High Voltage Bridge Cable Fault Locator
Murray bridge fault locator with a built-in 15 kV constant-current source, for cable sheath faults, high-resistance breakdowns and low-insulation defects.
Made in Wuhan, China
Electrical Test Equipment Manufacturer
Transformer, Circuit Breaker, Cable, High-Voltage & CT/PT Testing
Field-ready instruments for utilities, grid operators and industrial power users, built to IEC and IEEE test methods, with engineering support that replies within one business day.
IEC 60076IEC 62271-100IEEE 400.2IEC 60060-1IEC 60255
VLF WITHSTAND · 0.1 Hz SINE · IEEE 400.2 HOLD
Test voltage3.0 U₀
Leakagestable
Elapsed00:00
Example test sequence: very low frequency withstand test on a medium-voltage cable.
10Years in electrical testing
40+Countries supplied
1,000+Instruments delivered
3Years warranty
Products & solutions
Electrical test instruments by asset
Find the right test set by the equipment you maintain.
What do you need to test?
Transformer Testing
Transformer test equipment for turns ratio, winding resistance, tan delta, SFRA winding deformation, OLTC, impedance and loss tests.
Circuit Breaker Testing
Circuit breaker analyzers, contact resistance testers and DC operating supplies for timing, travel, speed and micro-ohm tests on HV and MV switchgear.
Cable Testing & Fault Location
Cable fault locators and cable test equipment for withstand testing, sheath fault location and pinpointing faults in MV and HV cable networks.
High Voltage & Insulation
Series resonant test systems and AC hipot test sets for withstand testing of cables, transformers, GIS and switchgear, at test voltages up to 500 kV.
Relay Protection Testing
Relay test sets for secondary injection testing of protection relays, from feeder overcurrent to differential protection and digital substations.
CT / PT Testing
CT analyzers and CT/PT testers for excitation, knee point, ratio, polarity, burden and accuracy tests on current and voltage transformers.
Grounding & Earth Resistance
Earth resistance testers for ground grid integrity, fall-of-potential, clamp-on and soil resistivity measurements.
Battery & DC Systems
Battery discharge testers for substation, UPS and telecom battery banks, and balancing instruments for lithium battery packs in EVs and energy storage.
Featured instruments
Most requested by field teams
HUAC-22/22-10kV
10 kV Variable Frequency Series Resonant Test System
AC withstand testing of 10 kV cables, switchgear and transformers, tuning to resonance anywhere from 30 to 300 Hz.
IEC 60060-1DL/T 849.6
HUAC-1300
6-Phase Relay Protection Tester (Relay Test Set)
Relay test set with 6 voltage and 6 current outputs, linear amplifiers, 30 A per phase or 180 A in parallel, DC auxiliary supply and PC software.
HUAC-GKC-HA
Circuit Breaker Analyzer with 9-Inch Touch Screen and Bluetooth
Circuit breaker analyzer for timing, bounce, travel, speed and coil current, with built-in 6–270 V supply, 9-inch touch screen, printer and Bluetooth.
GB 1984DL/T 846.3
HUAC-2071
Three-Phase Transformer Turns Ratio Tester (TTR), Battery Powered
Battery-powered three-phase TTR tester: ratio, vector group and polarity in about 10 seconds with one connection, ratio 0.9 to 10,000, 3.5 kg.
HUAC-518A
Touch Screen CT/VT Analyzer
Automatic CT and VT analyzer: excitation, ratio, polarity, winding resistance and burden; knee points up to 60 kV by low-frequency method, under 9 kg.
IEC 61869IEC 60044-1IEC 60044-6
Focus areas
Built for the people who keep power flowing
T&D
Utilities & grid operators
Test equipment for transmission and distribution substations: transformers, circuit breakers, cables, CTs/VTs and protection relays.
PLANT
Industrial power users
Test equipment for in-house substations at steel, chemical, mining and other plants: switchgear, transformers, cables and protection.
EPC
Testing & commissioning contractors
Portable test kits for commissioning contractors and EPC projects: acceptance testing of new substations, cables and switchgear.
PV · WIND
Renewables
Test equipment for wind and solar farms: step-up transformers, collector cables, switchgear and protection at the substation.
CRITICAL
Data centres
Test equipment for data centre power systems: MV switchgear, transformers, cables and protection that cannot afford downtime.
Why HUAC
Designed, built and calibrated in Wuhan
You buy from the people who build the instrument, so questions about a reading go straight to the engineer who designed it.
- Factory directNo reseller margin on direct orders. Distributors get protected territory pricing.
- Standards-based testsMeasurement methods and report templates follow IEC and IEEE.
- Configured for your gridSupply voltage, plug type and interface language for your market.
- OEM and private labelCustom branding and report formats for distributors.
In the field
Delivered, installed and testing
Compatibility & quality
Tests the equipment already in your substation
Used to test transformers, breakers, cables and relays from all major manufacturers, including:
ABBSiemensSchneider ElectricGE VernovaSELHitachi Energy
How ordering works
From test requirement to commissioned instrument
Requirement review
Send the asset ratings and the tests you need to run. We match the instrument and options.
Technical proposal
Datasheet, quotation and sample test report for your approval.
Build and calibrate
Configured for your voltage, frequency and language, then calibrated before shipment.
Ship and clear
Export packing, documents for customs, and tracking to your site.
Commission and train
Remote commissioning and operator training on your first live test.
Knowledge hub
Testing guides for engineers
ASEAN Power Grid in 2026: new funding, new interconnections and what they mean for testing
New ADB-led funding, nine of 18 priority interconnections complete and demand set to triple by 2040. Where the ASEAN Power Grid stands in 2026.
Vietnam plans 292 transmission projects by 2030: what it means for substation commissioning
78 projects at 500 kV, 214 at 220 kV, 16,665 km of lines and 91,263 MVA of transformers in five years. What the revised PDP VIII means for commissioning.
Indonesia's RUPTL 2025–2034: 47,758 km of new lines and what they mean for testing
47,758 km of new transmission lines, 36 GW of renewables and a green supergrid between islands. What PLN's plan means for commissioning and maintenance.
FAQ
Questions buyers ask first
Can't find your answer? Our sales engineers reply within one business day.
Which test standards do HUAC instruments follow?
Test methods follow the relevant IEC and IEEE standards for each asset, for example IEC 60076 for power transformers, IEC 62271-100 for circuit breakers, IEEE 400.2 for VLF cable testing and IEC 60270 for partial discharge measurement.
Do you ship to Europe, North America and Southeast Asia?
Yes. Instruments are supplied with English software and manuals, and voltage, plug type and labelling are configured for the destination market.
Can distributors order OEM or private-label instruments?
Yes. Distributors can request custom branding, language packs and report templates. Contact the sales team with your target market and volumes.
What support is available after delivery?
Remote commissioning, online operator training, calibration and repair, and spare parts. Software and firmware updates are provided for the instrument's service life.
Where to buy
Request a quote or become a distributor
Tell us the asset and the tests you need to run. A sales engineer will send a recommendation, datasheet and quotation.
- We reply within one business dayA sales engineer reads your request and asks for anything missing.
- You get a recommendationThe right model and options, with a datasheet and quotation.
- No obligationAsk about lead time, shipping and payment terms before you decide.
- sales@huactester.com
- +44 7434 594200
- Factory
- Wuhan, Hubei, China
- Hours
- Mon–Sat, 08:30–18:00 (UTC+8)