The High Voltage Schering bridge one in every of the most normally used AC bridge. The Schering bridge works on the principle of Equal the load on its arm.
Fig. 1 shows a high voltage Schering bridge where the specimen has been represented by a parallel combination of Rp and Cp.
Let, C1 – capacitor Which capacitance is to be determined, r1 – a series of resistance, Indicate the loss of the capacitor C1. C2 – a standard capacitor R3 – a non-inductive resistance C4 – a variable capacitor. R4 – a variable non-inductive resistance
At balance condition Z1/Z2 = Z3/Z4 Z1Z4 = Z2Z3
Applications of High Voltage Schering Bridge
Applications of High Voltage Schering Bridge Is capacity and dielectric, loss measurement of all kinds of capacitances, for instance, cables, insulators, and liquid insulating materials.
Why High Voltage Schering bridge is used for measurement of small capacitance
High Voltage Schering bridge is suitable for measurement of small capacitance equipment. as the bridge uses either high voltage or high-frequency provide. If measurements for such low capacity equipment is carried out at low voltage, the results so obtained are not accurate.