Rectifier and Bond Reading Tim Jenkins Basic Electric

Rectifier and Bond Reading Tim Jenkins

Basic Electric - Shunts

Basic Electric - Shunt Formulas • Calculate Current – Given - Shunt (. 01 ohms & voltage across the shunt = 50 Mv) – Convert units of voltage, 50 mv =. 05 v – Calculate current using Ohm’s law • I =. 05 v/. 01 ohms = 5 amps – Given - Shunt ( 15 amps, 50 m. V) • Measured voltage drop = 28 m. V – Determine shunt rating • Rating = 15 amps/50 m. V =. 3 amps / m. V – Calculate current • Current =. 3 amps / m. V x 28 m. V = 8. 4 amps

Slide Resister Application

Resister Wire Application The amount of Resistance is made by the Length of the Wire.

Disconnect Bond Wire for

1. 36 Amp Current Drain Amp Drain Reading Make Connection in series with the Circuit

Slide Resister Lighting

Connection Made on Resister from Foreign Structure and Columbia.

Disconnection to get Amp Drain must be made in serie with the circuit.

Direct Bond Connection, No Resistance

Shunt Resister

Measuring Amp Drain by Measuring Voltage Drop Across the Shunt. Ratio is normally found on Shunt. . 001 V = 1 A

7 milivolts = 7 Amps Make connection across Shunt. Polarity does not matter.

Ratio for Shunts do not have to be disconnected in BI-monthly an

Alternative method – use shunt for amp readings. Take mili-volt reading across shunt then use ratio to figure total amps. Connect meter in serious for amp reading on the structure or anode wire.