A top-of-line measuring instrument, portable, in a rugged constructionsite
housing with cover, with a graphic screen, operating from battery or line power (48 pages)
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Thank you for purchasing a C.A. 6505 megohmmeter. To obtain the best service from your instrument: ■ read this user manual carefully, ■ comply with the precautions for use. WARNING, risk of DANGER! The operator must refer to this user’s manual whenever this danger symbol appears. Equipment protected by double insulation.
1. FIRST-TIME USE 1.1. DELIVERY CONDITION ① One carrying bag. Two high-voltage safety cables, one red and one blue, 3m long, with a high-voltage plug at one end and a crocodile clip ② at the other.
1.4. BATTERY CHARGE Before first using, start by fully charging the battery. Charging must be done at between 20 and 30°C. > 110 Vac < 240 Vac 50 / 60 Hz Connect the instrument to line power using the power cord. Charging takes between 6 and 10 hours, depending on the battery’s initial charge.
2.1. FUNCTIONS OF THE INSTRUMENT The C.A 6505 megohmmeter is a portable instrument housed in a rugged field case with lid and operates on either battery or line power. It makes voltage, insulation, and capacitance measurements. This instrument contributes to the safety of electrical installations and equipment. It has many advantages, for example: ■...
2.4. DISPLAY min sec µA µF 2.4.1. DIGITAL DISPLAY The main digital display indicates the values for insulation measurement: resistance, DAR PI, DD or capacity. The small digital display unit indicates the test voltage applied by the instrument or the voltage measured on the object tested. During the insulation measurement, it indicates the elapsed time or the test voltage.
3. MEASUREMENT FUNCTIONS 3.1. VOLTAGE MEASUREMENT As soon as the switch is set to an insulation measurement position, the instrument automatically measures the presence of any AC/DC voltage. This voltage is measured at all times and indicated on the small display unit. The instrument automatically determines AC or DC: the AC measurement is an RMS value If an excessively high external voltage is present on the terminals (>...
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Once the connections have been made, choose the When powered up, the instrument displays the test voltage on the rotary switch. condition of the battery, 1000V 1000V Ω 4T Ω the test voltage, then the voltage present on the object to be tested. Press the START/STOP key to start the measurement.
3.3. MEASUREMENT OF THE PI Set the switch to one of the insulation measurement Start the measurement by a long press on the START/ positions. STOP key. The long press is acknowledged by an audible beep. > 2s 1000V 1000V Ω...
The quality of the insulation is a function of the results found. Condition of the insulation < 1 Inadequate or even < 1.25 dangerous < 2 < 1.6 < 4 Good > 1.6 > 4 Excellent 3.4. ADJUSTMENT OF THE VARIABLE TEST VOLTAGE This function makes it possible to use test voltages other than the 4 available.
The maximum test voltage value is retained in a non-volatile memory. It will be displayed for a few seconds on selection of an affected range. For example, if the maximum voltage is 750 V, it will be applied and displayed on all settings of the switch from 1000 V up. 3.6.
4. COMPLEMENTARY FUNCTIONS 4.1. ADJUSTMENTS OF THE PI It is possible to modify the PI times to meet specific needs. This function is not readily accessible because it is not often used. Reminder: PI = R 10 min / 1 min The first PI time is 1 mn.
4.3. INTERNAL SOFTWARE VERSION To view the internal software version of the instrument, keep the DISPLAY key pressed and turn the switch to the 1000 V position. 1000V 1000V 4T Ω Ω DISPLAY...
5. SPECIFICATIONS 5.1. REFERENCE CONDITIONS Influence quantities Reference values Temperature 23 ± 3°C Relative humidity 45 to 55% RH Supply voltage 9 to 12 V Frequency range DC and 15.3...65 Hz Capacity in parallel on resistor 0 µF Electrical field Magnetic field <...
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■ Accuracy Test voltage 500 V - 1000 V - 2500 V - 5000 V Specified measurement 10 - 999 kΩ Ω 4.00 - 39.99 MΩ Ω 40.0 - 399.9 MΩ Ω 0.400 - 3.999 GΩ Ω range 1.000 - 3.999 MΩ Ω Resolution 1 kΩ...
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■ Typical change curve for test voltages according to load Range 500 V MΩ Ω 0,01 Range 1000 V 1200 1000 MΩ Ω 0,01 Range 2500 V 3000 2500 2000 1500 1000 MΩ Ω 0,01 Range 5000 V 6000 5000 4000 3000 2000...
5.2.4. CAPACITANCE This measurement is made at the end of each insulation measurement, while the circuit is being discharged. Specified measurement range 0.001 - 9.999 µF 10.00 - 49.99 µF Resolution 1 nF 10 nF Accuracy 10% ± 1 pt 5.3.
Diagram of climatic conditions: % RH °C -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 1: Reference range 2: Operating range 3: Storage range (without battery) 5.6. COMPLIANCE WITH INTERNATIONAL STANDARDS ■ Electrical safety as per: IEC/EN 61010-2-030 or BS EN 61010-2-030 and IEC 61557 ■...
■ bAt on the small display unit and chrG flashing on the main display unit means that slow charging is in progress ■ bAt on the small display unit and FULL on the main display unit means that charging is over. The battery must be replaced by Manumesure or by a repairer approved by CHAUVIN ARNOUX. 6.2. REPLACEMENT OF THE FUSE If FUSE -G- appears on the display.
7.WARRANTY Except as otherwise stated, our warranty is valid for 24 months starting from the date on which the equipment was sold. The extract from our General Conditions of Sale is available on our website. www.group.chauvin-arnoux.com/en/general-terms-of-sale The warranty does not apply in the following cases: ■...
8. GLOSSARY This glossary lists the terms and abbreviations used in this document and on the digital display unit of the instrument. Battery charge condition Dielectric Absorption Ratio. DAR = R 1 min / 30 s Maximum test voltage that will be applied during the measurement Polarisation Index.
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FRANCE INTERNATIONAL Chauvin Arnoux Chauvin Arnoux 12-16 rue Sarah Bernhardt Tél : +33 1 44 85 44 38 92600 Asnières-sur-Seine Fax : +33 1 46 27 95 69 Tél : +33 1 44 85 44 85 Our international contacts Fax : +33 1 46 27 73 89 info@chauvin-arnoux.com...
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