1. Plis paseview
The Fluke 77-4 Digital Multimeter is a robust and reliable tool designed for industrial electrical troubleshooting. It offers essential measurement capabilities with enhanced safety features, including a CAT III 1000V rating. This manual provides instructions for safe and effective use, setup, operation, and maintenance of your Fluke 77-4 multimeter.
2. Enfòmasyon sou Sekirite
Always adhere to safety precautions when using any electrical test equipment. Failure to do so may result in injury or damage to the multimeter or equipment under test.
- Rated for CAT III 1000V: This multimeter is designed for measurements in distribution-level electrical installations, including main feeders and branch circuits. Do not exceed the specified voltage evalyasyon.
- Inspect Test Leads: Before each use, inspect test leads for damaged insulation or exposed metal. Replace damaged leads immediately.
- Pa opere nan kondisyon mouye: Avoid using the multimeter in damp oswa anviwònman mouye.
- Use Proper Terminals: Always connect test leads to the correct input terminals for the desired measurement.
- Tcheke Fusibles: Ensure fuses are correctly rated and installed before measuring current.
- Izole pouvwa: Whenever possible, de-energize circuits before making connections.
3. Pwodwi Features
The Fluke 77-4 Multimeter includes the following key features:
- Gwo ekspozisyon dijital: Provides clear and easy-to-read measurement results.
- Ekspozisyon ekleraj: Improves visibility in dimly lit environments.
- Min/Max Recording: Captures minimum and maximum readings to detect signal fluctuations.
- Otomatik ak Manyèl Ranging: Allows for automatic range selection or manual override for specific measurement needs.
- Wide Voltage Ranje Mezi: Capable of measuring DC Voltage from 6V to 1000V and AC Voltagsoti nan 600mV rive nan 1000V.
- Endistriyèl klas: Designed for demanding industrial applications.
- Konstriksyon dirab: Manufactured in Taiwan for reliable performance.
4. Konpozan ak Kontwòl
Familiarize yourself with the various parts of your Fluke 77-4 Multimeter:

Figi 1: Devan view of the Fluke 77-4 Digital Multimeter.
Imaj sa a montre devan an view of the Fluke 77-4 Digital Multimeter. The large green backlit LCD shows '1000 V AC' with 'Auto Range' indicated below. Below the display are buttons for HOLD, MINMAX, and RANGE. The central rotary dial is set to the AC Voltage (V~) position. Input jacks for 400mA, 10A, VΩHz, and COM are visible at the bottom.
- Ekspozisyon: Large LCD for showing measurement values, units, and function indicators.
- Bouton ekleraj: Aktive oswa dezaktive ekleraj dèyè ekran an.
- Bouton HOLD: Li bloke lekti aktyèl sou ekran an.
- MINMAX Button: Records the minimum, maximum, and average readings over time.
- Bouton RANGE: Toggles between auto-ranging and manual ranging modes.
- Rotary Function Dial: Selects the desired measurement function (e.g., V AC, V DC, Ohms, Amps).
- Jack Antre:
- VΩHz: Antre pozitif pou volimtagmezi e, rezistans, ak frekans.
- mA: Antre pou miliampere current measurements (fused).
- 10A: Input for high current measurements up to 10 Amperes (fused).
- COM: Antre komen (negatif) pou tout mezi yo.
5. Enstalasyon
5.1. Enstalasyon batri
The Fluke 77-4 is powered by a 9V battery. To install or replace the battery:
- Asire w ke miltimèt la etenn.
- Locate the battery compartment cover on the rear of the multimeter.
- Sèvi ak yon tournevis pou dekole vis(yo) ki kenbe kouvèti a.
- Remove the cover and insert a new 9V battery, observing correct polarity.
- Replace the cover and tighten the screw(s).
5.2. Konekte fil tès yo
Always connect the black test lead to the COM jack. Connect the red test lead to the appropriate input jack for your measurement:
- VΩHz: Pou voltage, resistance, continuity, diode, and frequency measurements.
- mA: For current measurements up to 400mA.
- 10A: For current measurements up to 10A.
6. Operasyon Enstriksyon
Before taking any measurement, ensure the test leads are correctly connected and the function dial is set to the appropriate position.
6.1. Measuring AC/DC Voltage
- Turn the rotary dial to V~ (AC Voltage) or V (DC Voltagak).
- Connect the black test lead to the COM jack and the red test lead to the VΩHz jack.
- Touche sond tès yo sou pwen sikwi kote vol latage se pou mezire.
- Li voltage valè sou ekspozisyon an.
6.2. Measuring Resistance (Ohms)
- Asire w sikwi a pa gen enèji anvan ou mezire rezistans lan.
- Turn the rotary dial to Ω.
- Connect the black test lead to the COM jack and the red test lead to the VΩHz jack.
- Touch the test probes across the component or circuit segment.
- Li valè rezistans nan ekspozisyon an.
6.3. Measuring Current (Amperes)
Atansyon: Current measurements require breaking the circuit and inserting the multimeter in series. Incorrect connection can blow the fuse or damage the meter.
- De-energize kous la.
- Determine the expected current range. For currents up to 400mA, turn the dial to mA and connect the red lead to the mA jack. For currents up to 10A, turn the dial to A and connect the red lead to the 10A jack.
- Konekte plon tès nwa a nan COM Jack la.
- Break the circuit and connect the test probes in series with the load.
- Re-energize sikwi a epi li valè aktyèl la.
- De-energize the circuit before disconnecting the multimeter.
6.4. Using HOLD, MINMAX, and RANGE Functions
- RETE: Peze bouton HOLD la pou bloke lekti aktyèl la sou ekran an. Peze ankò pou lage li.
- MINMAX: Press the MINMAX button to activate recording. The meter will display the maximum, minimum, and average readings sequentially. Press again to cycle through Min, Max, Avg. Hold the button to exit.
- RANGE: In auto-ranging modes, the meter automatically selects the best range. Press RANGE to switch to manual ranging. Each subsequent press will cycle through available ranges. Hold the button to return to auto-ranging.
7. Antretyen
7.1. Netwayaj
Siye ka a ak anonsamp cloth and mild detergent. Do not use abrasives or solvents. Ensure the multimeter is dry before use.
7.2. Ranplasman batri
Refer to Section 5.1 for battery installation instructions. Replace the battery when the low battery indicator appears on the display.
7.3. Ranplasman Fuse
If the multimeter fails to measure current, the fuse may be blown. Refer to the multimeter's internal diagram or contact Fluke support for correct fuse specifications and replacement procedures. Always use fuses with the specified voltage ak evalyasyon aktyèl yo.
NAN. Depanaj
| Pwoblèm | Kòz posib | Solisyon |
|---|---|---|
| Pa gen ekspozisyon oswa ekspozisyon fèb | Batri ki ba oswa mouri | Ranplase batri a 9V. |
| Pa ka mezire kouran an | Blown fuse in current input | Replace the appropriate fuse (mA or 10A). |
| Incorrect or unstable readings | Poor test lead connection, incorrect function selection, or external interference. | Check lead connections, verify function dial setting, move away from strong electromagnetic fields. |
| "OL" (Surcharge) parèt | Measurement exceeds selected range or meter's maximum capability. | Switch to a higher range (if in manual mode) or ensure the measurement is within the meter's specifications. |
9. Espesifikasyon
| Paramèt | Valè |
|---|---|
| Mak | Fluke |
| Nimewo Modèl | 77-4 |
| Kalite Mezi | Multimèt dijital |
| Rating sekirite | CAT III 1000V |
| DC Voltage Range | 6V - 1000V |
| AC Voltage Range | 600mV - 1000V |
| Sous pouvwa | Batri Powered (9V) |
| Koulè | Jòn/Nwa |
| Pwa atik | 2 liv (apeprè 0.91 kg) |
| Min. Operating Voltage | 6 Vòlt (DC) |
| Evalyasyon Tanperati Upper | 122 Degrees Fahrenheit (50 Degrees Celsius) |
| UPC | 095969365239 |
| Manifakti | Fluke |
| Dat Premye Disponib | 10 me 2019 |
10. Enfòmasyon sou Garanti
Specific warranty terms for the Fluke 77-4 Digital Multimeter are typically provided with the product at the time of purchase or can be found on the official Fluke website. Please refer to your product documentation or the manufacturer's website for detailed warranty coverage and registration information.
11. Sipò pou Kliyan
For technical assistance, service, or repair, please contact Fluke customer support. You can find contact information and additional resources on the official Fluke website. When contacting support, please have your product model number (77-4) and serial number (if applicable) ready.
Fluke Websit: www.fluke.com





