Descrição do produto
The HK235F combines insulation resistance testing, AC/DC voltage measurement, and everyday electrical troubleshooting functions in one instrument. With selectable 250V, 500V, and 1000V insulation test voltages and a measurement range of 0.01MΩ to 2000MΩ, it helps technicians assess insulation condition in cables, motors, and electrical equipment.
True RMS measurement and a low-impedance (LoZ) voltage mode support AC/DC diagnostics, while resistance measurement, continuity testing, non-contact voltage detection, and live wire recognition provide additional troubleshooting options. A backlit LCD, built-in flashlight, LED status indication, and data hold make readings easier to obtain and record during maintenance work.
Principais características
- Three insulation test voltages: Select 250V, 500V, or 1000V to suit the equipment’s test requirements.
- Insulation resistance up to 2000MΩ: Measure across a range of 0.01MΩ to 2000MΩ.
- AC/DC voltage testing: Measure DC voltage up to 1000V and AC voltage up to 750V.
- True RMS measurement: Supports accurate AC readings on non-sinusoidal waveforms within the instrument’s specified limits.
- 600V LoZ AC/DC mode: Helps reduce the influence of ghost voltages during troubleshooting.
- Resistance and continuity testing: Includes 20Ω, 200Ω, and 2kΩ ranges, with an audible continuity alert below 30Ω.
- Voltage detection functions: Built-in NCV and live wire recognition assist with preliminary electrical checks.
- Improved visibility: Backlit LCD, flashlight, and LED status indication support work in dim areas.
- Convenient operation: Automatic range selection, data hold, low battery indication, and automatic power-off.
Especificações Técnicas
Insulation Resistance
| Test Voltage | Insulation Resistance Range | Precisão |
|---|---|---|
| 250V | 0.01MΩ–100MΩ | ±(3% + 5 digits) |
| 250V | 100MΩ–1000MΩ | ±(4% + 5 digits) |
| 250V | 1000MΩ–2000MΩ | ±(5% + 5 digits) |
| 500V | 0.01MΩ–100MΩ | ±(3% + 5 digits) |
| 500V | 100MΩ–1000MΩ | ±(4% + 5 digits) |
| 500V | 1000MΩ–2000MΩ | ±(5% + 5 digits) |
| 1000V | 0.01MΩ–100MΩ | ±(3% + 5 digits) |
| 1000V | 100MΩ–1000MΩ | ±(4% + 5 digits) |
| 1000V | 1000MΩ–2000MΩ | ±(5% + 5 digits) |
Electrical Measurements
| Parâmetro | Range / Specification | Accuracy / Tolerance |
|---|---|---|
| Insulation test voltage | 250V / 500V / 1000V | ±10% |
| Load current | 1mA | 0% to +10% |
| Short-circuit current | <2mA | — |
| DC voltage | 1000V | ±(0.8% + 3 digits) |
| AC voltage | 750V | ±(1.2% + 3 digits) |
| LoZ AC/DC voltage | 600 V | ±(1.2% + 3 digits) |
| Resistência | 20Ω | ±(1.0% + 5 digits) |
| Resistência | 200Ω / 2kΩ | ±(1.2% + 8 digits) |
| Continuity buzzer | Sounds below 30Ω | — |
Functions and Operating Conditions
| Característica | Especificações |
|---|---|
| Ecrã | 2000 counts |
| RMS real | Sim |
| Range selection | Automatic |
| LCD backlight | Sim |
| Built-in flashlight | Sim |
| LED status indication | Sim |
| Suspensão da recolha de dados | Sim |
| Non-contact voltage detection (NCV) | Sim |
| Live wire recognition | Sim |
| Low battery indication | Sim |
| Automatic power-off | Sim |
| Operating temperature | 0°C to 40°C, RH ≤85% |
| Storage temperature | −10°C to 50°C, RH ≤75% |
Accuracy is expressed as ±(% of reading + digits).
Candidatura
- Insulation testing of electrical cables
- Preventive maintenance for motors and windings
- Checking insulation after equipment repair
- Evaluating wiring before system energization
- Locating insulation deterioration in field equipment
- Low-resistance conductor and connection checks
- Maintenance of pumps, generators and industrial machinery
Perguntas frequentes
What insulation test voltages are available?
The HK235F provides 250V, 500V and 1000V insulation test outputs.
Can the HK235F replace a regular multimeter?
It covers voltage, continuity and selected resistance tests, but it does not list the full range of current, capacitance and frequency functions normally found in a general-purpose multimeter.
Is insulation testing safe on energized equipment?
No. Insulation resistance tests should be performed only on isolated and de-energized circuits after following the required discharge and lockout procedures.
HK235 Series Selection Guide
The supplied document provides detailed specifications for HK235C, HK235E, HK235G and HK235F. It does not include verified specifications for HK235A or HK235B, so their capabilities should not be inferred from the model names alone.
| Modelo | Best Choice For | Key Differentiator |
|---|---|---|
| HK235C | General electrical installation work | LED/LCD voltage indication, continuity, phase sequence and RCD testing up to 1000V |
| HK235E | Higher-voltage DC applications | Extends DC voltage testing and LED indication to 1500V |
| HK235G | Multifunction troubleshooting | NCV, LoZ, resistance, capacitance, frequency, duty cycle and MAX/MIN |
| HK235F | Insulation maintenance | 250V, 500V and 1000V insulation tests up to 2000MΩ |
| HK235A | Specifications not supplied | Request the HK235A datasheet before comparison |
| HK235B | Specifications not supplied | Request the HK235B datasheet before comparison |
How to Choose
- Escolha HK235C for routine voltage, continuity, polarity, phase-order and RCD checks.
- Escolha HK235E when the system may reach 1500V DC.
- Escolha HK235G when diagnostic versatility is more important than RCD testing or stepped high-voltage LED indication.
- Escolha HK235F for insulation resistance testing on cables, motors and electrical equipment.
- Do not publish a feature comparison for HK235A or HK235B until their official parameter sheets are available.
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