เครื่องวัดค่าความต้านทานดิน

คุณสมบัติ

เครื่องวัดค่าความต้านทานดิน	รุ่น FLUKE-1621 KIT
Measuring Functions	3-Pole Earth ground Resistance, 2-Pole ac Resistance of a Conductor, Interference Voltage
Measuring Rate	2 Measurements/Second
Battery [1]	One 9 volt Alkaline (LR61)
Battery Condition	LO-BAT is Displayed if Voltage Drops Below 6.5 V
Voltages Between Jacks H/C2 and E/C1	250 Veff Maximum (Effective Voltage)
Between Jacks S/P2 and E/C1	250 Veff Maximum
Temperature Performance [2]	Working : -10 °C to +50 °C (+14 °F to +122 °F) / Operating : 0 °C to +35 °C (+32 °F to +95 °F) Storage : -20 °C to +60 °C (+68 °F to +140 °F) Reference : +23 °C ± 2 °C (+73 °F ± 4 °F)
Temperature Coefficient	± 0.1 % of Range Per Degree Kelvin
Safety	IEC/EN 61010-1, 600 V CAT II, Pollution Degree 2
Dimensions	113 mm x 54 mm x 216 mm (4.5 in x 2.1 in x 8.5 in), Including Holster Weight 850 g (1.9 lb), Including Standard Accessories, Volume Approximately 600 cm3

• Note: [1]If the tester is not going to be used, or is being stored for a long period, remove the battery and store separately from the tester to avoid damage from battery leakage.
• Note: [2]The four temperature ranges for the tester exists to satisfy European Standards requirements; the instrument can be used over the full working temperature range by using the temperature coefficient to calculate accuracy at the ambient temperature of use.

Electrical specifications

• Maximum Deviations: E1 Influence Factor Position
• E1 DeviationInfluence 0 %
• E2 Influence Factor Supply Voltage
• E2 Deviation Influence 0 %
• E3 Influence Factor Temperature E3
• E3 Deviation Influence 2.3 %
• E4 Influence Factor Serial Interference Voltage (20 V)
• E4 Deviation Influence 0.6 %
• E5 Influence Factor Probe- and Auxiliary Probe Resistance
• E5 Deviation Influence 10 %
• Test voltage 3.7 kV
• Protection type IP 40; IEC/EN 60529
• Electromagnetic Compatibility : Emission: IEC/EN 61326 Class B / Immunity: IEC/EN 61326 Annex C RE Resistance Measurement
• Measuring Method Current-Voltage Measurement With Improved Cross-talk Attenuation, no Compensation of Measuring Lead Resistance, With Probe (3-pole) or Without Probe (2-Pole), as Per IEC/EN 61557-5
• Open Circuit Voltage 23 to 24 V ac
• Short Circuit Current > 50 mA ac
• Measuring Frequency 128 Hz
• Maximum Permissible Overload 250 Veff
• Measuring Time 8 Seconds (Average From When START is Pressed)
• Limit input Tester Retains Set Value Even if Instrument is Turned Off (Assuming Battery Power Supply is Sufficient)

Automatic changeover of resolution

• RH < 7 kΩ Resolution 0.01 Ω
• RH < 50 kΩ Resolution 0.1 Ω
• RH > 50 kΩ Resolution 1 Ω
• Interference Voltage Display DC + AC Vmax 30 Veff
• Common Mode Rejection > 80 dB at 50 Hz and 60 Hz Ri 680 kΩ
• Measuring Uncertainty < 10 % for Pure AC and DC Signals
• Measuring range 15 Ω to 20 Ω / Resolution 0.01 Ω
• Display Range 0 to 19.99 Ω 200 Ω Resolution 0.1 Ω
• Display Range 20 to 199.9 Ω 2 kΩ Resolution 1 Ω
• Display Range 200 to 1999 Ω
• Intrinsic Uncertainty ± (6 % of Measured Value + 5D)
• Operating Uncertainty IEC 61557[1] ± (18 % of Measured Value + 5D)

Notes: [1] Covers All Deviations Caused by Influence Quantities E1-E5. If The Deviation E4 Caused by High Probe or Auxiliary Probe Resistance is Higher than Specified Flashes. Measured Values are Outside of The Specified Operating Uncertainty.

---

คุณสมบัติ

เครื่องวัดค่าความต้านทานดิน	รุ่น FLUKE-1623 KIT
Display	Fluke 1623 1999 digit LCD – Display With Special Symbols, Digit Height 25 mm, Fluorescent Backlight Fluke 1625 2999 Digit LCD – 7 Segment Liquid Crystal Display With Special Symbols and Backlight
Size	133 mm x 187 mm x 250 mm.
Weight	Fluke 1623 + 1625 1.1 kg (Icluding Batteries)
Safety Rating	CAT II, 300 V

---

RA 3-Pole Ground Resistance Me
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Short Circuit Current	Fluke 1623 > 50 mA Fluke 1625 250 mA ac
Measure Frequency	Fluke 1623 128 Hz Fluke 1625 94, 105, 111, 128Hz
Resolution	Fluke 1623 0.001 Ω to 10 Ω Fluke 1625 0.001 Ω to 100 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (2 % of Reading + 3 Digit) Fluke 1625 ± (2 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (5 % of Rading + 3 d) Fluke 1625 ± (5 % of Reading + 5 d)

---

RA 4-Pole Ground Resistance Measurement (IEC 1557-5)
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Short Circuit Current	Fluke 1623 > 50 mA Fluke 1625 250 mA ac
Measure Frequency	Fluke 1623 128 Hz Fluke 1625 94, 105, 111, 128Hz
Resolution	Fluke 1623 0.001 Ω to 10 Ω Fluke 1625 0.001 Ω to 100 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (2 % of Reading + 3 Digit) Fluke 1625 ± (2 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (5 % of Rading + 3 d) Fluke 1625 ± (5 % of Reading + 5 d)

---

RA 4-Pole Selective Ground Resistance Measurement With Current Clamp
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Short Circuit Current	Fluke 1623 > 50 mA Fluke 1625 250 mA ac
Measure Frequency	Fluke 1623 128 Hz Fluke 1625 94, 105, 111, 128Hz
Resolution	Fluke 1623 0.001 Ω to 10 Ω Fluke 1625 0.001 Ω to 10 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (7 % of Reading + 3 Digit) Fluke 1625 ± (7 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (10 % of Rading + 5 d) Fluke 1625 ± (10 % of Reading + 5 d)

---

Stakeless Ground Loop Measurement
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Measure Frequency	Fluke 1623 128 Hz (125 Hz on Request) Fluke 1625 94, 105, 111, 128Hz
Noise Current (Iext)	Fluke 1623 Max. Iext = 10 A (AC) (RA < 20 Ω) Max. Iext = 2 A (AC) (RA < 20 Ω) Fluke 1625 Max. Iext = 3 A
Resolution	Fluke 1623 0.001 Ω to 0.1 Ω Fluke 1625 0.001 Ω to 10 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (7 % of Reading + 3 Digit) Fluke 1625 ± (7 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (10 % of Rading + 5 d) Fluke 1625 ± (10 % of Reading + 5 d)

---

Environmental Specifications
Working Temperature	-10 °C to +50 °C
Operating Temperature	0 °C to +35 °C
Nominal Temperature	+18 °C to +28 °C
Storage Temperature	Fluke 1623 -20 °C to +60 °C Fluke 1625 -30 °C to +60 °C
Climatic Class	C1 (IEC 654-1), -5 °C to + 45 °C, 5 % to 95 % RH
Protection Type	IP56 for case, IP40 for Battery Door According to EN 60529

---

คุณสมบัติ

เครื่องวัดค่าความต้านทานดิน	รุ่น FLUKE-1625 KIT
Display	Fluke 1623 1999 digit LCD – Display With Special Symbols, Digit Height 25 mm, Fluorescent Backlight Fluke 1625 2999 Digit LCD – 7 Segment Liquid Crystal Display With Special Symbols and Backlight
Size	133 mm x 187 mm x 250 mm.
Weight	Fluke 1623 + 1625 1.1 kg (Icluding Batteries)
Safety Rating	CAT II, 300 V
Battery Life	Fluke 1623 Typical > 3000 Measurements Fluke 1625 Typical 3000 Measurements (RE+RH ≤ 1 kΩ) Typical 6000 Measurements (RE+RH ≤ 10 kΩ)

---

RA 3-Pole Ground Resistance Measurement (IEC 1557-5)
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Short Circuit Current	Fluke 1623 > 50 mA Fluke 1625 250 mA ac
Measure Frequency	Fluke 1623 128 Hz Fluke 1625 94, 105, 111, 128Hz
Resolution	Fluke 1623 0.001 Ω to 10 Ω Fluke 1625 0.001 Ω to 100 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (2 % of Reading + 3 Digit) Fluke 1625 ± (2 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (5 % of Rading + 3 d) Fluke 1625 ± (5 % of Reading + 5 d)

---

RA 4-Pole Ground Resistance Measurement (IEC 1557-5)
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Short Circuit Current	Fluke 1623 > 50 mA Fluke 1625 250 mA ac
Measure Frequency	Fluke 1623 128 Hz Fluke 1625 94, 105, 111, 128Hz
Resolution	Fluke 1623 0.001 Ω to 10 Ω Fluke 1625 0.001 Ω to 100 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (2 % of Reading + 3 Digit) Fluke 1625 ± (2 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (5 % of Rading + 3 d) Fluke 1625 ± (5 % of Reading + 5 d)

---

RA 3-Pole Selective Ground Resistance Measurement With Current Clamp
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Short Circuit Current	Fluke 1623 > 50 mA Fluke 1625 250 mA ac
Measure Frequency	Fluke 1623 128 Hz Fluke 1625 94, 105, 111, 128Hz
Resolution	Fluke 1623 0.001 Ω to 10 Ω Fluke 1625 0.001 Ω to 10 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (7 % of Reading + 3 Digit) Fluke 1625 ± (7 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (10 % of Rading + 5 d) Fluke 1625 ± (10 % of Reading + 5 d)

---

RA 3-Pole Selective Ground Resistance Measurement With Current Clamp
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Short Circuit Current	Fluke 1623 > 50 mA Fluke 1625 250 mA ac
Measure Frequency	Fluke 1623 128 Hz Fluke 1625 94, 105, 111, 128Hz
Resolution	Fluke 1623 0.001 Ω to 10 Ω Fluke 1625 0.001 Ω to 10 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (7 % of Reading + 3 Digit) Fluke 1625 ± (7 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (10 % of Rading + 5 d) Fluke 1625 ± (10 % of Reading + 5 d)

---

Stakeless Ground Loop Measurement
Measuring Voltage	Fluke 1623 Vm = 48 V ac Fluke 1625 Vm = 20/48 V ac
Measure Frequency	Fluke 1623 128 Hz (125 Hz on Request) Fluke 1625 94, 105, 111, 128Hz
Noise Current (Iext)	Fluke 1623 Max. Iext = 10 A (AC) (RA < 20 Ω) Max. Iext = 2 A (AC) (RA < 20 Ω) Fluke 1625 Max. Iext = 3 A
Resolution	Fluke 1623 0.001 Ω to 0.1 Ω Fluke 1625 0.001 Ω to 10 Ω
Measuring Range	Fluke 1623 0.001 Ω to 19.99 kΩ Fluke 1625 0.001 Ω to 299.9 kΩ
Intrinsic Error	Fluke 1623 ± (7 % of Reading + 3 Digit) Fluke 1625 ± (7 % of Reading + 2 d)
Operating Error	Fluke 1623 ± (10 % of Rading + 5 d) Fluke 1625 ± (10 % of Reading + 5 d)

---

Environmental Specifications
Working Temperature	-10 °C to +50 °C
Operating Temperature	0 °C to +35 °C
Nominal Temperature	+18 °C to +28 °C
Storage Temperature	Fluke 1623 -20 °C to +60 °C Fluke 1625 -30 °C to +60 °C
Climatic Class	C1 (IEC 654-1), -5 °C to + 45 °C, 5 % to 95 % RH
Protection Type	IP56 for case, IP40 for Battery Door According to EN 60529