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EPTS Options
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Electronic Power Transfer Switch Option

Available for Asia and European Markets.  North America availability early 2024
The Pacific Power Source EMC Compliance Test Systems may be equipped with an electronic power transfer switch (EPTS) module that supports the requisite voltage rise and fall slew rates for IEC AC Voltage dips and Interruptions and Voltage Unbalance immunity testing per IEC61000-4-11, IEC61000-4-27 and IEC61000-4-34.

This model series consists of several system configurations to accommodate both single and three phase compliance testing with current levels starting at 16Arms up to 100Arms.  All EPTS models are provided with Windows 10 GUI software with IEC61000-4-11 (AC < 16Arms/phase), IEC61000-4-27 (AC 3 Phase < 16Arms/phase) and IEC61000-4-34 (AC < 75Arms/phase) Immunity test software.



For questions regarding the EMC Compliance Test Systems and or custom solutions, please contact us directly or try our live chat.

Models Table
Key Features
Brochures & Manuals


The EPTS Option allows EMC Test labs to perform full compliance testing of products to the following IEC standards:

IEC 61000-4-11 AC Voltage Dips, Interruptions and Variations to 16A/phase
IEC 61000-4-27 Three Phase Voltage Unbalance to 16A/phase
IEC 61000-4-34 AC Voltage Dips, Interruptions and Variations to 75A/phase

See the ECTS2 systems product pages for a comprehensive and cost effective solution to all of your EMC compliance testing needs!



Models Table

Voltage Dips and Interruptions Electronic Power Transfer Switch Options

Model Max Current Output Form
EPTS-16A-1 16 A Single Phase
EPTS-16A-3 16 Arms / phase Three Phase
EPTS-32A-1 32 A Single Phase
EPTS-32A-3 32 A / phase Three Phase
EPTS-75A-1 75 A Single Phase
EPTS-75A-3 75 A / phase Three Phase
EPTS-100A-1 100 A Single Phase
EPTS-100A-3 100 A / phase Three Phase


Key Features

EPTS Option Key Features

  • AC Voltage Dips, Interruptions and Variations
  • Available in Single or Three Phase Three versions
  • Requires second AC Source or AC Line for Nominal Voltage
  • Synchronizes to AC Line and provides sync out to programmable AC source
  • EMC Test Software for AC voltage dips, interruptions and variations
  • Test Files for IEC61000-4-11, -4-27 and -4-34 Included
  • Create and save custom test sequence files using included Windows GUI Software
  • Detailed test reports to documents EUT compliance
  • Wide Range of Current Levels Available
  • Meets required 1 ~ 5 usec rise/fall time for IEC61000-4-11/34
  • Up to 0-400 VAC L-N / 690V L-L Test Voltage
  • USB Interface
  • AC Bias Input: 120Vac or 230Vac, 50/60Hz


EPTS Option Applications

IEC61000-4-11, IEC61000-4-27, IEC61000-4-34

When combined with ECTS2 Harmonics and Flicker Test System, AFX AC & DC power source or LMX AC Power Source.

AC Voltage Dips, Interruptions, Variations and Unbalance

The EPTS is designed to work with two AC sources, one of which must be programmable. In locations where the grid voltage is stable and has the correct voltage and frequency, the grid can be used for the nominal test voltage. The dips and interruptions levels are always provided by the rogrammable AC source.

Three Phase AC Voltage Unbalance

The EPTS Windows also supports Voltage Unbalance immunity testing for 3 phase loads per IEC 61000-4-27.



EPTS Option Specifications

Test Voltage Inputs:
AC: 3 Phase + Neutral

Phase Sync (AC Only):
Range: 0.0° ~ 359.9°
Accuracy: 0.3°

Test Voltage:
Up to 400Vac
Over/Undershoot: < 5% UT

IEC Modes:
IEC61000-4-11, IEC61000-4-27, IEC61000-4-34

Dimensions and Weights:
2U Models
HxWxD: 89 x 425 x 552 mm
3.5″ x 16.7″ x 20.5″
11.5 Kg / 25.4 lbs

4U Models
HxWxD: 178 x 432 x 670 mm
7″ x 17″ x 26.4″
42.5 Kg / 93.7 lbs


Electronic Power Transfer Switch – 4U (EPTS)
Electronic Power Transfer Switch – 4U (EPTS) 

Electronic Power Transfer Switch – 2U (EPTS)
Electronic Power Transfer Switch – 2U (EPTS) 

EPTS Graphical User Interface 4 Windows Test Sequence Screen
EPTS Graphical User Interface 4 Windows Test Sequence Screen 

Brochures & Manuals

Product Brochure

Download brochure to review product and application notes.

Technical and Application Assistance

Pacific Power Source's seasoned sales and service team is here to help via chat, email or call 1-800-854-2433 or +1-949-251-1800.




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