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Busbar slot and thermal stability check

  • Categories:Zhongrui News
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  • Time of issue:2019-05-29 17:42
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(Summary description)温升极限验证是检测母线槽的进线端、杆接口、连接头的导体和外壳等在通过母线槽满负荷运行稳定下来,最高温度减去环境温度,是确定该点的温升值,有了该温升值准了解该母线槽所选择的绝缘材料,在今后满负荷运行过程中的安全稳定性以及满负荷运行过程中外壳温度对人体的伤害等有效证据来确保母线的运行安全。  如果母线槽做了温升极限验证,用户心中有数:在什么环境的温度下该母线槽在超负荷运行情况,也知道超载能力,有利于用

Busbar slot and thermal stability check

(Summary description)温升极限验证是检测母线槽的进线端、杆接口、连接头的导体和外壳等在通过母线槽满负荷运行稳定下来,最高温度减去环境温度,是确定该点的温升值,有了该温升值准了解该母线槽所选择的绝缘材料,在今后满负荷运行过程中的安全稳定性以及满负荷运行过程中外壳温度对人体的伤害等有效证据来确保母线的运行安全。  如果母线槽做了温升极限验证,用户心中有数:在什么环境的温度下该母线槽在超负荷运行情况,也知道超载能力,有利于用

  • Categories:Zhongrui News
  • Author:
  • Origin:
  • Time of issue:2019-05-29 17:42
  • Views:
Information
The temperature rise limit verification is to detect the incoming end of the busway, the rod interface, the conductor and the outer casing of the connector, etc., and stabilize the operation through the full load of the busbar slot. The maximum temperature minus the ambient temperature is to determine the temperature rise value of the point. The temperature rise value is accurate to understand the insulation material selected by the busway, and the effective stability in the future full-load operation process and the damage of the casing temperature to the human body during full-load operation to ensure the safe operation of the busbar.
 
If the busbar slot is verified by the temperature rise limit, the user has a number: in the temperature of the environment, the busbar slot is under overload operation, and the overload capacity is also known, which is beneficial to the user cost control and the safe management of the production operation.
 
When the busbar slot is short-circuited, there is a short-circuit current that is many times larger than the normal operating current flowing from the power supply through the high-current bus to the short-circuit point. This short-circuit current is often above 15KA, which has a force (mechanical) and thermal effect on the busbar. For this purpose, the ability of the busbar to withstand the effects of short-circuit currents must be verified, ie the dynamic stability and thermal stability of the busbars are verified. For the calculation of the short-circuit current, please refer to the relevant books. In general, it consists of the AC component of the power frequency and the DC attenuation component. The AC component contains the three components of the subtransient attenuation, transient attenuation and steady state, and is composed of lines, transformers and generators in the system. The integrated parameters and the generator's automatic excitation regulator determine that the DC attenuation component is the free component produced by the AC component, determined by the initial phase angle of the AC component (ie, the phase angle of the initial moment of the short circuit) and the integrated electromagnetic characteristics of the system.

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