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SAFETY INFORMATION DIGITAL INSULATION TESTER Read the following safety information carefully before INSTRUCTION MANUAL attempting to operate or service the meter. To avoid damages to the instrument do not apply the signals which exceed the maximum limits shown in the technical specifications tables.
Safety symbols: Display: Large LCD with dual display Measurement Range: 200Ω, 200kΩ, 200MΩ/100V, Caution refer to this manual before using the meter. 200MΩ/100V, 2000MΩ/100V, 750V/ACV, 1000V/DCV. Dangerous voltages. Sampling Rate: 2.5 times per second. Zero Adjustment: Automatic adjustment. Meter is protected throughout by double insulation or Over Range Indicator: Number 1 of highest digit is reinforced insulation.
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1-2 Electrical Specifications AC Voltage (40Hz~400Hz) Accuracies are specified in the way: Range Resolution Accuracy Input Overload ±(…% of reading +…digits) at 23ºC±5ºC,below 80% RH. Impedance Protection 750V +(1.2%+10) 10MΩ 750Vrms OHMS Range Resolution Accuracy Max. open Overload Meg OHMS Circuit Protection Range...
2. PARTS & CONTROLS 3. BATTERY REPLACEMENT 3-1 How to connect test leads. a). On MΩ Range: Connect the red test lead into the “VΩ” terminal and the black lead into the “COM” terminal. b) On 200Ω and ACV Range: Connect the red test lead into the “VΩ”...
displayed the insulation resistance. Section VII indicated Many normal components of an installation are likely to that subdivision of large installations might be necessary be damaged if tested at 100V. Examples are power factor because of the large number of parallel insulation correction capacitors, low voltage mineral insulated resistance.
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d). Read the voltage value on LCD. commutator and separately test the armature, field coils and 7. POWER TOOLS AND AMALL brush rigging by connecting one megohmmeter lead to each APPLIANCES of them individually, leaving the other connected to the grounded motor housing.
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CABLES Disconnect the cable from the line. Also disconnect opposite end to avoid errors due to leakage from other equipment. Check each conductor to ground and /or lead sheath by connecting one megohmmeter lead to a ground and /or lead sheather and the other megohmmeter lead to each of the conductors in turn.