Rugged and lightweight instruments the Raytech TR-SPY Mark II Three Phase TTR (Transformer Turns Ratio) and Raytech TR-Mark III Three Phase TTR (Transformer Turns Ratio) automatically measure…
Detecting high resistance connections in and between electrical circuits such as bonding and contact resistance can be quick and easy with a low resistance ohmmeter. The digital microhmmeter will enable users to identify high resistance electrical connections and perhaps avoid the undesirable consequences that they could lead to, if left undetected.
Transformer winding resistance can help you determine the condition of transformers. When a transformer develops defects like coil to core or coil to coil shorts, opens and corroded connectors, the resistance of the windings change. It is a good idea to regularly test transformer components because a defect can cause severe power losses, electrical instability and eventual failure.
A contact resistance test (also known as a ductor test) measures the resistance of electrical connections such as joints, terminations and connectors. These can be connections between any two conductors, for instance busbar sections or cable connections. The test measures the resistance at the micro- or milli-ohm level and is used primarily to verify that electrical connections are made properly, and can detect the following problems:
When it comes to testing transformers and rotating machine windings, the Raytech WR14 15 Amp Winding Resistance Meter performs low-current resistance measurements on connections, contacts and control circuits.
The WR14 is a battery or line-operated, field-portable instrument designed specifically to securely and precisely measure the DC resistance of all types of magnetic windings.
Transformers are simple devices in concept, with two coils of insulated wire wound in close proximity on an iron core (windings). One wire (primary) is connected to a power source, such as the utility or a generator. The other wire (secondary) provides power, “transformed” in some way, to the load. Energy transfer from one wire to the other is through magnetic induction.
Raytech instruments are used for maintenance and acceptance testing of electrical high voltage apparatus. Their unique design approach of engineering has resulted in the development of highly regarded measuring instruments.
The Raytech CT-T1 is a microprocessor-based Current Transformer Tester that measures CT excitation current, ratio, and winding polarity tests, all without having to switch the leads during testing.This CT Tester is precision-made, fully automatic, portable, and built to stand up to the harsh environments of field testing.