TRANSFORMER TEST EQUIPMENT
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CTER-91
Current Transformer Excitation, Ratio and Polarity Test Set

• Tests CTs mounted in transformers
  or switchgear
• Tests without changing leads


With Model CTER-91 current transformers can be tested while mounted in transformers, oil circuit breakers breakers or switchgear - without moving bushings and CTs. Using the voltage-comparison method, Model CTER-91 provides a variable-voltage output up to 1000 volts and precision instrumentation for testing single and multi-ratio CTs.


MCTT-10
Current Transformer Tester

• Performs saturation and ratio tests on CTs using the voltage-comparison method
• Tests bushing CTs mounted inside transformers or switchgear
• Eliminates the need for large Primary Injection Test Systems to test CT saturation and ratio
• Saturation and ratio tests performed without changing test lead connections
• Overload and short-circuit protection

MCTT-10 provides a variable voltage output and digital instrumentation for measuring the excitation voltage and excitation current, that results as the voltage applied to the CT under test is increased. As the CT under test begins to saturate, a large increase in current will be detected for a small increase in voltage.

Megger TTR100
Hand-held Transformer Tester

• Tests turns ratio, phase
 displacement, excitation current,
 vector group, winding resistance and polarity
• Fully automatic; fast; easy-to-use;
  handheld; robust; lightweight
• Battery powered with power-saving
  and shutdown function
• Alphanumeric keyboard
• RS232 for data transfer and printing
• Stores 200 test results and 100
  user-defined transformer test settings


The latest TTR available from Megger is the TTR100, a handheld, robust, lightweight and battery operated instrument. This TTR will complement several existing Megger transformer test products and will offer functions, such as winding resistance and polarity. These functions, as well as the phase angle measurement function, can be switched off when not required.
With a turn ratio of 20,000:1, the TTR100 offers the highest turns ratio accuracy in the industry of 0.1%. The TTR100 features special software capabilities.


PowerDB
Acceptance and Maintenance
Test Data Management Software

• 160+ industry standard test forms
  are provided
• Data trending for predictive failure analysis
• Built-in information processing:
  equation calculations, temperature
 correction factors and charting
• Create new forms or customize our forms
• One-Step generation of test
  documentation package
• Import data from other sources
• Test instrument control and data acquisition

The Megger PowerDB is a powerful software package providing data management for each of your acceptance and maintenance testing jobs.


Single Phase, Hand-Cranked TTR
Transformer Turns Ratio Test Set

• Used for testing single phase power
  and distribution transformers
• Design based on precision bridge
  measuring technique
• Unmatched accuracy (±0.1%) in a
  portable design


The Single Phase TTR, Transformer Turns Ratio Test Set, measures the turns ratio and exciting current of windings in power, potential and current transformers. Deviations in turns ratio readings indicate problems in one or both windings or the magnetic core circuit.

Three-Phase TTR
Three-Phase Transformer Turns Ratio Test Set

• Fully automatic operation
• Measures three phases simultaneously
• Highest ratio measurement
  (45,000:1); highest accuracy (0.1%)
• Built-in storage and downloading capabilities
• Measures ALL power transformers, PT's
  and CT's
• Displays % error vs. name plate and
  pass/fail limits
• Operator choice of "quick" test or
  complete "full" test
• CE certified

Transformer Ohmmeter
Transformer Winding Resistance and Tap-changer Test Set

• Dual independent channels for
  simultaneous measurements on two windings
• Built-in safety discharge and shut-down feature
• Tests operation of on-load tap-changers


This lightweight, field portable unit safely and accurately measures the DC winding resistance of all types of transformers and rotating machines. A built-in circuitry safely discharges the specimen when the test is completed, if load accidentally disconnected or if line power is lost.