California Instruments CS Series 3kVA - 18kVA Programmable High Power AC Current Source

Product Overview:

  • Precision Current Source : Ideally suited for current protection device testing
  • Single and Three Phase Modes : Built-in phase mode switch makes output configuration easy
  • 3kVA to 18kVA Power Levels : Match power source & cost to application requirements
  • Arbitrary Waveform Generator : Test products using real world current profiles including harmonic currents
  • Built-In Power Analyzer : Performs voltage & current harmonic analysis & waveform acquisition
  • Standard IEEE-448, USB and RS232C : Remote control interface for ATE system integration
  • GUI Software Suite: Allows users to access the powerful features & functions of the instrument on a Windows™ system
  • Programmable Transients : Amplitude & time control with up to 1ms resolution


The CS Series represents an advanced AC current source that addresses increasing demands on manufacturers to test products using real-world current profiles. By combining true current transconductance amplifiers with an advanced digital controller and harmonic power analyzer, CS Series current sources are capable of performing tests that would traditionally have been difficult to accomplish.

The CS Series is completely microprocessor controlled and can be operated from a simple front panel keypad. An analog knob located next to the backlit alphanumeric LCD display allows output current or frequency to be slewed up or down dynamically. With precise current programming and regulation, high output current, multi-phase mode and built-in power analyzer measurement capabilities, CS Series AC current sources address many AC current test applications. Additional features, like arbitrary waveform generation and transient generation make the CS Series the ideal source for demanding production test requirements.

All CS Series AC sources are equipped with IEEE-488 (GPIB), USB and RS232C remote control interfaces and support SCPI command language programming. An Ethernet interface is optional (-LAN Option).

Current Control

The CS Series uses true current feedback control. This is considerably different from many commonly available AC power sources that use a voltage feedback scheme in combination with a constant current mode of operation. Such power sources adjust the output voltage to try and maintain the requested current level (Voltage controlled current). These voltage controlled current sources have a finite response time to sudden impedance changes, which typically results in dynamic current over or undershoot as the load impedance changes. A current controlled current source does not suffer from the response lag and will always maintain the current at the specified level, regardless of transient load conditions. The maximum compliance voltage supported by the CS Series is 135 Vrms. A lower compliance voltage trip level can be programmed as needed.

Waveform Generation
The CS Series provides sine, clipped sine and square waveforms in addition to user defined arbitrary waveforms. Harmonic waveforms can be used to test for harmonic current susceptibility of a unit under test. With the help of the supplied Windows Instrument Control Software (ICS), defining harmonic waveforms is as easy as specifying the relative amplitude and phase angle for each of up to 50 harmonics. The user also has the ability to define arbitrary waveform data. Complex AC current anomalies can be simulated this way. The waveform data points generated are downloaded by the ICS to the AC source through IEEE-488, USB or RS232C bus. Up to 50 user-defined waveforms can be stored and given a descriptive name for easy recall. Downloaded waveforms are retained in non-volatile memory for recall over the bus or from the front panel.

Transient Generation
To simulate complex current events, the CS Series offers a list of transient steps. These steps can be programmed from the front panel or downloaded over the interface using the software supplied. The ICS allows libraries of commonly used sequences to be created on disk for quick recall. Once downloaded, the transient program can be executed from the PC or from the front panel. AC current transient generation allows the effect of rapid changes in current, frequency and current waveform shape on the unit under test to be analyzed. The combination of transients and user defined arbitrary waveforms creates a powerful test platform for AC powered products.

The CS Series measurement system is based on real-time digitization of the voltage and current waveforms using a 4K-sample buffer. The digitized waveform data is processed by a Digital Signal Processor to extract conventional load values such as rms voltage, rms current, real and apparent power. The same data is also used to perform Fast Fourier Transformation (FFT) to extract the harmonic amplitude and phase angle of 50 harmonics.

Standard Measurements
The following standard measurements are available from the front panel or via the bus: Frequency, Phase, Voltage (rms), Current (rms), Peak Voltage, Voltage Crest Factor, Real Power, Apparent Power, Power Factor

Advanced Measurement Functions
In addition to standard load parameters, the CS Series is capable of measuring voltage and current amplitude and phase harmonics. Total harmonic distortion of both voltage and current is also available. Advanced measurement results like harmonic content of voltage and current for all three phases are available over the bus. The ICS can be used to save and print harmonics data in tabular, bar graph or time domain formats. The acquired voltage and current time-domain waveforms for each output phase can also be displayed using the software. Waveform displays on the PC include voltage and current combined, three-phase voltage, three-phase current and true power. The time-domain data is also available for transfer to a PC.

Windows Graphical User Interface
The Instrument Control Software (ICS) offers a soft front panel interface for operation from a PC running Windows Vista™, Windows XP™, or Windows 2000™. The following functions are available through this software:

  • Steady state output control (all parameters).
  • Create, run, save and print transient programs.
  • Generate and save harmonic waveforms.
  • Generate and save arbitrary waveforms.
  • Measure and log standard measurements.
  • Capture and display Voltage and Current waveforms.
  • Measure, display, print and log harmonic voltage and
  • current measurements.

Maximum Available Current 3000CS: Single Phase = 44.44 A, Three Phase = 14.81 A. 4500CS: Single Phase = 44.44 A, Three Phase = 14.81 A
Multi-Chassis Maximum Available
9000CS/2: Single Phase = 88.88 A, Three Phase = 29.62 A. 13500CS/3: Single Phase = 133.33 A, Three Phase = 44.44 A.
18000CS/4: Single Phase = 177.7 A, Three Phase = 59.24 A
Programming Resolution 0.01 A
Programming Accuracy Three Phase Mode: ± (0.1% + 0.05 A) from .5A to full scale. Single Phase Mode: ± (0.1% + 0.15 A) from .5A to full scale
Distortion THD (full scale current, resistive load conditions) < 1.2% [60-500 Hz], 
< 2% [500-1000 Hz], 
< 2.5% [1000-2000 Hz]
Load Regulation 0.1% full scale
Line Regulation 0.02% for 10% input line change
Output Noise (20 kHz to 1 MHz, full current output): Three Phase Mode: < 13 mARMS, Single Phase Mode: < 40 mARMS
Temperature Coefficient ± 0.01% of range / °C
Stability ± 0.01 A over 24 hours
DC Offset Current 0.0 A
Output Coupling Transformer coupled
Output Impedance >100KOhm
Voltage Limit Programming Range: 3000CS: 0 to 135 Vrms @ 7.41 A, 0 to 67.5 Vrms @ 14.81 A. 4500CS: 0 to 135 Vrms @ 11.11 A, 0 to 101.3 Vrms @ 14.81 A
Programming Resolution: 0.1 Vrms
Frequency Range: 45 Hz - 2000 Hz. Resolution: 0.01 Hz [<81.91 Hz], 0.1 Hz [> 82.0 to 819.1 Hz], 1 Hz [> 819 Hz]. Accuracy: ± 0.025%. Temperature Coefficient: ± 5 ppm of value / °C. Stability: ± 15ppm of value/year
Phase Range: Phase B/C relative to phase A 0.0 to 360.0°. Resolution: (0.1° < 819.1 Hz), (0.5° > 819.1 Hz). Accuracy: < 1° [45 Hz-1000 Hz],<1° + 1°/kHz [>1000 Hz]
Input Current Input circuit breaker. Breaker protects the equipment only and is not a branch protection device. AC input connection should be made using a suitable branch protection device per local electrical code
Input Voltage Transients Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels
Output Over Voltage Adjustable level constant voltage mode with programmable set point
Open Circuit & Over Temperature Automatic Shutdown
Line Voltage (Three Phase, 3-wire + ground - PE) 3000CS, 4500CS, 9000CS/2, 13500CS/3, 18000CS/4: Standard: 208-230 VLL ± 10%, -400: 400 VLL ± 10%. Note: Each CS chassis requires its own AC service. 3000CS may be operated from 208-230 V L-N single phase AC input between B & C on TB3 for 3000CS
Line VA 3000CS: 5900 VA / 4100 W. 4500CS: 8900 VA / 5900 W (x2 for 9000CS/2, x3 for 13500CS/3, X4 for 18000CS/4)
Line Current 
(per phase)
3000CS: Standard: 19 Arms @ 187 VLL, 3 phase AC input or 32 Arms @ 187 VLN single phase AC input.
4500CS: Standard 31 Arms @ 187 VLL, - 400: 16 Arms @ 360 VLL. Currents shown are for single chassis models.
Currents are per chassis for multi-chassis configurations
Line Frequency & Efficiency Line Frequency: 47-440 Hz; Efficiency: 75% (typical) depending on line and load
Power Factor 0.65 (typical)
Storage Setup Storage: 16 complete instrument setups; User Waveform Storage: 50 User-defined arbitrary waveforms of 1024 points each; Transient Lists Storage: Up to 100 transient steps per list.
Remote Control Interfaces IEEE-488 (GPIB), USB, RS232C, Ethernet (Optional-LAN)
Parameter Frequency Phase Voltage (AC) Current
(AC rms)
Real Power Apparent Power Power 
Range 45.00-81.91 Hz
82.0-819.1 Hz
> 819 kHz
0-360° 0 - 400 0 - 50 A 0.5 kW 0.5 KVA 0.00 - 1.00
Accuracy* (±) 0.1% + 1 digit 0.5° < 500 Hz
2° > 500 Hz
0.05% + 0.25 V 0.1% + 0.15 A
0.1% + 0.05 A
1ø Mode: 0.15% + 9W
3ø Mode: 0.15% + 3W
1ø Mode: 0.15% + 9 VA
3ø Mode: 0.15% + 3 VA
1ø Mode: 0.03
3ø Mode: 0.01
Resolution 0.01 Hz
0.1 Hz
1 Hz
10 mV 1 mA 1 W 1 VA 0.01
* Accuracy specifications are valid above 100 counts. For multi-chassis configurations, Current and Power range and accuracy specifications are per chassis. Frequency measurement accuracy applies to output voltages of 1 Arms or higher
Measurements - Harmonics
Parameter Frequency Fundamental Voltage Current
Range 45-81.91 Hz / 82.0-819.1 Hz / >819 Hz Fundamental Harmonics 2 - 50 Fundamental Harmonics 2 - 50
Accuracy* (±) 0.1% + 1 digit 0.05% + 0.25 V / 0.1% + 0.1%/kHz + 0.25 V 0.5 A / 0.1% + 0.05 A + 0.1% /1 kHz
Resolution 0.01 Hz / 0.1 Hz / 1 Hz 10 mV / 10 mV 10 mA / 10 mA
* Accuracy specifications are in percent of reading for single unit and three phase mode
Physical Dimensions
Dimensions Height: 10.5” (267 mm), Width: 19.0” (483 mm), Depth: 23.0” (584 mm) All dimensions are per chassis. For /2, /3, or /4 model configurations, multiply height by 2, 3, or 4 for total height. Width includes integrated front panel rackmount ears
Weight Chassis: Net: 193 lbs / 87.7 Kg, Shipping: 280 lbs / 127.3 Kg
Vibration and Shock Designed to meet NSTA project 1A transportation levels. Units are shipped in wooden crate with forklift slots
Air Intake/Exhaust Forced air cooling, side air intake, rear exhaust
Temperature Operating Temperature: 0 to 35° C, full power; Storage Temperature: -40 to 85° C

CS Series AC Current Source Programming Manual, Rev: F 6/15/2011 (1.91MB)_Rev F
CS Series, AC Power Source User Manual, Rev: J 3/25/2015 (999kB)_Rev J
CS Series Instrument Control Software Version: 
CS-ICS For 32 bit operating systems (needs Microsoft.Net™ Framwork 1.1). Models: CS Series
V1.0.0.3 40MB 08/11
Windows XP / 7 ( 32 bit, 64 bit ) : USB VCP Driver 12/10/2014 (8.70MB)
Firmware Updates
Flash Loader V1.60 V1.60 2.2MB 11/02/06
CS Firmware V1.35 (CIC910-1V1.35) 02/09/2016 (505Kb) V1.35
LabView Driver
CS Driver, V1.0.0.0 CS LabView 2009 Driver¹ V1. 3.3MB 3/2/2011
1- LabView 2009 and higher
LabWindows CVI
CS Driver CS LabWindows/CVI Driver²
V1.0.0.0 365KB 3/2/2011
2- LabView 2010 and higher

More Product Information

Key Features Ls Series
  • Backward Compatible with L Series
    • Function and bus compatible with the California Instruments L Series
  • Three phase and Single phase modes
    • Ideally suited for avionics and defense applications
  • 3 KVA to 18 KVA Power Levels
    • Match power source and cost to application requirements
  • Transient Programming
    • Test products for susceptibility to AC line disturbances
  • Built-in Measurements
    • Performs voltage, current, and power measurements
  • Advanced Features
    • Arbitrary waveform generation, harmonic analysis, GPIB interface are some of the available options
  • Interface
    • Standard USB & RS232C interface.
    • Optional GPIB & LAN available
  • CE Marked (400V input model ONLY)
    • Safe, reliable, and consistent operation
Key Features Lx Series
  • Backward Compatible
    • Compatible with HP6834B & iL Series AC Sources Function & bus compatible with the Agilent HP6834B & California Instruments iL Series
  • Three phase and Single phase modes
    • Ideally suited for avionics and defense applications
  • 3 KVA to 18 KVA Power Levels
    • Match power source and cost to application requirements
  • Arbitrary Waveform Generator
    • Test products for harmonics susceptibility
  • Built-in Power Analyzer
    • Performs voltage and load current harmonic analysis and waveform acquisition
  • Standard IEEE-488, USB & RS232
    • Remote control interface for ATE system integration include

Key Features
  • Precision Voltage and Current Source 
  • 4500VA to 13500VA Output
  • Single & Three Phase Configurations
  • Computer Control for Automated Systems Remote programming and collection of measurement data
  • Separate Single Phase Outputs of up to 200A and 270V (L-N) Simulation of power levels up to 54 KW
  • Multiple Chassis Configurations for Two & Three Phase Systems Power level simulation up to 162 KW for three phase operation
  • Independent Full Capability Measurement System Monitors load parameters without additional instrumentation
  • Simulate True Power
  • Great for Testing Watt-Hour Meters

  • 3000 VA to 15000 VA of AC Output Power
  • Combines AC/DC source and power analyzer
  • Harmonic analysis of Voltage and Current
  • Programmable Impedance
  • AC, DC and AC+DC Output Modes
  • Multiple Chassis Configurations
  • Powerful output transient generation
  • High Crest Factor Capability
  • Arbitrary waveform generation
  • IEC 61000-3-2 and IEC 61000-3-3

  • High Power AC Source
    • Programmable AC power for frequency conversion and product test applications
  • Expandable Power Levels
    • Available output power of 30, 45, 75 and 90 kVA per unit and multi-unit configurations for power requirements up to 180 kVA and above
  • Remote Control
    • Standard RS232, USB and IEEE-488 (GPIB) and optional LAN interfaces are available for automated test applications.

  • Combination AC and DC Power Source
  • 40-5,000Hz Output Frequencies 
  • Arbitrary and Harmonic Waveform Generation
  • Built-In Digital Power Analyzer 
  • Scope Capture Capability
  • Power Programming Software
  • Constant Power Mode
  • Multi-Box Option
  • High power density in 1U/ 2U chassis up to 3kVA
  • Intuitive touch panel control
  • Innovative iX2™ current doubling technology
  • Multi-language display for global operation
  • Auto paralleling for higher power
  • Single phase 1U models and 1 or 3 phase selectable 2U models
  • Complete avionic test suites (optional)
  • ATE version available in both 1U and 2U

  • 750 VA to 2250 VA of AC Output Power
  • Combines AC/DC source and power analyzer
  • Harmonic analysis of Voltage and Current
  • AC, DC and AC+DC Output Modes
  • Multiple Chassis Configurations
  • Powerful output transient generation
  • High Crest Factor Capability
  • Arbitrary waveform generation
  • Single and Three Phase models available

  • High Power AC and DC Power Source
    • Programmable AC and DC power for frequency conversion and product test applications
  • Expandable Power Levels
    • Available output power of 15, 22.5, 30, and 45 kVA per unit and multi-unit configurations for power
      requirements up to 135 kVA and above
  • Single and Three Phase Mode
    • Phase mode programming on MX22.5-3Pi, MX30-3Pi and MX45-3Pi allows switching between single and
      three phase output modes
  • Arbitrary & Harmonic Waveform Generation
    • User defined voltage waveform and distortion programming
  • Regenerative, bidirectional “Green” Power Solution
    • Automatic crossover between Source and Sink power mode offers regenerative capabilities in AC
      mode. Regenerate up to 100% of the rated output power back to the utility grid during sink mode
      operation. ( -SNK option )
  • Remote Control
    • Standard RS232C & USB along with optional IEEE- 488 & LAN Interfaces are available for automated
      test applications

  • High Power Density: Up to 15 kW in a 3U / 30 kW in a 6U chassis 
  • Wide Voltage Range: 0-40V up to 0-600V, in increments of 5 kW from 5 to 30 kW 
  • Fast Load Transient Response: Protection from undesired voltage excursions 
  • Low RMS and P-P Noise: Suitable for the most sensitive applications 
  • Parallelable up to 150 kW: Expandable as your requirement grows 
  • Modular Design: Upgradeable for the ultimate in investment protection 
  • Sequencing: Program custom waveforms 
  • Easy-to-read Fluorescent Display: SGI supports English, French, German, Italian, Spanish, Chinese, Japanese, and Korean languages 
  • 16-bit Resolution: Optional IEEE-488.2 + RS-232C + Ethernet provides precise control 
  • Ethernet Control: LXI Class C compliant communication through integrated web server 
  • Direct Relay Control: Control output and sense isolation relays, along with polarity relays. (Ethernet Option Only)
  • Hardware Trigger: Ethernet Option Only 
  • 5 Year Warranty

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