HighTest Technology

What HighTest Technology does

HighTest Technology Ltd. is a UK-based private manufacturing company that designs, produces, and sells precision electrical test equipment, with an exclusive focus on transformer test systems and circuit breaker testing instruments. Founded in 2018 and headquartered in Hampton (relocated from Hertford in 2025), the firm serves power generation, transmission, and distribution utilities, transformer OEMs, and industrial facilities with substations, railway power distribution, and arc furnace applications. Its product portfolio spans single-phase and three-phase transformer turns ratio testers (TURA-01, TURA-03, TURA-X), 20A winding resistance testers (WINRES-20 series, TRIORES-20), circuit breaker timers and analyzers (CIBRE-L3, CIBRE-L6, CIBRE-30), contact resistance micro-ohmmeters (ARES-200), and 80 kV vacuum bottle testers (VABO-80, VABO-80B), differentiated by accuracy specifications (e.g., 0.08% TTR precision, 0.05% rdg ± 0.1 ms timing accuracy), battery-powered field-portable designs with IP65/IP67 protection, and optional Bluetooth connectivity.

The underlying technology stack combines precision analog measurement with embedded firmware and a proprietary software layer: the desktop Data Management Platform (DMP) for PC-based instrument control and result analysis, and the HighTest Android app for Bluetooth-connected field workflows. HighTest monetizes through one-time capital equipment hardware sales with configurable options (battery, Bluetooth, built-in printer), supplemented by repair and calibration services. The company sells direct to enterprise customers globally via its multi-language website (English, French, Japanese, Arabic) with 24x7 technical support, holds ISO 9001 certification across development, production, sales, and service, and is privately held with no disclosed external funding.

Name

HighTest Technology

Legal name

HighTest Technology Limited

Website

https://hightest.co.uk

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

11–50 employees

Short description

HighTest Technology Ltd. is a UK-based manufacturer of precision electrical test equipment, specializing in transformer test systems and circuit breaker testing instruments sold direct to power utilities, transformer OEMs, and industrial facilities worldwide.

Ownership category

akta.pro rank

Product category

Electrical Test Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Other Measuring and Controlling Device Manufacturing (334519), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

akta.pro secondary industries

Commissioning, testing & energization services (HVT, relay testing, SAT) (EUADAKAE), Substation & HV Equipment Diagnostics (Partial Discharge, DGA, SF6) (EUAEAHAH)

Keywords

• Transformer test equipment
• Circuit breaker analyzers
• Winding resistance testers
• Turns ratio testing
• Vacuum bottle testers

Headquarters

HQ city

Hampton

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Test Equipment Hardware Sales: The company manufactures and sells precision electrical test equipment including TTR testers, winding resistance testers, circuit breaker analysers, contact resistance testers, vacuum bottle testers, and related accessories. Products are sold with various configuration options (battery, Bluetooth, printer) as one-time capital equipment purchases.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

HighTest Technology Ltd. designs, manufactures and markets highly precise electrical test equipment focused on transformer and circuit-breaker diagnostics. The portfolio covers transformer turns ratio (TTR) testers, 20A winding resistance testers, circuit breaker timers/analysers, contact resistance meters, and 80 kV vacuum bottle testers, supported by a proprietary Data Management Platform (DMP) and an Android app with Bluetooth connectivity. Instruments are offered in standard, battery-powered and Bluetooth-enabled configurations with built-in printers, and the company provides full-lifecycle repair, calibration and 24x7 technical support.

Product overview

HighTest Technology Ltd. is a UK-based manufacturer of highly precise electrical test equipment specializing in transformer test systems and circuit breaker testing instruments. The product portfolio centers on two main categories: Transformer Test Equipment (including TURA series turns ratio testers for single-phase, three-phase, and true three-phase transformers, WINRES/TRIORES series winding resistance testers with various configurations, and VABO series vacuum bottle testers) and Circuit Breaker Testing Equipment (including CIBRE series circuit breaker timers and analysers). Products are offered with various feature combinations (standard, battery-powered, Bluetooth-enabled, with built-in printers) and are supported by DMP Software for PC-based data management and analysis, plus a mobile Android app for field connectivity. All products are ISO9001 certified and designed for both factory and field testing applications.

Differentiator

Problem solved

Functional benefit

Products and services

• WINRES-20 Series Winding Resistance Tester A 20A DC winding resistance tester family offered in standard, battery-powered (WINRES-20B) and Bluetooth-enabled (WINRES-20B BLUE) configurations, with built-in printer option. Measures DC resistance of transformer windings and shunt resistors from 0.1 µΩ to 100,000 Ω at 0.1% accuracy, supports heat-run / temperature-rise tests, demagnetisation and OLTC control via the Intelligent Decision Criteria (IDC) automatic test termination feature. Designed for transformer-manufacturer QA and field service crews testing windings and tap-changers on power and distribution transformers.
• TRIORES-20 Series Three-Phase Winding Resistance Tester A 20A fully automatic three-phase winding resistance tester with built-in printer that performs simultaneous primary and secondary resistance measurement without disconnecting cables. Supports both three-phase and single-phase transformer winding tests for transformer manufacturers and field crews needing faster three-phase diagnostics than single-channel instruments.
• TURA-01 Single-Phase Transformer Turns Ratio Tester A battery-powered single-phase transformer turns ratio (TTR) tester with built-in printer that measures turns ratio from 0.8 to 33,000 at 0.08% precision on current, voltage and power transformers. Targets utilities, service teams and transformer manufacturers performing field and bench testing of single-phase transformers.
• TURA-03 Three-Phase Transformer Turns Ratio Tester A three-phase transformer turns ratio tester with built-in printer that automatically tests all phases after a single connection. Aimed at utilities and transformer manufacturers running factory or commissioning checks on three-phase distribution and power transformers.
• TURA-X True Three-Phase Transformer Turns Ratio Tester A true three-phase transformer turns ratio tester with built-in printer that performs simultaneous 3-phase and sequential 3-phase tests without prior knowledge of winding configuration, and additionally supports magnetic balance testing. Measures turns ratio from 0.8 to 50,000 at 0.08% precision; targets advanced transformer diagnostic use cases for utilities and OEMs.
• CIBRE-L3 Series 3-Contact Circuit Breaker Timer A 3-contact circuit breaker timer with built-in printer for testing contact timings of circuit breakers, featuring timing accuracy of 0.05% rdg ± 0.1 ms, optional battery and Bluetooth communication, and IP67 environmental protection. Used by utilities, OEMs and industrial maintenance crews for field timing tests on 3-contact breakers.
• CIBRE-L6 Series 6-Contact Circuit Breaker Timer A 6-contact circuit breaker timer with built-in printer and a 4.3-inch color touch display, available with optional battery and Bluetooth communication. Built for utilities, OEMs and service teams timing more complex 6-contact breakers, including those with multiple auxiliary contacts.
• CIBRE-30 Series Circuit Breaker Analyser A 3-contact circuit breaker analyser with built-in printer that supports full contact-timing sequences (O, C, O-C, C-O, O-C-O) and motion tests measuring transducer speed, stroke and contact bounce. Targets users needing combined timing + motion diagnostics on 3-contact breakers in substations and industrial switchgear.
• VABO-80 Series 80 kV Vacuum Bottle Tester An 80 kV DC vacuum interrupter / vacuum bottle tester for verifying the integrity of circuit-breaker vacuum bottles, offered in standard and battery-plus-printer (VABO-80B) variants. Features up to 300 µA breakdown current, automatic test functionality, ultra-lightweight portable design and battery-powered field operation for utilities, OEMs and industrial plant crews.
• ARES-200 200A Micro-Ohmmeter A 200A DC micro-ohmmeter using the 4-wire Kelvin method to measure static and dynamic contact resistance of circuit breakers, shunts and disconnectors. Measurement range 0.1 µΩ to 5 Ω at 0.5% ± 0.1% FS accuracy, with dynamic resistance measurement, IP65 protection and a quick-test feature that completes a contact-resistance test in approximately 15 seconds; targeted at utilities, OEMs and industrial maintenance teams.
• Data Management Platform (DMP) Software A proprietary desktop software platform for PC-based control of HighTest instruments, allowing users to run tests, download stored results, analyse measurements and manage test data, with USB and optional Bluetooth connectivity to supported instruments. Bundled with HighTest instruments for utilities, OEMs and industrial users that need a PC-based workflow for managing transformer and breaker test results.
• HighTest Technology Android App A free Android mobile application available on Google Play that connects to HighTest testing devices via Bluetooth, enabling device management and access to test data in the field. Targeted at instrument users who need wireless control and quick review of results on a phone or tablet.
• Repair and Calibration Services An after-sales service offering for repair and recalibration of HighTest electrical test instruments, backed by 24x7 technical support and ISO 9001-certified service processes. Sold to existing customers who need to maintain the accuracy, traceability and warranty status of their installed base of test equipment.

Quantifiable outcome

• TURA-01 achieves precision of 0.08% with ratio measurement range of 0.8 to 33,000
• +4 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature7 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Haefely Hipotronics: Manufacturer of high-voltage test equipment including transformer testing instruments, hipot testers, and insulation diagnostic systems. Overlaps with HighTest on transformer acceptance and field testing, with additional high-voltage laboratory focus.
• OMICRON Electronics: Specialized manufacturer of primary and secondary test equipment for power systems, including transformer turns ratio, winding resistance, and circuit breaker analyzers. Closely comparable product overlap to HighTest in substation commissioning and diagnostic testing.
• Megger: Global leader in electrical test and measurement equipment with deep transformer, circuit breaker, and cable test portfolios. Directly comparable to HighTest across TTR, winding resistance, breaker timing, and insulation diagnostics, but at much larger scale and broader product breadth.
• Hioki E.E. Corporation: Japanese manufacturer of electrical test and measurement instruments including power meters, insulation testers, and resistance meters. Comparable in field-portable electrical test equipment, particularly in the Asian market where HighTest has a localized Japanese website.
• Chauvin Arnoux: French manufacturer of electrical test and measurement instruments for power, industrial, and energy applications. Comparable product categories to HighTest in power system testing, with strong presence in French-speaking markets aligned with HighTest's French website localization.
• Vanguard Instruments (Weed Instrument): US-based manufacturer of transformer test equipment (turns ratio, winding resistance, demagnetizers) and circuit breaker analyzers. Direct product-by-product competitor to HighTest in the utility and transformer OEM segments.
• Doble Engineering: Long-established provider of diagnostic instruments and services for power transformers, circuit breakers, and protection systems. Competes with HighTest in transformer testing, partial discharge, and insulation diagnostics, with strong utility relationships in North America.

Emerging players

• Raytech: Swiss manufacturer of portable micro-ohmmeters, winding resistance testers, and high-current test equipment. A smaller specialist with overlapping product focus on contact resistance and transformer winding testing, comparable to HighTest's ARES-200 and WINRES-20 lines.
• SOKEN Electric: Japanese manufacturer of electrical test equipment including transformer testing instruments and circuit breaker analyzers. Comparable niche specialist positioned in the Asian market where HighTest is investing in Japanese-language commercialization.

Broad incumbents

• KEMA Labs (CESI): Major testing, inspection, and certification provider for power equipment including transformers and switchgear. While primarily a service provider rather than equipment manufacturer, it competes in the same buyer budget for transformer quality verification that HighTest's test instruments address.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/hightestcouk
• LinkedInlinkedin.com/company/hightesttechnology
• Instagraminstagram.com/hightestcouk

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about HighTest Technology