TTRM Series

Transformer Turns Ratio Meter

SCOPE’s Single Phase (TTRM 101 / TTRM 102) and Three Phase (TTRM 301 / TTRM 302), Transformer Turns Ratio Meters are rugged yet light weight and highly reliable instruments to measure turns ratio of transformers in live switchyards up to 765kV.TTRM is equally suitable for use on manufacturing shop floor and test laboratories. It can be used for testing of single / three phase power transformers (star or delta connected, with or without neutral), CTs and PTs.
  • Measures Turns Ratio, Excitation Current and Phase Deviation between HV and LV windings of three phase and single phase transformers
  • Automatic Vector Group Detection of three phase transformers*
  • Automatic Tap Position indication
  • 7” colour TFT display with touch screen and interactive menu makes it easy to use
  • In-built memory and thermal printer is Displays, prints and stores test reports in the form of text header and tabulated test results
  • In-built real time clock facilitates test time stamping on each record enabling time references for future
  • Ethernet port to communicate with laptop / computer
  • USB interface for connecting pen drive for quick data backup at any location
  • Powerful Windows based software, ‘CTrans TTRM’ offers creation of Transformer identity and upload it to the Field test results are automatically stored under selected ID. Test results it can be downloaded from instrument to computer for viewing, storage and analysis. Test report can also be generated
  • Housed in ultra-rugged IP 67 class molded carrying case for enhanced transport-worthiness
  • The instrument is supplied with Test Lead Set suitable for testing EHV transformers
  • Type Tested as per IEC 60068-2, IEC 61326-1, IEC 61010-1, CE

SCOPE also offers other basic models namely TTRM 101 and TTRM 301.

Note : *- Feature available only in TTRM 302

TECHNICAL DATA

Full Product Specifications

ParametersTTRM 101TTRM 102TTRM 301TTRM 302
ConfigurationSingle PhaseSingle PhaseThree PhaseThree Phase
Excitation Voltage10V, 40V and 100V
Turns Ratio Range0.8 to 20000
Turns Ratio Accuracy & ResolutionBest Accuracy: Value ± 0.03% ± Resolution @ 100V ; Resolution: 5 digits
Excitation Current Range–Up to 2A–Up to 2A
Excitation Current Accuracy & Resolution 

–

Accuracy: Value ± 1mA ± resolution

Resolution: 1mA

 

–

Accuracy: Value ± 1mA ± resolution

Resolution: 1mA

Phase Deviation Range–± 180 Degrees–± 180 Degrees
Phase Deviation Accuracy & Reso-lution 

–

Accuracy: ±0.05°±

resolution

Resolution: 0.05°

 

–

Accuracy: ±0.05°±

resolution

Resolution: 0.05°

Automatic Vector Group Detection–––Yes
OLTC ControlYes
Memory100 transformer IDs, 1000 records each
CommunicationEthernet, USB
Power110 V/230V AC ± 15%, 50/60 Hz ± 10%, 75VA
Dimensions435 X 315 X 175 mm
Weight10 kg

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