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Three-Phase TTR

Transformer Turns Ratio Test Set

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Fully automatic operation

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Measures three phases simultaneously

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Highest ratio measurement (20,000:1);

highest accuracy (0.1%)

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Built-in storage and downloading

capabilities

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Measures ALL power transformers,

PTs and CTs

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Displays % error vs. name plate and

pass/fail limits

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Operator choice of “quick” test or

complete “full” test

Three-Phase TTR

Transformer Turns Ratio Test Set

DESCRIPTION

The Three-Phase Automatic TTR is designed to measure

the turns ratio of power, instrument, and distribution

transformers in a substation or manufacturing environment.

At 16.5 lbs (7.5 kg), it weighs less than any other

commercially available instrument. A rugged and robust

design makes this TTR well suited for use in a variety of

harsh environments. The TTR is also particularly suited for

testing in power transformer manufacturing environments

where testing of complex, three-phase substation power

transformers can be performed quickly while minimizing

the possibility of errors.

This new TTR measures the highest turns ratio range in the

industry (10,000:1) and also provides the highest accuracy

(0.1%). No other instrument’s performance is comparable

that is commercially available today.

Another excellent feature of this new TTR is the ability to

measure phase deviation (in minutes or centiradians) of

the transformer primary versus secondary. This will

quickly indicate problems in a transformer such as partial

shorted turns and core faults. This measurement is also

useful in verifying phase errors of all types of PTs and CTs.

The TTR also features special software capabilities. The

TTR comes equipped with sufficient onboard memory to

store up to 200 test results in the field for later retrieval in

the office. Test results 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

readings is also easily done. The system software allows

entry of the transformer alphanumeric serial number,

transformer type and tap information for each test

performed.

This new TTR also comes with a unique optional, remote

control software program. This Windows

based program

permits control and operation from a PC keyboard,

download of test data from the TTR to a PC, print out a

test results report and assist in the preparation of management

and/or analysis reports using either Excel

or Access

Realizing the extreme environments in which the TTR must

operate, special attention has been paid to making it extra

rugged (with a hard, shock resistant case), yet incredibly

light weight (16.5 lbs). It features a high contrast LCD

screen which can be seen in bright or ambient light and

comes equipped with specially designed leads which

provide the necessary flexibility needed in cold weather

conditions.

APPLICATIONS

The proper operation of a transformer relies almost

entirely on the electrical properties of its windings. To

ensure continued proper operation, transformers are tested

to verify that their electrical properties have not changed

from design specifications.

A TTR is an extremely useful instrument for testing

transformer windings, because it can locate several types

of problems within a transformer. It is also ideal to use for

testing in Meter shops for the upcoming inspection of CTs

and PTs. It can determine the no load accuracy of all CTs

and PTs and also determine the need to further test faulty

CTs and PTs.

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Résumé du contenu

Page 1 - Three-Phase TTR

Three-Phase TTR®Transformer Turns Ratio Test Set Fully automatic operation Measures three phases simultaneously Highest ratio measurement (20,000:1);

Page 2

Three-Phase TTR®Transformer Turns Ratio Test SetThe new TTR applies voltage to the high voltage windingof a transformer and accurately measures the re

Page 3

Three-Phase TTR®Transformer Turns Ratio Test SetSPECIFICATIONSInput PowerCat. No. 550503:120 V ac ±10%, single phase, 50 ±2 Hz or 60 ±2 Hz, 100 VACat.

Page 4 - ORDERING INFORMATION

shift, excitation current, test date, test voltage, type oftransformer (single or three-phase), the configuration ofthe high and low voltage windings,

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Atec Megger-550503 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Équipement Atec Megger-550503. Atec Megger-550503 User Manual Manuel d'utilisatio

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