Voltage Dip & Swell Simulator

VDS-2002
Features
Used to evaluate performance such as malfunctions and functional deterioration due to power supply
voltage fluctuations in electronic and electrical equipment.
Simulates the phenomenon of voltage variations and momentary power failures in commercial power
supplies (AC100/200V) and evaluates the resistance of electronic equipment.
In addition to the requirements of the international standard IEC61000-4-11, it is tested in all industries as atolerance evaluation against voltage variations and instantaneous interruptions for electronic equipment.
● Voltage dip & swell simulator conforming to EN/IEC61000-4-11 Ed.3 (2020) Standard● Multiple types AC plug receptacle on the front panel for easy connection of the EUT● Easy settings for the test parameters on the front panel (Voltage variations test is performed by software.)● Realize flexible test conditions setting beyond the Standard with a PC remote control● Allows to conduct the interruption test in DC (DC 125 V / 16 A max)

Specifications
Parameter

Specification

Compliant Standard

IEC 61000-4-11 (1994) 、IEC 61000-4-11 (2004)

Number of Phases

Single Phase

Test ModesEUTat Output voltage 0 to 100%AC/DC
Voltage Interruption test
Sensing, direct mode

Cycle synchronous/asynchronous setting

PC setting

Short/Open modes selection during interruption

Cycle synchronous setting

Main Unit setting

Short mode during interruption

AC voltage dip and swell test
Cycle synchronous/asynchronous setting

Cycle synchronous/asynchronous setting

PC setting

Cycle synchronous setting

Main Unit setting

AC voltage variations test
Sensing mode

Cycle asynchronous setting

PC setting
Main Unit setting (2s, 1s, 2s setting only)

Input voltage range

AC90〜264V 50/60Hz, DC0〜125V

Output voltage range

AC0V〜input voltage+20%, DC0V〜input voltage

Output VA rating

4.224kVA

Output current AC
capability

16Arms80% of input voltage

20Arms （<5s）

70% of input voltage

23Arms （<5s）

40% of input voltage

40Arms （<5s）

MAX Output current
capability

Load regulated Output
voltage variation

16A

AC290Vmax ※2(continuous)

100% of input voltage

DC※3(continuous)(continuous)

AC100〜120V

250A peak Output voltage 100%, <10ms in direct mode

AC220〜240V

500A peak Output voltage 100%, <10ms in direct mode

100% of input voltage 0 –16 Arms

<5%70% of input voltage 0 –23 Arms

<5%

70% of input voltage 0 –23 Arms

<5%

100% of input voltage 0 –40 Arms

<5%Overshoot / undershoot<5%Rise time / fall time

1〜5μs

100 ohm loaded in the Sensing Mode
100 ohm loaded

Voltage Dip/Swell/Interruption Simulator

EUT Power Supply

Voltage Dip

Interruption

EUT

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VDS-2002
Parameter

BASE

VOLTAGESpecification
Percent

PC setting(4%)〜120%Setting

main unit setting

100%Voltage
Setting10〜290V

PC setting±5V

TEST LEVEL

Setting

PC setting
main unitsetting(Interruption, dip, swell)
VoltageSetting

PC setting

PC setting

setting

main unit setting

CYCLESetting
INTERVAL CYCLES

SynchronousｓSetting

Synchronous

ｍｓSetting

AsynchronousｓSetting

Asynchronous

CYCLE

Synchronous

DIP CYCLES

Setting(voltage interruptions, dip

ｍｓSetting

Synchronouscycles)

ｍｓSetting

AsynchronousｓSetting

Asynchronous

Short/Open selectable for 0%0, 40, 70, 80, 120%

Short/Open selectable for 0%(voltage interruptions, dipstarting phase)

Voltage Variations Test

5V step ※10〜290V(0V〜5V step+20%)

5V step※2 arbitrary setting 1V step

Output current 0 to 16A

1-1000 or continuous (0) 1 event step
1, 3, 5, 10, 30, 50, 100、or continuous(Cnt)

8 steps

PC setting

0.5〜5000.5 CYCLE

main unit setting

1, 3, 5, 10, 30, 50, 100, 300, 500 CYCLE、and 10s 10 steps
1〜100sPC setting

0.5 CYCLE steps

1s steps

8.3〜100000.0ms(100s)
1〜36000s(10h)0.1ms steps

1s steps

PC setting

0.01〜5000 CYCLE

main unit setting

0.5, 1, 5, 10, 12, 25, 30, 50, 250, 300 CYCLE

PC setting

0.01 CYCLE steps

0.1〜100000.0ms (100s)

0.1ms steps

0.1〜100000.0ms (100s)

0.1ms steps

1〜36000s(10h)Parameter

DIP PHASE※2※1

0〜120%±5V

No. of Events

5Vstep

Output current 0 to 16A

Short/Open selectable for 0%

Accuracy
REPEAT COUNT(0V〜input voltage+20%)

arbitrary setting 1V step

Accuracy

Percent

percentage with a minimum value of 10V ※1 ※2※1

10steps

1s steps

Specification
PC setting

Phase Anglesetting

SynchronousTime Setting
PC setting

Memory capacity

main unit setting

PC settingAsynchronous

PC setting
PC setting
main unit setting

0〜360°

1° steps

0, 45, 90, 135, 180, 225, 270,315, 360°

9 steps (45° steps)

0〜19.9ms

0.1ms steps 50Hz

0〜16.6ms

0.1ms steps 60Hz

0.1s〜10s

0.1s steps output voltage 0〜120%

Up to 10 tests can be programmed and stored as long as the recording media such as PC
HD, FD, etc. allow.
5 tests
AC100〜240V±10%

Input voltage from EUT

50/60HzInterface

Optical interface Optional optical converter RS-232 or USB selection

Operating temperature

15〜35℃

Operating humidity

25〜75%R.H. (no condensation)

External dimensions / Weight(W)430×(H)745×(D)600mm (excluding protrusions) / approx.150kg

Power consumption

120VA(AC100〜240V 50/60Hz)※ 1：percent against input voltage※２：not compliant to IEC 61000-4-11(1994) and IEC 61000-4-11 Ed2 (2004) , ed.3 (2020) Standards when voltage output is >100%※３：The input voltage must be free of distortion and voltage variations.

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Front Panel
Digital indicator : Indicates test level / Dip cycle / Dip phase / Interval / Number of tests
LINE switch : ON / OFF of power supply to EUT
SW1 monitor switch : Output the input voltage (base voltage) in LINE ON state.
Switching between Sensing mode (Correction of voltage fall due to load variation)
and Direct Mode (Outputs the input voltage constantly) by press-and-hold operation
SW2 monitor switch : Indicates test level (Set % value for input voltage) in LINE ON state
Memory number switch : Memorizes up to 5 test patterns
Test level switch : Sets test level
Dip cycle switch : Sets time from start of dip or swell and its finish
Dip phase switch : Sets phase angle from start of dip or swell and its finish
Interval cycle switch : Sets repetition cycle
Repeat switch : Sets the number of tests
Warning lamp : Turns on in LINE on state. Blinking in START of tests
START switch : Starts the test. Impossible to do without LINE ON.
STOP switch : Stops the test. Does not LINE OFF.

Test level

Dip cycle
Dip phase(Variation time) (Start phase angle)

Intervalcycle■Options
Software (VDS-2002-PC) MODEL : 14-00036A
Allows standardized test settings and user-defined test settings.
In addition to the IEC test level, there are various setting items such as dip-up cycle, repetition cycle, interval cycle, etc., which greatly supports voltage
fluctuation testing.

USB Optical Module Kit MODEL : 07-00022A
Connection adaptor used for PC remote control of thesimulator.
USB optical conversion, equipped with 5m optical fiber
cablew w w. n o i s e k e n . c o m

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IEC61000-4-11 Ed.3 Test Standard Overview
1. GeneralImmunity test standard for electrical / electronic equipment which are connected to low voltage power supplies networks whether they aremalfunctioned or resistible against voltage dips, short interruptions or voltage variations.
Power capacity of equipment under the test (EUT) shall be 16A per phase. This standard applies to equipment connected to 50/60 Hz AC
supply network and does not apply to equipment operating on 400Hz AC.
2. Test Level
・The voltages in this standard use the rated voltage for the equipment (UT) as a basis for voltage test level specification.
・if the voltage range does not exceed 20 % of the lower voltage specified for the rated voltage range, a single voltage within that range may
be specified as a basis for the test level specification (UT).
1. Voltage dips and short interruptions
Table 1 – Preferred test level and durations for voltage dips
Classatest level and durations for voltage dips (ts) (50 Hz / 60 Hz)
Class 1Case-by-case according to the equipment requirements
Class 20% during 1 / 2 cycle
0% during 1 cycle
70% during 25 / 30c cycles
Class 30% during 1 / 2 cycle
0% during 1 cycle
40% during 10 / 12c cycle 70% during 25 / 30c cycle 80% during 250 / 300c cycleClass X bSpecialSpecialSpecialSpecial
Speciala. Classes as per IEC 61000-2-4 ; see Annex B
b. Class × can be any level determined by consent between the EUT manufacturer and the simulator supplierc. “25 / 30 cycle” means “25 cycles for 50 Hz test” and “30 cycles for 60 Hz test”* Each dip% shall be voltages against the rated voltages

Table 2 – Preferred test level and durations for short interruptions
Class
Test level and durations for short interruptions (ts) (50 Hz / 60 Hz)
Class 1Case-by-case according to the equipment requirements
Class 20% during 250 / 300* cycle
Class 30% during 250 / 300* cycle
Class X
Speciala. Classes as per IEC61000-2-4 ; see Annex B
b. Class × can be any level determined by consent between the EUT manufacturer and the userc. “250/300 cycle” means “250 cycles for 50 Hz test” and “300 cycles for 60Hz test”
U0525t(periods)

NOTE The voltage decreases to 70% for 25 periods. Step at zero crossing.

Voltage dip - Example: 70% voltage dip sine wave graph
U(t)

Δt=tr

U(t)

Δt=tr

Δt=tr

Δt=tr

90%

90%

10%
0%
10%tts0%tts
t f：fall time

t f：fall time

t r：rise time

t r：rise time

t s：duration of reduced voltage

t s：duration of reduced voltage

Voltage dip - Example: 40% voltage dip sine wave graph at 90°w w w. n o i s e k e n . c o m

Short interruption

IEC61000-4-11 Ed.3 Test Standard Overview
2. Voltage variations (Optional)
Table 3 – Timing of short-term voltage variations
Voltage test level

Time for decreasing voltage(td)AbruptSpecial７０％
ＸUt (RMS)

Time at reduced voltage (ts)Time for increasing voltage (ti)

100%1 cycle
Special25/30 cycles
Special70%* Class × can be any level determined by consent between the EUT manufacturer
and the simulator supplier* “25/30 cycle” means “25 cycles for 50Hz test” and “30 cycles for 60Hz test”

0%td

tsti

td : Time for decreasing voltage
ts : time at reduced voltage
ti : time for increasing voltage

3. Characteristics and performance of the generator
As required in Table 1, ±5% of residual voltage value

Output voltage at no load
Voltage change with load at the output of the generator
100% output, 0 A to 16 A
80% output, 0 A to 20 A
70% output, 0 A to 23 A
40% output, 0 A to 40 AOutput current capabilityLess than 5 of UTLess than 5 of UTLess than 5 of UTLess than 5 of UT
16A r.m.s per phase at rated voltage. The generator shall be capable of carrying 20A at 80% ofrated value for a duration of 5s. It shall be capable for carrying 23A at 70% of raged voltage and 40A at 40%
rated voltage for a duration of 3s. (This requirement may be reduced according to theEUT rated steady-state supply current. See Clause A. 3).
Not to be limited by the generator. However, the maximum peak capability of the generator need notexceed 1000 A for 250 V to 600 V mains, 500 A for 200 V to 240 V mains, or 250 A for 100 V to 120 Vmains.
Less than 5% of UT

Peak inrush current capability (no requrement for voltage variation tests)

Instantaneous peak overshoot / undershoot of the actual
voltage, generator loaded with 100 Ω resistive load
Voltage rise (and fall) time tr (and tf) see Figures 1b) and 2,
during abrupt change, generator loaded with 100 Ω resistive load
Phase shifting (if necessary)
Phase relationship of voltage dips and interruptions with the power frequency
Zero crossing control of the generators

Between 1μs and 5μs
0° to 360°
Less than ± 10°± 10°■ EUT Peak Inrush Current requirement

To oscilloscope
Voltage
Interrupt
generator

TB

GCRComponents
G

voltage interrupt generator, switched on at 90° and 270°T

current probe, with monitoring output to oscilloscopeB

rectifier bridge

R

bleeder resistor, not over 10000 Ω or less than 100 ΩC

1700 μF ± 20% electrolytic capacitor

Circuit for determining the inrush current drive capabilityof the short interruptions generator

In order to be able to use a low-inrush drive current capability generator to test a particular EUT, that EUT’s measured inrush current shallbe less than 70% of the measured inrush current drive capability of the generator.

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IEC61000-4-11 Ed.3 Test Standard Overview
4. Test Setup
The test shall be performed with the EUT connected to the test generator with the shortest power supply cable as specified by the EUTmanufacturer. If no cable length is specified, it shall be the shortest possible length suitable to the application of the EUT.

5. Test Procedure■ Execution of the test
・The EUT shall be tested for each selected combination of test level and duration with a sequence of three dips / interruptions withintervals of 10s minimum (between each test event).
・Each representative mode of operation shall be tested.
・For voltage dips, changes in supply voltage shall occur at zero crossings of the voltage, and at additional angles considered criticalby product committees or individual product specifications preferably selected from 45°, 90°, 135°, 180°, 225°, 270° and 315°on eachphase. For short interruptions, the angle shall be defined by the product committee as the worst case. In the absence of definition,
it is recommended to use 0°for one of the phases.
・For voltage variations (Optional), the EUT is tested to each of the specified voltage variations, three times at 10s interval for the mostrepresentative modes of operations.

■ Climatic and Electromagnetic Conditions
Ambient temperatureRelative humidity
Atmosopherical pressure
Electromagnetic environment

15°C ～ 35°C
25% ～ 75%
86 kPa ～ 106 kPa (860 hPa (mbr) ～ 1060 hPa (mbr))
Level which does not affect the test result

6. Evaluation of Test Results and Test Report
The test results shall be classified in terms of the loss of function or degradation of performance of the equipment under test, relative toa performance level defined by its manufacturer or the requestor of the test, or agreed between the manufacturer and the purchaser of theproduct. The recommended classification is as follows:1) Normal performance within limits specified by the manufacturer, requestor or purchaser;
2) Temporary loss of function or degradation of performance which ceases after the disturbance ceases, and from which the equipment
under test recovers its normal performance, without operator intervention;3) Temporary loss of function or degradation of performance, the correction of which requires operator intervention;4) Loss of function or degradation of performance which is not recoverable, owing to damage to hardware or software, or loss of data.
Generally, as far as the EUT can be immune to the surges which is injected in the all specified period and it satisfy the functional requirements according to the product specification, the test result can be judged as “Good”.
The test report shall contain the test conditions and the result.
Notes: This test set-up is quoted from IEC61000-4-11 Ed.3.0 (2020) Standard.
Please refer to the Standard if more details are required.

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