| 1. | Measurement of liquid flow in open channels - electromagnetic current meters
明渠液体流量的测量.电磁流速仪 |
| 2. | Electromagnetic current meter
电磁海流计 |
| 3. | Standard test method for velocity measurements of water in open channels with electromagnetic current meters
用电磁电流仪测量明渠水流速度的标准试验方法 |
| 4. | Measurement of liquid velocity in open channels - design , selection and use of electromagnetic current meters
明渠中液体流速的测量.电磁流量计的设计选择和使用 |
| 5. | The therapeutic generation of local heat in body tissues by high - frequency electromagnetic currents
透热疗法用电极或其它器械通过各种波长的高频电流使在组织内产生热以达到内外科治疗目的 |
| 6. | The realization of traditional rapid action relay function needs the combination of electromagnetic current relay , time relay and signal relay
传统的限时速切继电器需要电磁式电流继电器、时间继电器和信号继电器组合在一起才能够实现单点的保护功能。 |
| 7. | Because the electromagnetic current transformers have such shortcomings as magnetic saturation , ferromagnetic resonance and flammable and explosive traits , it is difficult for them to keep up with the development of power system
而传统的电磁式电流互感器具有磁饱和、铁磁谐振及易燃易爆的固有缺点，已很难适应电力系统的发展。 |
| 8. | From the experiments we can get a conclusion that with the characteristics of working well , sample circuit and light path , rated current error and phase error fulfilling accuracy class 0 . 2 , and respond speed and bandwidth superior to old electromagnetic current transducer , the hybrid current transducer we designed is practical
实验证明，采用这种方法设计的混合式光纤电流互感器工作可靠、电路和光路简单，比差和相差都能够很好地满足国标中对0 . 2级电流互感器的要求，动态响应速度、带宽等性能都明显优于传统的电磁式电流互感器，已经进入实用化阶段。 |
| 9. | Current transformers are nonreplaceable in the field of protection and measurement for decades , but the electromagnetic current transformers can not meet the development of the electric power system for the reasons of magnetic saturation , ferro resonance , little dynamic range , narrow service band and so on 。 with the popularization of microcompute , it will be irreversible to apply microcompute in the protection and measurement , the equipments do not need the current transformer with high power , so the rogowski coil can apply on the field of protection and measurement
电流互感器在继电保护和电流测量中的作用长期以来具有不可替代的地位，但电磁式电流互感器所固有的磁饱和、铁磁谐振、动态范围小、使用频带窄等都难以满足电力系统发展的要求。随着微机的普及，在继电保护和测量中应用微机已是不可逆转的潮流，设备已不再需要高功率输出的电流互感器，因此可以选用rogowski线圈作为低电压输出要求的电流测量和继电保护应用。 |
| 10. | Being no saturation under fault current conditions and high level of insulation , optical current transducer ( oct ) has been thought as the appropriate substitute of the electromagnetic current transformer . however , the outside factors , such as environment temperature , make so much influence on the precision and stability of oct that baffled its utility in power system
光学电流互感器( oct )自问世以来以其无饱和、高绝缘等优良性能被认为是传统电磁式电流互感器的替代产品，但长期以来oct的实用化道路充满荆棘，阻碍oct实用化的主要难题在于外界因素如温度等对oct测量精度和长期运行稳定性的影响难以克服。 |
