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TTR310E and TTR330A

Three-phase transformer turns ratio test set

  • Stand-alone or remote-control operation
  • Accurately measures ratio, phase deviation and excitation 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.

Product Documents
Data sheet
Data sheet - TTR300 Series (Portuguese, Brazil)
Data sheet
Data sheet - TTR Series
Data sheet
Data sheet - TTR300 Series (Portuguese, Portugal)
User guide
User guide - TTR300 and 330A
User guide
User guide - TTR310
User guide
User guide - TTR320 (Obsolete)
User guide
User guide - TTR330A
TTR330
TTR PC Quick Manual
TTR-PC-Quick-Manual.pdf
561.7 KB | 30/05/19
TTR330 Quick Manual
TTR-330-Quick-Manual.pdf
442.0 KB | 30/05/19
TTR 330 Firmware Upgrade Instructions
Upgrading-TTR-330-Firmware.pdf
369.7 KB | 30/05/19
Download TTR 330 Firmware Upgrade Installer
TTR330_FW_Upgrade_6-4.Zip
755.7 KB | 30/05/19
TTR 330 Brother PocketJet 6 Install Instructions
BrotherPJ6_Installation.pdf
172.4 KB | 30/05/19
Download TTR 330 Brother PocketJet 6 Installer
UD0001_PKG.zip
846.9 KB | 30/05/19
TTR320
Instructions: Ethernet Interconnect
EthernetInterconnectInst.pdf
270.2 KB | 30/05/19
Instructions: Thumb Drive Update
ThumbUpdateInstructions_1-5.pdf
57.9 KB | 30/05/19
Instructions: TTR320 Update
TTR3xxUpdateInstructions.pdf
76.1 KB | 30/05/19
Update: Firmware only Update (TTR3x0_FW_5.12.0.0.zip)
TTR3x0_FW_5-12-0-0.zip
87.5 KB | 30/05/19
Update: Firmware Only Update MD5 Hash File {TTR3x0_FW_5.12.0.0_MD5.txt}
TTR3x0_FW_5-12-0-0_MD5.txt
181.0 bytes | 30/05/19
Update: TTR3xx Update Instructions 1.6 {TTR3xxUpdateInstructions_1.6.pdf}
TTR3xxUpdateInstructions_1-6.pdf
53.0 KB | 30/05/19
TTR300
TTR PC Quick Manual
TTR-PC-Quick-Manual.pdf
561.7 KB | 30/05/19
TTR 300 Firmware Upgrade Instructions
Upgrading-TTR-300-Firmware.pdf
268.0 KB | 30/05/19
Download TTR 300 Firmware Upgrade Installer
TTR300_310_550503_FW_6-4.Zip
97.2 KB | 30/05/19
TTR310
TTR PC Quick Manual
TTR-PC-Quick-Manual-(1).pdf
561.7 KB | 30/05/19
TTR 310 Color LCD Firmware
Upgrading-TTR-310C-Firmware-Application-Startup.pdf
473.3 KB | 30/05/19
Download TTR 310 Color LCD Firmware
TTR310C_06-19-2014.zip
300.9 KB | 30/05/19
TTR 310 Quick Manual
TTR-310-Quick-Manual.pdf
518.2 KB | 30/05/19
TTR 310 Black & White LCD
Upgrading-TTR-310-Firmware.pdf
282.6 KB | 30/05/19
Download TTR 310 Black & White
TTR300_310_550503_FW_6-4_1.Zip
97.2 KB | 30/05/19
Download TTR 310 Black & White LCD Fix
TTRxDisplay.zip
395.8 KB | 30/05/19