Kewtech KEW3125B High Voltage 5kV Insulation Tester
Original price was: £775.00.£731.00Current price is: £731.00. / £877.20 incl VAT
⚡ Measures insulation resistance up to 1 Tera Ohm for comprehensive testing
⚡ Selectable output voltage range from 250V to 5000V for flexibility across applications
⚡ Electrical noise filter ensures accurate readings in high-voltage environments
⚡ PI and DAR testing functions provide in-depth insulation diagnostics
⚡ Lightweight and compact design—perfect for on-site testing in rugged conditions
In stock (can be backordered)
Description
Kewtech KEW3125B High Voltage 5kV Insulation Tester
Product Description:
The Kewtech KEW3125B is a compact, high-performance insulation tester designed for demanding high voltage testing environments. As the UK’s smallest 5kV insulation resistance tester, it delivers outstanding accuracy and durability while being easy to transport and operate in the field. With an impressive insulation resistance range up to 1 TΩ and selectable test voltages from 250V to 5000V DC, it is suitable for a wide range of insulation testing applications across cables, transformers, motors, and more.
This instrument also supports diagnostic insulation testing through PI (Polarization Index) and DAR (Dielectric Absorption Ratio) measurements, providing deeper insights into the condition of insulation over time. The built-in electrical noise filter ensures accurate, stable readings even in high-voltage substations or other electrically noisy environments. Engineered for professional use, the KEW3125B comes housed in a robust carry case and includes all essential test leads and probes for immediate deployment.
Key Features:
- Insulation resistance measurement range up to 1 TΩ
- Adjustable test voltage from 250V to 5000V DC
- Built-in 1.5mA leakage current for enhanced test stability
- Polarization Index (PI) and Dielectric Absorption Ratio (DAR) functions
- Electrical noise filter for stable results in high-interference areas
- Compact and lightweight design, ideal for field use
- Comes in a rugged carry case for tough environments
- Ideal for use in substations, power plants, and industrial applications
What’s Included:
- Kewtech KEW3125B High Voltage 5kV Insulation Tester
- Hard carry case
- Line probe
- Earth probe
- Guard probe
- Hook probe (suitable for use on busbars and power lines)
Which Kewtech KEW HV Insulation Tester?
| KEW3125B | KEW3127 | KEW3128 | |
|---|---|---|---|
| Test Voltage | |||
| 250V | ✔ | ✔ | ✔ |
| 500V | ✔ | ✔ | ✔ |
| 1000V | ✔ | ✔ | ✔ |
| 2500V | ✔ | ✔ | ✔ |
| 5000V | ✔ | ✔ | ✔ |
| 10000V | ✔ | ||
| 12000V | ✔ | ||
| Measurement | |||
| Max reading | 1 TΩ | 10 TΩ | 35 TΩ |
| Voltage | 30-600 V AC/DC | 30-600 V AC/DC | 30-600 V AC/DC |
| Capacitance | ✔ | ✔ | |
| Leakage current | ✔ | ✔ | |
| Test Types | |||
| Timed insulation resistance | ✔ | ✔ | |
| Polarisation index | ✔ | ✔ | ✔ |
| Dielectric absorption ratio | ✔ | ✔ | ✔ |
| Step voltage | ✔ | ✔ | ✔ |
| Dielectric discharge | ✔ | ✔ | ✔ |
| Ramp | ✔ | ✔ | |
| Other Feature | |||
| Analogue and digital display | ✔ | ✔ | ✔ |
| Short circuit current | 1.5 mA | 5.0 mA | 5.0 mA |
| Rechargeable | ✔ | ✔ | |
| Electrical noise rejection | ✔ | ✔ | ✔ |
| Download software included | ✔ | ✔ |
What’s In The Box?
- Kewtech KEW3125B High Voltage 5kV Insulation Tester
- ACC7165A Line probe
- ACC7264 Earth probe
- ACC7265 Guard probe
- ACC8019 Hook probe
- Carry case Batteries
- Instruction Manual
KEW3125B Specifications:
|
- Kewtech KEW3125B High Voltage 5kV Insulation Tester
- ACC7165A Line probe
- ACC7264 Earth probe
- ACC7265 Guard probe
- ACC8019 Hook probe
- Carry case Batteries
- Instruction Manual
🚚 Testersmans Shipping Policy
Free Mainland GB Delivery Over £150
We offer free delivery on most mainland Great Britain orders over £150 (ex VAT).
This applies across England, Wales, and most of Scotland, excluding certain remote or offshore postcodes.
If your order total falls just short of £150, or you’re a returning customer, feel free to contact us — we may be able to offer a discount code or delivery workaround.
📞 01945 738112 | ✉️ [email protected]
📦 UK Delivery Options
We work with both Royal Mail and DHL to offer reliable and flexible delivery across the UK:
- Royal Mail – Best suited for lighter parcels and for customers in remote regions, including the Highlands, Islands, and Northern Ireland.
- DHL – Ideal for most mainland UK orders, providing fast, tracked delivery and excellent reliability for time-sensitive shipments.
Our checkout system automatically displays the available delivery services for your postcode and order weight, ensuring you always see the most suitable options.
Note: Heavy, bulky, or freight-only orders will be charged separately.
Our website is designed for quick, transactional purchases rather than bulk or palletised orders.
Please contact us in advance for a tailored freight quotation if your order falls into this category.
⏱ Dispatch & Delivery Timing
We aim to dispatch all in-stock orders promptly, but delivery depends on both when you order and which service you select.
- UK orders: placed by 2:00 PM Monday–Friday are usually dispatched the same day.
- International orders: placed by 2:00 PM Monday–Thursday are usually dispatched the same day.
Orders placed after these times are processed the next working day. This means delivery may occur the following day or later, depending on the courier and service selected.
Once dispatched, your chosen delivery service determines how quickly your parcel arrives:
- Standard services We use Royal Mail Tracked 24 or DHL Parcel as our ‘Standard’ services. They are not guaranteed to arrive next working day.
- Premium services (e.g. Royal Mail Special Delivery or DHL by Noon) offer guaranteed delivery windows.
If your order is time-sensitive, we strongly recommend choosing a guaranteed service or contacting us before ordering to confirm availability.
Please note: For logistical reasons, we may occasionally adjust the delivery method selected at checkout. For example, smaller items may be better suited to letterbox-friendly packaging or may be at greater risk of delay or loss via certain services. We actively monitor courier and postal service disruptions—including strikes and delays—and may modify shipping arrangements to help ensure timely and secure delivery.
📅 Busy Periods & Delays
We always aim to dispatch promptly, but delivery times may be affected by:
- Seasonal demand (e.g. Christmas, bank holidays, or industry shutdowns)
- Courier network delays outside our control
- Supplier lead times or calibration requirements for certain equipment
If your delivery is time-critical, please contact us before ordering so we can confirm stock and courier availability.
🌍 International Shipping
We ship worldwide using UPS Express Saver® and other trusted global courier partners. All international shipments are tracked and generally dispatched Monday to Thursday to ensure smooth customs clearance and transit.
Estimated delivery times:
- Europe: 1–2 working days
- North America: 2–3 working days
- Asia-Pacific & Rest of World: 3–5 working days
Delivery times vary depending on location, customs clearance, and local courier performance.
💰 Taxes, Customs & Import Duties
International customers are responsible for any applicable taxes, customs charges, or import duties.
These are not included in our product or shipping prices.
Your courier will typically provide a secure payment link for any import charges once your parcel reaches customs.
If import fees are refused and the parcel is returned, we will issue a refund minus all incurred shipping and return costs.
📍 Using Your Own Courier
If you would prefer to arrange collection via your own courier (UK or international), please contact us before placing your order to coordinate collection from our Wisbech warehouse.
📝 Important Notes
- Please ensure your delivery address and contact number are correct at checkout.
- Undelivered parcels may be returned to us after a short holding period.
- Redelivery or return fees may apply, even if your order originally qualified for free delivery.
- By placing an order, you confirm your understanding and acceptance of this policy.
Additional information
| Weight | 4000 g |
|---|