ULD-40 - Ultrasonic Corona/Arcing Detector

The ULD-40 is an ultrasonic detector designed for corona and arcing inspections for predictive maintenance in electric utilities. Corona effect occurs when electricity is discharges into the surrounding atmosphere form a high voltage source. Corona effects and electrical arcs in the air emit ultrasounds. The role of the ULD-40 consists of capturing emitted ultrasounds and of translating them into the audible range. This equipment is perfect for high voltage maintenance program.

WRT-10D : Winding resistance tester with Demagnetisation circuit

The WRT-10D is a High performance & High accuracy winding resistance tester, this unit has a built in Demagnetisation circuit to automatically or manually, demagnetize the transformers and avoid situations where the Current Transformer could cause the protection circuits to trip when re-energizing.

Portable Partial Discharge/ Detection and Localization System for Power Transformers AE-150

Application and Operation Powers transformers are critical to Transmission and Distribution substations. In fact, losing a unit can have a major financial consequence. To protect your investment, use Acoustic Emission Testing. This technique is superior to electric methods for on-site tests.

XDP II - Portable PD recorder and diagnostic system

The XDP II is a portable device for, online, factory and laboratory partial discharge measurement on electrical apparatus, or components. The XDP II can be used in accordance to IEC 60270. It records partial discharge measurements for computer analysis and diagnostic using the optional XDP II software for a PC. Using the appropriate accessories, the XDP II can be used in several applications.

ART-3D Transformer Ratio Testers

The ART-3D series are precision instruments, designed to measure turn ratios, phase displacements, excitation currents of single phase and three phase power, distribution and instrument transformers in conformity to the IEEE C57.12.90 & IEC 60076

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Our services

Ndb Tech calibration is a verification and adjustment of all parameters that allow optimal performance of your equipment. When sending your unit for a calibration, you receive the following benefits:

- Test results before and after calibration (if required)

- Calibration

- Performance verification

- Mandatory upgrades

Upon receipt of the equipment for calibration or repair, our process includes a comparison between current performance and reference units.  After checking the performance of the unit, we apply the necessary adjustments in order for the equipment to meet the specifications.

Return Material Authorization EN

Return Material Authorization-EN Form

 For more information about our calibration service and repair, please contact a representative of the customer service at 418-877-7701 #230 or by email at

 Ndb Technologies

1405 av. Saint-Jean-Baptiste, Suite 111

Québec, Qc G2E 5K2

Monday to Friday from 8am to 5pm E.S.T.

Cable and Phase Identification System

VCI-3 - Voice Cable Identification System

The VCI-3 is a vocal cable identification and phasing system used during installation or maintenance works on de-energized three phase systems.

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Partial Discharge Detection

XDP-14 - Partial Discharge Differential Sensor for Elbows

The Differential Sensor with Double Spatula allow reducing ambient noise and handling when measuring partial discharge on MV/HV cable elbows. The sensor is used with the XDP, an online...

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Micro-Ohmmeters & Miscellanious Test Equipment

DRM-10A - 10 amp Micro-ohmmeter for resistance from 0.01 micro ohm to 200 ohms

The DRM-10A micro-ohmmeter can be used to measure very low resistances which vary from 0,01µΩ to 200Ω. This is the most accurate on the market in its category.

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Substation Maintenance Test Equipment

WRT-10D : Winding resistance tester with Demagnetisation circuit

The WRT-10D is a High performance & High accuracy winding resistance tester, this unit has a built in Demagnetisation circuit to automatically or manually, demagnetize the transformers and...

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