1. Información de seguridade
Read this manual thoroughly before using the HIOKI IR4051-10 Digital Insulation Tester and HIOKI 3280-10F AC Clamp Meter. Improper operation can lead to injury or damage to the instruments. Keep this manual in a safe place for future reference.
Precaucións xerais de seguridade
- Always observe local and national safety regulations.
- Do not use the instruments if they appear damaged or are operating abnormally.
- Ensure correct measurement range selection before testing.
- Wear appropriate personal protective equipment (PPE), such as insulated gloves and eye protection.
- Avoid touching live circuits with bare hands or non-insulated parts of the test leads.
- Disconnect power to the circuit before connecting or disconnecting test leads for resistance or continuity measurements.
- Do not exceed the maximum input ratings for each function.
2. Produto rematadoview
This manual covers the operation of two HIOKI electrical measurement instruments: the IR4051-10 Digital Insulation Tester and the 3280-10F AC Clamp Medidor.
2.1 HIOKI IR4051-10 Digital Insulation Tester
The HIOKI IR4051-10 is a 5-range digital insulation resistance tester designed for ease of use and durability. It features stable and high-speed measurements, a comparator function with a 0.8-second response time, and a robust, drop-proof design capable of withstanding a 1-meter fall onto concrete. It includes a high-brightness white LED backlight for improved visibility in dark environments and a test lead with an integrated light. The device also offers a 200mA continuity check function and DC voltage measurement capabilities, making it suitable for various electrical testing applications, including solar power systems and electric vehicles.

Figure 2.1.1: HIOKI IR4051-10 Digital Insulation Tester with test leads.

Figure 2.1.2: HIOKI IR4051-10 Digital Insulation Tester with open case for lead storage.
2.2 HIOKI 3280-10F AC Clamp Contador
The HIOKI 3280-10F is a thin and robust AC clamp meter, an essential tool for electricians. It allows for easy measurement of AC current, AC voltage, DC voltage, resistance, and continuity. Its compact design with a jaw thickness of 9.5mm enables measurements in confined spaces. The meter supports an optional AC flexible current sensor (CT6280) for enhanced versatility and features an expanded operating temperature range for use in diverse environments.

Figure 2.2.1: HIOKI 3280-10F AC Clamp Medidor.

Figure 2.2.2: HIOKI 3280-10F AC Clamp Meter with accessories.
3. Configuración
3.1 HIOKI IR4051-10 Digital Insulation Tester
Instalación de baterías
- Asegúrese de que o instrumento estea apagado.
- Localice o compartimento da batería na parte traseira da unidade.
- Abra a tapa da batería.
- Insert four (4) AA alkaline batteries (LR6), observing correct polarity.
- Pecha a tapa da batería de forma segura.
Conexión de puntas de proba
- Connect the red test lead to the LINE terminal and the black test lead to the EARTH terminal.
- Ensure connections are firm and secure.
3.2 HIOKI 3280-10F AC Clamp Contador
Instalación de baterías
- Asegúrese de que o instrumento estea apagado.
- Localiza o compartimento da batería.
- Abra a tapa da batería.
- Insert one (1) CR2032 coin-type lithium battery, observing correct polarity.
- Pecha a tapa da batería de forma segura.
Conexión de puntas de proba
- Conecte o cable de proba vermello ao terminal VΩ e o cable de proba negro ao terminal COM.
- Ensure connections are firm and secure.
4. Instrucións de funcionamento
4.1 HIOKI IR4051-10 Digital Insulation Tester
Medición de resistencia de illamento
- Turn the rotary switch to the desired insulation resistance voltage (50 V, 125 V, 250 V, 500 V ou 1000 V).
- Conecte os cables de proba ao circuíto probado.
- Press and hold the MEASURE button. The measurement will begin, and the result will be displayed.
- Release the MEASURE button to stop the measurement. The circuit will automatically discharge.
DC Voltage Medición
- Turn the rotary switch to the 'V.' position.
- Conecte os cables de proba a través do voltaxe de CCtage fonte.
- O vol. DCtagMostrarase o valor.
Vol. ACtage Medición
- Turn the rotary switch to the 'V.' position. The meter will automatically detect AC or DC.
- Conecte os cables de proba a través da tensión de CAtage fonte.
- O AC voltagMostrarase o valor.
Low Resistance Measurement (Continuity Check)
- Gire o interruptor rotatorio á posición 'Ω'.
- Connect the test leads to the circuit or component to be checked.
- The resistance value will be displayed. If the resistance is below a certain threshold (e.g., 6Ω), the continuity buzzer will sound.
4.2 HIOKI 3280-10F AC Clamp Contador
Medición de corrente alterna
- Turn the rotary switch to the 'A~' position.
- Abre o clamp jaws and enclose a single conductor. Ensure the jaws are fully closed.
- The AC current value will be displayed.
Vol. ACtage Medición
- Xire o interruptor rotatorio á posición 'V~'.
- Conecte os cables de proba en paralelo á tensión de CAtage fonte.
- O AC voltagMostrarase o valor.
DC Voltage Medición
- Turn the rotary switch to the 'V=' position.
- Conecte os cables de proba en paralelo á tensión de CCtagfonte electrónica, observando a polaridade.
- O vol. DCtagMostrarase o valor.
Medición de resistencia
- Gire o interruptor rotatorio á posición 'Ω'.
- Asegúrate de que o circuíto estea desenergizado.
- Conecte os cables de proba a través do compoñente para medir a resistencia.
- Mostrarase o valor da resistencia.
Comprobación de continuidade
- Gire o interruptor rotatorio á posición 'Ω'.
- Asegúrate de que o circuíto estea desenergizado.
- Conecte os cables de proba a través do circuíto ou compoñente.
- If continuity exists (resistance below threshold), the buzzer will sound.
5. Mantemento
Substitución da batería
Replace batteries when the low battery indicator appears on the display. Refer to the 'Battery Installation' section for specific instructions for each model.
Limpeza
Wipe the instrument with a soft, dry cloth. For stubborn dirt, use a cloth lightly dampened with water and a mild detergent, then wipe dry. Do not use abrasive cleaners or solvents.
Almacenamento
When not in use for extended periods, remove the batteries to prevent leakage and store the instruments in a cool, dry place away from direct sunlight and extreme temperatures.
6 Solución de problemas
Sen Poder
- Comprobe se as baterías están instaladas correctamente e teñen a carga suficiente. Substitúaas se é necesario.
- Ensure the rotary switch is not in the 'OFF' position.
Lecturas incorrectas
- Verifique que estean seleccionadas a función de medición e o rango correctos.
- Asegúrese de que os cables de proba estean conectados correctamente e non estean danados.
- Check for external interference or strong magnetic fields affecting the measurement.
- Para clamp meter, ensure only one conductor is enclosed within the jaws for current measurement.
A pantalla non funciona
- Check battery condition and replace if needed.
- If the issue persists after checking batteries, contact customer support.
7. Especificacións
7.1 HIOKI IR4051-10 Digital Insulation Tester
| Característica | Especificación |
|---|---|
| Rated Measurement Voltage | DC 50V / 125V / 250V / 500V / 1000V |
| Effective Max Display Value | 100 MΩ / 250 MΩ / 500 MΩ / 2000 MΩ / 4000 MΩ |
| Precisión | ± 4% lectura. |
| DC Voltage Medición | 4.2V to 600V (4 ranges), Accuracy: ±1.3%rdg. ±4dgt. |
| Vol. ACtage Medición | 420V / 600V (2 ranges), 50/60 Hz, Accuracy: ±2.3%rdg. ±8dgt. |
| Low Resistance (Continuity) | 10 Ω to 1000 Ω (3 ranges), Basic Accuracy: ±3%rdg. ±2dgt. |
| Response Time (Comparator) | Aprox. 0.8 segundos |
| Proba de caída | 1 metro sobre formigón |
| Fonte de alimentación | AA alkaline batteries (LR6) x 4 |
| Tempo de uso continuo | 20 hours (under specified conditions) |
| Dimensións | 159 W × 177 H × 53 D mm |
| Peso | 600 g (including batteries, excluding test leads) |
| Accesorios incluídos | Test lead L9787, Neck strap, Instruction manual, AA batteries |
7.2 HIOKI 3280-10F AC Clamp Contador
| Característica | Especificación |
|---|---|
| AC Measurement Method | Average value method (MEAN) |
| Measurable Conductor Diameter | φ33mm (Jaw thickness 9.5mm) |
| Vol. máxtage á Terra | Clamp sensor: CAT IV 300V, CAT III 600V; Voltage terminals: CAT III 300V, CAT II 600V |
| Corrente alterna | 42.00A / 420.0A / 1000A (±1.5% rdg. ±5dgt) |
| Vol. ACtage | 4.200V to 600V (4 ranges), Accuracy: ±1.8% rdg. ±7dgt |
| DC Voltage | 420.0mV to 600V (5 ranges), Accuracy: ±1.0% rdg. ±3dgt |
| Resistencia | 420.0Ω to 42.00MΩ (6 ranges), Accuracy: ±2.0% rdg. ±4dgt |
| Comprobación de continuidade | 420.0Ω (Accuracy: ±2.0% rdg. ±4dgt) |
| Temperatura de funcionamento / humidade | -25℃ to 85℃, 80%RH or less (no condensation) |
| Proba de caída | 1 metro sobre formigón |
| Impermeable/polvo | IP40 |
| Fonte de alimentación | CR2032 coin-type lithium battery x 1 |
| Tempo de uso continuo | Aprox. 120 horas |
| Dimensións | 57 W × 175 H × 16 D mm |
| Peso | 100 g |
| Accesorios incluídos | Carrying case 9398, Test lead L9208, Lithium battery CR2032, Instruction manual |
8. Garantía e soporte
Información da garantía
- HIOKI IR4051-10 Digital Insulation Tester: 1-year accuracy guarantee period.
- HIOKI 3280-10F AC Clamp Contador: 3-year product warranty period, with a 1-year accuracy guarantee period after adjustment.
Please retain your purchase receipt as proof of purchase for warranty claims. The warranty covers defects in materials and workmanship under normal use.
Atención ao cliente
For technical assistance, troubleshooting, or warranty service, please contact HIOKI customer support through their official website or authorized service centers. Refer to the contact information provided in the original product packaging or on the HIOKI official websitio.