Transformer
test equipment
from HighTest
Technology.
Arom Energy supplies HighTest Technology instruments to utilities, manufacturers, laboratories, and industrial power users that require traceable test equipment and practical pre- and post-sale technical support.
HighTest instrument catalogue.
Transformer, circuit breaker, contact-resistance, vacuum-bottle, substation, primary-injection, calibration, and accessory families are available through Arom Energy. Select a family to review the available models and specifications.
Turns Ratio Testers
Single-phase & three-phase TTRs. 100 V to 250 V output, built-in printer, optional Bluetooth and battery operation.
Winding Resistance
20 A automatic winding resistance testers. Demagnetisation, simultaneous HV/LV, integrated thermometer and printer.
Circuit Breaker Analyser
3 & 6-contact timing analysers with travel transducer support, motion analysis, coil-current logging, built-in printer.
Contact Resistance
200 A and higher DC micro-ohm meters for switchgear, busbars, joints and breaker contacts. Bluetooth-enabled variants available.
Vacuum Bottle Tester
VABO-80 series tests vacuum interrupter integrity up to 80 kV. Battery-powered variant for field use, built-in printer included.
Substation Test Sets
SUWI-120 multifunction substation test set and TRAN-203 three-phase transformer analyser. Combined TTR + winding + dynamic resistance.
Primary Injection
PICU-1000 1000 VA primary injection tester for protection-system commissioning, CT testing, and end-to-end verification.
Calibrators
TRCAL-10K turns-ratio meter calibrator and CBSM circuit breaker simulator. Lab-grade reference instruments for QA labs.
Cables & Accessories
Original test leads, transport cases, current clamps, contact heads, replacement printer rolls, transducer kits and adapters.
Clear scope, traceable equipment, accountable support.
Each engagement is handled with defined scope, instrument traceability, practical engineering review, and documented next steps. The objective is straightforward: suitable equipment, reliable measurements, and decisions that can be defended.
Authorised channel
Genuine units shipped via the HighTest UK supply chain. No grey market, no parallel imports. Full manufacturer warranty on every serial number.
Traceable accuracy
Calibration documentation and instrument records are handled as part of the technical file, so procurement, QA, and field teams can retain a clear audit trail.
Technical access
Pre-sale specification, test-plan review, post-sale troubleshooting, firmware guidance, and training are managed by people familiar with transformer test practice.
Lifecycle support
Recalibration planning, firmware updates, and authorised repair coordination help keep instruments in service and within the required specification.
A documented path from request to close-out.
Every equipment supply follows the same sequence: define the technical requirement, confirm the commercial scope, ship and hand over, then maintain the record for ongoing support.
Define
Confirm the asset, applicable standard, site constraints, required deliverables, and any witness or reporting requirements.
Scope
Provide an itemised equipment or service proposal with assumptions, exclusions, calibration status, and lead-time clearly stated.
Execute
Ship configured instruments with full calibration documentation, accessories, and handover support according to the agreed commercial scope.
Close out
Provide records, review findings, open-item tracking, recalibration planning, and follow-up technical support where required.
PORTABLE CASE
ROUGH-DUTY
SUWI-120 combined substation test set.
The SUWI-120 combines common substation test functions in one portable system for commissioning and field diagnostics. It supports transformer ratio and winding-resistance measurements, breaker timing, contact resistance, vacuum bottle testing, and related substation checks.
- Test families
- TTR · Winding R · Contact R · Vacuum · Timing
- Output
- Up to 250 V AC · 20 A DC
- Display
- Colour TFT · printer · Bluetooth optional
- Power
- Mains or internal Li-ion battery
- Use case
- Substation commissioning & field diagnostics
Technical support for critical power assets.
Arom Energy works with organisations responsible for transformer, breaker, and substation test decisions where measurement quality, documentation, and schedule discipline matter.
Transmission & distribution
Utility commissioning teams running new substations, refurbishment programmes, and routine maintenance windows on power transformers up to grid scale.
Industrial plants
Refineries, steelworks, data centres, mining sites — anywhere a private MV substation, large motors or critical breakers need annual proof-testing.
Renewables & storage
Wind, solar, BESS sites, and substation-scale grid connections. Test sets for collector transformers, breakers, and protection commissioning.
Labs & OEMs
Calibration laboratories, transformer manufacturers, and switchgear OEMs needing reference-grade calibrators (TRCAL-10K, CBSM) for QA flow.
Send the asset details and equipment requirements.
We will respond with the appropriate instrument configuration, accessory list, calibration documentation, and delivery window.