עודכן לאחרונה 12/04/2022
MVA specializes in tests and services for high voltage transformers and systems: troubleshooting, advanced oil analysis, electrical tests, maintenance and repairs of high voltage and ultra-high voltage transformers.
Tests
On-Site transformers and HV system tests:
Ratio tests and on-line tap chager test.
Sweep frequency response analysis test –The most advanced test to detect internal mechanical faults and a wide range of electrical faults
Insulation Resistance Test: Tan-delta, capacitance and insulation tests.
On-Line-Tap-Changer tests for MR, HM tap changers.
Themographic imaging for detection of hot-spots and overheating faults.
Electrical cabinets and switchgear .
Advanced transformer oil analysis:
Advanced oil analysis lab, the only lab in Israel that performs dissolved gas analysis, enabling rapid turn-around and results in a short time. Advanced oil analysis are a key tool to troubleshoot internal problems in the transformer and even an indication to the remaining life of the transformer.
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In-plant transformers tests:
We provide the entire routine and type test suits including insulation tests, ratio, impedance, impuse, partial discharge, noise level, short-circuit over-voltage.
Services
On-site services and repairs
Oil leak repair using novel method without need for oil draining/dismantling insulators.
Transformer oil drying and filtration up to 6000L/h using one of the largest mobile vacuum drying machines. We are the only company able to perform drying while the transformer is energized (for critical transformers)
On-Line Tap Changer checks and services
Scheduled maintenance, tests and services for MR online tap-changers. We are an authorized MR and MR compatible representative able to perform all services for OLTC with full support from the manufacturer.
In-plant repairs and services for transformers up to 20MVA:
- Coil rewinding and replacement
- Vacuum oven drying
- Oil treatment/replacement
- Auxiliary system replacement: tap-changers/protection relays/valves.
Special Services:
Extended warranty for new Ardan transformers
Seminars and consulting: we give seminars at professional conferences, Technion and engineering schools.
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