Chauvin Arnoux CA6549 Megohmmeter

The Chauvin C.A 6549 megohmmeter is a top-of-line measuring instrument, portable, in a rugged construction-site housing with cover, with a graphic screen, operating from battery or line power. The C.A 6549 has an internal memory for storing several thousand measurements. Storage is performed with two indices, OBJ (object) and TEST (test), which store the results in an ordered way. STEP VOLTAGE The resistance of a faulty insulant gradually decreases as the test voltage rises. This test, which involves increasing the test voltage in steps, can be used to assess the quality of the insulant by observing the curve R(Utest) and the result in ppm/V which provides a quantitative evaluation of the curve's slope. REFERENCE TEMPERATURE The value of an insulation resistance varies according to the measurement temperature. For accurate, reliable monitoring, it is always a good idea to express a measurement result in terms of a reference temperature. By simply pressing a button, the calculation can be performed automatically by the instrument. OTHER FEATURES Measurement range: 10 kΩ to 10 TΩ. 4 fixed test voltages. Adjustable test voltage position: 40 to 5,100 V in 10 V or 100 V increments. Large backlit LCD screen with digital display and bargraph. Quantitative insulation analysis: DAR, PI and DD (dielectric discharge) quality ratios calculated automatically and R(t) stored. Large number of functions: programmable test duration, test voltage locking, smooth function, programmable alarms, etc. Power supply: NiMH rechargeable battery for 30 days' operation with 10 DAR measurements and 5 PI measurements per day. Chauvin C.A 6549 Specifications Fixed test voltages 500 V 1000 V 2500 V 5000 V Insulation ranges 10 kΩ to 2 TΩ 10 kΩ to 4 TΩ 10 kΩ to 10 TΩ 10 kΩ to 10 TΩ Adjustable test voltage 40 V to 5,100 V in 10 or 100 V increments. Voltage 1 to 5,100 V (15 Hz to 500 Hz or DC). Capacitance 0.001 to 49.99 F. Leakage current measurement 0.00 - 3mA. Functions Display Graphic. Backlighting Programmable alarms Smoothing of display Prog. test duration Calculation of ratios DAR - PI and DD. Step voltage mode 5 steps. Calc. of R at reference T° Locking of test voltage R(t) Directly on display. Storage 128 Kb. RS 232 Two-way. Printing of measurements Serial or parallel printer. PC software DataView. Power supply Rechargeable NiMH battery. Battery life 30 days with 10 DARs and 5 PIs / day. Electrical safety IEC 61010-1 (Cat. III 1,000 V or Cat. I 2,500 V) and 61557. Dimensions (L x W x H) 270 x 250 x 180 mm. Weight 4.3 kgs. Chauvin C.A6549 warranty 12 months.

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