ETCR ETCR2900B 地面抵抗オンライン検出器 (0.01Ω~2000Ω, 0~600V AC, RS485 4G)

Power Supply Standard: 12V ± 1VDC, 400mA Max. Optional: 24V ± 1VDC (external supply)

Earth Resistance 

Range/Accuracy/Resolution

0.01Ω~20Ω / ±2%rdg±3dgt (auxiliary ground resistance 100Ω±5%, voltage to earth＜10V) / 0.01Ω

0.1Ω~200Ω / ±2%rdg±3dgt (auxiliary ground resistance 100Ω±5%, voltage to earth＜10V) /0.1Ω

1Ω~2000Ω / ±2%rdg±3dgt (auxiliary ground resistance 100Ω±5%, voltage to earth＜10V)/ 1Ω

Ground Voltage 

0~600V AC/±2%rdg±3dgt/1V

Measure Mode: Precise 3-wire measurement, simple 2-wire measurement

Measure Method 

Earth resistance: rated current change-pole method, measured current 11mA Max, 128Hz;

voltage to ground: average value rectification method

Weight Detector: 380g

Detector Dimension: 130mmX90mmX54mm

LCD Size 47mmX28.5mm

Measurement Time: Voltage to earth: about 2 times/second; earth resistance: about 30 seconds/time 

Measurement Rate: Over 10000 times 

Monitoring Interval Time: Setting range of automatic monitoring interval time: 1~999 h

Detector Interface: Pluggable terminal blocks: 9 pin terminal

Communication Mode: RS485 or 4G

Data Storage: 99 groups，flash display “99” symbol indicate storage is full

Data Access: Data access function : “READ” symbol display

Overflow Display: Overrange overflow function :”OL” symbol display

Alarm Indication: Audible and visible alarm

Power Supply Voltage: When power supply voltage lower than 10V, power voltage low symbol will display, and remind to replace the power 

Overload Protection: When measurement earth resistance: E-P, E-C between each interfaces AC 280V/3 seconds Electromagnetic Property: IEC61010-4-3,Wireless frequency electromagnetic field ≤ 1V/m

Line Voltage: Measuring the voltage to earth: Below AC 600V

Accessories: Detector: 1PCS; 4G communication module+ external antenna: 1PCS; 9P terminal block: 1PCS

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