MT-205-20A; is the essential item to be tested in semi-finished product, finished product delivery test, installation, handover test and preventive test by electric power department, and is effective to help find manufacturing defects such as materials selection for transformer coil, welding, looseness on connection, strand breaking, wire breaking and so on, as well as hidden dangers after operation.
MT-205-20A; it is a three-channel DC resistance tester targeting YN junction winding, to meet the requirement of rapid measurement of DC resistance of transformer.
MT-205-20A; the tester can fulfill functions such as simultaneous energization on three phases, independent current sampling, voltage sampling, as well as simultaneous measurement and display of three-phase resistance value and three-phase unbalance rate, thus can significantly reduce test time for DC resistance of transformer, solve the problem of long test duration for DC resistance of each tapped winding of electric power transformer. It requires only 1/3 of the time required by traditional method.
|Output Current||Select Current Automatically (max. 20A)|
|Range Ability||0-100 Ω|
|Minimum Resolution||0.1 μΩ|
|Ambient Humidity||≤80%RH, no condensation|
|Working Power Supply||AC220 V±10%, 50 Hz±1 Hz|
|Volume||L 400 mm*W 340 mm*H 195 mm|
Why Measure Transformer Winding Resistance?
Transformer Winding Resistance Test; is to check the large differences between the windings and the gaps in the connections. Measuring the resistance of the transformer windings ensures that each circuit is properly connected and that all connections are tight. Measuring the resistance of the windings ensures that the connections are correct and the resistance measurement shows that there are no serious mismatches or trips.
What is Transformer Winding Resistance Tester?
It is an important diagnostic tool for assessing potential damage to transformers caused by poor design, poor assembly, abuse, unsuitable environments, overloading or inadequate maintenance. Winding resistance in transformers will change due to short circuits, loose connections or broken contacts in tap changers. Regardless of configuration, resistance measurements are normally done phase-to-phase and the readings are compared with each other to determine if they are acceptable.