TY - JOUR AU - Lyakhovetskii, G. AB - AID TO MEASUREMENT LABORATORY WORKERS V. L. Erin and G. G. Lyakhovetskii UDC 621.317.7.089.6:006.354 Direct current shunts fabricated according to GOST 8042-78 to 30 A in accuracy classes 0.1-0.5, can be inspected by using the dc potentiomete r apparatus U355. When making an inspection, the external examination, the determination of the electrical strength of the shunt insulation in the housing, the conditions for the inspection and its preparation should cor- respond to GOST 8.337-78. The potentiometer apparatus should be assembled in conformity with the technical documentation, where the coils of the electrical resistance should be of the third category. The actual values of the shunt resistance is determined by the method of comparison with the resistance of astandard measure by using the potentiometer R355. The shunt to be inspect- ed is connected by the current terminals to the "I, mV" terminals, and by the potential ter- minals to the "Ux" terminals of the U355 apparatus. The inspection diagram is shown in Fig. I, where Ro is the standard measure of the resistance, R x is the shunt being inspected, G is the supply source in the loop of the standard measure and the shunt being inspected (a P138 current TI - Method of inspecting dc shunts to 30 A JF - Measurement Techniques DO - 10.1007/BF00834472 DA - 2004-12-01 UR - https://www.deepdyve.com/lp/springer-journals/method-of-inspecting-dc-shunts-to-30-a-12nrCanxQ7 SP - 609 EP - 609 VL - 26 IS - 7 DP - DeepDyve ER -