- Stand-alone or remote-control operation - Accurately measures ratio, phase deviation and 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
The TTR300 Series of three-phase transformer turns ratio test sets are designed to measure the 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. Our leads are specially designed to
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
difficult three-phase transformers (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 problems 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 Black box The TTR300 is designed to be completely remote controlled via a PC running PowerDB LITE (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 results into internal memory in an open XML data format via PowerDB LITE - Quickly download test results via RS-232 serial port
TTR310 — text-based LCD interface unit TTR310 This unit features an easy-to-read, high-contrast LCD which can be seen in bright sunlight and provides the user interface for instrument set-up and test operation. The unit comes complete with the software application, PowerDB LITE. The TTR310 has the ability to store test results, upload results to a PC (via RS232 serial port), and/or print them in the field via optional thermal paper printer, without the use of an external computer. Some of the features of the TTR310 consist of: - Fully automatic operation (either stand-alone or remote-control) - Field upgradeable to a TTR330 or TTR320 without compromise to calibration - Built-in RS-232 port and optional thermal spool-paper printer allows for printing of test results, while in the field, and without the use of an external computer - Built-in capability for storing test results into internal memory in an open data format for direct input into Excel® or XML format via PowerDB LITE
TTR320 — graphical ICON based user interface unit TTR320 The TTR320 features a high contrast bright 5.7” full VGA color display can be seen in direct sunlight. The instrument employs a full QWERTY keyboard for entering nameplate-type information. Communications ports are provided in the form of RS-232, USB and Ethernet ports for easy on-board printing, storage, and downloading of test results. Also, with a simple interface to PowerDB LITE PC software application (included), the user can perform data analysis and trending of results. The TTR320 includes the following features: - Fully automatic operation (stand-alone or remote-control) - Field upgradeable to a model TTR330 without compromise to calibration - Graphical User Interface allows for automated setup and control through easy-to-read ICON based screens - Built-in capability for storing test results, in an open XML format, to either internal memory or to an external USB storage device - Built-in RS-232 port and optional thermal spool-paper printer allows for printing of test results, while in the field, and without the use of an external computer - 5.7” VGA bright color display
TTR330 shown testing a pad mount three-phase transformer TTR330 The TTR330 offers a new user interface which allows the operator to interact with the PowerDB ONBOARD software system via full QWERTY and navigation keypads as displayed on an 8.4” VGA bright-color screen. One of the primary benefits of this interface is that it displays the actual test form on the screen. An advanced feature of the TTR330 allows the user to customize these test forms via optional full-version PowerDB. Other primary features of the TTR330 include three communications ports (two USB, one Ethernet). The USB “host” ports can be used for connecting directly to an optional printer (to print full size 8.5” x 11” completed test forms) and for data storage to a USB memory device (for later printing, analysis, archiving, and/or trending). The Ethernet port allows the TTR330 to interface (on a bidirectional basis) directly to a PC.
The TTR330 offers the following: - Fully automatic operation (stand-alone or remotecontrol) with user interface via on-screen customizable test forms - Integrated PowerDB ONBOARD allows for data analysis and trending while in the field without the use of an external computer - Built-in USB port and optional USB printer allows for 8.5”x 11” test forms printing without the use of a laptop - Built-in capability for storing test results, in an open XML format, to either internal memory or to an external USB storage device - Full 8.4” VGA color display
PowerDB LITE™ Acceptance & Maintenance Test Data Management Software All four units in the TTR300 Series come complete, at no extra charge, with PowerDB LITE (a new powerful PC Windows® based software program). PowerDB LITE allows the operator to completely program a test routine, in advance, for a transformer, save it under the transformer ID number, and then recall it in the future as required. Testing on the TTRs can be performed in a remote control manner, via PowerDB LITE. Once testing is complete on all of the instruments, results are easily downloaded to the external PC in an “open” XML data format. The instruments’ internal memory also maintains historical datafiles so that, through interface to PowerDB LITE, current and past results can be archived, compared, analyzed, displayed in trend charts, and compiled into Test Reports.
Control of the TTRs in this remote-control manner offers the following benefits: - Easy to use interface between operator and instrument. - Problems such as PASS/FAIL are flagged visually using a RED highlight. - Easily recall transformer setups from a custom settings menu. - Quickly download results to the PC for completing a transformer test report.