Voltech

What Voltech does

Voltech Instruments Limited is a privately held UK-based designer and manufacturer of electronic wound component testing equipment, founded in 1986 and headquartered in Blackburn, Lancashire. The company specializes in automatic transformer and inductor testers — including the flagship AT7600, the AT5600, the legacy AT3600, and the DC1000A DC bias current source — used by manufacturers of transformers, inductors, and magnetic components for production-line quality testing across power electronics, SMPS, audio, telecommunications, and lighting applications. The company reports serving 400+ customers in 50 countries, supported by regional offices in the UK (headquarters), USA (Fort Myers), and Asia (Nantong, via authorized distributor Nantong Bluebay Electronics), plus a multilingual website in 9 languages.

The core technology platform is built around a patented multi-relay switching matrix (US patent US5500598, UK 2261957B, EP 0621953B) that enables comprehensive single-station testing of inductance, capacitance, resistance, turns ratio, leakage inductance, Hi-Pot, surge, and other parameters. Differentiating technical features include 4-wire Kelvin measurement, proprietary cold switching extending relay life beyond 100 million operations, vector correction for leakage inductance, and an electronic relay cleaning routine. Supporting software — AT Editor and AT Server (dotNET) — provides PC-based test programming, central results collection, and Ethernet/USB integration with factory systems; an AT5600 API was released in September 2024. Custom fixtures, adapters, AC Interface extenders, and calibration/repair services complete the ecosystem.

Voltech's business model is dominated by capital equipment hardware sales (AT series testers, DC bias supplies, custom fixtures, accessories) augmented by software licenses (free updates for registered customers), recurring calibration and repair services at factory service centers, lease-to-own financing, and trade-in programs (20% discount on AT3600-to-AT7600 upgrades). Distribution combines direct enterprise field sales in North America, Europe, and Asia with authorized third-party distributors (most notably Nantong Bluebay in China) and a registered-customer web portal for quotes and ordering. The company operates without disclosed external funding or parent company relationships, and maintains a horizontal segmentation strategy targeting wound component manufacturers across multiple end-markets.

Name

Voltech

Legal name

Voltech Instruments Limited

Website

https://voltech.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

11–50 employees

Short description

Voltech Instruments designs and manufactures automatic wound component testing equipment — including the AT7600, AT5600, and DC1000A — for transformer and inductor producers serving power electronics, SMPS, audio, telecom, and lighting markets globally.

Ownership category

akta.pro rank

Product category

Transformer and Wound Component Testing Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Other Measuring and Controlling Device Manufacturing (334519), Electronic and Precision Equipment Repair and Maintenance (811210)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734), Measuring & Controlling Devices, Nec (3829)

akta.pro primary industry

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)

akta.pro secondary industries

Electrical Testing & Certification (Protection Relays, Switchgear, Transformers) (EUAEAHAG), Test, Probe & Burn-In Equipment (Wafer Sort/Final Test) (HDAHAEAJ)

Keywords

• Transformer testing equipment
• Wound component testing
• DC bias supply
• Production test systems
• Electronic component testing

Headquarters

HQ city

Abingdon

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware - Wound Component Testers: Sale of electronic testing equipment including AT7600, AT5600, AT3600 transformer testers. Main product category with significant capital equipment pricing requiring direct sales engagement.
2. DC Bias Current Sources: DC1000A and DC1000 DC bias supply units that integrate with the AT tester line or standalone with third-party LCR meters for magnetic component testing under bias conditions.
3. Custom Fixtures and Adapters: Custom-built test fixtures designed to customer specifications, along with standard adapters and fixtures for various component types.
4. Software Licenses: AT Editor and AT Server software for test programming and results management. Free updates provided to registered customers with ongoing software support.
5. Calibration and Repair Services: Factory-authorized calibration and repair services performed at Voltech Service Centers. Includes full evaluation, hardware/firmware upgrades, battery/filter replacement, electrical safety testing, and burn-in testing. 90-day warranty on all services.
6. Test Options and Accessories: Additional test options for expanding AT tester capabilities, safety systems, and accessories for testing setups.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels6 records

Core offering

Voltech designs, manufactures, and supports automatic electronic test equipment for transformers and wound components used in power electronics production. Its portfolio includes the AT7600 and AT5600 wound component/transformer testers, DC1000A DC bias current sources, custom test fixtures, AT Editor/AT Server software, and factory calibration/repair services. Equipment performs 40+ electrical tests (inductance, capacitance, resistance, turns ratio, leakage inductance, hi-pot, surge, watts, etc.) in a single station with sub-second cycle times.

Product overview

Voltech Instruments is a global leader in electronic wound component testing equipment, offering a comprehensive portfolio of transformer and wound component testers, DC bias supplies, custom fixtures, and supporting software. The core product line includes the AT7600 (flagship high-speed tester achieving 1.08 second test times), AT5600 (versatile transformer tester with 40+ test types), and legacy AT3600 (trade-in available). The DC1000A 25A DC Bias Supply provides magnetic component testing under realistic operating conditions, stackable to 250A. Supporting products include AT Editor dotNET (test program creation), AT Server dotNET (central control and results), DC1000 Sweep Software (automation), AC Interface (extended power testing), custom fixtures, and calibration/repair services. The ecosystem is unified by shared software platforms (AT Editor/Server) and common fixture systems across the tester range.

Differentiator

Problem solved

Functional benefit

Products and services

• AT7600 Wound Component Tester Automatic high-speed electronic tester for transformers and wound components in production-line manufacturing. Performs 40+ electrical tests in a single station, designed for 100% production testing with claimed 3x productivity and 60% cost savings versus prior-generation methods.
• AT5600 Transformer Tester Automatic transformer tester with PC-based AT Editor and AT Server software, designed for production testing of transformers and inductors. Supports Ethernet/USB integration with manufacturing systems.
• DC1000A 25A DC Bias Supply DC bias current source that simulates real operating conditions for magnetic components. Integrates with AT series testers and third-party LCR meters (HP, Keysight, Wayne Kerr, Chroma, Tonghui, HIOKI) for inductance measurement under DC bias.
• AT Editor dotNET PC-based software for creating and managing AT test programs, configuring test sequences, downloading programs to testers, and collecting results. Free updates provided to registered customers.
• AT Server dotNET Central test program server and results collection system supporting Ethernet and USB communications with AT series testers in production environments.
• DC1000 Sweep Software Software for automated DC bias sweep and saturation testing. Supports HP4284A, Keysight E4980, Tonghui TH283x, WK3260B, HIOKI IM3536, and IM3533 LCR meters.
• AT5600 API Application programming interface providing external software control of the AT5600 transformer tester for automation and integration with manufacturing systems.
• Voltech Custom-Built Fixtures Custom test fixtures built to customer specifications for AT series testers, including SMD fixtures and Kelvin Pin Plus configurations. Accompanied by Custom Fixture Designer software tool for fixture creation.
• AC Interface External AC power interface that extends AT5600/AT3600 capabilities to test larger transformers. Supports up to 600V at 10A from external AC sources including step-up/step-down transformers or programmable AC supplies.
• AT Test Options Optional test capability packages for AT testers including inductance, capacitance, resistance, turns ratio, leakage inductance, hi-pot, surge, watts, and magnetizing current tests, available in Standard and Gold packages or individually.
• Safety Systems Safety enclosures and systems designed for high-voltage testing operations with AT series testers.
• Adapters and Fixtures Various adapters and fixture options for connecting different component types to AT series testers.
• Accessories Supporting accessories for AT testers and DC1000 products including cables, connectors, and replacement parts.
• Calibration and Repair Services Voltech factory calibration and repair services for AT5600, DC1000/DC1000A, and AC Interface units. Includes full evaluation, hardware and firmware upgrades to latest standards, battery/filter replacement, electrical safety testing, burn-in testing, and a 90-day service warranty. Loan units available during service.

Quantifiable outcome

• Transformer test time reduced to 1.08 seconds with AT7600
• +3 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration11 records

Feature8 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Nantong Bluebay Electronics Co. LtdcoreChannel Partner/ Reseller/ DistributorAuthorized Asian distributor for Voltech products. Located in Nantong, China, providing local sales, service, and support for Asian customers. Full contact information provided including phone number.
• Caltest Instruments LtdminorChannel Partner/ Reseller/ DistributorUK-based ISO17025 accredited calibration and verification service for legacy PM series power analyzers. Recommended by Voltech for customers requiring ongoing validation of discontinued PM equipment.
• Techmaster Electronics IncminorChannel Partner/ Reseller/ DistributorUS-based ISO17025 accredited calibration and verification service for legacy PM series power analyzers. Recommended by Voltech for customers requiring ongoing validation of discontinued PM equipment.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Fluke (Fortive): Fluke's handheld and bench electrical test instruments (insulation testers, multimeters, power quality analyzers) overlap with portions of Voltech's testing portfolio. As a broad industrial T&M incumbent, Fluke brings vastly larger distribution and brand reach.
• Keysight Technologies: Keysight's E4980AL/AL precision LCR meters and broader impedance measurement portfolio compete with Voltech's AT series and integrate with the DC1000A. As a broad T&M incumbent, Keysight offers wider product breadth and global service.
• Rohde & Schwarz: Rohde & Schwarz sells high-end LCR meters and impedance analyzers overlapping with Voltech's test capabilities. As a broad T&M incumbent, it serves adjacent applications (EMC, RF, power electronics) with significantly larger R&D and global reach.
• Yokogawa Test & Measurement: Yokogawa offers precision power analyzers, LCR meters, and scope-corders used in power electronics and transformer characterization. Comparable to Voltech on precision electrical measurement, with broader portfolio and global service.

Direct peers

• Hioki E.E. Corporation: Hioki's IM3533/IM3536 LCR meters and DC bias test systems are both a competitor and an integration partner for Voltech's DC1000A. Hioki competes head-to-head in inductance/transformer testing and shares the same wound component customer base.
• Wayne Kerr Electronics (part of Aim-TTi): Wayne Kerr manufactures precision LCR meters and inductance analyzers used in transformer/wound component characterization. Its products integrate with Voltech's DC1000A and serve overlapping magnetics test customers.
• Chroma ATE Inc. Chroma sells automatic transformer testers and power electronics test systems directly overlapping with Voltech's AT series. Both target wound component manufacturers with integrated LCR, Hi-Pot, and DC bias test stations.
• Tonghui Electronic (TH): Tonghui's TH283x LCR meters and transformer test systems directly compete with Voltech, especially in Asian markets, and are supported by Voltech's DC1000 Sweep Software. Comparable on price-performance in volume manufacturing.

Emerging players

• TESEC Corporation: TESEC manufactures semiconductor and component test systems including transformer and inductor testers, directly competing with Voltech in magnetics production test. Smaller scale but with overlap in automotive and power electronics customers.
• Kikusui Electronics: Kikusui supplies AC/DC power sources, electronic loads, and Hi-Pot/safety testers used in transformer and power electronics production testing. Overlaps with Voltech's AC Interface and Hi-Pot test capabilities for power component manufacturers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/voltechinst

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Voltech