An operations manager at a coastal utility in the Philippines emailed us a photo of a transformer breather last April. The silica gel inside had turned pink — exhausted — and his crew had already replaced it twice that quarter. Humidity a...
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A procurement manager for a Chilean mining contractor called us in July with a question we hear more often than buyers expect: if he ordered a 15 MVA oil immersed transformer from our factory, did protection come included, or did he have to source it...
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A purchasing manager in Ohio called us in May with a question we hear almost daily now. Not about price, not about kVA — about a date. "If we approve the drawings this week, which week does the transformer ship?" Six years ago we could answer f...
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Last quarter, a contractor in Texas sent us a photo of a transformer nameplate from a competing quote. The unit was rated 1,000 kVA, 13.8 kV delta to 480Y/277 V, UL-listed — everything looked right until we read the temperature-rise line: 80&de...
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A utility engineer in Nairobi sent us an RFQ for a high altitude transformer last quarter — 1,000 kVA pad-mounted, 13.8 kV delta to 480Y/277 V, 65 K rise, UL-listed. The spec sheet looked like a hundred others we quote. Then our engineer asked ...
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Last fall, a utility in the U.S. Midwest called us about a 15 MVA transformer that tripped on differential protection at 3 a.m. Their most recent oil sample, drawn six months earlier, had come back clean on every dissolved gas. We opened the tank and...
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Last spring, a plant engineer in Ohio emailed us about a 13.8 kV loop feeding three production buildings. A phase-to-ground fault had been hunting through that system for two weeks — the protective relays saw almost nothing, because the loop wa...
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Two summers ago, a utility in Texas added a second 1,000 kVA pad-mounted transformer beside an existing unit to carry a growing residential feeder. The plan looked simple: parallel the secondaries on a common bus and let both units share the load. On...
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Last spring, a utility engineer in California asked us to price a 25 MVA unit for a substation about two hundred meters from a protected wetland. The spec sheet said mineral oil, the way it always had. His question stopped our quoting engineer mid-se...
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Three weeks ago, an EPC buyer in Hanoi sent us a transformer specification written around IEEE C57.12.00, with "60 Hz" typed into the frequency column. The project is in Vietnam, where the grid runs at 50 Hz and the utility accepts IEC 60076 test rep...
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Two weeks ago an EPC buyer in Texas sent us an RFQ for wind farm transformer units with “33 kV” typed into the collector voltage column. The project is in the United States, where 34.5 kV is the default collector class. One number separat...
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Last month, a buyer in Ohio sent us two quotes for what looked like the same transformer: 1,000 kVA, three-phase, 13.8 kV to 480Y/277 V, both UL-listed, both from established Asian factories. One quote was 9% cheaper. He asked us to match the price. ...
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