True RMS Digital Insulation Multimeter

Model KM 877 (23 functions 73 ranges)



Special Features :
• VFD V & Hz readings.
• Paper White Backlight LCD Display
• Record MAX / MIN readings.
• Display Hold Function.
• Dual Digital Display.
• PI & DAR Function.
• Autoranging.
• Pass /Fail Insulation Resistance Compare function; 12 selectable Preset Values.
• LOCK-Test mode for Insulation Resistance & Earth Continuity Test.
• BeepJack ™ audible & visible input warning.
• Remote Probe for insulation Resistance & Earth Continuity Test.
• Functions : DC/AC Voltage , VFD AC Voltage, Insulation Resisitance, Resistance, Earth Continuity Test, Hz Line Level Frequency

Specifications :
Sensing : AC, True RMS
Display : 3-5/6 digits 6000 Counts Backlight LCD Display.
61 Segments Analog Bar Graph : 60 per second max.
• Auto or Manual-ranging mode.
• Auto Power Off.
Polarity : Automatic
Update Rate : 5 per second nominal
Earth Continuity Test : 110mA @20 Ω range, 220mA @2.0 Ω range.
Tester can perform at least 3000 Earth Continuity Test measurements with new alkaline batteries at room temperature. These are standard test of 1 Ω with a duty cycle of 5 seconds on & 25 seconds off.


• Insulation Resistance @ 1mA Test Current :
  50V output Voltage :25mA, 100V output Voltage : 45mA
  250V output Voltage : 85mA, 500V output Voltage : 170mA
  1000V output Voltage : 440mA
  Tester can perform at least 950 Insulation Tests with new alkaline batteries at room temperature.
  These are standard tests of 1000V into 1MΩ with a duty cycle of 5 seconds on and 25 seconds off.
Operating Temperature : -10°C ~ 40°C
Relative Humidity : Maximum relative humidity 90% for temperature up to 28°C decreasing linearly to 50% relative humidity at 40°C.
Pollution degree : 2
IP Rating : IP40
Storage Temperature : -20°C ~ 60°C, < 80% R.H. (with battery removed)
Altitude : Operating below 2000m
Temperature Coefficient : Nominal 0.15 x (specified accuracy)/ °C @(-10°C~18°C or 28°C~40°C), or otherwise specified.
Low Battery : approx. 4.6V
Power Supply : Four Alkaline AA batteries
Power Consumption : 4.5mA typical except : ACV +Hz & VFD ACV +Hz : 7.0mA
APO Timing : Idle for 20 minutes
APO Consumption : 50 µA typical
Dimension: 208(L) X 103(W) X 64.5(H) mm with holster
Weight : 635 gm with holster.
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