61611-220 Chroma AC Source New

Summary and Quick Reference

In summary, the Chroma 61511 is a 12kVA programmable AC power source delivering 0~150V / 0~300V output, DC and 15Hz~1500Hz frequency range, and user-selectable single-phase or three-phase output from a single chassis. It is built on advanced PWM technology with a modularized power stage and no output-stage transformer — enabling the AC+DC mode that lets a user program a DC offset on the AC waveform. As a 61500-series unit, the 61511 carries the full advanced feature set: LIST/PULSE/STEP power-line-disturbance simulation, 40-order harmonic and interharmonic waveform synthesis, programmable output impedance (0Ω+200µH ~ 1Ω+1mH), and 40-order voltage/current harmonic measurement — the toolset required for IEC 61000-4-11, IEC 61000-4-13, IEC 61000-4-14, and IEC 61000-4-28 compliance work.

What is the Chroma 61511 used for?

The Chroma 61511 is used to simulate AC line conditions for products under test — anywhere a fixed wall outlet cannot deliver the controlled, programmable, abnormal, or international mains conditions a test plan requires. In a 61500-series configuration, it is most often deployed in compliance laboratories, power electronics R&D, avionics test cells, and EV charger / inverter test benches where IEC voltage-dip, harmonic, and flicker regulations are mandatory. The 4× peak-current capability makes it equally well suited to inrush current testing, where the instantaneous demand at UUT power-on dwarfs the steady-state rating. Single-phase or three-phase output is user-selectable from front panel or remote control with no power derating required when the output is configured single-phase.

How does the Chroma 61511 compare to a conventional AC source?

A traditional AC source delivers a sine-wave output and little else. The Chroma 61511 uses state-of-the-art PWM technology with a modularized power stage and no output-stage transformer, which both reduces output impedance and enables the AC+DC mode used for DC-offset and rectified-load testing. The 61500 series adds the advanced compliance-test functions that separate a steady-state programmable AC source from a true power-line-disturbance instrument: LIST/PULSE/STEP modes for PLD simulation, a 40-order harmonics and interharmonics waveform synthesizer, programmable output impedance, and 40-order voltage and current harmonic measurement. By applying advanced DSP technology, the 61511 can easily simulate power line disturbance (PLD) through LIST, PULSE and STEP modes. Built-in 16-bit measurement circuitry returns true RMS voltage, RMS current, true power, VA (apparent power), VAR (reactive power), power factor, current crest factor, peak repetitive current, and inrush current — making the unit a sophisticated electrical analyzer in addition to a programmable source.

Factual Grounding — Specifications and Industry Context

The Chroma 61511 delivers 12kVA total output (4kVA per phase in three-phase configuration), 0~150V / 0~300V voltage range with 0.1V resolution and 0.1%+0.2%F.S. accuracy, and a DC to 1.5kHz frequency range with 0.01Hz resolution and 0.01% accuracy. Maximum RMS current in single-phase mode is 96A / 48A (150V / 300V range), with peak current at crest factor 4 of 384A / 192A. Typical distortion is 0.3% at 50/60Hz, 1% at 15Hz–1kHz, and 1.5% above 1kHz. Line regulation is 0.1%; load regulation is 0.2%; temperature coefficient is 0.02% per degree from 25℃; efficiency is 0.75 typical at 230V input. Protection includes UVP, OCP, OPP, OTP, and FAN. The unit complies with CE (including EMC and LVD).

Entity Authority — Chroma ATE and the IEC 61000 Compliance Family

Chroma ATE Inc. is one of the global reference brands in programmable AC power, and the 61500/61600 series is the high-power member of Chroma's AC source ecosystem. The 61511 is engineered into compliance workflows for the IEC 61000 immunity family — IEC 61000-4-11 (voltage dips, short interruptions, and voltage variations), IEC 61000-4-13 (harmonics and interharmonics immunity, 61500 series), IEC 61000-4-14 (voltage fluctuation), IEC 61000-4-28 (frequency variation), and IEC 61000-3-3 (flicker reference impedance, 61500 series) — and into the avionics, EV charger, UPS, solar inverter, and military regulation test conversations where a programmable mains substitute is non-discretionary. Compliance with the IEC 61010 family of safety standards and the CE EMC / LVD framework is built in.

How does the 61511 compare to industry baseline AC sources?

• Power density: 12kVA from a single chassis with no output-stage transformer — the modularized high-speed PWM power stage delivers high output density compared to transformer-coupled designs and simplifies field service.
• Inrush capability: Up to 4× the maximum rated RMS current (peak current 384A / 192A in single-phase mode), enabling realistic inrush testing without a separate stiff-source instrument.
• AC+DC capability: Programmable DC offset on the AC waveform — the absence of an output transformer makes simulation of AC voltage with a DC offset condition possible, including unbalanced-input-current simulation for rectified loads.
• Phase flexibility: Single-phase or three-phase output is selectable in software with no derating in single-phase mode — most AC sources at this power class do not preserve full power output across both configurations.
• Slew-rate programming: Voltage and frequency slew rates are user-programmable, enabling slow voltage sweeps (e.g. 90V to 264V) and reduced inrush current during motor startup or multi-UUT power-on — instead of stepping through discrete voltage points.
• Parallel scaling: Up to 90KVA via Master-Slave parallel operation with up to 5 units, with the A615103 power stage available as a cost-effective slave alternative.

Available Options and Accessories

The 61511/61512/61611/61612 platform supports a family of order-line options that extend capability, simplify multi-unit installation, and protect against test-cell hazards. The accessories below are listed as options on this product — they are not separately configured as orderable units on this page.

• A615007: Softpanel for 61500/61600 Series. Graphical user interface for remote control and operation, with online and offline waveform editing, simultaneous data recording across multiple measurements, and pre-configured test environments for IEC 61000-4-11, IEC 61000-4-13, IEC 61000-4-14, and IEC 61000-4-28 regulation tests. Softpanel support functions depend on the AC Source model being implemented — for instance, Softpanel will not provide support for LIST mode function if a 61600 series AC Source is implemented.
• A615103: Parallable power stage unit, 18KVA, 1ø/3ø. Cost-effective slave unit alternative for Master-Slave parallel operation, enabling combined power outputs such as 54KVA when paired with a 61512 master and two A615103 units.
• A615104: Input/Output terminal fixture for parallel connecting two AC source units, designed to reduce the hassle of arranging input and output wiring of multiple AC sources connected for parallel operation.
• A615105: Input/Output terminal fixture for parallel connecting three AC source units.
• A615106: Reverse Current Protection Unit for 61511/61512/61611/61612.
• A92-000502: GPIB-Ethernet Controller, providing the optional Ethernet interface.
• 277V_LN/480V_LL (5 Wires) AC input voltage option: Available for 61511/61512/61611/61612/A615103 models. Please contact your local sales representative for ordering information.

Chroma 61511 Programmable AC Power Source — 12kVA, 0~300V, 15~1.5KHz, 1ø/3ø

The global market for AC power testing has created demand for a more sophisticated, high performance AC power source that is capable of simulating a wide range of AC line conditions. The Chroma 61500/61600 series programmable AC sources are the solution to meet this demand. These sources provide the ability to simulate various AC line input conditions as well as the measurement of critical characteristics for products under test. These features make the 61500/61600 series ideal for commercial, power electronics, avionics, military, and regulation test applications from bench-top R/D design verification to quality assurance and mass production.

Using state of the art PWM technology, the 61511/61512/61611/61612 models can deliver a maximum output voltage of up to 300Vac and an output frequency from 15Hz to 1500Hz. The AC+DC modes extend the abilities by not only providing pure AC voltage, but also a DC component for DC offset testing in the laboratory.

The 61511/61512/61611/61612 AC sources are capable of delivering up to 4 times the peak current compared to the maximum rated current which makes it ideal for inrush current tests. All models possess the ability to generate a pure sine waveform output with typical distortion of less than 0.3% at 50/60Hz. The Chroma 61500/61600 series are able to provide precision measurements such as RMS voltage, RMS current, true power, power factor, current crest factor and more. By applying advanced DSP technology, the 61511/61512 models can easily simulate power line disturbance (PLD) through LIST, PULSE and STEP modes.

The Chroma 61500/61600 series allow users to compose different harmonic components to synthesize various harmonic distorted waveforms. By applying this advanced feature, users can program a sweeping frequency component incorporated with the fundamental voltage for finding resonance points of the UUT, thus providing the user with in depth analysis results. To simulate the natural waveform, the 61500/61600 series include an external analog input used to amplify the analog signal generated from an arbitrary signal generator. Users can implement this feature to duplicate any unique waveform observed in the field. The user friendly interface allows user quick access to the 61511/61512/61611/61612 AC source's functions through a large LCD display on the front panel, with a clearly indicated keypad. Standard GPIB (IEEE488.2), RS-232, USB, and optional Ethernet interfaces are available for remote control of the AC source.

Full Key Features List

• Power rating: 61511/61611: 12KVA; 61512/61612: 18KVA
• Voltage range: 0~150V/0~300V/auto
• Frequency: DC, 15Hz~1500Hz
• Single phase or three phase output selectable
• Programmable slew rate setting for changing voltage and frequency
• Programmable voltage and current limit
• High output current crest factor, ideal for inrush current testing
• Turn on, turn off phase angle control
• TTL signal which indicates output transient
• LIST, PULSE, STEP mode functions for testing power line disturbance (PLD) simulation
• Voltage dips, short interruption and voltage variation simulation
• Harmonics, inter harmonics waveform synthesizer (40 orders @ 50/60Hz)
• Programmable output impedance: 0Ω+200µH ~ 1Ω+1mH
• Comprehensive measurement capability, including current harmonics
• Analog programmable interfaces
• Standard GPIB, RS-232, USB interfaces
• Optional Ethernet interface
• Capable of delivering power output up to 90KVA by implementing master slave parallel operation

Advanced PWM Technology

The Chroma 61500/61600 series AC power sources are able to provide the highest power density through an advanced high speed PWM mode design. The modularized power stage design offers outstanding performance and high reliability. This design also allows service personnel to identify trouble spots more efficiently and minimize downtime. With no transformer at the output stage, it not only reduces output impedance, but also allows the 61500/61600 series to be able to program a DC component for simulating AC voltage with a DC offset condition. This function allows users to simulate test conditions for unbalanced input currents for rectified loads.

Single-Phase and Three-Phase Output

Model 61511/61512/61611/61612 AC sources are capable of delivering either single or three-phase output depending on the application. Users can select these output modes easily through front panel or via remote control. Model 61511/61512/61611/61612 AC sources are able to provide full power output without derating even with the output configured as single phase.

Slew Rate Setting for Voltage and Frequency

Model 61511/61512/61611/61612 AC sources let users set the slew rate for voltage and frequency. It will follow the slew rate to reach the final setting when the output voltage or frequency is changed. This function can help users verify the operation range of input power. For example, a user can implement this feature to sweep the voltage gradually from 90V to 264V, instead of only checking several points like 90V, 115V, 230V and 264V. Slew rate can also be used to reduce the inrush current during motor startup or power on of multiple UUT.

Comprehensive Measurements

The Chroma model 61500/61600 AC power sources have a built in 16-bit measurement circuit and firmware utilities for measuring true RMS voltage, current, true power, VA (apparent power), VAR (reactive power), power factor, current crest factor, peak repetitive current, and inrush current. Using the advanced DSP technology, 61500 series can measure THD and up to 40 orders of current harmonics. This makes the 61500 series not only a sophisticated power source, but also a powerful electrical analyzer.

Power Line Disturbance Simulation (61500 Series)

In addition to steady output voltage and frequency programming, Chroma AC power source 61500 series provides powerful functions to simulate a variety of power line disturbance conditions. The STEP and PULSE modes offer an easy and convenient method to execute either single step or continuous output changes. These changes may be triggered by either internal or external events. With this capability, it is easy to simulate power line disturbances like cycle dropouts, transient spikes, brown outs, and more.

The LIST Mode extends these functions for more complex waveform generation needs. With up to 100 sequences of different start-end conditions, the source can perform almost any waveform possible for AC and DC components. In this way, the Chroma AC power source 61500 series is capable of simulating all sorts of voltage dips, interruptions, and variation waveforms for IEC 61000-4-11, IEC 61000-4-14, and IEC 61000-4-28 compliance tests. It also allows users to synchronize external events and measurement devices with output changes.

Distortion Waveform, Harmonics, Interharmonics Synthesis (61500 Series)

Traditional types of AC sources only provide an output voltage with a sine waveform, and this type of AC source is unable to meet and keep up with the latest test requirements for simulating input voltage abnormal conditions with distortion waveforms. The WAVEFORM function allow user to set square, clipped-sine wave and 30 stored distortion waveforms.

The 61500 series allows users to composite up to 40 orders of harmonic components based on a 50Hz or 60Hz fundamental. The output will be a periodic harmonics distorted waveform. It also provides a sweeping interhamonics function. This means that the fundamental frequency will incorporate with a frequency sweeping component between harmonic frequencies. It can help to find the resonance or the weakest points of a UUT. The Chroma AC source 61500 series uses advanced DSP technology to synthesize the harmonic and interharmonics waveforms. Therefore it is capable of generating a periodic harmonic and non-periodic harmonic distorted waveform to perform IEC 61000-4-13 compliance tests.

Programmable Output Impedance (61500 Series)

The Chroma AC source 61500 series allows users to program output impedance. A current feedback control circuit causes the output voltage to change with the load. This feature is suitable for IEC 61000-3-3 Flicker tests, or other test conditions with a particular output impedance requirement. It provides users a convenient and cost effective way to implement the reference impedance.

Master-Slave Parallel Operation — Power Scaling to 90KVA

The 61511/61512/61611/61612 AC source models provide Master-Slave parallel operation, which allows users to extend the AC source power output capability by connecting multiple AC sources in parallel. The maximum allowable number of AC sources that can be implemented in parallel operation is 5 units. Users can achieve a maximum power output up to 90KVA by combining 5 units of assorted AC source of 18KVA in Master-Slave parallel operation. The user could also use the A615103 Power Stage as an alternative cost effective solution for parallel operation, by implementing it as slave unit.

• Combine two units of Model 61512 for obtaining 36KVA power output, or combine AC source models 61512 + 61511 for obtaining 30KVA power output.
• Combine AC source Model 61512 with two units of A615103 (18KVA) for obtaining 54KVA power output.
• Maximum power output up to 90KVA by combining 5 units of assorted AC source of 18KVA in Master-Slave parallel operation.

To reduce the hassle of arranging the input and output wiring of multiple AC sources connected for parallel operation, users can implement the Chroma input/output terminal fixture (A615104/A615105) designed specifically to make the wiring simple.

The 61500/61600 Series Softpanel

The Chroma Softpanel is a graphical user interface which provides extraordinary capability and convenience to users for remote control and operation of the unit. The 61500/61600 series Softpanel is designed specifically for offering users control of the AC source by applying a user friendly interface in a graphical, instrument like setting. The self-explanatory graphical interface makes configuration of the extensive functions of the AC source easy with just few clicks of the mouse. Users are able to perform online and offline waveform editing with the implementation of the Softpanel. The Softpanel is also designed with data recording functions so that multiple measurements can be recorded simultaneously. One of the most powerful features of the Softpanel is the availability of a test environment configured specifically for conducting IEC regulation tests like IEC 61000-4-11, IEC 61000-4-13, IEC 61000-4-14, and IEC 61000-4-28. Softpanel support functions are actually depending on the AC Source model being implemented. For instance, Softpanel will not provide support for LIST mode function if 61600 series AC Source is implemented.

Complete Specifications — Chroma 61511

Note 1: Maximum distortion is tested on output 125VAC (150V RANGE) and 250VAC (300V RANGE) with maximum current to linear load. Note 2: Load regulation is tested with sine wave and remote sense. Note 3: Models with 277V_LN/480V_LL (5 Wires) AC input voltage are available upon request. Note 4: Efficiency is tested on input voltage 230V. Note 5: Dimension (H x W x D) with wheelsets: 1246 x 546 x 700 mm / 49.05 x 21.5 x 27.56 inch. Note 6: Maximum current on input neutral line. All specifications are subject to change without notice.

Power Quality and Regulation Specifications

Output quality is the headline question on any AC source datasheet — and the 61511/61512/61611/61612 publishes the numbers that compliance engineers expect to see. Maximum distortion is tested on output 125VAC (150V RANGE) and 250VAC (300V RANGE) with maximum current to linear load. Load regulation is tested with sine wave and remote sense. Efficiency is tested on input voltage 230V. All specifications are subject to change without notice.

Physical, Environmental, and Interface Specifications

Front Panel and Rear Panel — Operator Interface

The 6.5-inch graphic LCD display anchors the front panel and supports both settings entry and measurement readback. A rotary knob handles fine adjustment of voltage, frequency, and parameter values, with a dedicated function key block providing hot-key access to frequently used parameters. Numeric keys handle direct data entry, while soft keys adjacent to the LCD display deliver a menu-driven interface that maps to the command block shown on screen. The cursor keys handle navigation, and the power switch sits at the lower-left of the front panel alongside a remote control port.

The rear panel concentrates all programmability and parallel-operation connections in one location. The Master/Slave port supports Master-Slave parallel operation for power extension; an external V reference input accepts an analog signal for voltage control; the TTL I/O carries signals used for system integration; and a second remote control port and a system bus complete the integration interfaces. The standard communication block carries a USB Interface, an RS-232 Interface, and a GPIB Interface, with an optional Ethernet Interface available as a fourth digital control path. The input power section uses a selection switch for Δ or Y 3-phase connection. A remote sense input compensates for the line drop between AC source and the testing point, and the heavy-current input and output terminals are the final electrical connections.

Parallel-Operation Power Output Combinations

The spec sheet publishes the standard parallel combinations and the power available at the output of each combination, including A615103 cost-effective power-stage extensions:

Ordering Information

• 61511: Programmable AC Source 0~300V, 15~1.5KHz/12KVA, 1ø/3ø
• 61512: Programmable AC Source 0~300V, 15~1.5KHz/18KVA, 1ø/3ø
• 61611: Programmable AC Source 0~300V, 15~1.5KHz/12KVA, 1ø/3ø
• 61612: Programmable AC Source 0~300V, 15~1.5KHz/18KVA, 1ø/3ø
• A615007: Softpanel for 61500/61600 Series
• A615103: Parallable power stage unit 18KVA, 1ø/3ø
• A615104: Input/Output terminals for parallel connecting (2 units)
• A615105: Input/Output terminals for parallel connecting (3 units)
• A615106: Reverse Current Protection Unit for 61511/61512/61611/61612
• A92-000502: GPIB-Ethernet Controller (Ethernet interface)