Industrial DC drive thyristor bridge repair & field excitation check
Each thyristor in 6-pulse bridge tested with VOM in blocking and triggering mode; faulty thyristors replaced with IT-class equivalent with 2× voltage margin; gate pulse verified with oscilloscope and firing angle confirmed; field excitation circuit checked; reversing and regenerative braking tested.
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How it works
Our 6-step repair process
From request to warranted delivery — transparent, fast, and trackable with your RB code.
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Step 01
Submit request
Open a repair request online or coordinate intake; your unit is logged with an RB tracking code.
- Online request
- RB tracking code
- Fast intake
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Step 02
Inspection & diagnosis
Engineers run component-level diagnostics and share a clear condition report.
- Technical report
- Root-cause analysis
- Component-level diagnosis
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Step 03
Cost approval
You receive a clear cost and turnaround estimate; work continues only after your approval.
- Transparent estimate
- Approve before repair
- Clear schedule
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Step 04
Expert repair
Component-level repair with OEM-grade or verified parts — only failed parts are replaced.
- OEM-grade parts
- Component-level repair
- Specialist technicians
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Step 05
Testing & QA
Functional and load testing confirm the repair before release.
- Functional test
- Load test
- QA sign-off
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Step 06
Delivery with warranty
Packed and returned with work report, repair warranty, and online tracking.
- Repair warranty
- Delivery report
- Online tracking
Ready to get started?
Typical first response: 24–72 hours · No fix, no charge
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