CHAUVIN ARNOUX C.A 6533 (01) PDF Document

Comply with the conditions for use: temperature, humidity, altitude, degree of pollution and place of use.

This instrument can be used on category-III installations for voltages not exceeding 600 V in relation to the earth. Category III meets severe reliability and availability requirements, corresponding to permanent use on fixed industrial installations (see IEC 1010-1 + A2).

Use connection accessories that comply with the applicable IEC safety standards, with a minimum voltage and voltage surge category at least equal to those that you use for your measurements.

Respect the value and type of the fuse to avoid damaging the instrument and cancelling the warranty.

Set the switch to OFF when the instrument is not in use.

Do not perform any insulation or resistance measurements when the presence of a voltage is indicated.

Check that none of the terminals is connected and that the switch is set to OFF before opening the instrument.

Triangle with Exclamation Point: Warning! Please refer to the User’s Manual before using the instrument. In the User’s Manual, the instructions preceded by this symbol, should they not be carried out as shown, can result in a physical accident or damage the instrument and the installations.

Square within a Square: This device is protected by a double insulation or by a reinforced insulation. No linking is required from the protection earth terminal to ensure the electrical security.

Triangle with Lightning Bolt: Warning! Risk of electric shock. The voltage of the parts marked with this symbol may be dangerous. For safety reasons, this symbol will light up on the LCD screen as soon as a voltage is generated.

ALARM: Threshold active or threshold programming in progress

>: Upper threshold

<: Lower threshold

Lightning Bolt Symbol: Dangerous voltage generated (only comes on if test at 50 V)

> 25 V: Voltage > 25 V present on the instrument’s terminals

DREL: Difference between actual measurement and measurement in memory (does not function for voltage on the MW positions)

Speaker Symbol: Buzzer active

P: Constant operation (no automatic shutdown)

– + Battery Symbol: Batteries flat

Right Arrow (Bargraph): Insulation > 1.1 GW

Left Arrow (Bargraph): Insulation < 70 kW

BAT: Batteries low – must be changed

OL: Range exceeded

– – -: Insulation < 10 kW at 50 V, < 20 kW at 100 V, < 50 kW at 250 V, < 100 kW at 500 V

Yellow key: When this yellow key is pressed, a high voltage is generated for insulation testing. However, if a voltage greater than 25 V has been detected, no insulation testing is allowed and the key becomes inactive. The instrument remains in voltage measurement mode.

ALARM key: The ALARM key can be used to activate/deactivate the alarm thresholds during insulation and resistance measurements. When associated with the arrow keys, it can be used to program the values of these thresholds.

Right Arrow Key: This key can be used to program the alarm thresholds (with the ALARM key). By pressing the key, you can make elements flash successively (measurement unit digit, thousands digit, hundreds digit, tens digit, units digit, decimal separators, type of threshold).

Up Arrow Key: When programming the alarm thresholds, the key can be used to scroll through all the possible values of the flashing elements and then loop back to the beginning.

Backlight Key (Sun Symbol): When this key is pressed, the backlighting of the display comes on. It will be turned off automatically one minute later. When it is lit, you can turn the backlighting off by pressing this key again.

DREL key: A long press on this key enables you to memorize a value. The measurements that follow will be the positive or negative deviation compared with the value memorized (does not function for voltage on the MW positions).

1. Start up the instrument by setting the switch to the MW position which will provide the required voltage.

2. Connect the lead from the “+” terminal to the cold point and the lead of the “-” terminal or the remote control probe to the hot point.

3. The instrument first measures the AC / DC voltage present between its terminals. If there is no voltage > 25 V, proceed to the next step.

4. Press the yellow key, keeping it pressed down until the measurement is displayed.

5. Note the value displayed.

6. When measurement has ended, release the yellow key and wait for the installation tested to discharge (voltage < 25 V) before disconnecting the leads.

Note: If the voltage is greater than 25 V, ” > 25 V ” is displayed. Pressing the yellow key does not trigger insulation measurement, but causes a series of buzzes and makes the lightning bolt symbol flash until the yellow key is released.

1. Start up the instrument by setting the switch to 400 kW.

2. Connect the + and – leads to the measurement points.

3. Note the resistance value displayed.

The instrument indicates if the value measured is outside its measurement range. If the resistance is greater than 400 kW, the OL symbol is displayed on the digital measurement display.

After 5 minutes without any activity by the user on the instrument (key press on the keyboard or on the yellow key on the remote control probe or turn of the rotary switch), the instrument shuts down automatically. It is then on standby.

To start up the instrument again, all you have to do is press one of the keys, turn the switch or press the yellow key on the remote control probe.

To deactivate the automatic shutdown function: Press the backlight button whilst switching on the device with the rotating switch. The P displayed indicates that the device is in continuous use mode. To reactivate the automatic shutdown function, switch the instrument off and then switch it back on again.

1. Select the threshold programming mode by a long press on the ALARM key. The ALARM symbol is displayed and the value of the threshold corresponding to the switch position is indicated.

2. Use the Right Arrow key to select digits or units to flash, and the Up Arrow key to scroll through values.

3. You can quit the programming mode and record the threshold by another long press on the ALARM key.

During this programming, if you change the switch position, you lose what you have just done.

> 0.05 MW for the MW – 50 V position

> 0.10 MW for the MW – 100 V position

> 0.25 MW for the MW – 250 V position

> 0.50 MW for the MW – 500 V position

< 10.00 kW for the 400 kW position

The threshold corresponding to the switch position can be activated by a short press on the ALARM key. The ALARM symbol, the < or > symbol, the programmed value of the threshold and the corresponding unit are then displayed on the digital threshold display.

The threshold can be deactivated by a second short press on the key. The ALARM symbol, the < or > symbol, the programmed value of the threshold and the corresponding unit disappear.

Pressing the DREL key enables you to store the value measured in the memory. The measurements that follow are differences compared with the value in memory. These differences may be positive or negative. The DREL symbol is displayed.

Another press clears the value from the memory and returns the instrument to normal mode.

This key can be used at any time except in voltage mode on the MW positions.

1. Check that none of the terminals is connected and that the switch is set to OFF before opening the battery compartment.

2. The hatch is located on the back of the unit. Open it using a coin or a large screwdriver (1/4-turn captive screw).

3. To avoid errors, the battery symbol on the power-supply board shows the direction in which the 2 x 3 LR6 1.5 V batteries should be mounted.

4. Put the hatch back properly and close it after changing the batteries.

The instrument must be disconnected from any source of electricity. Use a soft cloth slightly moistened with soapy water. Rinse with a wet cloth and dry quickly with a dry cloth or pulsated air. Do not use alcohol, solvents or hydrocarbons.

Measurement range:

at 50 V: 10 kW to 2 GW

at 100 V: 20 kW to 2 GW

at 250 V: 50 kW to 20 GW

at 500 V: 100 kW to 20 GW

Analogue calibre: 70 kW …1.1 GW

Resolution: 8 segments per 10-unit interval

Accuracy: 5 % R ± 1 segment

Digital calibres and accuracy:

Measurement range: 0 to 400 kW

Measurement current: 55 or 550 µA according to the measurement

Voltage at open circuit: 7 V £ Uopen £ 9 V