2 measurement of loop and psc/pfc – KYORITSU 6016 User Manual

Page 37

9.3.2 Measurement of LOOP and PSC/PFC
a. Measurement at Mains Socket Outlet
Connect the mains test lead to the instrument. Insert the moulded plug of mains test

lead into the socket to be tested. (see Fig.31)

Press MODE Switch (F1) and select L-N or PSC to measure between Line – Neutral,

or L-PE or PFC to measure between Line-PE.

Carry out the initial checks
Press the test button. A beep will sound as the test is conducted and the value of loop

impedance will be displayed.

b. Measurement at the distribution board
Connect the distribution board lead Model7188 to the instrument.
Measurement of Line – Earth Loop Impedance and PFC
Press the Mode Switch (F1) and select L-PE or PFC.
Connect the green PE lead of the Model7188 to the earth, the blue N lead to the

neutral of the distribution board and the brown L lead to one ‘line’ of the distribution
board. (See Fig.32)

Measurement of Line – Neutral Loop Impedance and PSC
Press the Mode Switch (F1) and select L-N/L-L or PSC.
Connect the blue N lead of the Model7188 to the neutral of the distribution board, the

brown L lead to one line of the distribution board. (See Fig.33)

Carry out the initial checks
Press the test button. A beep will sound as the test is conducted and the value of loop

impedance will be displayed. When disconnecting from the distribution board, it is
good practice to disconnect the line first.

c. Measurement between LINE-LINE
Connect the distribution board lead Model7188 to the instrument.
Press the Mode Switch(F1) and select L-N/L-L or PSC.
Connect the blue N lead of the Model7188 to the line of the distribution board, the

brown L lead to another line of the distribution board. (See Fig.34)

Carry out the initial checks
Press the test button. A beep will sound as the test is conducted and the value of loop

impedance will be displayed.

●

If the display shows '>' then this usually means the value measured exceeds the

range.

●

ATT mode enables a measurement without tripping the RCDs with the rated residual

current of 30mA or more.