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Product Manager: Galen Chou

CHROMA ATE INC. Programmable AC Source 61500/61600 Series. Product Manager: Galen Chou. Chroma AC Source Family. Outline. 1. What is programmable AC source ? 2. What is user’s need ? 3. What do they test with AC source ? 4. Functions of Chroma AC sources. A Primitive AC Source.

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Product Manager: Galen Chou

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  1. CHROMA ATE INC. Programmable AC Source 61500/61600 Series Product Manager: Galen Chou

  2. Chroma AC Source Family

  3. Outline 1. What is programmable AC source ? 2. What is user’s need ? 3. What do they test with AC source ? 4. Functions of Chroma AC sources

  4. A Primitive AC Source 1. Not easy to setup 2. Inconvenient to use 3. No protection Power Meter Function Generator Transformer C Power Amplifier C

  5. Power Stage Output Stage Input Stage Waveform Generator, Control and Measurement Units User Interface AC Source Structure AC Input AC Output User

  6. A/D Power Stage D/A Power Stage A/D Power Stage D/A Power Stage AC Source Power Stages Linear type, a transformer on output, high impedance Line Input AC Output A transformer on input, weight is heavy Line Input AC Output

  7. A/D Power Stage D/D Power Stage D/A Power Stage Chroma’s AC Source Advantage Chroma Line Input AC Output 1. No low -frequency transformer, lighter than others 2. Standard PFC input, save power and less interference to main 3. No transformer on output, low impedance

  8. Zo AC Source Chroma’s AC Source Advantage Output impedance: Zo = Ro + Lo High impedance: Voltage drop, Current inhibit, High frequency current filter, not good for testing IEC61000-3-2 The lab doesn’t use the AC source with a transformer on output.

  9. What is users’ need ? Basic : (61500/61600 Series) 1. Clean, pure and stable sine waveform AC power 2. Measurement : Power, voltage, current Monitor 3. Line regulation test (90 – 264V, 47 - 63Hz) 4. Simulation mains for all power systems in the world 230V/50Hz, 120V/60Hz, 100V/50Hz … 5. Auto-test (Remote control)

  10. What is users’ need ? How much power of AC source dose user need? Example: Test 300W (output) power supply 1. Ask the efficiency: Input power = 300W/0.8 = 375W 2. Ask the Power Factor: Input VA = 375/0.75 = 500VA 3. Ask if test OPT: Max VA = 500VA x 1.3 = 650VA 4. Ask the low line : Max input current : 650VA/90V = 7.22A At least, the customer needs 61502/61602 (1KW) 5. Ask the inrush current: If 45Apeak is needed at 230V, then he needs 61504/61604 (2KW)

  11. What is users’ need ? • Additional : (61500/61600 series) • Power Turn ON/OFF phase angle Setting • 90° Turn ON for inrush current test. • 2. Inrush Current Measurement (Delay time, Interval) • Voltage/Frequency Slew Rate Setting • a. Operate for range scanning (90V-264V 或 47H – 63Hz ) • b. Raising the voltage gradually, power on UUT • with less inrush current • 4. Voltage/Frequency Save and Recall ( One-key Recall)

  12. 61500/61600 Softpanel Function Auto Run: Programming for long time test (On/Off or Burn-in)

  13. 61500/61600 Softpanel Function Report Function : Data Recording stored in a File

  14. What else is users’ need ? Only testing the specification of input power is not enough to verify the UUT. Simulating the power like real world is the way to get better quality and stability. Advance Test : (61500 series only) 1. Transient Voltage Simulation 2. Distorted Waveform Simulation

  15. Transient Output Different kind of transient output: Sag Surge Frequency Variation Cycle Dropout

  16. Influence of Transient Output Example : Power supply of DVD player +5V to memory +3.3V to CPU +12V to driver When cycle dropout occurs, output voltage will drop then back to normal level. The machine might shut down because of improper dropping rate of voltage. (Memory might be reset, but CPU might work as usual. )

  17. Example for Transient Output Test Cycle Drop Out Test Brown Out Test

  18. 100%UT 40%UT 0%UT t (sec) Regulation for Transient Output IEC 61000-4-11 : Voltage dips, short interruptions and voltage variation immunity tests dip short voltage variation

  19. 60s 5s±0.5s ΔU Un + 10%Un 60s 5 periods 5 periods 60s 60s Un 2s±0.2s Un - 10%Un Regulation for Transient Output IEC 61000-4-14 : Voltage fluctuation immunity test

  20. f1 f1+Δf tp f1+Δf 60s tp tp 120s f1 tp tp f1 120s 60s f1-Δf Regulation for Transient Output IEC 61000-4-28 : Variation of power frequency immunity test

  21. 61500 AC Source Functions for Transient Output LIST Mode: Program output waveform sequence by sequence

  22. 61500 AC Source Functions for Transient Output PULSE Mode: Insert a waveform into normal voltage

  23. 61500 AC Source Functions for Transient Output STEP Mode : Change from an initial voltage to destination step by step

  24. Transient Output with High Voltage A transient high voltage of main will damage the electrical products. (It happens usually in China and India.) Many companies have asked it as a standard test item. Chroma solution: Model 6560, or 2 units connecting in series…. 400V/0.5sec 220V

  25. L N UUT L N L N Transient Output with High Voltage 2 units of AC Source with synchronizing signal: Use 3-phase Mode, 61500/61600 as the Master, 61500 as the Slave. 220V with 400V/0.5s transient Master: Fixed Mode 220V Slave: List Mode 180V/0.5 sec

  26. 2 Units of AC Source Application The voltage resonance happens when EMI filter plugs into the main. Using AC Source to simulate the disturbance effect.

  27. Combine 3 Units of AC Sources Chroma 61500/61600 AC Source : 3 units can be combined to a 3-phase AC Power Source (1 Master, 2 Slave units with setting the phase 120° and 240 °)

  28. L C 1 Fr = 2Π √LC Distorted Waveform Power Plant Power Network Nonlinear load pollutes the mains with distortion current. Io Pure V Distorted V Resonance Point Frequency Zo

  29. Distorted Waveform Different kind of distorted waveform: Interharmonic Distortion Harmonic Distortion Clipped Sine Waveform Low frequency drift

  30. Regulation for Distorted Waveform IEC 61000-4-13 : Harmonics, Interharmonics including mains signaling at AC power port immunity tests Sweep Flat Curve Over Swing

  31. Influence of Distorted Waveform Comparing With/Without harmonic component: Same UUT, 2.46A 3.015A, 22% increase

  32. Influence of Distorted Waveform Comparing With/Without interharmonic component: Same UUT, 0.83A 1.3A , 57% increase

  33. Influence of Distorted Waveform With voltage interharmonics component: Fi=30.85Hz, level =7% abnormal current waveform PWM unstable

  34. 61500‘s Functions for Distorted Waveform SYNTHESIS : Edit harmonic components (Amplitude & Phase) of 40 orders to synthesize a new waveform. (50/60Hz)

  35. 61500‘s Functions for Distorted Waveform INTERHARMONICS : Add a sweeping frequency component (0.01Hz – 2400 Hz) on a normal voltage. It helps to find the resonance point, or the weak point of the UUT.

  36. 61500‘s Functions for Distorted Waveform WAVEFORM EDITOR : Edit waveform by harmonic orders on softpanel, send the data and save to User Waveform of AC Source. It can be used on every frequency but less accuracy.

  37. Application for AC Power Distortion With the customers or facilities being oversea, the input power problem can’t be solved in a short time. Solution: 1. Measure the harmonic components by Power Analyzer on facility. 2. Re-build the waveform by SYNTHESIS function of AC Source, RD or QC can test it on the lab. .

  38. Application for AC Power Distortion Measure Harmonic components Re-build Waveform

  39. DC Component of AC Power It contains DC component on some AC power sources, like UPS. 1. Current unbalance. Input rectifier may be damaged. 2. Input transformer saturation (DC current) Using AC Source AC+DC mode to simulate. Without DC component With DC component

  40. DC Output Application of AC Power Use optional unit A615008, DC Noise Filter, when output DC voltage. It can help to decrease the noise, and increase the stability. Connection Method:

  41. Analog Control for AC Source 1. DC Level Control Mode: Use an external DC voltage to control the amplitude of output AC voltage. Frequency is set on AC Source. 424Vdc 212Vdc Output V External input V 10Vdc 300V rms @300V rang 150V rms @150V rang

  42. Analog Control for AC Source 2. AC Amplifier Mode: Send an external signal to AC source and amplify it as the output waveform, just like the user‘s need. External input V Output V 10 Vdc 424 Vdc @300V rang 212 Vdc @150V rang -424 Vdc @300V rang -212 Vdc @150V rang -10 Vdc

  43. TTL signals of AC Source 1. AC_ON : Up to high level when AC source output. Counting time interval between power-on and normal operation. 2. Synchronize (Transient) : Send a pulse signal when output change. For external trigger or system integration

  44. TTL signals of AC Source 3. Fault : TTL level becomes low when protection occur. For notice or system integration 4. Remote_Inhibit : Inhibit the output when the signal becomes low. External control for system integration. TriggerLive

  45. Regulation Test AC Source offers a pure and stable voltage to UUT. EN61000-3-2 Limits for harmonic current emissions EN61000-3-3 Limitation of voltage fluctuations and flicker Haefely use Chroma AC source as a standard source.

  46. Do you have Questions? For more information on the Chroma 61500 / 61600 Series AC Power Sources or if you would like to purchase one of thesemodels please contact your sales engineer at ValueTronics. 800-552-8258 or 847-468-8258 www.valuetronics.com

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