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True Resistive Leakage Current (I0r) Measurements Model 340 IR
FEATURES Compact size and light weight for convenient field use. High accuracy and resolution (0.001mA for I0 and I0r). Safe phase detection by voltage input cable with fuse protection. Extensional measurements by combination with optional leakage current clamp adaptor.
Explanation of true resistive leakage current(I0r) Generally, the leakage current (I0) includes the capacitive leakage current(I0c) originated in capacitance and the resistive leakage current (I0r) originated in insulation resistance of the power line as below drawing. For accurate leakage current measurements ,it is necessary to measure true resistive leakage current (I0r) excluding capacitive leakage current. (Vector of leakage current) (Connection of voltage input cable)
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SPEC SPECIFICATIONS Measuring function : AC leakage current(I0) AC Resistive leakage current (I0r) Jaw opening capability : 40mm φ Phase detection : By voltage input Measuring ranges : 0～10mA/100mA/1000mA (I0) 0～10mA/100mA (I0r) Input frequency range : 45～65Hz (50 or 60Hz is selectable by switch) A/D conversion : Dual slope integration method AC conversion : Average sensing rms reading Display : LCD max. 9999 count with annunciators Sampling rate : 1 time/sec. Over range indication : "OL" mark on LCD Data hold indication : "DH" mark on LCD Low battery indication : "Battery" mark on LCD Limitation of circuit voltage : Less than AC/DC 500V Operating temperature : 0～50℃, < 80%RH (without condensation) Storage temperature : -10～60℃, < 70%RH (without condensation) Withstanding voltage : AC 3700V/1 minute between CT and outer case Auto power off : Approx. 10 minutes after power on Power supply : LR03,AM-4 or AAA size Alkaline battery×3 Dimension : 44(W)×200(H)×24(D)mm Weight : Approx.210g Accessories : Carrying case : 1 Instruction manual : 1 Batteries : 3 Voltage input cable with fuse(3m) : 1set Accuracy (23 ℃ ±5 ℃ , less than 85%RH) Function Range Resolution Accuracy I0r 10mA 0.001mA ±1.5% rdg ± 10dgt 100mA 0.01mA ±1.2% rdg ± 10dgt I0 10mA 0.001mA ±1.0% rdg ± 10dgt 100mA 0.01mA ±1.0% rdg ± 10dgt 1000mA 0.1mA ±1.0% rdg ± 10dgt
Optional leakage current clamp adaptor AC1000A,10:1 and 100:1 CT Ratio Model LAD-800
SPEC Measuring Range : AC 1000A CT ratio : 10:1 100:1 CT inside size : 80mm×74mm Limitation of circuit voltage : AC 600V (50/60Hz) Weight : Approx. 500g
Zero phase current and load current measurements Model LAD-1100
SPEC Measuring Range : AC 3000mA～30A AC 30A～3000A CT ratio : 10:1 100:1 Range switch : Rotary switch CT inside size : 128mm×108mm Limitation of circuit voltage : AC 600V (50/60Hz) Weight : Approx. 180g