# Uni-T UT512D High-Voltage Insulation Resistance Tester

**URL:** https://aio.lv/en/product--unit-ut512d--12478409
**Data updated:** 2026-05-22 07:21 (EEST)
**Category:** Measuring tools
**Manufacturer:** Unit
**Manufacturer code:** UT512D
**EAN:** 6935750551257
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 282.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 233.46 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-ut512d--12478409

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The Uni-T UT512D is a professional high-voltage insulation resistance tester designed for precise electrical diagnostics. This device is essential for testing the insulation integrity of cables, motors, transformers, and other electrical equipment. It features robust construction, accurate measurement capabilities, and a user-friendly interface, making it an ideal tool for maintenance engineers and technicians performing safety inspections in industrial and commercial environments.

## Long description

The Uni-T UT512D High-Voltage Insulation Resistance Tester is a professional-grade diagnostic tool engineered for precise electrical testing in demanding industrial and commercial environments. This robust device is specifically designed to evaluate the insulation integrity of critical electrical infrastructure, including high-voltage cables, motors, transformers, and switchgear. With its advanced digital processing and reliable measurement capabilities, it provides maintenance engineers and technicians with the data necessary to ensure operational safety and prevent unexpected equipment failures.
Advantages
This insulation tester stands out due to its versatile voltage output, which allows for testing across a broad spectrum of electrical systems. The integration of Polarization Index (PI) and Dielectric Absorption Ratio (DAR) measurement functions provides a deeper insight into the long-term health of insulation materials, moving beyond simple resistance checks. Furthermore, the device is built with user safety as a priority, featuring automatic discharge circuits and high-voltage alerts that mitigate risks during operation. The inclusion of extensive data logging capabilities and USB connectivity facilitates efficient documentation and reporting, which is essential for compliance and routine maintenance scheduling.
Suitable for
Testing insulation resistance of high-voltage power cables
Diagnostic maintenance of industrial motors and generators
Safety inspections of transformers and electrical switchgear
Preventive maintenance in power distribution networks
Verification of insulation integrity in commercial electrical installations
When it may not be suitable
This device is specifically calibrated for high-voltage insulation testing and may not be the optimal choice for basic low-voltage continuity checks or standard household appliance troubleshooting where lower voltage ranges are required. It is also not intended for use in explosive atmospheres or environments that exceed its specified CAT IV 600V safety rating.
Key specifications
Test voltages: 250V, 500V, 1000V, 2500V
Insulation resistance range: Up to 249 GΩ (accurate) and 1.00 TΩ (indicative)
Short-circuit current: Approximately 3.5 mA
Data storage: Up to 999 measurement sets
Connectivity: USB interface for PC data transfer
Safety rating: CAT IV 600V
Power source: 8 x LR14 alkaline batteries
Weight: Approximately 1800 g
How to use
To begin, ensure the device is powered by fresh batteries and connect the appropriate test leads to the input terminals. Select the desired test voltage based on the equipment specifications you are inspecting. Securely attach the leads to the insulation under test, ensuring a clean connection. Initiate the measurement and allow the device to stabilize. Once the reading is complete, the automatic discharge function will safely dissipate any residual charge. You can save the results to the internal memory and later transfer them to a computer via the USB cable for detailed analysis.
What to consider before purchase
Ensure the test voltage range matches the requirements of your specific electrical equipment.
Verify that the CAT IV 600V safety rating is sufficient for your working environment.
Consider the need for data logging and PC connectivity for your reporting workflow.
Check the physical dimensions and weight to ensure portability for your field tasks.
Usage recommendations
Always verify that the circuit under test is completely de-energized before connecting the insulation tester to prevent damage to the device and ensure operator safety. Regularly calibrate the instrument to maintain measurement accuracy and follow the manufacturer's guidelines for battery replacement to ensure consistent performance.

## FAQ

### How much does the Uni-T UT512D High-Voltage Insulation Resistance Tester cost, and is it available for purchase?

The price is 282.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 01.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Uni-T UT512D High-Voltage Insulation Resistance Tester be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Unit products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Unit service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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