Megger TTR300 Bedienungsanleitung

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DESCRIPTION

The TTR300 Series of three-phase transformer turns ratio

test sets aredesigned to measurethe turns ratio of power,

instrument, and distribution transformers in a substation or

manufacturing environment. A rugged and robust design

makes these instruments well suited for use in a variety of

harsh environments. The units come equipped with

specially designed leads which provide the necessary

flexibility needed in cold weather.

The TTR300 Series are ideal for use by power transformer

manufacturers. Their unique testing procedures and

storage capability allows an operator to set up and test

dif

ficult three-phase transfor

mers (with multiple tap

changers and bushing CTs) in a fraction of the time than it

used to take with other TTRs. This test also includes a

pass/fail limit of individual ratios.

The TTR300 Series also measure the phase deviation of the

transformer primary versus secondary. This quickly

indicates pr

oblems in the transformer such as partial

shorted turns and core faults. This measurement is also

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

Each unit comes equipped with a remote-control switch

for single person testing. This allows the operator to test

transformers with LTCs very quickly.

The Series consists of four instruments:

TTR300

The TTR300 is designed to be completely remote

controlled via a PC running PowerDBLITE (included) or

PowerDB(full version) PC software applications. The

TTR300 is field upgradeable to the TTR310, TTR320 or

TTR330.

Some of the features of the TTR300 are:

■Field upgradeable to a model TTR310, TTR320 or

TTR330 without compromise to calibration

■Built-in capability for storing test r

esults into internal

memory in an open XML data for

mat

■Quickly download test results via RS-232 serial port

TTR

®

300 Series

3-Phase Transformer Turns Ratio Test Sets

■

Stand-alone or remote-control operation

■

Accurately measures ratio, phase deviation

a

nd exciting current

■

Field upgradeable without compromise to

calibration

■

Built-in capability for storing and downloading

test results in an XML format, via RS-232,

Ethernet or USB ports (depending on model)

■

Works in the presence of high interference/

high voltage

■

Highest ratio measurement (45,000:1);

highest accuracy (0.1%)

■

Displays % error vs. name plate with pass/fail

limits

TTR

®

300 Series

Three-Phase Transformer Turns Ratio Test Sets

Preliminary

TTR330 shown

TTR300

—

r

emote contr

olled “black box” unit

Produktspezifikationen