Kewtech KEW3125B High Voltage 5kV Insulation Tester
Built for demanding electrical testing, this unit delivers reliable insulation checks in high voltage systems. The Kewtech KEW3125B supports accurate results across a wide range of applications. It is well suited for engineers working on cables, switchgear, and industrial equipment.
With selectable test voltages from 250V to 5000V, users can match the output to the task. This helps improve accuracy and reduces the risk of damage during testing. The Kewtech KEW3125B also maintains stable readings when working in noisy electrical areas.
Reliable high voltage testing
Clear insulation resistance measurement up to 1 tera ohm ensures dependable results. The unit includes a built in noise filter to reduce interference. This allows stable readings even in substations and other high interference sites.
Timed testing functions such as PI and DAR help assess insulation condition over time. These tools support deeper analysis and better maintenance planning. The Kewtech KEW3125B makes these tests simple to perform.
Practical field use
A strong carry case keeps the tester protected during transport. The design also supports use with a full set of probes for different tasks. This makes the unit flexible for a wide range of jobs.
Included accessories allow testing on bus bars, cables, and power lines. The Kewtech KEW3125B offers a complete solution for field engineers. As a result, it supports safe and efficient daily work.
Key Features
- Measures insulation resistance up to 1 tera ohm
- Selectable test voltages from 250V to 5000V
- Supports polarisation index testing
- Supports dielectric absorption ratio testing
- Includes timed insulation resistance testing
- Electrical noise filter improves measurement stability
- Designed for cable and equipment diagnostics
- Suitable for use in high voltage environments
- Compact design for easy transport
- Supplied with multiple probe types for flexibility
- Clear display for easy reading of results
- Stable performance in electrically noisy areas
Technical Specifications
| Manufacturer | Kewtech |
| Manufacturer part code | KEW3125B |
| Insulation resistance range | Up to 1 TΩ |
| Test voltage options | 250V 500V 1000V 2500V 5000V |
| Short circuit current | 1.5 mA |
| Measurement accuracy | ±5 percent rdg ±3 digits |
| Display type | Liquid crystal display |
| Voltage measurement | 30V to 600V AC DC |
| Overrange indication | OL mark displayed on screen |
| Power supply | LR14 alkaline battery size C x 8 |
| Low battery indication | Battery symbol with four levels |
| Dimensions | 177 x 226 x 100 mm |
| Weight | Approx 4 kg including accessories |
| Warranty | One year |
Comparison Table
| Model | KEW3125B | KEW3127 | KEW3128 |
| Max resistance | 1 TΩ | 10 TΩ | 35 TΩ |
| Test voltage 250V to 5000V | Yes | Yes | Yes |
| Higher voltage range | No | No | Up to 12000V |
| Capacitance measurement | No | Yes | Yes |
| Leakage current measurement | No | Yes | Yes |
| Timed insulation test | No | Yes | Yes |
| PI and DAR testing | Yes | Yes | Yes |
| Short circuit current | 1.5 mA | 5.0 mA | 5.0 mA |
| Rechargeable | No | Yes | Yes |
Document Downloads
What’s Included
- Kewtech KEW3125B High Voltage 5kV Insulation Tester
- ACC7165A line probe
- ACC7264 earth probe
- ACC7265 guard probe
- ACC8019 hook probe
- Carry case
- Batteries
- Instruction manual