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Item number
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M525B
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M525A
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Product details page
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Details
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Details
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Indication
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Digital
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Digital
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Limit value indication
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Status display of internal memory
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Measurement functions selectable via rotary switch
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x
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x
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Structured measured value memory
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Editable menus
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Name of inspector editable at test instrument
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Creation of test procedures
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Help function with connection diagrams
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Bluetooth interface
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Interface
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x
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x
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Bidirectional data exchange
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Updateable
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x
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x
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PE detection by means of finger contact
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Automatic measurement cable compensation
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Offset management
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Connection for test probe with remote triggering
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Remote control for testing device
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Measurement category
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CAT III 300 V
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CAT III 300 V
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Phase sequence determination
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x
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x
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Low resistance measurement with ramp function
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Isolation resistance measurement
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Isolation resistance measurement with ramp function
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Resistances of isolating floors and walls
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Over voltage protector testing
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Measurement of standing-surface insulation
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Loop resistance/impedance measurement
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Loop measurement without RCD/FI release
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x
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x
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Detection short-circuit current/overcurrent protection
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x
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x
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Mains internal resistance measurement
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Voltage drop measurement
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Earthing measurement
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Selective grounding measurement
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Earth loop measurement
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Specific grounding measurement
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RCD/FI testing
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x
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x
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RCD/FI testing with rising residual current
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RCD tripping test with nominal residual current
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RCD/FI analysis function
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x
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x
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Curve shape at RCD/FI testing
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For earth leakage switch type A, F
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For earth leakage switch type A, F
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RCD tripping test with nominal residual current and simultaneously rising residual current
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PRCD testing type S, type K
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Testing of motor protection switch
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Testing of IMDs and RCMs
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Testing of charging devices E-Mobility, simulation of vehicle status
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x
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x
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Measuring of leakage currents with adapter
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Measurement of touch current
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Measurement of residual voltage
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Connection of barcode or RFID reader
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Connection for current clamp sensors
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Connection of temperature and humidity sensor
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Connection of earth spikes
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