Variable building and utility loads
Offices, retail facilities and central utilities have reactive demand that changes as equipment starts and stops. An automatic bank switches capacitor steps to follow that demand. Step sizes, controller sensing location and switching duty should match the load pattern, rather than being chosen from transformer capacity alone.
Networks with drives and UPS
Variable-speed drives, UPS and rectifiers introduce harmonics that must be assessed before adding capacitors. Network impedance and measured distortion guide the evaluation of resonance risk, detuned reactors and switching equipment. A capacitor bank is not an active harmonic filter; harmonic mitigation and reactive compensation require a coordinated design.
03 Select your configuration
Select your configuration
All fields are optional. Choose one or more options as indicated; use Other for a custom requirement.
Load profile
Select one option.
Control requirement
Select one option.
Harmonic information
Select all that apply.
Project information
Select all that apply.
Additional requirements
Supply voltage requested
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Automatic steps / kvar
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Enclosure requirement
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Component preference
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Supply frequency
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Current requirement (A)
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Electrical values entered here are requested requirements. Equipment ratings must match the selected model and its technical datasheet.
Harmonics affect capacitor loading and resonance risk. Measurements support the selection of detuned arrangements or a different compensation technology; a capacitor bank is not an APF or SVG.
04 Construction and options
Technical options
05 Applicable standards and requirements
Standards
- Project specification
- Technical references: IEC 61921 / IEC 61439-1 / IEC 61439-2. Confirm the applicable part and edition against the intended use and the proposed assembly documents.
- Rating schedule
- Confirm model ratings and installation limits from manufacturer documents.
- Verification documents
- Request verification and inspection records for the exact configuration.
- Supply scope
- Specify equipment, components, engineering, software and documents separately; the quotation confirms included items.
06 Manufacturing & Projects
Manufacturing & Projects
Project Documents
Project Documents
Documents you can send
Send existing drawings or lists. You can start an inquiry without a complete document package.
- Power-factor data
- Non-linear load list
- Load list
- Requested kvar and step schedule
Documents to request
Ask for the following documents for the selected equipment. Document availability and delivery stage are agreed with the quotation.
- Supply scope and component schedule
- General arrangement and wiring diagrams
- Model datasheets and verification records
07 Decision support
Frequently asked questions
What information is needed for a quotation?
Send the following project information: Active demand, present and target power factor, and load profile. Harmonic measurements and existing compensation equipment.
When should an automatic capacitor bank be considered?
An automatic bank adjusts connected stages as reactive demand changes. The stage arrangement should follow measured operating conditions.
Why are harmonic measurements important?
Harmonics affect capacitor loading and resonance risk. Measurements support the selection of detuned arrangements or a different compensation technology; a capacitor bank is not an APF or SVG.
Let’s discuss your project
Request a quote
Send the following project information: Active demand, present and target power factor, and load profile. Harmonic measurements and existing compensation equipment. System voltage, frequency, requested kvar and stage arrangement.
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