no-load power consumed by transformer

例句：

1. 1.The transformer consumes a significant amount of no-load power when the mains are not in use.
   当主电源不使用时，变压器消耗大量的无负荷功率。
2. 2.During maintenance, the transformer must be disconnected from the grid to avoid consuming no-load power.
   在维护期间，必须将变压器与电网断开，以避免消耗无负荷功率。
3. 3. The engineer carefully monitored the transformer's no-load power consumption to ensure it remained within safe limits.
   工程师仔细监控变压器的无负荷功率消耗，以确保其保持在安全范围内。