AVTMTTR100-ENG Rev 6 Nov 2015
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INTRODUCTION
Receiving Instructions
Check the equipment received against the packing list to ensure that all materials
are present. Notify Megger of any shortage.
Telephone 610-676-8500.
Examine the instrument for damage received in transit. If any damage is
discovered, file a claim with the carrier at once and notify Megger or its nearest
authorized sales representative, giving a detailed description of the damage.
This instrument has been thoroughly tested and inspected to meet rigid
specifications before being shipped. It is ready for use when set up as indicated
in this manual.
General Information
G
CAUTION
Charge battery ONLY when “CHARGE BATTERY” message or low
battery voltage symbol appears on display.
The TTR100 and TTR100-1 Single-Phase Handheld TTR
®
Test Sets are fully
automatic, self-checking, self-calibrating, menu-driven units. The TTR100-1 is a
newer model replacing plastic (on TTR100) with metal connectors on both the
leads and the instrument. The test set measures the turn ratio, phase shift,
excitation current, dc winding resistance and polarity of single and three phase
(phase by phase) distribution transformers, as well as power, potential & current
transformers. The Single-Phase Handheld TTR
®
Test Set is powered by
rechargeable NIMH batteries. The test set is a portable instrument housed in a
sturdy plastic case. A carrying case with strap and an accessory pouch is
provided with the test set.
The test set can be used to test single-phase and three-phase transformers, both
with and without taps in accordance with the requirements of the IEEE C57.12.90
– 2013 standards. For three-phase transformers, the test set is connected to
each of the three phases of the transformer to be tested, and measurements are
made on a phase by phase basis.
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