SH115B Insulating Oil Dielectric Loss Resistivity Tester Liquid Insulating Medium Performance The SH115B is an all‑in‑one high‑precision tester designed to measure the dielectric loss angle and volume resistivity of transformer insulating oil and other liquid insulating materials. Its internal integration consists of a dielectric‑loss test oil cell, temperature control module, temperature sensor, loss‑measuring bridge, AC test power supply, reference standard capacitor, high
