ETCR2900 Online Earth Resistance Tester Grounding Resistance Online Detection Instrument Monitoring

Specifications
Function：On-line monitoring ground resistance, ground voltage, equipotential connection resistance, low resistance.
Power Supply：Standard: 12V±1VDC, 150mA Max; Optional: 24V±1VDC.
Resistance Range and Resolution:0.01Ω~20Ω,Resolution:0.01Ω; 0.1Ω~200Ω, Resolution:0.1Ω; 1Ω~2000Ω, Resolution:1Ω
Resistance Accuracy:±1%rdg±3dgt(auxiliary ground resistance 100Ω±5%, voltage to ground<10V)
Voltage: Range,0~600V AC; Resolution，1V;Accuracy,±1%rdg±3dgt
Measure Mode:Precise 3-wire measurement, simple 2-wire measurement.
Measure Method: Ground resistance: rated current change-pole method, measured current 3mA Max, 820Hz; Voltage to ground: average value rectification method.
Data Mode：Mean.
Measuring Indicator:During measurement, LCD count down display.)
Display Mode：4-digital super-large LCD.
Measure Rate：Voltage to ground: about 2 times/second; ground resistance: about 30 seconds/time.
Measure Times：Over 5000 times(Measuring 10Ω for one time and take a pause for 30s).
Line Voltage：Measuring voltage to ground: measuring below AC 600V.
Instrument Interface:Pluggable terminal blocks: 9 pin connector.
Communication Method：RS485 (or optional RS232).
Communication Line：USB to RS485 communication line( or optionalUSB to RS232 communication line).
Data Storage: 400 sets, flash display FULL icon to indicate storage is full.
Interval Time：Range of automatic monitoring interval time: 1-999 h.
Data Access：Data read function: READ icon display.
Overflow Display: Exceeding measuring range overflow function: OL icon display.
Power Consumption: Backlit : 20mA Max; Standby: 25mA Max; Measurement: 70mA Max.
Overload Protection:Measurement ground resistance: E-P, E-C between each interfaces AC 280V/3 sec.
Insulation Value:Over 10MΩ(between circuit and enclosure 500V).
Withstand Voltage:AC 3700V/rms. (Between circuit and enclosure).