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Fluke 107 ESP Palm-Sized Digital Multimeter, CAT III, 600 V

Model: 107 ESP | Order No: 107 | UPC: 095969678780

Fluke 107 ESP Palm-Sized Digital Multimeter, CAT III, 600 V-


Downloads: datasheet manual

Fluke 107 ESP Palm-Sized Digital Multimeter, CAT III, 600 V

Model: 107 ESP | Order No: 107

Comes in a compact, rugged, ergonomic design and is easy-to-use. This palm-sized digital multimeter is ideal for troubleshooting and is small enough to fit in a shirt pocket or work bag.

Comes in a compact, rugged, ergonomic design and is easy-to-use. This palm-sized digital multimeter is ideal for troubleshooting and is small enough to fit in a shirt pocket or work bag.

Your Price $119.99 USD
Availability 31 in Stock
Quantity

Add In-House Traceable Calibration to your 107

Add In-House Traceable Calibration to your 107


Fluke 107 ESP Offers

Features

  • Enabled with current and voltage measurement functions, in a compact size
  • Measures resistance & continuity to check for broken wires
  • Data hold and backlit display to keep you working safe and fast
  • Ergonomic and rugged
  • Comfortable grip, only weighs 200g and easy to carry
  • Rugged enclosure and 3.3' (1 m) drop test
  • Full-parameter automatic range test, which is convenient and quick to test; at the same time, it reduces the number of rotations of the wave plate and prolongs the life of the instrument
  • 6000-word large screen LCD backlight display
  • Battery powered, automatic power save mode
  • Data retention feature makes it easier to read measurement results
  • Compliant with IEC61010-1 CATIII 600V overvoltage protection safety standard

Complete test functions

  • AC and DC voltage measurement
  • AC and DC current measurement
  • Resistance measurement
  • Capacitance measurement
  • Diode measurement
  • Frequency and duty cycle test and other functions to meet basic electrical maintenance, electrical measurement, and electronic measurement applications

Applications

  • Basic electrical maintenance
  • Electrical measurement
  • Electronic measurement

Fluke 107 ESP Specifications

Electrical Specifications
AC Volts (40 to 500 Hz) Range: 6, 60, 600 V
Resolution: 0.001, 0.01, 0.1 V
Accuracy: 1.0% + 3
DC Volts Range: 6, 60, 600 V
Resolution: 0.001, 0.01, 0.1 V
Accuracy: 0.5% + 3
AC Millivolts Range: 600 mV
Resolution: 0.1 mV
Accuracy: 3.0% + 3
Diode Test Range: 2 V
Resolution: 0.001 V
Accuracy: 10%
Resistance (Ohms) Range: 400 Ω, 4, 40, 400 kΩ, 4, 40 MΩ
Resolution: 0.1 Ω, 0.001, 0.01, 0.1 kΩ, 0.001, 0.01 MΩ
Accuracy: 0.5% + 3, 0.5% + 3, 0.5% + 3, 0.5% + 3, 0.5% + 3, 1.5% + 3
Capacitance Range: 50, 500 nF, 5, 50, 500, 1000 µF
Resolution: 0.01, 0.1 nF, 0.001, 0.01, 0.1, 1µF
Accuracy: 2% + 5, 2% + 5, 5% + 5, 5% + 5, 5% + 5, 5% + 5
Frequency (10 Hz to 100 kHz) Range: 50, 500 Hz, 5, 50, 100 kHz
Resolution: 0.01, 0.1 Hz, 0.001, 0.01, 0.1 kHz
Accuracy: 0.1% + 3
Duty Cycle Range: 0.1 to 99.9%
Resolution: 0.1%
Accuracy: 1% typical
AC Current (40 to 200 Hz) Range: 4, 10 A
Resolution: 0.001, 0.01 A
Accuracy: 1.5% + 3
DC Current (40 to 200 Hz) Range: 4, 10 A
Resolution: 0.001, 0.01 A
Accuracy: 1.5% + 3
Backlight Accuracy: Yes
AC Volts Overload protection: 600 V
Input impedance (nominal): >10 MΩ, <100 pF
Common mode rejection ratio: >60 dB at DC, 50 or 60 Hz
AC Millivolts Overload protection: 600 mV
Input impedance (nominal): >1 M, <100 pF
Common mode rejection ratio: >80 dB at 50 or 60 Hz
DC Volts Overload protection: 600 V
Input impedance (nominal): >10 MΩ, <100 pF
Common mode rejection ratio: >100 dB at DC, 50 or 60 Hz
Normal mode rejection ratio: >45 dB at 50 or 60 Hz
General Specifications
Maximum Voltage Between Any Terminal and Earth Ground 600 V
Display (LCD) 6000 counts, updates 3/sec
Battery Type 2 x AAA Batteries, NEDA 24A, IEC LR03
Battery Life 200 hours minimum
Temperature Operating: 32 to 104°F (0 to 40°C)
Storage: -22 to 140°F (-30 to 60°C)
Operating Humidity: Non-condensing when <50°F (<10°C) ≤90% at 50 to 86°F (10 to 30°C)
≤75% at 50 to 104°F (30 to 40°C)
Operating Humidity, 40 MΩ Range ≤80% at 50 to 86°F (10 to 30°C)
≤70% at 50 to 104°F (30 to 40°C)
Altitude Operating: 6561.7' (2000 m)
Storage: 39,370.1' (12,000 m)
Temperature Coefficient 0.1 X (specified accuracy)/°C (<18 or >28°C)
Fuse Protection for Current Inputs 11 A, 1000 V fast fuse
Dimensions 5.6 x 2.7 x 1.1" (142 x 69 x 28 mm)
Weight 0.44 lb (200 g)
IP Rating IEC 60529: IP40
Safety IEC 61010-1: 600 V CAT III, Pollution Degree 2
Electromagnetic Environment IEC 61326-1: portable
Click here for complete specifications on the Fluke 107 ESP

What's included with the Fluke 107 ESP

  • Multimeter
  • Test Lead Set
  • Magnetic Multi-Purpose Lanyard
  • 2 x AAA Batteries (Installed)

Multimeter measurements on adjustable speed drives

In the past, motor repair meant dealing with traditional three-phase motor failures that were largely the result of water, dust, grease, failed bearings, misaligned motor shafts, or just plain old age. But motor repair has changed in a big way with the introduction of electronically controlled motors, more commonly referred to as adjustable speed drives (ASDs). These drives present a unique set of measurement problems that can vex the most seasoned pro. Thanks to new technology, now for the first time you can take accurate electrical measurements with a DMM during the installation and maintenance of a drive and diagnose bad components and other conditions that may lead to premature failure.

Troubleshooting philosophy

Technicians use many different methods to troubleshoot an electrical circuit, and a good troubleshooter will always find the problem - eventually. The trick is tracking it down quickly and keeping downtime to a minimum. The most efficient troubleshooting procedure begins at the motor and then works systematically back to the electrical source, looking for the most obvious problems first. A lot of time and money can be wasted replacing perfectly good parts when the problem is simply a loose connection. As you go, take care to take accurate measurements. Nobody takes inaccurate measurements on purpose, but it's easy to do, especially when working in a high energy, noisy environment like an ASD. Likewise, choosing the right test tools for troubleshooting the drive, the motor, and the connections is of utmost importance. This is especially true when taking voltage, frequency and current measurements on the output side of the motor drive. But until now, there hasn't been a digital multimeter on the market able to accurately measure ASDs. Incorporates a selectable low pass filter* that allows for accurate drive output measurements that agree with the motor drive controller display indicator. Now, technicians won't have to guess whether the drive is operating correctly and delivering the correct voltage, current or frequency for a given control setting.

Drive measurements

Input side measurements

Any good quality True RMS multimeter can verify proper input power to an ASD. The input voltage readings should be within 1% of one another when measured phase to phase with no load. A significant unbalance may lead to erratic drive operation and should be corrected when discovered.

Output side measurements

On the flip side, a regular True RMS multimeter can't reliably read the output side of a pulse width modulated (pwm) motor drive, because the ASD applies pulse width modulated nonsinusoidal voltage to the motor terminals. A True RMS DMM reads the heating effect of the non-sinusoidal voltage applied to the motor, while the motor controller's output voltage reading only displays the rms value of the fundamental component (typically from 30 Hz to 60 Hz). The causes of this discrepancy are bandwidth and shielding. Many of today's True RMS digital multimeters have bandwidths out to 20 kHz or more, causing them to respond not only to the fundamental component, which is what the motor really responds to, but to all of the high frequency components generated by the pwm drive. And if the DMM isn't shielded for high frequency noise, the drive controller's high noise levels make the measurement discrepancies even more extreme. With the bandwidth and shielding issues combined, many True RMS meters display readings as much as 20 to 30% higher than what the drive controller is indicating. With the incorporated selectable low pass filter, allows troubleshooters to take accurate voltage, current and frequency measurements on the output side of the drive at either the drive itself or the motor terminals. With the filter selected, the readings for both voltage and frequency (motor speed) should agree with the associated drive control display indications, if available. The low pass filter also allows for accurate current measurements when used with Hall-effect type clamps. All of these measurements are especially helpful when taking measurements at the motor location when the drive's displays are not in view.

Taking safe measurements

Before taking any electrical measurements, be sure you understand how to take them safely. No test instrument is completely safe if used improperly, and many test instruments are not appropriate for testing adjustable speed drives. Also make sure to use the appropriate personal protective equipment (PPE) for your specific working environment and measurements. If at all possible, never work alone.

Safety ratings for electrical test equipment

ANSI and the International Electrotechnical Commission (IEC) are the primary independent organizations that define safety standards for test equipment manufacturers. The IEC 61010 second edition standard for test equipment safety states two basic parameters: a voltage rating and a measurement category rating. The voltage rating is the maximum continuous working voltage the instrument is capable of measuring. The category ratings depict the measurement environment expected for a given category. Most three-phase ASD installations would be considered a CAT III measurement environment, with power supplied from either 480V or 600V distribution systems. When using a DMM for measurements on these high energy systems, make sure it's rated at a minimum for CAT III 600V and preferably for CAT IV 600V/CAT III 1000V. The category rating and voltage limit are typically found on the front panel, at the input terminals. Dual-rated CAT IV 600V and CAT III 1000V. Refer to the ABC's of DMM Safety* from Fluke for additional information on category ratings and taking safe measurements.

How to take measurements

Now let's put the multimeter to the test. The measurements in the following procedure are designed to be made on a 480 volt 3 phase drive control at the control panel terminal strips. These procedures would also be valid for lower voltage 3 phase drives powered by either single or 3 phase supply voltages. For these tests the motor is running at 50 Hz.

Input voltage

To measure the ac voltage supply to the input side of the drive at the drive:

  • Select the ac voltage function.
  • Connect the black probe to one of the three phase input terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase input terminals and record the reading.
  • Leaving the black probe on the reference phase now move the red probe to the third phase input and record this reading.
  • Make sure there's no more than a 1% difference between these two readings.

Input current

Measuring the input current generally requires a current clamp accessory. In most cases, either the input current exceeds the maximum current measurable by the current function, or it isn't practical to "break the circuit" to take an in-line series current measurement. Regardless of clamp type, insure that all readings are within 10% of each other for proper balance.

Transformer type clamp (i200, 80i-400, 80i-600A)

  • Connect the clamp to the common and 400 mA input jacks.
  • Select the mA/A AC function.
  • Place the clamp around each of the input supply phase cables in succession, recording each of the readings as they are taken. Since these clamps output one milliamp per amp, the milliamp readings shown on the display are the actual phase current readings in amps.

Hall Effect type (AC/DC) clamp (i410,i-1010)

  • Connect the clamp to the common and V/W input jacks.
  • Select the AC voltage function.
  • Press the yellow button to enable the low pass filter. This allows the meter to reject all of the high frequency noise generated by the drive controller. Once the low pass filter is enabled, the meter will be in the 600 mV manual range mode.
  • Place the clamp around each of the input supply phase cables in succession, recording each of the readings as they are taken. Since these clamps output one millivolt per amp, the millivolt readings shown on the display are the actual phase current readings in amps.

Figure 1. Output voltage reading without using the low pass filter.


Figure 2. Output voltage reading with low pass filter enabled.

Output voltage

To measure the AC output voltage at either the drive or the motor terminals:

  • Plug the black test lead into the common jack and the red test lead into the V/W jack.
  • Select the AC voltage function.
  • Connect the black probe to one of the three phase output voltage or motor terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase output voltage or motor terminals.
  • Press the yellow button to enable the low pass filter. Now record the reading.
  • Leaving the black probe on the reference phase, now move the red probe to the third phase output voltage or motor terminal and record this reading.
  • Make sure that there's no more than a 1% difference between these two readings (see Figure 2). The readings should also agree with the controller display, panel if available.
  • If the low pass filter isn't enabled, the output voltage readings may be 10 to 30% higher, as on a regular DMM (see Figure 1).

Figure 3. Output frequency (motor speed) without the low pass filter.


Figure 4. Output frequency (motor speed) using the low pass filter.

Motor speed (Output frequency using voltage as a reference)

To determine motor speed, simply take a frequency measurement while using the low pass filter. The measurement can be made between any two of the phase voltage or motor terminals.

  • Plug the black test lead into the common jack and the red test lead into the V/W jack.
  • Select the ac voltage function.
  • Connect the black probe to one of the three phase output voltage or motor terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase output voltage or motor terminals.
  • Press the yellow button to enable the low pass filter.
  • Press the Hz button. The displayed reading in hertz will be the motor speed (see Figure 3). This measurement couldn't be made successfully without the low pass filter (see Figure 4).

Output current

TAs with input current, measuring the output current generally requires a current clamp accessory. Once again, regardless of clamp type, insure that all readings are within 10% of each other for proper balance.

Transformer type clamp (i200, 80i-400, 80i-600A)

  • Connect the clamp to the common and 400 mA input jacks.
  • Select the mA/A ac function.
  • Place the clamp around each of the output phase cables in succession, recording each of the readings as they're taken. Since these clamps output 1 milliamp per amp, the milliamp readings shown on the display are the actual phase current readings in amps.

Figure 5. Output current reading without using the low pass filter.


Figure 6. Output current reading with low pass filter enabled.

Hall Effect type (AC/DC) clamp (i410,i-1010)

  • Connect the clamp to the common and V/W input jacks.
  • Select the ac voltage function.
  • Press the yellow button to enable the low pass filter. This allows the meter to reject all of the high frequency noise generated by the drive controller. Once the low pass filter is turned on, the meter will be in the 600 mV manual range mode.
  • Place the clamp around each of the output phase cables in succession, recording each of the readings as they are taken (see Figure 6). Since these clamps output 1 millivolt per amp, the millivolt readings shown on the 87-V display are the actual phase current readings in amps. This measurement would not be possible without the low pass filter (see Figure 5).

Motor speed (Output frequency using current as a reference)

For motors that pull at least 20 amps of running current, motor speed can be determined by taking a frequency measurement with current clamps. Until now, noise issues have prevented accurate readings using hall effect type clamps. Here's how the low pass filter makes it possible.

Motor speed using a Hall Effect type (AC/DC) clamp (i410,i-1010)

  • Connect the clamp to the common and V/W input jacks.
  • Select the ac voltage function.
  • Press the yellow button to enable the low pass filter. This allows the meter to reject all of the high frequency noise generated by the drive controller. Once the low pass filter has been turned on, the meter will be in the 600 mV manual range mode.
  • Place the clamp around one of the output phase cables. Verify that the multimeter is reading a current of at least 20 amps (20 mV in the display).
  • Press the Hz button. The readings now display the motor speed as a frequency measurement.

Motor speed using a transformer type clamp (i200, 80i-400, 80i-600A)

  • Connect the clamp to the common and 400 mA input jacks.
  • Select the mA/A AC function.
  • Place the clamp around one of the output phase cables. Verify that the multimeter is reading a current of at least 20 amps (20mA in the display).
  • Press the Hz button. The readings now display the motor speed as a frequency measurement.

DC Bus measurements

A healthy dc bus is a must for a properly operating motor drive. If the bus voltage is incorrect or unstable, the converter diodes or capacitors may be starting to fail. The DC bus voltage should be approximately 1.414 times the phase to phase input voltage. For a 480 volt input, the DC bus should be approximately 679 VDC. The DC bus is typically labeled as DC+, DC- or B+, Bon the drive terminal strip. To measure the DC bus voltage:

  • Select the dc voltage function.
  • Connect the black probe to either the DC- or B- terminal.
  • Connect the red probe to the DC+ or B+ terminal. The bus voltage should agree with the example mentioned above and be relatively stable. To check the amount of ac ripple on the bus, switch the 7V's function switch to the vac function. Some small drives don't allow external access to the DC bus measurement without disassembling the drive. If you can't access the DC bus, use the peak min max function on the multimeter to measure the dc bus voltage via the output voltage signal.
  • Plug the black test lead into the common jack and the red test lead into the V/½ jack.
  • Select the AC voltage function.
  • Connect the black probe to one of the three phase output voltage or motor terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase output voltage or motor terminals.
  • Press the MIN MAX button.
  • Press the (Peak min max) button.
  • The displayed reading in Peak min max will be the DC bus voltage.

Click on a category to view a selection of compatible accessories with the Fluke 107 ESP Palm-Sized Digital Multimeter, CAT III, 600 V.

Fluke 80T-150U Universal Temperature Probe 80T-150UA
A self-contained temperature-to-voltage converter, this probe is designed to provide a direct temperature reading when it is connected to any high impedance DMM capable of 1 mV resolution, and at least a 300-count full-scale readout capability.




Fluke TL26A 5-Way Test Lead Set, 60" TL26A
Provides five different ways to connect to terminals, this test lead set features 60" (1.5 m), silicone-insulated leads, useable from -112 to 158°F (-80 to 70°C), and is rated for 30 V, 8 A.




Fluke TL27 Heavy Duty Test Lead Set TL27
DMM test leads (red, black) with safety shrouded, standard diameter banana plugs.




Fluke TL28A Automotive Test Lead Set TL28A
Features flexible silicone insulated leads are heat and cold resistant and are Cat I 30 V, 10 A rated.




Fluke TL71 Premium Right Angle Test Lead Set TL71
Comfort grip probes with flexible silicone-insulated, right-angle test leads. They are heat and cold resistant, with a safety rating of CAT II 1000 V, 10 A.




Fluke TL75 Hard Point™ Test Lead Set TL75
Offers the convenience of a test lead and probe-in-one unit with a variety of connections. One pair (red, black) comfort grip probe with PVC insulated right angel shrouded 0.16" (4 mm) banana plugs.




Fluke TL76 Test Lead Set TL76
Pair of red, black silicone test leads with right angle shrouded 0.16" (4 mm) banana plugs.




Fluke TP1 Slim Reach Test Probe Set TP1
Features hard stainless steel probe tips and one pair of slender probe bodies, which is ideal for probing closely spaced or recessed terminals. Additionally, it comes in a flat blade design to hold securely in blade type electrical wall sockets.




Fluke TP220 SureGrip™ Industrial Test Probes TP220
For use with the TL222 and TL224. Additionally, these industrial test probes feature 0.5" (12 mm) stainless steel tips that provide reliable contact and flexible finger barrier, which improves grip.




Fluke TP4 Slim Reach Test Probe Set TP4
Features hard stainless steel probe tips, this slim reach test probes set is designed to fit securely into IEC electrical wall outlets.








Fluke TL238 SureGrip™ Test Lead Set for High Energy Environments TL238
Designed for high energy environments, this kit comes equipped with the TP238, TP280, and TL224.




Fluke TL224 SureGrip™ Silicone Insulated Test Leads TL224
These insulated test leads provide the convenience and variety for test lead configurations by attaching clips, hooks and grabbers as needed.




Fluke AC220 SureGrip™ Alligator Clips AC220
Designed to improve steadiness with rubber overmolded surfaces and finger-hugging curves. For use with TL222 and TL224 test leads.




Fluke AC280 SureGrip™ Hook Clips AC280
Designed to improve steadiness in slippery hands, and is for use with TL222 and TL224 test leads. Rubber over-molded surfaces and finger-hugging curves give a comfortable, reliable grip so you can focus on making an accurate measurement.




Fluke AC283A SureGrip™ Pincer Clips AC283A
Designed to improve steadiness in slippery hands, and is for use with TL222 and TL224 test leads. Rubber over-molded surfaces and finger-hugging curves give a comfortable, reliable grip so you can focus on making an accurate measurement.




Fluke AC285 SureGrip™ Alligator Clips AC285
Designed to improve steadiness in slippery hands, and is for use with TL222 and TL224 test leads. Rubber over-molded surfaces and finger-hugging curves give a comfortable, reliable grip so you can focus on making an accurate measurement.




Fluke AC87 Heavy Duty Bus Bar Clip Set AC87
Comes equipped with one pair (red, black) of flat, right angle design for connecting to bus bars, and CAT III 600 V, 5 A rating, CSA listed. Adjustable collar provides two ranges of jaw openings up to 1.81" (30 mm).




Fluke AC89 Heavy Duty Insulation Piercing Test Clip AC89
Single probe pierces 0.01 to 0.6" (0.25 to 1.5 mm) insulated wire with a small pin allows self-healing of the insulation, and 1000 V, 10 A maximum.




Fluke TL220 Suregrip Industrial Test Lead Set TL220
Includes the Fluke AC220, Fluke TP220, and Fluke TL224.




Fluke TL221 SureGrip™ Test Lead Extension Set TL221
Features over molded surfaces and finger-hugging curves for a more comfortable and reliable grip, this test lead extension set is designed to improve steadiness in slippery hands.




Fluke TL223 SureGrip™ Electrical Test Lead Set TL223
Designed for your comfort so you can focus on taking accurate measurements, this handy all-in-one kit comes equipped with a SureGrip alligator clip set, slim-reach test probes (flat bladed), and SureGrip silicone test lead set.




Fluke Camo-C25 Camouflage Carrying Case for Fluke Multimeters CAMO-C25
Zippered carrying case with padding and inside pocket. Dimensions: 218 x 128 x 64mm (8.6 x 5 x 2.52").




Fluke CAMO-C25/BD Camouflage Soft Case CAMO-C25/BD
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features trendy blue digital camouflage fabric design and comes with a one-year warranty.




Fluke CAMO-C25/FO Camouflage Soft Case CAMO-C25/FO
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features trendy forest camouflage fabric design and comes with a one-year warranty.




Fluke CAMO-C25/WD Camouflage Soft Case CAMO-C25/WD
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features trendy woodland digital camouflage fabric design and comes with a one-year warranty.




Fluke C100 Hard Sided Carrying Case C100
Carrying Case for all handheld multimeters.




Fluke C25 Large Soft Carrying Case for Digital Multimeters C25
Featuring a durable, zippered carrying case with padding and inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters.





Fluke CAMO-C25/WL Camouflage Soft Case CAMO-C25/WL
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features a trendy woodland camouflage fabric design and comes with a one-year warranty.




Fluke 80TK Thermocouple Module 80TK
Thermocouple converter that accepts the output of any K-type thermocouple and converts it to 1 mV per degree (Celsius or Fahrenheit).




Fluke PV350 Pressure Vacuum Module PV350
Compatible with a variety of digital multimeters, this pressure vacuum module measures vacuum to 76 cm Hg and pressure to 3447 kPa (500 psig).




Customer Reviews for the Fluke 107 ESP

Ask a question about Fluke 107 ESP Palm-Sized Digital Multimeter, CAT III, 600 V

Fluke 107 ESP Offers

Features

  • Enabled with current and voltage measurement functions, in a compact size
  • Measures resistance & continuity to check for broken wires
  • Data hold and backlit display to keep you working safe and fast
  • Ergonomic and rugged
  • Comfortable grip, only weighs 200g and easy to carry
  • Rugged enclosure and 3.3' (1 m) drop test
  • Full-parameter automatic range test, which is convenient and quick to test; at the same time, it reduces the number of rotations of the wave plate and prolongs the life of the instrument
  • 6000-word large screen LCD backlight display
  • Battery powered, automatic power save mode
  • Data retention feature makes it easier to read measurement results
  • Compliant with IEC61010-1 CATIII 600V overvoltage protection safety standard

Complete test functions

  • AC and DC voltage measurement
  • AC and DC current measurement
  • Resistance measurement
  • Capacitance measurement
  • Diode measurement
  • Frequency and duty cycle test and other functions to meet basic electrical maintenance, electrical measurement, and electronic measurement applications

Applications

  • Basic electrical maintenance
  • Electrical measurement
  • Electronic measurement

Fluke 107 ESP Specifications

Electrical Specifications
AC Volts (40 to 500 Hz) Range: 6, 60, 600 V
Resolution: 0.001, 0.01, 0.1 V
Accuracy: 1.0% + 3
DC Volts Range: 6, 60, 600 V
Resolution: 0.001, 0.01, 0.1 V
Accuracy: 0.5% + 3
AC Millivolts Range: 600 mV
Resolution: 0.1 mV
Accuracy: 3.0% + 3
Diode Test Range: 2 V
Resolution: 0.001 V
Accuracy: 10%
Resistance (Ohms) Range: 400 Ω, 4, 40, 400 kΩ, 4, 40 MΩ
Resolution: 0.1 Ω, 0.001, 0.01, 0.1 kΩ, 0.001, 0.01 MΩ
Accuracy: 0.5% + 3, 0.5% + 3, 0.5% + 3, 0.5% + 3, 0.5% + 3, 1.5% + 3
Capacitance Range: 50, 500 nF, 5, 50, 500, 1000 µF
Resolution: 0.01, 0.1 nF, 0.001, 0.01, 0.1, 1µF
Accuracy: 2% + 5, 2% + 5, 5% + 5, 5% + 5, 5% + 5, 5% + 5
Frequency (10 Hz to 100 kHz) Range: 50, 500 Hz, 5, 50, 100 kHz
Resolution: 0.01, 0.1 Hz, 0.001, 0.01, 0.1 kHz
Accuracy: 0.1% + 3
Duty Cycle Range: 0.1 to 99.9%
Resolution: 0.1%
Accuracy: 1% typical
AC Current (40 to 200 Hz) Range: 4, 10 A
Resolution: 0.001, 0.01 A
Accuracy: 1.5% + 3
DC Current (40 to 200 Hz) Range: 4, 10 A
Resolution: 0.001, 0.01 A
Accuracy: 1.5% + 3
Backlight Accuracy: Yes
AC Volts Overload protection: 600 V
Input impedance (nominal): >10 MΩ, <100 pF
Common mode rejection ratio: >60 dB at DC, 50 or 60 Hz
AC Millivolts Overload protection: 600 mV
Input impedance (nominal): >1 M, <100 pF
Common mode rejection ratio: >80 dB at 50 or 60 Hz
DC Volts Overload protection: 600 V
Input impedance (nominal): >10 MΩ, <100 pF
Common mode rejection ratio: >100 dB at DC, 50 or 60 Hz
Normal mode rejection ratio: >45 dB at 50 or 60 Hz
General Specifications
Maximum Voltage Between Any Terminal and Earth Ground 600 V
Display (LCD) 6000 counts, updates 3/sec
Battery Type 2 x AAA Batteries, NEDA 24A, IEC LR03
Battery Life 200 hours minimum
Temperature Operating: 32 to 104°F (0 to 40°C)
Storage: -22 to 140°F (-30 to 60°C)
Operating Humidity: Non-condensing when <50°F (<10°C) ≤90% at 50 to 86°F (10 to 30°C)
≤75% at 50 to 104°F (30 to 40°C)
Operating Humidity, 40 MΩ Range ≤80% at 50 to 86°F (10 to 30°C)
≤70% at 50 to 104°F (30 to 40°C)
Altitude Operating: 6561.7' (2000 m)
Storage: 39,370.1' (12,000 m)
Temperature Coefficient 0.1 X (specified accuracy)/°C (<18 or >28°C)
Fuse Protection for Current Inputs 11 A, 1000 V fast fuse
Dimensions 5.6 x 2.7 x 1.1" (142 x 69 x 28 mm)
Weight 0.44 lb (200 g)
IP Rating IEC 60529: IP40
Safety IEC 61010-1: 600 V CAT III, Pollution Degree 2
Electromagnetic Environment IEC 61326-1: portable
Click here for complete specifications on the Fluke 107 ESP

What's included with the Fluke 107 ESP

  • Multimeter
  • Test Lead Set
  • Magnetic Multi-Purpose Lanyard
  • 2 x AAA Batteries (Installed)

Multimeter measurements on adjustable speed drives

In the past, motor repair meant dealing with traditional three-phase motor failures that were largely the result of water, dust, grease, failed bearings, misaligned motor shafts, or just plain old age. But motor repair has changed in a big way with the introduction of electronically controlled motors, more commonly referred to as adjustable speed drives (ASDs). These drives present a unique set of measurement problems that can vex the most seasoned pro. Thanks to new technology, now for the first time you can take accurate electrical measurements with a DMM during the installation and maintenance of a drive and diagnose bad components and other conditions that may lead to premature failure.

Troubleshooting philosophy

Technicians use many different methods to troubleshoot an electrical circuit, and a good troubleshooter will always find the problem - eventually. The trick is tracking it down quickly and keeping downtime to a minimum. The most efficient troubleshooting procedure begins at the motor and then works systematically back to the electrical source, looking for the most obvious problems first. A lot of time and money can be wasted replacing perfectly good parts when the problem is simply a loose connection. As you go, take care to take accurate measurements. Nobody takes inaccurate measurements on purpose, but it's easy to do, especially when working in a high energy, noisy environment like an ASD. Likewise, choosing the right test tools for troubleshooting the drive, the motor, and the connections is of utmost importance. This is especially true when taking voltage, frequency and current measurements on the output side of the motor drive. But until now, there hasn't been a digital multimeter on the market able to accurately measure ASDs. Incorporates a selectable low pass filter* that allows for accurate drive output measurements that agree with the motor drive controller display indicator. Now, technicians won't have to guess whether the drive is operating correctly and delivering the correct voltage, current or frequency for a given control setting.

Drive measurements

Input side measurements

Any good quality True RMS multimeter can verify proper input power to an ASD. The input voltage readings should be within 1% of one another when measured phase to phase with no load. A significant unbalance may lead to erratic drive operation and should be corrected when discovered.

Output side measurements

On the flip side, a regular True RMS multimeter can't reliably read the output side of a pulse width modulated (pwm) motor drive, because the ASD applies pulse width modulated nonsinusoidal voltage to the motor terminals. A True RMS DMM reads the heating effect of the non-sinusoidal voltage applied to the motor, while the motor controller's output voltage reading only displays the rms value of the fundamental component (typically from 30 Hz to 60 Hz). The causes of this discrepancy are bandwidth and shielding. Many of today's True RMS digital multimeters have bandwidths out to 20 kHz or more, causing them to respond not only to the fundamental component, which is what the motor really responds to, but to all of the high frequency components generated by the pwm drive. And if the DMM isn't shielded for high frequency noise, the drive controller's high noise levels make the measurement discrepancies even more extreme. With the bandwidth and shielding issues combined, many True RMS meters display readings as much as 20 to 30% higher than what the drive controller is indicating. With the incorporated selectable low pass filter, allows troubleshooters to take accurate voltage, current and frequency measurements on the output side of the drive at either the drive itself or the motor terminals. With the filter selected, the readings for both voltage and frequency (motor speed) should agree with the associated drive control display indications, if available. The low pass filter also allows for accurate current measurements when used with Hall-effect type clamps. All of these measurements are especially helpful when taking measurements at the motor location when the drive's displays are not in view.

Taking safe measurements

Before taking any electrical measurements, be sure you understand how to take them safely. No test instrument is completely safe if used improperly, and many test instruments are not appropriate for testing adjustable speed drives. Also make sure to use the appropriate personal protective equipment (PPE) for your specific working environment and measurements. If at all possible, never work alone.

Safety ratings for electrical test equipment

ANSI and the International Electrotechnical Commission (IEC) are the primary independent organizations that define safety standards for test equipment manufacturers. The IEC 61010 second edition standard for test equipment safety states two basic parameters: a voltage rating and a measurement category rating. The voltage rating is the maximum continuous working voltage the instrument is capable of measuring. The category ratings depict the measurement environment expected for a given category. Most three-phase ASD installations would be considered a CAT III measurement environment, with power supplied from either 480V or 600V distribution systems. When using a DMM for measurements on these high energy systems, make sure it's rated at a minimum for CAT III 600V and preferably for CAT IV 600V/CAT III 1000V. The category rating and voltage limit are typically found on the front panel, at the input terminals. Dual-rated CAT IV 600V and CAT III 1000V. Refer to the ABC's of DMM Safety* from Fluke for additional information on category ratings and taking safe measurements.

How to take measurements

Now let's put the multimeter to the test. The measurements in the following procedure are designed to be made on a 480 volt 3 phase drive control at the control panel terminal strips. These procedures would also be valid for lower voltage 3 phase drives powered by either single or 3 phase supply voltages. For these tests the motor is running at 50 Hz.

Input voltage

To measure the ac voltage supply to the input side of the drive at the drive:

  • Select the ac voltage function.
  • Connect the black probe to one of the three phase input terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase input terminals and record the reading.
  • Leaving the black probe on the reference phase now move the red probe to the third phase input and record this reading.
  • Make sure there's no more than a 1% difference between these two readings.

Input current

Measuring the input current generally requires a current clamp accessory. In most cases, either the input current exceeds the maximum current measurable by the current function, or it isn't practical to "break the circuit" to take an in-line series current measurement. Regardless of clamp type, insure that all readings are within 10% of each other for proper balance.

Transformer type clamp (i200, 80i-400, 80i-600A)

  • Connect the clamp to the common and 400 mA input jacks.
  • Select the mA/A AC function.
  • Place the clamp around each of the input supply phase cables in succession, recording each of the readings as they are taken. Since these clamps output one milliamp per amp, the milliamp readings shown on the display are the actual phase current readings in amps.

Hall Effect type (AC/DC) clamp (i410,i-1010)

  • Connect the clamp to the common and V/W input jacks.
  • Select the AC voltage function.
  • Press the yellow button to enable the low pass filter. This allows the meter to reject all of the high frequency noise generated by the drive controller. Once the low pass filter is enabled, the meter will be in the 600 mV manual range mode.
  • Place the clamp around each of the input supply phase cables in succession, recording each of the readings as they are taken. Since these clamps output one millivolt per amp, the millivolt readings shown on the display are the actual phase current readings in amps.

Figure 1. Output voltage reading without using the low pass filter.


Figure 2. Output voltage reading with low pass filter enabled.

Output voltage

To measure the AC output voltage at either the drive or the motor terminals:

  • Plug the black test lead into the common jack and the red test lead into the V/W jack.
  • Select the AC voltage function.
  • Connect the black probe to one of the three phase output voltage or motor terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase output voltage or motor terminals.
  • Press the yellow button to enable the low pass filter. Now record the reading.
  • Leaving the black probe on the reference phase, now move the red probe to the third phase output voltage or motor terminal and record this reading.
  • Make sure that there's no more than a 1% difference between these two readings (see Figure 2). The readings should also agree with the controller display, panel if available.
  • If the low pass filter isn't enabled, the output voltage readings may be 10 to 30% higher, as on a regular DMM (see Figure 1).

Figure 3. Output frequency (motor speed) without the low pass filter.


Figure 4. Output frequency (motor speed) using the low pass filter.

Motor speed (Output frequency using voltage as a reference)

To determine motor speed, simply take a frequency measurement while using the low pass filter. The measurement can be made between any two of the phase voltage or motor terminals.

  • Plug the black test lead into the common jack and the red test lead into the V/W jack.
  • Select the ac voltage function.
  • Connect the black probe to one of the three phase output voltage or motor terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase output voltage or motor terminals.
  • Press the yellow button to enable the low pass filter.
  • Press the Hz button. The displayed reading in hertz will be the motor speed (see Figure 3). This measurement couldn't be made successfully without the low pass filter (see Figure 4).

Output current

TAs with input current, measuring the output current generally requires a current clamp accessory. Once again, regardless of clamp type, insure that all readings are within 10% of each other for proper balance.

Transformer type clamp (i200, 80i-400, 80i-600A)

  • Connect the clamp to the common and 400 mA input jacks.
  • Select the mA/A ac function.
  • Place the clamp around each of the output phase cables in succession, recording each of the readings as they're taken. Since these clamps output 1 milliamp per amp, the milliamp readings shown on the display are the actual phase current readings in amps.

Figure 5. Output current reading without using the low pass filter.


Figure 6. Output current reading with low pass filter enabled.

Hall Effect type (AC/DC) clamp (i410,i-1010)

  • Connect the clamp to the common and V/W input jacks.
  • Select the ac voltage function.
  • Press the yellow button to enable the low pass filter. This allows the meter to reject all of the high frequency noise generated by the drive controller. Once the low pass filter is turned on, the meter will be in the 600 mV manual range mode.
  • Place the clamp around each of the output phase cables in succession, recording each of the readings as they are taken (see Figure 6). Since these clamps output 1 millivolt per amp, the millivolt readings shown on the 87-V display are the actual phase current readings in amps. This measurement would not be possible without the low pass filter (see Figure 5).

Motor speed (Output frequency using current as a reference)

For motors that pull at least 20 amps of running current, motor speed can be determined by taking a frequency measurement with current clamps. Until now, noise issues have prevented accurate readings using hall effect type clamps. Here's how the low pass filter makes it possible.

Motor speed using a Hall Effect type (AC/DC) clamp (i410,i-1010)

  • Connect the clamp to the common and V/W input jacks.
  • Select the ac voltage function.
  • Press the yellow button to enable the low pass filter. This allows the meter to reject all of the high frequency noise generated by the drive controller. Once the low pass filter has been turned on, the meter will be in the 600 mV manual range mode.
  • Place the clamp around one of the output phase cables. Verify that the multimeter is reading a current of at least 20 amps (20 mV in the display).
  • Press the Hz button. The readings now display the motor speed as a frequency measurement.

Motor speed using a transformer type clamp (i200, 80i-400, 80i-600A)

  • Connect the clamp to the common and 400 mA input jacks.
  • Select the mA/A AC function.
  • Place the clamp around one of the output phase cables. Verify that the multimeter is reading a current of at least 20 amps (20mA in the display).
  • Press the Hz button. The readings now display the motor speed as a frequency measurement.

DC Bus measurements

A healthy dc bus is a must for a properly operating motor drive. If the bus voltage is incorrect or unstable, the converter diodes or capacitors may be starting to fail. The DC bus voltage should be approximately 1.414 times the phase to phase input voltage. For a 480 volt input, the DC bus should be approximately 679 VDC. The DC bus is typically labeled as DC+, DC- or B+, Bon the drive terminal strip. To measure the DC bus voltage:

  • Select the dc voltage function.
  • Connect the black probe to either the DC- or B- terminal.
  • Connect the red probe to the DC+ or B+ terminal. The bus voltage should agree with the example mentioned above and be relatively stable. To check the amount of ac ripple on the bus, switch the 7V's function switch to the vac function. Some small drives don't allow external access to the DC bus measurement without disassembling the drive. If you can't access the DC bus, use the peak min max function on the multimeter to measure the dc bus voltage via the output voltage signal.
  • Plug the black test lead into the common jack and the red test lead into the V/½ jack.
  • Select the AC voltage function.
  • Connect the black probe to one of the three phase output voltage or motor terminals. This will be the reference phase.
  • Connect the red probe to one of the other two phase output voltage or motor terminals.
  • Press the MIN MAX button.
  • Press the (Peak min max) button.
  • The displayed reading in Peak min max will be the DC bus voltage.

Click on a category to view a selection of compatible accessories with the Fluke 107 ESP Palm-Sized Digital Multimeter, CAT III, 600 V.

Fluke 80T-150U Universal Temperature Probe 80T-150UA
A self-contained temperature-to-voltage converter, this probe is designed to provide a direct temperature reading when it is connected to any high impedance DMM capable of 1 mV resolution, and at least a 300-count full-scale readout capability.




Fluke TL26A 5-Way Test Lead Set, 60" TL26A
Provides five different ways to connect to terminals, this test lead set features 60" (1.5 m), silicone-insulated leads, useable from -112 to 158°F (-80 to 70°C), and is rated for 30 V, 8 A.




Fluke TL27 Heavy Duty Test Lead Set TL27
DMM test leads (red, black) with safety shrouded, standard diameter banana plugs.




Fluke TL28A Automotive Test Lead Set TL28A
Features flexible silicone insulated leads are heat and cold resistant and are Cat I 30 V, 10 A rated.




Fluke TL71 Premium Right Angle Test Lead Set TL71
Comfort grip probes with flexible silicone-insulated, right-angle test leads. They are heat and cold resistant, with a safety rating of CAT II 1000 V, 10 A.




Fluke TL75 Hard Point™ Test Lead Set TL75
Offers the convenience of a test lead and probe-in-one unit with a variety of connections. One pair (red, black) comfort grip probe with PVC insulated right angel shrouded 0.16" (4 mm) banana plugs.




Fluke TL76 Test Lead Set TL76
Pair of red, black silicone test leads with right angle shrouded 0.16" (4 mm) banana plugs.




Fluke TP1 Slim Reach Test Probe Set TP1
Features hard stainless steel probe tips and one pair of slender probe bodies, which is ideal for probing closely spaced or recessed terminals. Additionally, it comes in a flat blade design to hold securely in blade type electrical wall sockets.




Fluke TP220 SureGrip™ Industrial Test Probes TP220
For use with the TL222 and TL224. Additionally, these industrial test probes feature 0.5" (12 mm) stainless steel tips that provide reliable contact and flexible finger barrier, which improves grip.




Fluke TP4 Slim Reach Test Probe Set TP4
Features hard stainless steel probe tips, this slim reach test probes set is designed to fit securely into IEC electrical wall outlets.








Fluke TL238 SureGrip™ Test Lead Set for High Energy Environments TL238
Designed for high energy environments, this kit comes equipped with the TP238, TP280, and TL224.




Fluke TL224 SureGrip™ Silicone Insulated Test Leads TL224
These insulated test leads provide the convenience and variety for test lead configurations by attaching clips, hooks and grabbers as needed.




Fluke AC220 SureGrip™ Alligator Clips AC220
Designed to improve steadiness with rubber overmolded surfaces and finger-hugging curves. For use with TL222 and TL224 test leads.




Fluke AC280 SureGrip™ Hook Clips AC280
Designed to improve steadiness in slippery hands, and is for use with TL222 and TL224 test leads. Rubber over-molded surfaces and finger-hugging curves give a comfortable, reliable grip so you can focus on making an accurate measurement.




Fluke AC283A SureGrip™ Pincer Clips AC283A
Designed to improve steadiness in slippery hands, and is for use with TL222 and TL224 test leads. Rubber over-molded surfaces and finger-hugging curves give a comfortable, reliable grip so you can focus on making an accurate measurement.




Fluke AC285 SureGrip™ Alligator Clips AC285
Designed to improve steadiness in slippery hands, and is for use with TL222 and TL224 test leads. Rubber over-molded surfaces and finger-hugging curves give a comfortable, reliable grip so you can focus on making an accurate measurement.




Fluke AC87 Heavy Duty Bus Bar Clip Set AC87
Comes equipped with one pair (red, black) of flat, right angle design for connecting to bus bars, and CAT III 600 V, 5 A rating, CSA listed. Adjustable collar provides two ranges of jaw openings up to 1.81" (30 mm).




Fluke AC89 Heavy Duty Insulation Piercing Test Clip AC89
Single probe pierces 0.01 to 0.6" (0.25 to 1.5 mm) insulated wire with a small pin allows self-healing of the insulation, and 1000 V, 10 A maximum.




Fluke TL220 Suregrip Industrial Test Lead Set TL220
Includes the Fluke AC220, Fluke TP220, and Fluke TL224.




Fluke TL221 SureGrip™ Test Lead Extension Set TL221
Features over molded surfaces and finger-hugging curves for a more comfortable and reliable grip, this test lead extension set is designed to improve steadiness in slippery hands.




Fluke TL223 SureGrip™ Electrical Test Lead Set TL223
Designed for your comfort so you can focus on taking accurate measurements, this handy all-in-one kit comes equipped with a SureGrip alligator clip set, slim-reach test probes (flat bladed), and SureGrip silicone test lead set.




Fluke Camo-C25 Camouflage Carrying Case for Fluke Multimeters CAMO-C25
Zippered carrying case with padding and inside pocket. Dimensions: 218 x 128 x 64mm (8.6 x 5 x 2.52").




Fluke CAMO-C25/BD Camouflage Soft Case CAMO-C25/BD
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features trendy blue digital camouflage fabric design and comes with a one-year warranty.




Fluke CAMO-C25/FO Camouflage Soft Case CAMO-C25/FO
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features trendy forest camouflage fabric design and comes with a one-year warranty.




Fluke CAMO-C25/WD Camouflage Soft Case CAMO-C25/WD
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features trendy woodland digital camouflage fabric design and comes with a one-year warranty.




Fluke C100 Hard Sided Carrying Case C100
Carrying Case for all handheld multimeters.




Fluke C25 Large Soft Carrying Case for Digital Multimeters C25
Featuring a durable, zippered carrying case with padding and inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters.





Fluke CAMO-C25/WL Camouflage Soft Case CAMO-C25/WL
Sport the right case for your Fluke tools. The camouflage carrying case is a durable, zippered carrying case with padding, inside pocket, and high quality polyester exterior. It includes a convenient hand strap and carries most of Fluke's popular digital multimeters, clamp meters, insulation testers, and more. It features a trendy woodland camouflage fabric design and comes with a one-year warranty.




Fluke 80TK Thermocouple Module 80TK
Thermocouple converter that accepts the output of any K-type thermocouple and converts it to 1 mV per degree (Celsius or Fahrenheit).




Fluke PV350 Pressure Vacuum Module PV350
Compatible with a variety of digital multimeters, this pressure vacuum module measures vacuum to 76 cm Hg and pressure to 3447 kPa (500 psig).




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