The Kelvin lug is a robust two-pole measuring contact connecting to connection and winding pins, in particular in the case of transformers, and bolted connections and busbars in power engineering applications. It is designed for practical use under rough conditions. With 2 Kelvin lugs a 4-pole connection can be realised, so that the electric resistance of the test object can be measured with a suitable measuring instrument independent of the supply line resistances.
开尔文凸耳是一种坚固的双极测量接触连接和绕组销，特别是在变压器的情况下，螺栓连接和母线在电力工程中的应用。它是为实际使用而设计的，在粗糙的条件下使用。用2开尔文凸耳可实现四极连接，使测试对象的电阻可以用独立于供电线路电阻的合适的测量仪器进行测量。
Technical Data:
| Front opening width | 50 mm |
| Bolzendurchmesser | 10 mm – 50 mm |
| Required tightening force | > 10 kp (100 N) |
| Contact thickness | 6 mm |
| max. current | 50 A (lug) |
| max. current using standard plug | 20 A |
| Matrix / Handle material | hard brass / shock – resistant plastic |
| Matrix | special designs upon request |
| Dimensions | 270 x 90 x 50 mm (WxHxD) |
| Weight | approx. 500 g without cable |
