Product Manager:Product Manager:Galen ChouGalen Chou

CHROMA ATE INC.CHROMA ATE INC.Programmable AC Source 61500/61600 SeriesProgrammable AC Source 61500/61600 Series

Chroma AC Source FamilyChroma AC Source Family

OutlineOutline

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 SourceA Primitive AC Source

Function GeneratorFunction Generator

Power MeterPower Meter

Power Power AmplifierAmplifier

1. Not easy to setup

2. Inconvenient to use

3. No protection

CC

CC

TransformerTransformer

AC Source StructureAC Source Structure

AC Input AC

OutputInput Stage

Power Stage

Output Stage

Waveform Generator, Control and Measurement Units

UserInterface

User

AC Source Power StagesAC Source Power Stages

Line Input

A/DPower Stage

D/APower Stage

AC Output

Line Input

AC Output

A/DPower Stage

D/APower Stage

A transformer on input, weight is heavy

Linear type, a transformer on output, high impedance

Chroma’s AC Source AdvantageChroma’s AC Source Advantage

Line Input

AC Output

A/DPower Stage

D/DPower Stage

D/APower Stage

Chroma

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

Chroma’s AC Source AdvantageChroma’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.

AC SourceAC Source

ZoZo

Basic : (61500/61600 Series)Basic : (61500/61600 Series)

1. Clean, pure and stable sine waveform AC power1. Clean, pure and stable sine waveform AC power

2. Measurement : Power, voltage, current Monitor2. Measurement : Power, voltage, current Monitor

3. Line regulation test (90 – 264V, 47 - 63Hz)3. Line regulation test (90 – 264V, 47 - 63Hz)

4. Simulation mains for all power systems in the world4. Simulation mains for all power systems in the world

230V/50Hz, 120V/60Hz, 100V/50Hz …230V/50Hz, 120V/60Hz, 100V/50Hz …

5. Auto-test (Remote control)5. Auto-test (Remote control)

What is users’ need ?What is users’ need ?

How much power of AC source dose user 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)

What is users’ need ?What is users’ need ?

Additional : (61500/61600 series)

1. Power Turn ON/OFF phase angle Setting 90° Turn ON for inrush current test.

2. Inrush Current Measurement (Delay time, Interval)

3. 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)

What is users’ need ?What is users’ need ?

Auto Run: Auto Run: Programming for long time test (On/Off or Burn-in)Programming for long time test (On/Off or Burn-in)

61500/61600 Softpanel Function61500/61600 Softpanel Function

Report Function : Report Function : Data Recording stored in a File Data Recording stored in a File

61500/61600 Softpanel Function61500/61600 Softpanel Function

Only testing the specification of input power is not enoughOnly testing the specification of input power is not enough

to verify the UUT. Simulating the power like real worldto verify the UUT. Simulating the power like real world

is the way to get better quality and stability.is the way to get better quality and stability.

Advance Test : (61500 series only)Advance Test : (61500 series only)

1. Transient Voltage Simulation1. Transient Voltage Simulation

2. Distorted Waveform Simulation2. Distorted Waveform Simulation

What else is users’ need ?What else is users’ need ?

Transient OutputTransient Output

Cycle DropoutCycle Dropout Frequency VariationFrequency Variation

SagSag SurgeSurge

Different kind of transient output:Different kind of transient output:

Influence of Transient Output Influence of Transient Output

Example : Power supply of DVD playerExample : Power supply of DVD player

+5V to memory+5V to memory

+3.3V to CPU+3.3V to CPU

+12V to driver+12V to driver

When cycle dropout occurs, output voltage will drop thenback 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. )

Example for Transient Output Test Example for Transient Output Test

Cycle Drop Out TestCycle Drop Out Test

Brown Out TestBrown Out Test

Regulation for Transient OutputRegulation for Transient Output

IEC 61000-4-11 : IEC 61000-4-11 : Voltage dips, short interruptions and Voltage dips, short interruptions and voltage variation immunity testsvoltage variation immunity tests

100%UT

0%UT

40%UT

t (sec)

dipdip shortshort

voltage variationvoltage variation

5s±0.5s

5 periods5 periods 2s±0.2s

ΔU

IEC 61000-4-14 : IEC 61000-4-14 : Voltage fluctuation immunity testVoltage fluctuation immunity test

60s

Un

Un - 10%Un

Un + 10%Un

60s 60s

60s

Regulation for Transient OutputRegulation for Transient Output

f1 tp f1+Δf

tp tp

tp tp

f1f1

f1-Δf

f1+Δf

120s

120s60s

60s

IEC 61000-4-28 : IEC 61000-4-28 : Variation of power frequency immunity testVariation of power frequency immunity test

Regulation for Transient OutputRegulation for Transient Output

61500 AC Source Functions for 61500 AC Source Functions for Transient OutputTransient Output

LIST ModeLIST Mode: Program output waveform sequence by sequence: Program output waveform sequence by sequence

61500 AC Source Functions for 61500 AC Source Functions for Transient OutputTransient Output

PULSE ModePULSE Mode: Insert a waveform into normal voltage: Insert a waveform into normal voltage

61500 AC Source Functions for 61500 AC Source Functions for Transient OutputTransient Output

STEP ModeSTEP Mode : Change from an initial voltage to destination : Change from an initial voltage to destination step by stepstep by step

Transient Output with High VoltageTransient Output with High Voltage

A transient high voltage of main will damage the electrical A transient high voltage of main will damage the electrical products. (It happens usually in China and India.)products. (It happens usually in China and India.)Many companies have asked it as a standard test item. Many companies have asked it as a standard test item.

Chroma solution: Model 6560, or 2 units connecting in series….Chroma solution: Model 6560, or 2 units connecting in series….

400V/0.5sec400V/0.5sec

220V220V

Transient Output with High VoltageTransient 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.

L

N

L

N

UUT

L

N

Master: Fixed Mode 220VMaster: Fixed Mode 220V

Slave: List Mode 180V/0.5 secSlave: List Mode 180V/0.5 sec

220V with 400V/0.5s220V with 400V/0.5s transient transient

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.

Combine 3 Units of AC Sources 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 °)

Distorted WaveformDistorted Waveform

Power Plant Power NetworkPower Plant Power Network

C

LResonance Point Frequency Resonance Point Frequency

ZZoo

IIooPure VPure V Distorted VDistorted V

2Π √LC2Π √LC

11Fr =Fr =

Nonlinear load pollutes the mains Nonlinear load pollutes the mains with distortion current.with distortion current.

Distorted WaveformDistorted Waveform

Harmonic DistortionHarmonic Distortion Interharmonic DistortionInterharmonic Distortion

Clipped Sine WaveformClipped Sine Waveform Low frequency driftLow frequency drift

Different kind of distorted waveform:Different kind of distorted waveform:

IEC 61000-4-13 : IEC 61000-4-13 : Harmonics, Interharmonics including mains Harmonics, Interharmonics including mains signaling at AC power port immunity tests signaling at AC power port immunity tests

Flat CurveFlat Curve

Over SwingOver Swing

SweepSweep

Regulation for Distorted WaveformRegulation for Distorted Waveform

Influence of Distorted WaveformInfluence of Distorted Waveform

Comparing With/Without harmonic component:Same UUT, 2.46A 3.015A, 22% increase

Comparing With/Without interharmonic component:Same UUT, 0.83A 1.3A , 57% increase

Influence of Distorted WaveformInfluence of Distorted Waveform

With voltage interharmonics component:Fi=30.85Hz, level =7% abnormal current waveform

PWM unstable

Influence of Distorted WaveformInfluence of Distorted Waveform

SYNTHESIS :SYNTHESIS : Edit harmonic components (Amplitude & Phase) Edit harmonic components (Amplitude & Phase) of 40 orders to synthesize a new waveform. (50/60Hz)of 40 orders to synthesize a new waveform. (50/60Hz)

61500‘s Functions for 61500‘s Functions for Distorted WaveformDistorted Waveform

INTERHARMONICS INTERHARMONICS : Add a sweeping frequency component : Add a sweeping frequency component (0.01Hz – 2400 Hz) on a normal voltage.(0.01Hz – 2400 Hz) on a normal voltage.It helps to find the resonance point, or the weak point of the UUT.

61500‘s Functions for 61500‘s Functions for Distorted WaveformDistorted Waveform

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

61500‘s Functions for 61500‘s Functions for Distorted WaveformDistorted Waveform

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. .

Application for AC Power DistortionApplication for AC Power Distortion

Measure Harmonic components Re-build Waveform

Application for AC Power DistortionApplication for AC Power Distortion

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

DC Component of AC Power DC Component 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.

DC Output Application of AC Power DC Output Application of AC Power

Connection Method:

Analog Control for AC SourceAnalog 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.

10Vdc10Vdc 300V rms @300V rang300V rms @300V rang150V rms @150V rang150V rms @150V rang

External input VExternal input VOutput VOutput V

424Vdc424Vdc212Vdc212Vdc

2. AC Amplifier Mode: Send an external signal to AC source and amplify it as the output waveform, just like the user‘s need.

10 Vdc10 Vdc 424 Vdc @300V rang424 Vdc @300V rang212 Vdc @150V rang212 Vdc @150V rang

External input VExternal input V

-10 Vdc-10 Vdc -424 Vdc @300V rang-424 Vdc @300V rang-212 Vdc @150V rang-212 Vdc @150V rang

Output VOutput V

Analog Control for AC SourceAnalog Control for AC Source

TTL signals of AC Source 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

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.

Trigger Live

TTL signals of AC Source TTL signals of AC Source

Regulation Test 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.

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 these

models please contact your sales engineer at ValueTronics.

800-552-8258 or 847-800-552-8258 or 847-468-8258468-8258

www.valuetronics.comwww.valuetronics.com