Resistance Measurements (C.a 6523 And C.a 6525); Characteristics; Reference Conditions; Characteristics Per Function - Chauvin Arnoux C.A 6521 Notice De Fonctionnement

5.3. Resistance measurements (C.A 6523 and C.A 6525)

■ Start up the instrument by setting the switch to 400 kΩ.
■ Connect the + and - leads to the measurement points.
■ The user can control the backlighting as required by press-
ing the key .
■ Note the resistance value displayed (see § 3.3).
On the C.A 6523 and C.A 6525, an alarm threshold can be
activated using the ALARM key (see § 4.5).

6. CHARACTERISTICS

The instrument displays a measurement every 400 ms, which
corresponds to 2.5 measurements per second for the digital
display. The bargraph is refreshed every 100 ms. The digital
measurement is smoothed, while the bargraph always indicates
the instantaneous measurement.

6.1. Reference conditions

Influence quantities
Temperature
Relative humidity
Supply voltage
Capacity in parallel on resistance
Electrical field
Magnetic field

6.2. Characteristics per function

6.2.1. Voltage detection
This voltage detection is automatic before and after the insulation
measurements have been performed.
Indicating range: 0...600 V AC/DC

6.2.2. Insulation

Measurement range :
■ C.A 6521 : at 250 V
at 500 V
■ C.A 6523 : at 500 V
at 1000 V
■ C.A 6525 : at 250 V
at 500 V
at 1000 V
Reference conditions
23 °C ± 3 K
45 to 55 % RH
8 V ± 0.2 V
nil
nil
< 40 A/m
50 kΩ to 2 GΩ
100 kΩ to 2 GΩ
100 kΩ to 2 GΩ
200 kΩ to 2 GΩ
50 kΩ to 2 GΩ
100 kΩ to 2 GΩ
200 kΩ to 2 GΩ
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