Chauvin Arnoux C.A 6115N, Руководство пользователя

Страница: 12 / 56

12
Extensions in V2.4:
E05 - EEPROM check-sum - printer data
E15 - EEPROM check-sum - rotary switch calibration data
E25 - EEPROM check-sum - measurement calibration data
E35 - EEPROM check-sum - instrument number
Extensions in V2.7:
E09 – shows the number of a faulty relay if test fails in the right upper display corner
Extensions in V2.8:
E45 – EEPROM – wrong contents for constants for measurement
These error messages help to find the right diagnosis for repair. In any case, it is necessary to send the
instrument to an authorised service center.
5. MEASUREMENTS
5.1 Checking phase position with the mains plug
This function is useful for quickly identifying the conductor with more than 20 Volt detected at the PE
input (phase) in mains sockets, thus avoiding the use of the traditional test lamp. The test lead with the
mains plug on it should be used for this. A non connected neutral wire is also indicated.
5.1.1 Description of the function
The voltage of “L” and “N” conductors is measured in relation to the “PE” conductor (ground). The highest
voltage (> 20 V) is designated as a phase and indicated by the L in the "
L L
" symbol shown on the
instrument’s LCD screen. This position indication is made in relation to the marking situated on the
mains plug (white point). If both “L” segments are indicated you, the voltage indications make it possible
to identify the problem. If the voltages L-PE and N-PE show the same mains voltage e.g. 230 V, the N
wire is poorly connected to phase. If the voltage N-PE shows half of the mains voltage e.g. 115 V, then
the N wire is not connected.
WARNING: It cannot be assumed that contact with the conductor that is not designated by “L” is safe.
The instrument only indicates the highest voltage in relation to the PE!
If using the measurement cable with 3 separate leads, make sure that the PE lead (white)
is correctly connected to the network.
5.1.2 Technical specifications
Voltage rating
: 20 - 300 V; 15.3 ... 420 Hz
Internal resistance : Approx. 400 k
Ω
Maximum overload : V
rms
max. = 500 V
5.1.3 Performing a measurement
1. Connect the C.A 6115N to the installation, as
illustrated.
2. Select any position with the switch
Check that the white point on the mains plug
can be seen from above.
3. Meaning of the different indications displayed:
L
= the highest voltage in relation to the earth
(PE) is on the left-hand pin of the mains
plug
L1
L2
L3
N
PE