Atec Omni-3, Omni-37i User Manual

n AC Source Line Impedance Network

Works in combination with i Series and

iX Series AC Source models

n Compliant Reference Impedance

Meets IEC 1000-3-3 Flicker test specification

requirements

n Single and Three Phase Models

Supports single and three phase IEC

compliance test setups

n Bypass Mode

Low impedance path mode to disconnect

reference impedance

n 18.5 or 37.0 Amps per Phase

Capable of supporting all products that need

to be tested for compliance

n Remote Control Interface

Control of Bypass mode through power source controller for automated test operation

OMNI-1-18i / OMNI-3-18i

OMNI-3-37i

For IEC1000-3-3 (Flicker) Testing

Reference Impedance

Network

Flicker Tests

Existing IEC regulations require flicker testing for a large class of electrical and electronic equipment. Flicker occurs when the current drawn by an electrical device causes a voltage drop on the line due to the line impedance. Flicker measurements require a controlled environment. EN 61000-3-3 / IEC 1000-3-3 deals with flicker measurement requirements. This standard describes the required test setup, which includes a precision AC source having a specific impedance. By measuring the voltage drop across the standard impedance caused by the change in current drawn by the EUT (Equipment Under Test), the amount of flicker caused by the load can be determined. The characteristics of the standard impedance must be precisely controlled at the test frequency of 50 Hz.

OMNI option

The OMNI-1-18i, OMNI-3-18i and OMNI-3-37i were specifically designed to meet the IEC 1000-3-3 reference impedance requirements when used in conjunction with an i Series or iX Series AC power

source. The OMNI-1-18i and OMNI3-18i are capable of handling the maximum 16 A per phase current required under the IEC standard. The OMNI-3-37i supports 32 A per phase.

Bypass Mode

Bypass mode of operation causes the reference impedance in the EUT power paths to be shunted to create virtually zero impedance. This electrically removes the reference impedance between the source and the EUT. In this mode, testing for other applications such as IEC 1000-3-2 (Harmonics) that don’t require the reference impedance is possible without physically having to disconnect it.

Engage Mode

The Engage mode activates the reference impedance path. This mode should be used for IEC 10003-3 (Flicker) test applications. The default mode of operation for the OMNI is the Bypass mode so it is important to select the correct mode of operation when performing IEC 1000-3-3 tests.

Manual Control

When used with a power system that lacks direct control capability, the engage or bypass mode can be selected from the front panel. LED’s clearly indicate the status of the OMNI. At power up, the OMNI defaults to the bypass mode.

Remote Control

When used with the i Series or iX Series of programmable AC power sources, the engage or bypass mode of operation are controlled from the AC Source front panel, or via the Power Source’s RS232 or IEEE 488 interface. The OMNI front panel is disabled in this case; however, the LED’s still indicate the status of the OMNI.

Functional Design

The OMNI-1-18i and OMNI-3-18i are housed in a slim line 3.5” high cabinet that matches the style of the i Series and iX Series AC power source. The OMNI-3-37i is contained in a 5.25” high cabinet. Either cabinet can be rack mounted using the included rack mount handles.

Rack Mounting

For rack mount applications especially three phase systems - the optional rack mount slides (-RMS) are recommended. All units provide carrying handles on the front of the unit with integrated rack ears.

Ordering Information

Models:

OMNI-1-18i

Reference Impedance network for 3001i/iX phase AC source.

OMNI-3-18i

Reference Impedance network for 15003i/iX source.

OMNI-3-37i

Reference Impedance network for 30003i/iX source.

Note 1: Models 3001iX, 5001iX and

15003iX provide programmable

impedance (dynamic impedance)

which may be used in lieu of the

OMNI lumped impedance. California

Instruments offers the OMNI option for

those users insisting on the use of a

lumped reference impedance.

Note 2: Model 30003iX does not offer

programmable impedance. The

OMNI-3-37i is required to support IEC

Flicker tests.

Options

-RMS Rack mount Slides. The use of rack mount slides or a rack shelf is recommended when installing the OMNI in a 19” rack.

Line Cord Options:

-PC1Continental Europe

-PC3United Kingdom

* One North American right angle Line cord is included. Optional line cords are straight which adds about 1 inch of depth.

Supplied with:

• North American Line Power

Cord

• Rack mount handles

• Instruction Manual

or 5001i/iX1 single

three phase AC

Specifications

Input

Line Voltage 115 Vac±10% / 230 Vac±10% Line Current (typ.) 200 mA @ 115 Vac / 60 Hz

110 mA @ 230 Vac / 50 Hz Line Frequency 47-63 Hz Fuse Rating 0.25 A slow acting @ 115 Vac

0.125 A slow acting @ 230 Vac

Output OMNI-1-18i OMNI-3-18i OMNI-3-37i

Phases 1 3 3 Engage/Flicker Mode:

Max. Current 18.5 A 18.5 A / ø 37.0 A / ø

Useable range 2.0 - 18.5 A 2.0-18.5 A / ø 2.0 - 37.0 A / ø

Bypass Mode:

Max. Current 37.0 A 37.0 A / ø 74.0 A / ø

Impedance @ 50 Hz Engage/Flicker Mode:

Phase 0.24 + j0.15 Ω 0.24 + j0.15 Ω 0.24 + j0.15 Ω

Neutral 0.16 + j0.10 Ω 0.16 + j0.10 Ω 0.16 + j0.10 Ω

Accuracy < 5 %

Mechanical

Dimensions 3.5” x 19” x 22” 5.25” x 19” x 22”

(H x W x D) 89 x 480 x 560 mm 133x480x560

Weight 31 lbs 37 lbs 62 lbs

14 kg 17 kg 28 kg

Connectors

Input AC IEC 320 Load Input and

Output

Controls and Indicators

Power On/Off toggle switch Flicker On/Off push button Power Led Bypass mode Led Flicker mode Led

Compression terminals

Contact California Instruments:

Web page: http://www.calinst.com

< 5 % < 5 %

Toll-Free: 800-4AC-POWER

800 422-7693

FAX: 858 677-0940

Email: sales@calinst.com

9689 Towne Centre Drive, San Diego CA, 92121-1964 (858) 677-9040 FAX : (858) 677-0940