A precision instrument suitable for calibrating and testing general purpose insulation testers and megohmmeters with test voltages up to 2.5kV.
It is constructed in a high strength co-polymer plastic case and is powered by a rechargeable battery. This ensures full isolation from the mains and prevents stray leakage.
The insulation tester being calibrated can be tested for open circuit voltage and short circuit current. These are displayed on the digital meter mounted on the front panel. Nine selectable precision resistors provide the insulation resistance test. Also fitted are 4 fixed low resistance values for verification of the low ohm ranges and continuity.
Rugged, compact and portable, the 5068 is ideal for site calibration work. Also available is the 5069 InsCal, 10kV version and for additional electrical testing capabilities the 5030 calibrator is an excellent solution.
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Resistance (Insulation)
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10GΩ, 1GΩ, 400MΩ, 250MΩ, 100MΩ, 10MΩ, 1MΩ, 500KΩ, 100KΩ
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Resistance (Low ohm)
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1Ω, 10Ω, 100Ω, 1KΩ
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Resistance accuracy
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Low Ohm = 1%. Insulation resistance: 100KΩ to 1GΩ = 1%, 10GΩ = 5%
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Resistance temperature coefficient
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< 250ppm/°C insulation resistance, < 50ppm/°C low ohm resistance
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Continuity
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Selectable 5Ω
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Open circuit voltage measure
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0 to 2kV range, 0 to 2.5kV range, both ranges 1% of full scale accuracy
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Voltage display
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1.999kV full scale, and 2.50kV full scale
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Voltage temperature coefficient
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< 300ppm/°C
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Short circuit current measure
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0 to 2mA range, 0 to 20mA range, both ranges 1% of full scale accuracy
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Current display
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1.999mA full scale, and 19.99mA full scale
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Current temperature coefficient
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< 450ppm/°C
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Power
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Internal battery, 6V re-chargeable NiCad, >150hrs between charges
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