Đồng hồ đo điện trở đất

Đồng hồ đo điện trở đất Kyoritsu


1. Kyoritsu 4200

THÔNG SỐ KỸ THUẬT:

Đo điện trở đất
+ Giải đo : 20Ω/200Ω/1200Ω
+ Độ phân giải : 0.01Ω/0.1Ω/1Ω/10Ω
+ Độ chính xác : ±1.5%±0.05Ω/±2%±0.5Ω/|±3%±2Ω/±5%±5Ω/|±10%±10Ω
Đo dòng AC
+ Giải đo : 100mA/1A/10A/30A
+ Độ phân giải : 0.1mA/1mA/0.01A/0.1A
+ Độ chính xác : ±2%
Thời gian phản hồi : 7s (Đo đất) và 2s ( Đo dòng)
Lấy mẫu : 1 times
Tự động tắt nguồn, thời gian đo khoảng 12h đến 24h liên tục
Đường kính kìm : 32mm max.
Kích thước : 246(L) × 120(W) × 54(D)mm
Khối lượng : 780g 
Phụ kiện : Pin, hộp đựng, hướng dẫn sử dụng
Bảo hành : 12 tháng
Hãng sản xuất : Kyoritsu - Nhật
Xuất xứ : Nhật

Giá bán: 17.670.000 vnđ



 
The earth resistance from 0.05 to 1200Ω can be measured without the auxiliary earth spikes.
(The Multiple Earthing System.)
True RMS
Accurate true RMS readings of AC current including distorted waveform from 1mA to 30.0A
Noise Check Function 
A function to detect current, which effects on an earth resistance measurement and display "NOISE" mark on the LCD.
Memory function 
Save and display up to 100 measurement data.
Data hold function / Buzzer function / Back light function
Compliant with Safety Standards of IEC 61010-1 : CAT.IV 300V Pollution degree2
 
Note:
A single earthing can not be measured. (Only for Multiple Earthing System)

TRUE RMS   
4200
CE

  
 
FunctionRangeResolutionMeasuring rangeAccuracy
Earth resistance Auto range20Ω0.01Ω*0.00~20.99Ω|±1.5%±0.05Ω
200Ω0.1Ω16.0~99.9Ω|±2%±0.5Ω
100.0~209.9Ω|±3%±2Ω
1200Ω160~399Ω|±5%±5Ω
400~599Ω|±10%±10Ω
10Ω600~1260Ω---
AC current
(50Hz / 60Hz)
Auto range
100mA0.1mA0.0~104.9mA|±2%±0.7mA
1000mA1mA80~1049mA|±2%
10A0.01A0.80~10.49A
30A0.1A8.0~31.5A
Operating system
Earth resistance function :Constant voltage injection,
Current detection, 
(Frequency : Approx.2400Hz)
Dual Integration
AC current function :Successive Approximation
Over-range indication"OL" is displayed when input exceeds the upper limit of a measuring range
Response timeApprox.7 seconds (Earth resistance)
Approx.2 seconds (AC current)
Sample rateApprox. 1 times per second
Power sourceDC6V : R6P (sizeAA manganese battery) × 4pcs,
or LR6 (sizeAA alkaline battery) × 4pcs
Current consumptionApprox. 50mA (max. 100mA)
Measurement timeApprox. 12 hours (when R6P is used)
Approx. 24 hours (when LR6 is used)
Auto power-offTurns power off about 10 minutes after the last button operation.
Applicable standardsIEC 61010-1 : 2001 (CAT.IV 300V Pollution degree2)
Withstand voltageAC5320Vrms / 5 seconds
Between the Transformer jaws fitted parts and Case enclosure
(except for jaws)
Conductor sizeApprox. 32mm max.
Dimension246(L) × 120(W) × 54(D)mm
WeightApprox. 780g (including batteries)
AccessoriesBattery R6P : 4pcs Instruction manual : 1pc
8304 (Resister for operation check : 1pc)
9128 (Hard case : 1pc)
•Crest factor < 3 (50Hz / 60Hz, peak value shall not exceed 60A)
*4 counts or less are corrected to 0.
  
 
Why earth resistance can be found by only clamping it?


Rx, is defined as earth resistance under test, and R1, R2...Rn are defined as earth resistance of other measuring objects.

These earth resistances, R1, R2, Rn can be considered that they are connected in parallel.
And they can be regarded as a combined resistance Rs. The Rs can be regarded small enough against Rx since a combined resistance consists of several resistances. Following is an equivalent circuit diagram of this circuit.

Voltage V is applied to the object (Resistance Rx) measured from the voltage injection transformer CT1, and the current I corresponding to the earth resistance is flowed.
The current I is detected with detection transformer CT2, and object (Resistance Rx) measured can be put out by the calculation. (refer to the right diagram)



2.  KYORITSU 4106

THÔNG SỐ KỸ THUẬT:

Máy đo điện trở đất - Điện trở suất KYORITSU 4106, K4106 có các thông số kỹ thuật sau:

Đo điện trở đất :
+ Giải đo : 2Ω/20Ω/200Ω/2000Ω/20kΩ/200kΩ
+ Độ phân giải : 0.001Ω/0.01Ω/0.1Ω/1Ω/10Ω/100Ω
+ Độ chính xác : ±2%rdg±0.03Ω
Đo điện trở suất ρ :
+ Giải đo :  2Ω/20Ω/200Ω/2000Ω/20kΩ/200kΩ
+ Độ phân giải : 0.1Ω•m~1Ω•m
+ Độ chính xác : ρ=2×π×a×R
Thẻ nhớ : 800 dữ liệu
Truyền thông : USB (Model 8112)
Màn hình LCD
Chỉ báo quá dải bằng : " OL"
Nguồn : DC12V, Pin AA (R6P) x 8
Kích thước : 167(L) × 185(W) × 89(D) mm
Khối lượng : 900g
Phụ kiện :
+ Model 7229A - Dây đo (Xanh, vàng, đỏ, đen)
+ Model 7238A - Đầu đo, khớp nối
+ Model 8032 - 2 cọc sắt T cắm đất
+ CD, Cáp USB
+ Hộp đựng
+ Pin R6P) x 8, Hướng dẫn sử dụng
Bảo hành : 12 tháng
Hãng sản xuất : Kyoritsu - Nhật
Xuất xứ : Nhật

Giá bán: 29.320.000 vnđ


 
High test current up to 80mA yielding resolution of 0.001Ω on 2Ω range.
Advanced Filtering method (based on FFT Fast Fourier Transform) reduces noise interference for obtaining stable measurements.
Automatic and Manual selection of the Test Current Frequency in four bands (94/105/111/128Hz). In Automatic mode, KEW 4106 will select the most suitable Frequency.
Several sub-results can be shown on the display: Resistance of the Auxiliary Earth Spikes, Frequency of Test Current, Voltage and Frequency of Interference (noise), Residual Resistance Rk, etc.
Warning for excessive noise and high Auxiliary Earth Spikes resistance.
4106
CE
Large Graphic Display with backlight for readings in poorly illuminated areas.
Up to 800 measurement results can be saved in the memory and recalled on the display.
The stored results can be transferred to a PC using the "KEW Report" software and a USB adaptor (Model 8212-USB) which are included.
Robust design with IP54 protection.
  
 
FunctionRangeResolutionMeasuring rangeAccuracy
Earth resistance
Re
(Rg at
ρ measurement)
0.001Ω0.03~2.099Ω|±2%rdg±0.03Ω
20Ω0.01Ω0.03~20.99Ω|±2%rdg±5dgt (*1)
200Ω0.1Ω0.3~209.9Ω
2000Ω3~2099Ω
20kΩ10Ω0.03~20.99kΩ
200kΩ100Ω3~209.9kΩ
Auxiliary earth resistance
Rh, Rs
   8% of Re+Rh+Rs
Earth resistivity
ρ
0.1Ω•m~1Ω•m
Autoranging
0.2~395.6Ω•mρ=2×π×a×Rg (*2)
20Ω0.2~3956Ω•m
200Ω20~39.56kΩ•m
2000Ω0.2~395.6kΩ•m
20kΩ2.0~1999kΩ•m
200kΩ
Series interference voltage
Ust (A.C only) (*3)
50V0.1V0~50.9Vrms|±2%rdg±2dgt (50/60Hz)
|±3%rdg±2dgt (40~500Hz)
Frequency
Fst
Autoranging0.1Hz
1Hz
40Hz~500Hz|±1%rdg±2dgt
Measuring methodEarth resistance: Fall-of-potential method (currents and voltages measured via the Probes)
Measurement method of Earth Resistivity (ρ): Wenner 4-pole method
Series interference voltage (earth voltage): RMS Rectifier (between the E-S Terminals)
Memory capacity800 data
Communication InterfaceModel 8212-USB Optical Adaptor
LCDDot-matrix 192×64 monochrome
Over-range Indication"OL"
Overload Protectionbetween E-S(P) and between E-H(C) terminals AC280V / 10 sec.
Withstand voltagebetween the electrical circuit and enclosure AC3540V(50/60Hz) / 5 sec.
Applicable standardsIEC 61010-1 CAT.III 300V, CAT.IV 150V Pollution degree 2
IEC 61010-031, IEC 61557-1, 5, IEC 61326-1 (EMC), IEC 60529 (IP54)
Power sourceDC12V : sizeAA manganese dry battery (R6P) × 8
(Auto power off: approx. 5 minutes)
Dimensions167(L) × 185(W) × 89(D) mm
Weightapprox. 900g (including batteries)
Accessories7229A (Earth precision measurement),
7238A (Simplified measurement test leads),
8032 (Auxiliary earth spikes [2 spiks/set])×2 sets (4 spikes in total),
8200-04 (Cord reel [4 pcs])×1 set,
8212-USB (USB adaptor with "KEW Report(Software)"),
9121 (Shoulder strap),
9125 (Carrying case),
R6P×8, Instruction manual, Calibration certificate
Optional8212-RS232C (RS232C adaptor with "KEW Report(Software)")



3. KYORITSU 4105A


THÔNG SỐ KỸ THUẬT:

Máy đo điện trở đất KYORITSU 4105A, K4105A có các thông số kỹ thuật sau

Hộp mềm
Giải đo
+ Điện trở : 0~20Ω/0~200Ω/0~2000Ω
+ Điện áp đất  [50,60Hz]: 0~200V AC
Độ chính xác
+ Điện trở: ±2%rdg±0.1Ω (20Ωrange)
              ±2%rdg±3dgt (200Ω/2000Ωrange)
+ Điện áp đất : : ±1%rdg±4dgt
Nguồn :     R6P (AA) (1.5V) × 6
Kích thước : 105(L) × 158(W) × 70(D)mm
Khối lượng : 550g approx.
Phụ kiện:
+ 7095A (Earth resistance test leads) × 1set
(red-20m, yellow-10m, green-5m)
+ 8032 (Auxiliary earth spikes) × 1set
+ 7127A (Simplified measurement probe) × 1set
 + R6P (AA) × 6


Giá bán: 4.210.000 vnđ



 

Dust and drip proof.(designed to IEC 529 IP54)
In addition to the facility for precision measurement, test leads for simplified two wire measuring system also supplied as standard accessories.
(unit can be hung from the neck for simplified measurement)
Designed to meet IEC 61010-1 safety standard.
Capable of measuring earth voltage.
Automatic warning when resistance of auxiliary earth spikes is in excess of tolerance.
Small and lightweight. Shock resistant new case material.
2mA measuring current permits earth resistance tests without tripping earth leakage current breakers in the circuit under test.
4105A
CE
4105A Soft Case Model
4105A-H Hard Case Model
4105A Soft Case Model
4105A-H Hard Case Model
 
Measurement
Ranges
Earth Resistance: 0~20Ω/0~200Ω/0~2000Ω
Earth Voltage [50,60Hz]: 0~200V AC
AccuracyEarth Resistance: ±2%rdg±0.1Ω (20Ωrange)
|±2%rdg±3dgt (200Ω/2000Ωrange)
Earth Voltage: ±1%rdg±4dgt
Overload ProtectionEarth Resistance: 280V AC for 10 seconds
across 2 of the 3 terminals
Earth Voltage: 300V AC for 1 minute
Safety StandardIEC 61010-1 CAT.III 300V Pollution Degree 2, IEC 61557
Applicable StandardsIEC 60529 IP54
Withstand Voltage3700V AC for 1 minute
Power SourceR6P (AA) (1.5V) × 6
Dimensions105(L) × 158(W) × 70(D)mm
Weight550g approx.
Accessories7095A (Earth resistance test leads) × 1set
(red-20m, yellow-10m, green-5m)
8032 (Auxiliary earth spikes) × 1set
7127A (Simplified measurement probe) × 1set
R6P (AA) × 6
Neck strap
Instruction Manual
Carrying Case: 9084 (Soft case)
 9165 (Hard case)
Optional7100 (Precision measurement cord set)



4. KYORITSU 4102A



THÔNG SỐ KỸ THUẬT:

Máy đo điện trở đất KYORITSU 4102A, K4102A có các thông số kỹ thuật sau

Vỏ hộp mềm
Giải đo :
+ Điện trở đất : 0~12 Ω/0~120 Ω/0~1200 Ω
+ Điện áp đất : [50,60Hz]: 0~30V AC
+ Độ chính xác :
+ Điện trở đất : ±3% 
+ Điện áp đất : ±3% 
Nguồn :    R6P (AA) (1.5V) × 6
Kích thước : 105(L) × 158(W) × 70(D)mm
Khối lượng : 600g approx.
Phụ kiện :
 + 7095A (Earth resistance test leads) × 1set
(red-20m, yellow-10m, green-5m)
+ 8032 (Auxiliary earth spikes) × 1set
+ 7127A (Simplified measurement probe) × 1set
+ R6P (AA) × 6
+ Vỏ hộp mềm
Bảo hành : 12 tháng
Hãng sản xuất : Kyoritsu - Nhật
Xuất xứ : Thái Lan

Giá bán: 3.940.000 vnđ


Earth Testers

MODEL4102A
 
4102ASoft Case Model
4102A-HHard Case Model
 

The latest circuit design permits the instrument to operate with the minimum of influence from earth voltage and earth resistance of auxiliary earth spikes.
Dust and drip proof. (designed to IEC 529 IP54)
Earth resistance value can be read directly from the scale.
Designed to meet IEC 61010-1 safety standard.
Capable of measuring earth voltage.
Small and lightweight. Shock resistant new case material.
2mA measuring current permits earth resistance tests without tripping earth leakage current breakers in the circuit under test.
Lead wire connection to C and P terminals and proper auxiliary earth resistance can be checked by "OK" lamp. Lead wire connection to C and E terminals is good when "OK" lamp is illuminated.
4102A
CE

4102A Soft Case Model
4102A-H Hard Case Model
4102A Soft Case Model
4102A-H Hard Case Model
 
Measurement
Ranges
Earth Resistance: 0~12 Ω/0~120 Ω/0~1200 Ω
Earth Voltage [50,60Hz]: 0~30V AC
AccuracyEarth Resistance: ±3% of full scale
Earth Voltage: ±3% of full scale
Overload ProtectionEarth Resistance: 276V AC for 10 seconds
across 2 of the 3 terminals
Earth Voltage: 276V AC for 1 minute
Safety StandardIEC 61010-1 CAT.III 300V Pollution Degree 2, IEC 61557
Applicable StandardsIEC 60529 IP54
Withstand Voltage3700V AC for 1 minute
Power SourceR6P (AA) (1.5V) × 6
Dimensions105(L) × 158(W) × 70(D)mm
Weight600g approx.
Accessories7095A (Earth resistance test leads) × 1set
(red-20m, yellow-10m, green-5m)
8032 (Auxiliary earth spikes) × 1set
7127A (Simplified measurement probe) × 1set
R6P (AA) × 6
Neck strap
Instruction Manual
Carrying Case: 9084 (Soft case)
 9164 (Hard case)
Optional

7100 (Precision measurement cord set)





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