Máy đo điện trở đất Ega Master 51250

EARTH GROUND TESTER

MÁY ĐO ĐIỆN TRỞ ĐẤT

3. GENERAL SPECIFICATIONS

3. GENERAL SPECIFICATIONS

3.1 - Operating temperature and Relative humidity(20ºC±5ºC&≤75%RH):

Range			Measure Range	Best Accuracy
Earth Voltage			0V~200V(50/60Hz)	±(1.0%+4)
Earth Resistance	20Ω		0.00Ω ~20.00Ω	±(2.0%+10) (20 position) ±(2.0%+3)(200 or 2000 position) (Auxiliary earth resistance 500Ω(accuracy ±5%); earth voltage≤10Vac)
	200Ω	0.0Ω ~200.0Ω
	2000Ω	0Ω ~2000Ω

 

Application standard:

IEC 61010-1 CATIII 600V Polluting Grading: Grade II

IEC 61557-1,5

IEC 61010-2-31

3.3 Measure methods:

(1) Earth Voltage Testing:average respond

(2) Earth Resistance Testing : testing signal frequency : around 820Hz, current: 20Ω position around 3.2mA.

3.4 Maximum operating accuracy:

Maximum operating accuracy within measure range: (±30%)

20Ω: 5.00Ω~20.00Ω

200Ω: 20.0Ω~200.0Ω

2000Ω: 200Ω~2000Ω

3.5 Working condition:

Temperature: 5ºC~40ºC

Relative humidity: ≤80%RH (no fog)

Height above Sea Level: ≤2000 meters

3.6 Storage condition:

Temperature: -20ºC~60ºC

Relative humidity: 75%RH (no fog)

3.7 Power source: [1.5V Alkaline Battery (AA)*6]

3.8 Overload protection:

Earth Resistance: 200 Vac (10 seconds)

Earth Voltage: 400 Vac (30 seconds)

3.9 Insulation Resistance:The insulation impedance between measure circuit and housing is not less than 20MΩ.

3.10 Product size:160mmx70.5mmx100mm.