The All New

The Electrom iTIG is a complete portable Surge Tester and Winding Analyzer. In both AC and DC rotating equipment, assembled or disassembled, it finds problems far beyond those that can be found by a hipot tester or megger.

Because of the technology used in the iTIG Surge Tester, it will find insulation weaknesses at a given test voltage where other surge testers will not.

The iTIG Winding Analyzer is a:

The iTIG Surge Testers and Winding Analyzers are used to analyze the condition of insulating systems.

iTIG Surge Testers will detect shorts or weak insulation in:

They can also test for damage in AC rotors with the use of a Rotor Bar Clamp, no other accessories needed.

The iTIG Surge Tester / Winding Analyzer is used for the following purposes:

Why invest in an iTIG Surge Tester / Winding Analyzer?

1. Finds faults or insulation weaknesses where other surge testers do not!

   
   The objective with a surge test is to set up conditions in a coil, motor or other piece of rotating equipment that replicates extreme operating conditions in order to see if the coil/wire insulation meets dielectric requirements. This is done without damaging the motor and within motor specifications. If requirements are not met and the insulation is shorted or weak, a flashover will occur between turns or phases. The conductor for the flashover is ionized air surrounding the windings or coils. The air surrounding the windings is ionized as a result of the oscillating electrical fields.
   To replicate motor operating conditions the Electrom iTIG Surge Tester offers the following:
• Surge test pulses at line frequency, 50/60 Hz. To achieve and maintain ionization similar to motor operating conditions, line frequency surge test pulses are ideal. Many surge testers pulse at lower frequencies such as 5Hz.? Two live surge test channels. Surge testers are often called Surge Comparison Testers because two tests of different coils or windings are compared. Differences in the two tests indicate some type of fault. Many surge testers only have one surge channel. When they do the live surge test is compared to a stored surge test.
• With the iTIG Surge Tester two phases of a 3 phase motor are compared live instead of comparing one live phase test to a stored phase test. Again, this better replicates operating conditions of rotating equipment.
• The two live surge channels set up a voltage gradient between the two phases similar to what happens during operating conditions. Higher voltage gradients mean a greater possibility for flashover between phases with weak insulation compared to a surge test with one live phase.
• With two live channels any random and temporary phase shift between the two phases and any instability between the two waveforms produced by the surge tester will easily be seen. When one waveform in the surge comparison test is a picture, the opportunity to miss faults increase.

• The 50/60Hz pulse rate of the iTIG Surge Tester along with the two live surge channels create a higher level of ionization of the air surrounding the windings and a higher voltage gradient.
• The iTIG Surge Tester therefore replicates operating conditions of the motor to a higher degree than instruments operating at for example 5Hz with one live surge test channel.
• Consequently some faults are easier to see and less likely to be missed, and...
• The Electrom Surge Tester will detect faults other surge testers do not see. It detects them at lower surge test voltages. This means faults occurring around the surge test voltage specified by standards may be detected by the iTIG Surge Tester but not by all other surge testers.

2. Finds faults and weaknesses you cannot detect with a megohm meter or hipot tester

   
   A megohm meter is used to measure the insulation resistance in mega ohms between a conductor (winding) and ground or between conductors of separate circuits. It is used to detect the level of contamination in electric motors, armatures and generators. A megohm test should always be done before any high voltage test is performed such as a hipot test or surge test. Insulation resistance measured by a megohm tester is not a measure of dielectric strength. It is not directly related to dielectric strength and will therefore not predict at which voltage level the insulation will fail. Hipot testers do measure the dielectric strength. They are used to find ground faults or weak insulation to ground. Neither a megohm tester nor a hipot tester can find turn to turn, coil to coil or phase to phase shorts or insulation weaknesses. These common problems are only detected with a surge tester.