ZFDP Single-Phase Variable-Frequency AC Sources

Explore our 11 ZFDP models

Our ZFDP range starts at 500 VA, equivalent to 0.5 kVA, and extends to 45 kVA. Compare the capacity and dimensions to make an initial shortlist for your equipment or test station.

Select a model and describe its duty

Each model inquiry keeps the model identifier and capacity together. The next step is to connect that choice to the actual output voltage, frequency and current requirement. A continuously powered appliance, a timed production check and a startup test can need different operating conditions even when their apparent-power requirements are similar.

No matching model. Clear the search or describe your required capacity in an inquiry.

Configure the site input and single-phase output separately

We discuss the available input supply independently of the required single-phase output. Input voltage, phase arrangement and frequency describe the source-side connection; output settings describe what the equipment under test receives.

Connect the two electrical interfaces

The installation sequence is site supply, AC source, then connected equipment. Each interface has its own voltage, current and connection requirements. Supply variation, upstream capacity and the earthing arrangement help define the input configuration.

We coordinate the selected unit's terminal information and connection drawing with those requirements. Qualified electrical personnel determine the installation connections and upstream protection from the agreed arrangement.

Define the output points your equipment needs

We use a schedule of operating points to turn the application into a model configuration. Include nominal operation and any required extremes, with the duration and repetition of each condition.

This schedule also gives the project team a shared reference when discussing test conditions.

Consider RMS current and brief peaks together

For a single-phase load, apparent power depends on RMS voltage and RMS current. Real power also depends on power factor. We consider these quantities together because a kVA selection alone does not describe current demand at every output setting.

Repetitive peaks and startup current

Electronic loads can draw repetitive peaks within each cycle, while equipment startup can create a separate short-duration demand. Current crest factor is the ratio of peak current to RMS current; it helps describe the waveform's peakiness.

Peak magnitude, duration and repetition therefore belong with the continuous-load information when we discuss the selected ZFDP model.

Relate output quality to the measurement conditions

We discuss voltage and frequency accuracy, waveform requirements and recovery behavior at the output points that matter to your application. Linear and nonlinear loads can present different conditions to the source.

Measurement location also matters. A reading at the source terminals and a reading at the connected equipment can differ because of the connecting leads. The test arrangement should identify the intended location, cable arrangement and load state.

Make results comparable

Warm-up conditions, ambient temperature, measuring method and the timing of a load change help define a repeatable check. We align these details with the project's required results.

Discuss control and protective responses for the process

Local adjustment, remote commands and test-sequence requirements can change how an AC source fits into a workstation. We use the required process to discuss the control functions and interfaces for the selected configuration.

Protective behavior also needs a defined outcome: after an overload, interrupted supply or other trip, the process may require the output to remain disabled until an operator acts. The chosen recovery arrangement belongs with the operating instructions.

Any required galvanic isolation or load capable of returning power should be identified early. Those requirements affect the suitable electrical arrangement and the equipment interfaces.

Configure for equipment supply or repeatable testing

A supply application may operate at one voltage and frequency for an extended period. A production station may repeat a small set of points, while development work may use several conditions and transitions.

Match the workflow to the project

We discuss the settings, operator actions and measurement needs behind those tasks. For export equipment, the destination operating conditions provide the relevant output targets. For testing, the required sequence and records help define the control and measurement scope.

See our AC frequency converter range for the wider application discussion, or our ZFSP models for three-phase output requirements.

Fit connections and cooling into the test area

Model dimensions help with initial layout planning. We coordinate the dimension directions, mounting arrangement, connection positions and service clearances through the selected unit's drawing.

Electronic power conversion produces losses that must be removed as heat. Output power is not the heat-loss value, so ventilation planning uses the selected configuration's thermal information and site conditions.

Enclosure finish, conductor interfaces and insulation requirements also relate to the environment and connections. Cable routes need room around cooling openings and operator controls. For delivery planning, equipment mass, packed mass and package dimensions are discussed alongside any mounting or accessory requirements.

Align configuration documents and project checks

We bring the agreed operating points, electrical connections, external arrangement and nameplate information into the project documents. Required checks can then refer to the same voltage, frequency, load and timing conditions used during selection.

Where a project needs particular measurement or calibration records, the scope and required documentation are defined with the test arrangement. Included cables, accessories and packing information are also identified with the order.

Support clear identification through use

Receiving checks connect the model and equipment identification to the supplied parts. Operating instructions, cleaning access and fault information help the qualified site team maintain the intended installation.

Discuss your ZFDP output points and load

Start with the model or required capacity, available input supply and the voltage and frequency your equipment needs. A short description of the load and any startup demand gives us a useful basis for discussion.

Add quantity, destination and installation constraints. Existing test specifications or an operating-point schedule can follow as we develop the electrical, control and mechanical configuration together.