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TTR

™

100

Handheld TTR

■

Fully automatic; fast; easy-to-use;

handheld; robust; lightweight

■

Battery powered with power-saving and

shutdown function

■

Tests turns ratio, phase displacement,

excitation current, winding resistance

and polarity

■

Meets all IP54 requirements

■

RS232 for data transfer and printing

■

Stores 200 test results and 100 user-

defined transformer test settings

■

Six user-selectable languages

TTR™100

Handheld TTR

DESCRIPTION

The Megger TTR100 is an automatic handheld, battery

operated transformer turns ratio test set used to measure

the turns ratio, excitation current, phase displacement, dc

resistance and polarity of windings in single- and three-

phase distribution transformers (tested phase by phase),

potential & current transformers, and tapped transformers.

Deviations in the mentioned measurements will quickly

indicate problems in transformer windings or in the

magnetic core circuits.

The unique design of the TTR100 allows the user to

operate the test set while holding it in one hand. No other

transformer test set offers this capability. It effectively

eliminates the user from having the kneel or bend down

to operate the instrument and speeds up testing time.

Realizing the extreme environments in which the TTR100

must operate, special attention has been paid to making it

extra rugged, with a high impact, shock resistant case, yet

incredibly lightweight at 3.3 lb. (1.5 kg). It weights less

than any other commercially available instrument on the

market.

Its rugged and robust design makes this instrument well

suited for use in a variety of harsh environments. The

TTR100 is particularly suited for testing in substations and

transformer-manufacturing environments where testing

single and three-phase transformers can be performed.

The TTR100 pr

ovides r

eliable r

esults, helping the user in

determining the condition of the transformer under test. It

features a high contrast LCD screen which can be seen in

bright or ambient light.

The TTR100 comes equipped with specially designed leads

which provide the necessary flexibility needed in all

weather conditions.

This unit measures the highest turns ratio in the industry

with an accuracy of 0.1% or better and with the lowest

excitation voltage. No other instrument’s performance is

comparable that is commercially available today. Another

excellent feature of this TTR is the ability to accurately

measure phase deviation (in minutes or centiradians) of

the transformer primary versus secondary. This

measurement is also useful in verifying phase errors in PTs

and CTs.

The TTR100 features special software capabilities. It comes

equipped with sufficient onboard memory to store up to

200 test results (including test report header information)

in the field for later retrieval, as well as 100 user

-defined

transfor

mer settings. Test r

esults can be printed on an

optional serial printer whenever a hard copy is desired, or

the data can be downloaded to a PC. Identification of

individual test r

eadings is also easily done. The system

software allows entry of the transformer alphanumeric

serial number, transformer type and tap information

(numerical, alphabetical, or alpha-numerical) for each test

performed.

The TTR100 comes with a Windows

based software

ogram that per

mits download of test data fr

om the

instrument to a PC database. Data stored in the database

can be retrieved at a later date and test reports can be

printed to assist in the pr

eparation of management and/or

analysis reports. These reports are easily transmitted via

e-mail.

1 2 3 4 5 6

Sommario

Pagina 1 - Handheld TTR

TTR™100Handheld TTR Fully automatic; fast; easy-to-use;handheld; robust; lightweight Battery powered with power-saving andshutdown function Tests turn

Pagina 2

TTR™100Handheld TTRAPPLICATIONSThe proper operation of a transformer relies almostentirely on the electrical properties of its windings. Toensure cont

Pagina 3

TTR™100Handheld TTR Automatic self-calibration for each test. Rugged, lightweight design ideally suited for a harshfield and substation environment. T

Pagina 4

TTR™100Handheld TTROPTIONAL ACCESSORIES Power Inverter It may be necessary to have aportable power source in thefield. A power inverter using avehicle

Pagina 5 - ORDERING INFORMATION

Order a TTR100 configured to your specific application. To determine the catalog number, fill in the blanks below with thecorresponding number from th

Pagina 6 - Single-Phase Handheld TTR

UK Archcliffe Road, DoverCT17 9EN England T (0) 1 304 502101 F (0) 1 304 207342UNITED STATES 4271 Bronze WayDallas, TX 75237-1088 USAT 1 800 723 28

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