HT instruments EQUITEST5071 - Manual (Page 16)

EQUITEST 5071
EN - 14
6.2. LOW
10A:
CONTINUITY OF PROTECTIVE CONDUCTORS WITH 10A
Measurement is carried out in compliance with standards IEC/EN60439-1.
Measurement is carried out by voltammetric method with 4 wires. Therefore, the calculated
value is not influenced by the value of resistance of the measuring cables, so it is not
necessary to carry out any preventive calibration of the cables used for measuring (unlike
with function LOW
).
CAUTION
 Before carrying out the continuity test, make sure there is no voltage at the
ends of the conductor to be analyzed.
 Measurement may be influenced by parallel impedance of additional
circuits or by transient currents. Make sure none of these parasite
elements is present before measuring and always keep test cables
outstretched in order to prevent “coil effects”.
CAUTION
The instrument performs the test with a current
 10A only if resistance is
lower than approx. 0.45
.
6.2.1. Measuring
1. Turn the rotary switch to LOW
10A. The following screen appears on the display:
LOW
 10A 30.11.12
----- 
----A
RLIM: 0.100

 
2. Use the F3 and F4 keys to set the maximum limit threshold RLIM for measurement in
range 0.001
  0.999. Keep the function keys pressed for a quick setting of the
desired value
3. Supply the instrument by connecting it to the 230V/50Hz electric mains (see Fig. 2 –
position 2) by means of the cable provided.
4. Connect the connectors of the measuring cables C7000 provided to the instrument’s
input terminals B1 (Black), B2 (Red), B3 (Red), B4 (Black) and the alligator clips to the
item to be tested as indicated in Fig. 5