Çin Galaxy power industry limited Şirket Haberleri

A factory acceptance test is the only point in the procurement cycle where you can watch the machine work while the consequences are still someone else's problem. Yet most FATs consist of a short run, a photograph and a signature. For a machine that will hold 250 kN sustained over a river crossing, ... Daha fazla bilgi edinin

An inspection that happens on the morning of the pull is a formality. An inspection that happens a week before is maintenance. On high-voltage stringing, the difference shows up as a brake that will not hold, a load indicator reading 8 percent low, or a groove worn past its shoulder that nobody ... Daha fazla bilgi edinin

ACSR and ACCC fail differently, and treating them the same is how projects lose conductor. ACSR tolerates moderate bending and local pressure but work-hardens and loses strength once strands are nicked or flattened. ACCC, with its composite carbon or glass core, carries tension well but is far less ... Daha fazla bilgi edinin

In a twin or quad bundle, all subconductors should reach the tower at equal tension and equal sag. In practice they rarely do, and the difference is not cosmetic. Unequal tension means one subconductor carries more than its share, spacers sit under permanent stress, and the bundle twists and slaps ... Daha fazla bilgi edinin

Most stringing problems blamed on the machine are actually layout problems. A puller set thirty metres too far from the first block, a tensioner aligned five degrees off the conductor path, a drum stand crowded against a fence: none of these appear in a specification, and all of them appear as slip ... Daha fazla bilgi edinin

A crossing is not a long span with a bigger machine bolted on. It is a separate construction problem in which span length, ground clearance, live traffic, navigation and wind all constrain a pull that cannot be paused halfway. Most crossing failures are not equipment failures; they are planning ... Daha fazla bilgi edinin

Slippage is one of the few failure modes that damages the conductor and the machine at the same time. A slipping conductor polishes its own surface, generates local heat, abrades the groove lining and, if it slips far enough, drags across the groove shoulder and birds-nests the outer strands. The ... Daha fazla bilgi edinin

Hydraulic oil overheating is the most common reason a puller or tensioner leaves a section unfinished, and the most commonly misdiagnosed. The crew adds oil, changes the filter, and the temperature climbs again on the next pull. The oil is not the fault; it is the messenger. Heat appears when the ... Daha fazla bilgi edinin

A pull that stops halfway across a river does not stop because the machine ran out of strength. It stops because the oil reached 90 °C, the relief valve lifted, and the operator lost the ability to hold tension while the conductor hung in the span. The number that predicts this is not the maximum ... Daha fazla bilgi edinin

Conductor damage at the bull-wheel rarely announces itself. It appears at the end of a pull as a polished stripe along one side of the conductor, a flattened band of outer strands, or a scatter of broken aluminium wires two spans back from the tower. By the time the crew sees it, the machine has ... Daha fazla bilgi edinin