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The Fluke 1630-2/1630-2 FC Earth Ground Clamp (the Product or Clamp) is a handheld, battery-operated clamp that measures the ground resistance without auxiliary ground rods and AC leakage current. The Clamp is used in multi-grounded systems without disconnecting the ground under test.
The Clamp supports these applications:
The 1630-2 FC supports the Fluke Connect Wireless System (may not be available in all regions). Fluke Connect is a system that wirelessly connects your Clamp with an app on your smartphone or tablet. The app shows the ground resistance measurements on your smartphone or tablet display. You can save these measurements and images to Fluke Connect Cloud storage and share with your team. For more information, see Fluke Connect Wireless System.
Your shipment includes:
To contact Fluke, call one of the following telephone numbers:
Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To view, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals.
A identifies conditions and procedures that are dangerous to the user.
A identifies conditions and procedures that can cause damage to the Product or the equipment under test.
To prevent possible electrical shock, fire, or personal injury:
Symbols used on the Product and in this manual are explained in Table 1.
Table 1. Symbols
Symbol | Description | Symbol | Description |
WARNING. RISK OF DANGER. | ![]() | Battery | |
WARNING. HAZARDOUS VOLTAGE. Risk of electric shock. | ![]() | Certified by CSA Group to North American safety standards. | |
![]() | Consult user documentation. | ![]() | Conforms to European Union directives. |
![]() | Application around and removal from uninsulated hazardous live conductors is permitted. | ![]() | Conforms to relevant Australian EMC standards. |
![]() | Double Insulated | ![]() | Certified by TÜV SÜD Product Service. |
![]() | Do not operate within external low frequency magnetic fields >30A/m. | ![]() | Conforms to relevant South Korean EMC Standards. |
![]() | China metrology certification mark for measuring instruments manufactured in the People's Republic of China (PRC). | ||
![]() | Measurement Category III is applicable to test and measuring circuits connected to the distribution part of the building's low-voltage MAINS installation. | ||
![]() | Measurement Category IV is applicable to test and measuring circuits connected at the source of the building's lowvoltage MAINS installation. | ||
![]() | This product complies with the WEEE Directive marking requirements. The affixed label indicates that you must not discard this electrical/electronic product in domestic household waste. Product Category: With reference to the equipment types in the WEEE Directive Annex I, this product is classed as category 9 "Monitoring and Control Instrumentation" product. Do not dispose of this product as unsorted municipal waste. |
This section is information to know before you use the Clamp.
To prevent possible electrical shock, fire, or personal injury:
The Clamp has a power on/off button:
If Auto-Off Power is turned on, the Clamp turns off after 20 minutes of no use. See Power Auto-Off for more information about how to set this feature.
See Table 2 and Table 3 for the display features and button controls.
Table 2. Display Features
![]() | Item | Description | Item | Description |
1 | Fluke Connect | 10 | Measurement value or custom setting | |
2 | Hold | 11 | Ohms function | |
3 | ID# | 12 | Current in mA or A | |
4 | Alarm | 13 | Current type is AC | |
5 | Set Time | 14 | Memory in use | |
6 | Indicator for noise in ground electrode/rod | 15 | Filter is on (bandwidth 40 Hz to 70 Hz) | |
7 | Battery | 16 | Logging Interval settings | |
8 | Date/Time format | 17 | Jaws open | |
9 | Date/Time/ID number | 18 | Setting or explore for LOG |
Table 3. Controls
![]() | Item | Description |
1 | Jaw | |
2 | Tactile barrier | |
3 | Fluke Connect (radio) on/off | |
4 | Record measurements | |
5 | Hold the displayed value | |
6 | LCD | |
7 | Backlight | |
8 | Filter on/off | |
9 | Enter | |
10 | Value increment/decrement | |
11 | Change Clamp settings | |
12 | Select type of measurement | |
13 | Power on/off | |
14 | Alarm | |
15 | Jaw trigger | |
16 | Jaw trigger lock |
Push to change these settings:
The time interval for data logging is the time between measurements.
To set the log interval:
In alarm mode, the display shows ALARM and the beeper sounds when the measurement is outside the set threshold. The Clamp compares the reading with the high and low values. If the reading is larger than the high value, the Clamp beeps and shows on the display. If the reading is less than the low value, the Clamp beeps and
shows on the display.
To set the alarm threshold:
The Clamp has a time setting that is used as a timestamp for logged data.
To check or adjust the time setting:
The Clamp has a Setup menu for these subfunctions:
A backlight on the display improves visibility in dim light. To conserve battery power, turn off the backlight.
To change the backlight option:
To save battery power, you can set the clamp to automatically turn off the power after 20 minutes of no use.
To change the Auto-Off option:
To view the firmware version for the Clamp:
This section is about how to set up the Clamp for Earth resistance tests, AC leakage current measurements, and the Fluke Connect Wireless System.
The Clamp includes a trigger lock on the trigger. Push the jaw trigger lock and trigger together to open the jaw.
The Clamp generates a voltage to the system under test and the induced current in the system is measured by the Clamp. The Clamp uses Ohm's Law (R=U/I) to automatically calculate the resistance measurement.
To check the Clamp before ground resistance measurements:
Input (Ω) | Minimum | Maximum |
0.474 | 0.417 | 0.531 |
0.5 | 0.443 | 0.558 |
10 | 9.55 | 10.45 |
100 | 96.0 | 104.0 |
For ground resistance measurements:
Note
Based on the electromagnetic induction principle, the Clamp has a ring-shape current transformer comprised of a metal core and coil winding. The current transformer senses the magnetic field produced by the current or by the vector sum of the currents flowing in the conductor under test. The current transformer then produces a current proportional to the current flowing in the conductor.
For an AC leakage current measurement test:
The Clamp records data over time and saves >2000 measurements in memory at the set logging interval.
To start logging measurements, push . The display shows
to indicate that measurement logging is in progress See Figure 10.
Measurements are recorded at the sampling interval you specified. See Log Interval for more information.
Logging stops when:
Note
If the sampling interval is set at 0 seconds, only one data point is recorded. To record the next data point, press again. The memory location is also displayed for about 1 second.
Push to freeze the measurement value on the display.
Push again to continue and take measurements.
Push to toggle the filter on and off in the leakage current measurement mode. When
shows on the display, the clamp can isolate the 50/60 Hz fundamental frequency from the harmonics.
The 1630-2 FC supports the Fluke Connect Wireless System (may not be available in all regions). Fluke Connect uses low-power 802.15.4 wireless radio technology to connect the Clamp with an app on your smartphone or tablet. The wireless radio does not cause interference with meter measurements.
The app shows measurements from the connected Clamp on your smartphone or tablet display, saves to Fluke Connect Cloud™ storage, and shares the information with your team.
Radio Frequency Data
Note
Changes or modifications to the wireless 2.4 GHz radio not expressly approved by Fluke Corporation could void the user's authority to operate the equipment.
For complete information about radio frequency data, go to www.fluke.com/manuals and search for "Radio Frequency Data Class B".
Fluke Connect App
The Fluke Connect app works with Apple and Android mobile products. The app is available for download to your smart device from the Apple App Store and Google Play.
To use Fluke Connect:
You can log >2000 measurements in the Clamp memory.
To view logged measurements in memory:
To clear the memory:
To prevent a possible electrical shock, fire, or personal injury:
To avoid damaging the Clamp, do not use aromatic hydrocarbons or chlorinated solvents for cleaning. These solutions will react with the plastics used in the Clamp.
Clean the case with a damp cloth and weak detergent. Do not use a solvent or cleaners with abrasives.
To avoid false readings that could lead to possible electric shock or personal injury, replace the batteries as soon as the low battery indicator appears.
To replace the battery:
Read this manual to make sure the Product is used correctly. If the Clamp does not turn on, check the battery.
Replacement parts and accessories are shown in Table 5. For more information about parts and accessories, see How to Contact Fluke.
Table 5. Accessories and Replacement Parts
![]() | ||
Item | Description | Fluke Part or Model Number |
1 | AA Alkaline Battery, IEC LR6 (requires 4) | 373756 |
2 | Battery Door Assembly | 4779851 |
3 | Standard Loop Resistance | 4799496 |
Maximum Voltage to Earth Ground: 1000 V
Battery Type: AA alkaline IEC LR6 (x4)
Battery Life: >15 hours in Ground Resistance measurement mode, with backlight turned off, and RF mode turned off
Frequency Range
Filter OFF: 40 Hz to 1 kHz
Filter ON: 40 Hz to 70 Hz
Ingress Protection: IEC 60529: IP30 with jaw closed
LCD
Digital Reading: 9999 counts
Refresh Rate: 4/second
Temperature
Operating: -10°C to +50°C
Storage: -20°C to +60°C
Operating Humidity:
Non condensing (<10°C)
≤ 90% RH (at 10°C to 30°C)
≤ 75% RH (at 30°C to 40°C)
≤ 45% RH (at 40°C to 50°C)
(noncondensing)
Altitude
Operating: 2000 m
Storage: 12 000 m
Reference Temperature: 23°C ±5°C (73°F ±9°F)
Temperature Coefficient: 0.15% x reading/ °C (<18°C or >28°C)
Overload Indication: OL
Data Logging Capacity: >2000 data points
Data Logging Interval: 1 second to 59 minutes and 59 seconds
Safety
General: IEC 61010-1: Pollution Degree 2 IEC 61557-1
Measurement: IEC 61010-2-032: CAT IV 600 V / CAT III 1000 V
Current Clamp for Leakage Current Measurements: IEC 61557-13: Class 2, ≤30 A/m
Resistance to Earth: IEC 61557-5
Effectiveness of the Protective Measures: IEC 61557-16: cutoff frequency 20 kHz (-3 dB)
Electromagnetic Compatibility (EMC)
International: IEC 61326-1: Portable Electromagnetic Environment CISPR 11: Group 1, Class B, IEC 61326-2-2
Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio frequency energy that is necessary for the internal function of the equipment itself.
Class B: Equipment is suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes.
Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected to a test object.
Korea (KCC): Class A equipment (Industrial Broadcast & Communications Equipment)
Class A: Equipment meets requirements for industrial electromagnetic wave equipment and the seller or user should take notice of it. This equipment is intended for use in business environments and not to be used in homes.
USA (FCC): 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.
Wireless Radio
Frequency Range: 2412 MHz to 2462 MHz
Output Power: <10 mW
Radio Frequency Certification: FCC ID:T68-FBLE IC:6627A-FBLE
Conductor Size: 40 mm approximately
Dimensions (L x W x H): 283 mm x 105 mm x 48 mm
Weight: 880 g
Ground Loop Resistance
Frequency of measurement: 3.333 kHz.
Range | Accuracy [1] ± (% of reading + Ω) |
0.025 Ω to 0.249 Ω | 1.5% + 0.020 Ω |
0.250 Ω to 0.999 Ω | 1.5% + 0.050 Ω |
1.000 Ω to 9.999 Ω | 1.5% + 0.100 Ω |
10.00 Ω to 49.99 Ω | 1.5% + 0.30 Ω |
50.00 Ω to 99.99 Ω | 1.5% + 0.50 Ω |
100.0 Ω to 199.9 Ω | 3.0% + 1.0 Ω |
200.0 Ω to 399.9 Ω | 5.0% + 5.0 Ω |
400 Ω to 599 Ω | 10.0% + 10 Ω |
600 Ω to 1500 Ω | 20.00 % |
[1] Loop resistance with no inductance, conductor centered. |
AC Leakage Current mA
True rms, crest factor CF ≤3
Range | Resolution | Accuracy [1] ± (% of reading + mA) |
0.200 mA to 3.999 mA | 1 μA | 2.0% + 0.05 mA |
4.00 mA to 39.99 mA | 10 μ A | 2.0% + 0.03 mA |
40.0 mA to 399.9 mA | 100 μ A | 2.0% + 0.3 mA |
0.400 A to 3.999 A | 1 mA | 2.0% + 3 mA |
4.00 A to 39.99 A | 10 mA | 2.0% + 30 mA |
[1] Applies to signal frequency:
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©2017 Fluke Corporation. All rights reserved.
Specifications are subject to change without notification.
All product names are trademarks of their respective companies.
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
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