Ⅰ. Introduction ETCR Clamp Earth Resistance Tester is widely applied in ground resistance measurement, loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil field, architecture and industrial electrical equipment, etc. When measuring ground system with loop, there is no need to disconnect the ground wire without auxiliary electrode, which means safer and faster. ETCR Clamp Earth Resistance Tester can measure the ground fault which can not be measured by traditional method, can apply in the occasion where traditional methods are unworkable; ETCR Clamp Earth Resistance Tester measures the integrated value of ground resistance and resistance lead. What’s more, ETCR 2100C+ Series tester can measure the leakage current of ground wire.ETCR new Clamp Earth Resistance Tester is another perfect upgrade on old models. The performance contrast of new and old products shows below :
Items
ETCR2000 (Old Type)
ETCR2000+ (New Type)
Product Appearance
Boot Time
Self-test needs 6 seconds，long boot time may easily result in boot error.
Self-test in 0.5 second, boot instantly
Measuring Range
0.01-1000Ω
0.01-1200Ω, Wider range
Stored Data
30 sets
99 sets
Beep Alarming
No
Yes
Interference Identification
No
With beeps and NOISE symbol blinking. Strong anti-interference ability.
RS232 Interface
No
RS232 interface Available
Power Consumption
100mA。Maximum 100mA
Maximum 50mA, Longer battery life
Meter Appearance
Heavy machine, Rough appearance, Hard operation
Fine appearance, More fixed structure, Easy operation
Battery Cover
No screws, Easy to result in accident hidden trouble due to battery off.
With fastening screws, Secure, Reliable, Easy battery replacement。
Ⅱ. Technical Specifications
Function
Ground resistance test, Loop resistance test
Power Supply
6VDC 4 PCS of AA Alkaline batteries
Resistance Range
0.01-1200Ω
Resistance Resolution
0.001Ω
Highest Resistance Accuracy
±1%±0.01Ω
Current Range
0.00mA-20.0A
Current Resolution
0.05mA
Highest Current Accuracy
±2.5%±1mA
Data memory
99 Sets
Alarm Threshold Setting Range
Resistance: 1-199Ω
Alarm Sound and Light
“Beep-beep-beep” alarm tone, Alarm Symbol Flashing, Press AL key to turn on, turn off Alarm or set Alarm Threshold.
Interference Signal Recognition
“Beep-beep-beep” tone, NOISE symbol blinking
Working Temperature and Humidity
-20℃-55℃；20％RH-90％RH
LCD Screen
4 Digits LCD display, Screen L×W: 47mm×28.5mm
Clamp Size
Φ32mm
Clamp Opening Extent
32mm
Tester Weight
1160g (With batteries)
Clamp Dimension
L×W×T: 285mm×85mm×56mm
Protection Level
Dual Insulation
Structural Feature
Clamp CT
Shifting
Automatic shifting
External magnetic field
＜40A/m
External electrical field
＜1V/m
Single measurement time
0.5 second
Resistance measurement frequency
＞1KHz
Measured current frequency
50/60Hz Automatic measurement
Low Battery Indication
Low battery symbol displays when battery is lower then 5.3V
Memory Full Indication
MEM symbol blinks when all 99 sets memory is full
Over Range Indication
Out of range indication “OLΩ”, “L0.01” or “OL A”
Auto Power-off
5 minutes after Boot up
Power Consumption
Max 50mA either in booting up or normally working, Continuously working for 30 hours
RS232 Interface (Optional)
The data stored in the meter are uploaded to the computer through RS232 interface and data wire, Then generate report files
