Chroma

61604

Q: Can multiple 61604 units be combined for three-phase output?

Yes, up to three 61600 series units can be combined to produce a three-phase power output.

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The Chroma 61604 is a programmable AC power source in the 61600 series. The Chroma 61604 delivers 2000 VA of AC power and has a voltage range of 0-300V and a frequency range of 15-1000Hz.^[1]^[2]

Chroma61604

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Power

150V/300V/Auto^[1]

Performance

0.2%+0.2%F.S.^[1]

Optics

0.1W^[1]

How it works

The Chroma 61600 series employs advanced pulse-width modulation (PWM) technology and a power factor correction circuit to achieve high efficiency and clean output waveforms. A digital signal processor (DSP) is used to program voltage waveforms and to perform precision measurements. The series includes a 16-bit measurement circuit for parameters such as RMS voltage, RMS current, true power, power factor, peak current, inrush current, current crest factor, apparent power, and reactive power.^[1]^[3]

The instrument provides an external analog input that can amplify signals from an arbitrary signal generator, enabling it to simulate complex or field-recorded waveforms. Output voltage amplitude can also be controlled by an external DC level. Remote control is available via GPIB, RS-232, or analog programming interfaces. The unit includes a liquid crystal display (LCD) and a rotary knob for front-panel operation.^[1]^[3]

The Chroma 61604 incorporates full protection against over-power, over-current, over-voltage, and over-temperature conditions. A power-on self-diagnosis routine verifies the instrument's integrity at startup.^[1]

Applications

The Chroma 61600 series is intended for commercial, avionics, and military applications requiring clean AC power. Typical uses include testing power supplies, power electronics, and equipment that must operate from various AC line voltages and frequencies.^[1]^[4]

The 61604 is specifically suited for inrush current testing due to its ability to deliver up to six times peak current relative to the maximum rated current. The programmable turn-on and turn-off phase angle control enables precise inrush testing. The AC+DC output mode facilitates testing of DC offset effects or DC bias conditions.^[1]^[3]

What do the numbers mean?

Power & electrical42

Voltage Range/Phase: 150V/300V/Auto^[1]
Resolution: 0.1V^[1]
Distortion: 0.3% @ 50/60Hz; 1% @ 15~1kHz^[1]
Max. Current/Phase r.m.s.: 16A/8A (150V/300V)^[1]
Max. Current/Phase peak: 96A/48A (150V/300V)^[1]
Frequency Range: DC, 15~1kHz^[1]
Frequency Resolution: 0.01 Hz^[1]
DC Voltage: 212V/424V^[1]
DC Current: 8A/4A (212V/424V)^[1]
Input Voltage Range: 1Ø 100~240V±10%VLN^[1]
Input Current: 28A Max. @ 90V^[1]
Measurement Voltage Range: 150V/300V^[1]
Measurement Voltage Accuracy: 0.2%+0.2%F.S.^[1]
Measurement Voltage Resolution: 0.1V^[1]
Voltage Range (AC): 0 – 300 VAC^[1]
Voltage Range (DC): 212 V / 424 V^[1]
Frequency Range: DC, 15 Hz – 1 kHz^[1]
Max RMS Current (150V range): 16 A^[1]
Max RMS Current (300V range): 8 A^[1]
Max Peak Current (150V range): 96 A^[1]
Max Peak Current (300V range): 48 A^[1]
Voltage Accuracy: 0.2% + 0.2% F.S.^[1]
Total Harmonic Distortion: < 0.3% at 50/60 Hz; 1% typical 15-1 kHz^[1]
Input Frequency: 47 – 63 Hz^[1]
Input Current (max): 28 A at 90 V^[1]
Output Voltage Range: 0 to 150 V / 0 to 300 V / Auto^[1]
Output Frequency Range: 15 Hz to 1000 Hz (DC included)^[1]
Max Output Current (RMS): 16 A at 150 V / 8 A at 300 V^[1]
Max Output Current (Peak): 96 A at 150 V / 48 A at 300 V^[1]
Output Distortion: 0.3% at 50/60 Hz; 1% at 15–1000 Hz (typical)^[1]
DC Output Voltage: 212 V / 424 V^[1]
Input Voltage Range: 100–240 V ±10% (single phase)^[1]
Max Input Current: 28 A at 90 V^[1]
Voltage Accuracy: 0.2% + 0.2% of full scale^[1]
Protections: OPP (over‑power), OCP (over‑current), OVP (over‑voltage), OTP (over‑temperature)^[1]
Voltage Range: 0-150 V / 0-300 V / Auto^[1]
Voltage Resolution: 0.1 V^[1]
Distortion: 0.3% @ 50/60 Hz; 1% @ 15-1 kHz (typical)^[1]
Max. Output RMS Current (150 V / 300 V): 16 A / 8 A^[1]
Max. Output Peak Current (150 V / 300 V): 96 A / 48 A^[1]
DC Output Current (212 V / 424 V): 8 A / 4 A^[1]
Input Voltage Range: 1-phase 100-240 V ±10% VLN^[1]

Optics & imaging1

Power Resolution: 0.1W^[1]

Performance8

Accuracy: 0.2%+0.2%F.S.^[1]
Frequency Accuracy: 0.15%^[1]
Measurement Current Accuracy (r.m.s.): 0.4%+0.3%F.S.^[1]
Measurement Current Accuracy (peak): 0.4%+0.6%F.S.^[1]
Power Accuracy: 0.4%+0.4%F.S.^[1]
Measurement RMS Current Accuracy: 0.4% + 0.3% F.S.^[1]
Measurement Peak Current Accuracy: 0.4% + 0.6% F.S.^[1]
Measurement Power Accuracy: 0.4% + 0.4% F.S.^[1]

Control & software1

Remote Interfaces: GPIB, RS-232, Analog Programming (APG); optional LAN/USB^[1]

Dimensions & facilities9

Dimensions (H x W x D): 133.35 x 482.6 x 569.5 mm^[1]
Weight: 21 kg^[1]2 sources
Dimensions (H x W x D): 133.35 x 482.6 x 569.5 mm (5.25 x 19 x 22.42 in)^[1]
Weight: 21 kg (44.05 lbs)^[3]
Dimensions (W × H × D): 483 × 134 × 610 mm^[2]
Dimensions (H x W x D) – Datasheet: 133.35 x 482.6 x 569.5 mm^[1]
Weight – Datasheet: 20 kg^[1]
Dimensions (W x H x D) – User Manual: 483 x 134 x 610 mm^[2]
Weight – User Manual: 21 kg^[2]

Configuration & options24

Output Rating - AC Power/Phase: 2000VA^[1]
Line Regulation: 0.1%^[1]
Load Regulation: 0.2%^[1]
DC Output Power: 1000W^[1]
Input Frequency Range: 47~63Hz^[1]
Input Power Factor: 0.98 Min.^[1]
Measurement Current Range (peak): 96A^[1]
Operating Temperature: 0~40°C^[1]
Storage Temperature: -40~+85°C^[1]
Safety & EMC: CE (include EMC & LVD)^[1]
AC Power Rating: 2000 VA^[1]
DC Power Rating: 1000 W^[1]
Output Phases: 1^[1]
Input Power Factor: 0.98 min at full load^[1]
Safety & EMC: CE (EMC & LVD)^[1]
Output Power: 2000 VA (2 kVA)^[1]
Number of Phases: 1^[1]
DC Output Current: 8 A / 4 A^[1]
Input Power Factor: 0.98 minimum (full load)^[1]
Operating Temperature Range: 0 to 40 °C^[1]
Storage Temperature Range: -40 to +85 °C^[1]
Max Crest Factor: 6:1^[1]
AC Output Power: 2000 VA^[1]
Storage Temperature: -40 to +85 °C^[1]

Vintage & configurations

Documented models & variants

Designation	Generation	Vintage	Changes	Source
61601	—	—	500VA output power	chromausa.com^[1]
61602	—	—	1000VA output power	chromausa.com^[1]
61603	—	—	1500VA output power	chromausa.com^[1]
61605	—	—	4000VA output power, 3-phase input, larger dimensions	chromausa.com^[1]
61604	—	—	2000 VA	chromausa.com^[1]

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Voltage Range/Phase150V/300V/Auto^[1]
Resolution0.1V^[1]
Distortion0.3% @ 50/60Hz; 1% @ 15~1kHz^[1]
Max. Current/Phase r.m.s.16A/8A (150V/300V)^[1]
Max. Current/Phase peak96A/48A (150V/300V)^[1]
Frequency RangeDC, 15~1kHz^[1]
Frequency Resolution0.01 Hz^[1]
DC Voltage212V/424V^[1]
DC Current8A/4A (212V/424V)^[1]
Input Voltage Range1Ø 100~240V±10%VLN^[1]
Input Current28A Max. @ 90V^[1]
Measurement Voltage Range150V/300V^[1]
Measurement Voltage Accuracy0.2%+0.2%F.S.^[1]
Measurement Voltage Resolution0.1V^[1]
Voltage Range (AC)0 – 300 VAC^[1]
Voltage Range (DC)212 V / 424 V^[1]
Frequency RangeDC, 15 Hz – 1 kHz^[1]
Max RMS Current (150V range)16 A^[1]
Max RMS Current (300V range)8 A^[1]
Max Peak Current (150V range)96 A^[1]
Max Peak Current (300V range)48 A^[1]
Voltage Accuracy0.2% + 0.2% F.S.^[1]
Total Harmonic Distortion< 0.3% at 50/60 Hz; 1% typical 15-1 kHz^[1]
Input Frequency47 – 63 Hz^[1]
Input Current (max)28 A at 90 V^[1]
Output Voltage Range0 to 150 V / 0 to 300 V / Auto^[1]
Output Frequency Range15 Hz to 1000 Hz (DC included)^[1]
Max Output Current (RMS)16 A at 150 V / 8 A at 300 V^[1]
Max Output Current (Peak)96 A at 150 V / 48 A at 300 V^[1]
Output Distortion0.3% at 50/60 Hz; 1% at 15–1000 Hz (typical)^[1]
DC Output Voltage212 V / 424 V^[1]
Input Voltage Range100–240 V ±10% (single phase)^[1]
Max Input Current28 A at 90 V^[1]
Voltage Accuracy0.2% + 0.2% of full scale^[1]
ProtectionsOPP (over‑power), OCP (over‑current), OVP (over‑voltage), OTP (over‑temperature)^[1]
Voltage Range0-150 V / 0-300 V / Auto^[1]
Voltage Resolution0.1 V^[1]
Distortion0.3% @ 50/60 Hz; 1% @ 15-1 kHz (typical)^[1]
Max. Output RMS Current (150 V / 300 V)16 A / 8 A^[1]
Max. Output Peak Current (150 V / 300 V)96 A / 48 A^[1]
DC Output Current (212 V / 424 V)8 A / 4 A^[1]
Input Voltage Range1-phase 100-240 V ±10% VLN^[1]

Where are the manuals?

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Not publicly documented

Field notes

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Frequently asked questions

Can multiple 61604 units be combined for three-phase output?

Yes, up to three 61600 series units can be combined to produce a three-phase power output.^[1]^[4]

Not publicly documented

The following facts about the 61604 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the 61604 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the 61604 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the 61604 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 61604 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the 61604 are on record.
Answerable by: an OEM parts catalog or a service engineer

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Sources & citations

Sources (5)Every fact above is drawn from these public sources

[1]chromausa.com — chromausa.comchromausa.com
[2]assets.testequity.com — assets.testequity.comassets.testequity.com
[3]testequipment.center — testequipment.centertestequipment.center
[4]TestEquity: Chroma 61604 AC Power Source, 2kVA, 15-1kHz, 1 Phase, 150V/300V/Auto, 61600 Series — testequity.comtestequity.com
[5]Equipment inventory listing