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接地电阻柜的数控化操作要点

网址:www.jiedixiang58.com  2020-07-27  作者:admin    阅读:

接地电阻柜小型化电子设备的轻便、紧凑和小巧的发展要求,在很大程度上属于元件的小型化.接地电阻柜耐高温和低温、耐潮湿、耐低气压、耐辐射、耐盐雾和霉菌、耐振动和冲击等.性能参数接地电阻柜性能参数包括额定功耗、标称阻值及允许偏差、电阻温度系数、高频特性、非线性和电流噪声、极限电压等方面都非常的出色.接地电阻柜阻值稳定,电阻温度系数2.17×10-4Ω℃,确保了保护的灵敏度。
The development requirements of miniaturized electronic equipment of grounding resistance cabinet are light, compact and compact, To a large extent, it belongs to the miniaturization of components. The grounding resistance cabinet is resistant to high temperature and low temperature, humidity, low pressure, radiation, salt fog and mold, vibration and shock. The performance parameters of grounding resistance cabinet include rated power consumption, nominal resistance and allowable deviation, resistance temperature coefficient, high frequency characteristics, nonlinear and current noise, limiting voltage, etc Excellent. The resistance value of grounding resistance cabinet is stable, and the temperature coefficient of resistance is 2.17 × 10-4 Ω ℃, which ensures the sensitivity of protection.
接地电阻柜它是在0.22KV~0.66KV低压系统中接地用电阻成套装置.为了提高0.66/0.38/0.22(KV)低压用电系统供电质量,而减少因发生接地故障时引起的设备断电,发电厂的主厂房内低压用电系统应该采用高阻接地,这样不仅避免了单相接地时不必立即跳闸,而且当采用熔断器作为保护电器从而减少用电设备运行时烧毁的机率。
In order to improve the power supply quality of 0.66/0.38/0.22 (kV) low-voltage power system and reduce the equipment power failure caused by grounding fault, the low-voltage power supply system in the main power house of the power plant should adopt high resistance grounding, which not only avoids the need for immediate tripping when the single-phase grounding occurs, Moreover, when the fuse is used as a protective electrical appliance, the probability of burning down when the electrical equipment is running is reduced.

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