绝缘

The vibration equations with the coefficients related to and short-circuit currents, axial precompression, property of pressboard are formulated.

提出了绕组对称分布安匝平衡时的等效单自由度轴向振动模型，推导出了绕组轴向振动方程各参数与短路电流、轴向预紧力、绝缘垫块弹性等因素之间的定量表达式。

The viscoelastic models for calculating elastic forces in the insulation spacer are employed, because they are closer to the real physical structures and dynamic stiffness of oil-impregnated pressboard.

因为这一模型更能真实地反映油浸绝缘垫块纸板的物理结构和力学性质。

It is found that the current of oil flow electrification is maximum, minimal and intermediate in the case of pressboard paper, PTFE and metal iron respectively. Composition of new and aged oil is analyzed by DX-4 electron disperse analyzer.

通过固体材料表面特性对油流带电影响的研究，发现当固／液界面中的固体为绝缘纸板时，油流带电电流最大；当固体为聚四氟乙烯时，油流带电电流最小；当固体为金属铁板时，油流带电电流介于两者之间。

The presence of moisture in transformer pressboard has a detrimental effect on insulation life by lowering electrical breakdown strength and thermal endurance.

变压器绝缘纸板干燥过程微水分检测机理与试验研究》是中国输变电行业技术攻关课题(编号Y98010211)，是国际同行业难题之一。

Since the output signal from fringing field dielectrometry sensors under a low frequency driving voltage are very low, the shield-drive, signal buffer and band-pass filter are adopted to improve SNR. With the signal gain and phase angle from a transform circuit, the complex permittivity of pressboard are obtained.

鉴于边缘场电容式传感器在低频正弦驱动信号作用下输出的感应信号非常微弱，调理电路采用驱动屏蔽方式进行测量信号缓冲，用带阻滤波器提高信噪比，并利用相应的变换电路求出电容系统的相位角和幅值增益，从而得到绝缘纸板的复介电常数。

10 Insulation between the primary-lead connections and the adjacent winding , and between secondary-lead connections and the primary winding shall be one of the following :"

" 11.2.10 在初级引线连接和相邻绕组之间，次级引线连接和初级绕组之间的绝缘应是下面之一："

"B The primary winding insulated from the secondary winding by a layer of insulating material other than that specified in 11.2.2 ."

" b 初级绕组与次级绕组用一层不是11.2.2所指绝缘材料。"

The current transformer is fully enclosed structure. The terminal P1 of the primary winding is as the static contact of the switch cabinet and placed inside the epoxy-resin insulation cavity.

本型电流互感器为全封闭结构，其一次绕组的P1端子，直接作为开关柜中的静触头被设置在环氧浇注的绝缘空腔内。

An insulating film is formed on a first principal surface of the substrate.

本发明在非线性光学材料组成的基板的第1主表面上形成绝缘膜。

Moreover, the measurement and analyses of thermal image is made with the finished pyroelectric infrared array detector.

可明显看出因热绝缘结构的使用，使得元件在电性方面获得良好的提升。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。