METREL MD 1100-LCD Instructions D'utilisation page 5

MD 1100-LCD
5.) "Data Hold" function:
Press the "Data Hold" button to save the LCD screen reading to memory. The "Data
Hold" function, which is indicated by a red LED in the display field, can be toggled by
repeated pressing of the same button.
6.) Phase testing:
Bring one of the probe tips into contact with a conductor, while touching the finger
contact located at the back. When a phase of 100 V~ min. is connected, the small LCD
screen indicates "L1".
7.) Rotating field testing:
Identify a phase conducting wire as described in point 6. Now connect two phase
conductors to the probe tips and touch the finger contact. If the phase connected to
probe tip L2 follows the phase connected to probe tip L1, the phase sequence is right-
handed. The small display indicates "L1". If this is not the case, there is a left-handed
field. The voltage indicator should give a reading of approx. 400V. If "L1"appears in the
small LCD screen and the only reading is 230V, only one phase conductor is connected.
8.) Continuity testing:
Bring the probe tips into contact with the conductor, fuse, etc. that is being tested. With
resistances of 0-2 kW the resistance reading appears on the display and an acoustic
signal sounds. If the reading is >2kW, the excess indicator "1" appears on the display.
9.) FI/RCD trigger test, PE (zero conductor test):
The MD 1100-LCD Profi er LCD is equipped with an automatic load, which permits the
throughput testing of FI/RCD-safety switches without triggering. The initial task is to
carry out testing between L (phase conductor) and N (zero conductor) (approx. 5s).
With immediate connection, L can be tested against PE (earth/ground). The network
voltage is indicated. If this is not so, the FI/RCD safety switch is triggered (max. 30mA).
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