In their site-proof casing suitable for the severest measurement conditions, the C.A 6505, C.A 6545, C.A 6547 and C.A 6549 megohmmeters offer you the best in insulation testing in terms of accuracy and expertise. As soon as they are connected, they measure voltages, frequencies, capacitances and residual currents on the installation or equipment to be tested. With their multiple functions, they not only qualify the insulation measured, but also ensure genuine preventive maintenance.