320731絕緣電阻測試儀，500V100M歐姆，帶箱子

Yokogawa 320731 and 320732 Insulation Polytester
Five measurement In One- Insulation resistance Earth Resistance Earth Voltage AC Voltage Ac Current 
Simple operation 
Direct Reading 
Battery Conservation 
The Yokogawa 320731 and 320732 is a transistorized multifunctional field tester having a precision movement with taut-bａnd suspension. Insulation tester auto earth tester AC ammeter and AC voltmeter functions are all combined in this instrument making it ideal for all-round nt maintenance. 
Specifications Details
Measuring Range Insulation Resistance 500V/100MΩ (320731) 250V/50MΩ (320732)
Earth Resistance 0 to 15/150/1500Ω
Earth Voltage 0 to 30V AC
AC Current 70 to 130/140 to 260/ 280 to 520V AC
AC Voltage 0 to 15/30/75/150/300A AC
Accuracy Insulation Resistance ±5% of indicated value within effective measuring range except zero and rated value
±10% of rated value for rated resistance ± 0.7% of scale length at zero and infinity
Earth Resistance ±3% of full scale
Earth Voltage
AC Current ±1.5% of full scale
AC Voltage ±2.5% of full scale
Ambient Temperature Influence Insulation Resistance ±5% of indicated value at the Central Scale Mark for temperature change of 20±20°C
±5% of Scale length at Zero and Infinity
Earth Resistance ±5% of Full Mark for temperature change of 20±20°C
AC Current ±2.5% of full scale for temperature Change of 20±10°C
AC Voltage ±1.5% of full scale for temperature Change of 20±10°C
Scale Insulation Resistance Three-Digit Logarithmic (black)
Earth Resistance Uniform (blue)
Earth Voltage
AC Current Uniform (red)
AC Voltage Uniform (black)
Dimensions (Carrying case) Instrument Only Approx. 120 × 185 × 124mm (4.75"x7.25"x4.8125")
Weight Approx 1.6kg (3.5 lbs)
Power Source Eight 1.5V batteries (IEC R6P ANSI AA Mignon 1.5V or equivalent)

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