Chauvin Arnoux C.A 6116, Руководство пользователя

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3.14. CoMPEnsAtIon foR tHE REsIstAnCE of tHE MEAsUREMEnt lEADs
Compensation for the resistance of the measurement leads serves to neutralize their values and obtain a more accurate meas-
urement when the resistance to be measured is low. The cords are already compensated in the plant, but if you use cords other
than those provided, you can perform a new compensation.
The device measures the resistance of the accessories (leads, probe tips, alligator clips, etc.) and subtracts this value from the
measurements before displaying them.
Compensation for the resistance of the measurement leads is possible in continuity, 3P earth, and loop tests. It is different for
each of these functions. It must be renewed at each change of accessories.
Press the key or the then the key to enter the function.
3.14.1. In ContInUIty
R
∆
:
0 . 0 5 2
Ω
R ∆ E :
0 . 1 2 7 Ω
R
∆
N :
0 . 1 0 5
Ω
R
∆
L :
0 . 1 1 4
Ω
R ∆ :
0 . 7 5 0 Ω
The current value of the compensation is displayed at top right. A value of
zero indicates that no compensation has been determined.
Connect the two leads that you are going to use for the measurement to
the
W
and COM terminals, short-circuit them, then press the TEST key.
The device measures the resistance of the leads and displays it. Press OK
to use this value or to keep the old value.
The
R
∆
0
, symbol, present on the bottom strip of the display unit, reminds
you that the resistance of the leads is compensated.
3.14.2. In 3P EARtH
The current value of the compensation is displayed at top right. A value of
zero indicates that no compensation has been determined.
Connect the lead that you are going to use to connect the E terminal to the
earth between the H and E terminals, then press the TEST key.
The device measures the lead and displays its value. Press OK to use this
value or to keep the old value.
The
R
∆
0
, symbol, present on the bottom strip of the display unit, reminds
you that the resistance of the leads is compensated..
3.14.3. In looP (Z
s
oR Z
i
)
The current values of the compensations are displayed at top right. If the
values are zero, no compensation has been determined.
Connect the three leads that you are going to use for the measurement to
the L, N, and PE terminals, short-circuit them, then press the TEST key.
The device measures each of the three leads and displays their values.
Press OK to use this value or to keep the old values.
The
R
∆
0
, symbol, present on the bottom strip of the display unit, reminds
you that the resistance of the leads is compensated.