electrician technician engineer with test device for testing relay protections power high voltage lines transformers |
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| navigate by keyword : binary blue button cable channel closeup commissioning communication computer control device devices digital electric electrical electronic electronics engineer engineering equipment hand industrial industry input instrument keyboard keypad lab laboratory measure medical modern network oscilloscope plug protection red relay science system technical technology terminal test testing unit voltage wire |
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| Electrician technician engineer with test device for testing relay protections of power high voltage lines, transformers and generators. Maintenance tools. Service man connect plugs to test device |
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