Owner manual

8
● Measuring method for Earth Resistance
Fall-of-potential method (currents and voltages measured via the Probes)
● Measurement method of Earth Resistivity (ρ)
Wenner 4-pole method
● Output Characteristics
Measuring Voltage Um (max.) approx 10Vrms 94Hz, 105Hz, 111Hz,
128Hz
Measuring Current Im (max.) approx 80mA, however, Im ×（Re+Rh）
< Um
● Measuring Method for Series Interference Voltage (earth voltage)
RMS Rectifier (between the E-S Terminals）
● Memory Capacity : 800 data
● Communication Interface : Model 8212USB Optical Adaptor
● LCD Dot-matrix 192×64, monochrome
Backlight
Earth resistance : max 209.9kΩ
Earth resistivity : 1999kΩ･m
Series Interference Voltage : max 50.9V
● Low Battery Warning : Battery mark appears.
● Continuous Measurement : 400 times or more with manganese batteries;
repeating measurements at every 30 sec
with a load of 1Ω at 2Ω Range.
● Over-range Indication : “OL”
● Auto-Power-Off : automatically powered off when 5 min
passes without any Key operation.
● Location for use : Indoor/ Outdoor use (Not completely waterproof),
altitude 2000m or less
● Applicable range : Testing earth resistance on power distribution
lines, in-house wiring system and electrical
appliances
● Temperature & Humidity range (guaranteed accuracy) :
23℃±5℃ , relative humidity 85％ or less (no condensation)
● Operating Temperature & Humidity range :
-10℃
~
50℃ , relative humidity 75％ or less (no condensation)
* Supplied Test leads cannot be used at 0ºC or less.
● Storage Temperature & Humidity range :
-20℃
~
60℃ , relative humidity 75％ or less (no condensation)
● Overload Protection : between E-S(P) and between E-H(C) terminals
AC280V / 10 sec
● Withstand Voltage : between the electrical circuit and enclosure
AC3540V(50/60Hz) / 5 sec
● Insulation Resistance : between the electrical circuit and enclosure
50MΩ or more / DC1000Ｖ